Journal of Health Informatics in Developing Countries, 2019
Background: Carbon monoxide poisoning (COP) represents a significant burden and potential cause o... more Background: Carbon monoxide poisoning (COP) represents a significant burden and potential cause of death. However, there are only a few studies about COP in Saudi Arabia despite its noticeable impact on the community. Objective: This systematic review aimed to estimate the prevalence of COP at the level of Middle Eastern and North African region based on WHO distribution, with a particular interest to extrapolate the case fatality rate (CFR) and complications rates among COP victims. Methods: By reviewing the databases (Cochrane Library, Pubmed, EMBASE, and CINAHL) in a strategic approach, the relevant studies were retrieved and reviewed independently. Studies were included based on a predefined set of criteria. The quality of each study was evaluated by the Newcastle-Ottawa Scale (NOS). Outcome measures included the incidence (the primary outcome), gender, age, mortality and complications rate, seasonal variations, geographical area, source, and mechanism of exposure. Results: From...
Despite the fact that proton pump inhibitors (PPIs) are one of the most prescribed medications, s... more Despite the fact that proton pump inhibitors (PPIs) are one of the most prescribed medications, several epidemiological studies have reported many adverse effects related to their long-term usage. Nevertheless, there were inconsistent findings in the literature with regard to PPI use and bone mineral density (BMD) change. The aim of this systematic review and meta-analysis is to evaluate the association between the use of PPIs and change in BMD. The PubMed/MEDLINE, EMBASE, Cochrane and CINAHL databases were searched up to March 2019. Ten studies fulfilled the eligibility criteria (4761 cases and 30,809 controls), from which the mean difference and mean annualized percent change in BMD were pooled using RevMan 5.3.5 The results showed no statistically significant association between PPI users and non-users in mean annualized percent change in BMD (0.06; 95% CI − 0.07, 0.18) with moderate heterogeneity (I 2 : 63%). There was a statistically significant reduction in the mean BMD difference among PPI users (− 0.03; 95% CI − 0.04, − 0.01) with no substantial heterogeneity (I 2 : 26%). This meta-analysis reported inconsistent results regarding the use of PPIs and BMD loss. Thus, the effect of PPIs on BMD needs to be elucidated by other studies, and healthcare providers should prescribe PPIs with caution considering their unfavorable consequences on bone health.
Computer Methods and Programs in Biomedicine, 2019
Background: Patient empowerment is a key factor in managing chronic conditions effectively. For p... more Background: Patient empowerment is a key factor in managing chronic conditions effectively. For people with Type 2 diabetes, managing the condition can be challenging, especially when diagnosis occurs in late adulthood. Online support groups can offer information and emotional support needed by people with Type 2 diabetes to gain a sense of empowerment. Objective: To understand the influence of using online support groups in empowering people with Type 2 diabetes. Methods: 312 messages from two UK-diabetes platforms have been collected and thematically analyzed to understand how the usage of the platforms have affected the management of the illness for platform members. Results: The sample was collected from 104 members (41% female, 33% male and 26% with no gender information). The initial results showed that members used the platforms to understand the nature of the condition as well as to understand other issues related to the management of the illness, such as diet, activity and medication. Conclusions: Initial findings suggest that online support groups are a useful source of information for people with Type 2 diabetes. The platforms were found to be helpful for members to exchange experiences and share information. The next stage of the study will include analyzing more posts from the platforms and undertaking semistructured interviews with current and former members of the platforms.
To determine perceptions of parents about child abuse, and their impact on physical and emotional... more To determine perceptions of parents about child abuse, and their impact on physical and emotional child abuse. Two hundred parents attending three primary health care centers (PHCCs) in Riyadh serving National Guard employes and their families, were requested to participate in this survey. Data was collected by self administered questionnaire. Five main risk factors areas/domains were explored; three were parent related (personal factors, history of parents' childhood abuse, and parental attitude toward punishment), and two were family/community effects and factors specific to the child. SPSS was used for data entry and analysis. Descriptive analysis included computation of mean, median, mode, frequencies, and percentages; Chi-square test and t-test were used to test for statistical significance, and regression analysis performed to explore relationships between child abuse and various risk factors. Thirty-four percent of the parents reported a childhood history of physical abus...
Background: The acquisition of intravenous (IV) access in the actively convulsing patient is diff... more Background: The acquisition of intravenous (IV) access in the actively convulsing patient is difficult. This often delays the administration of the IV benzodiazepine (BDZ) necessary for seizure cessation. Delays in seizure cessation are associated with increased pharmacoresistance, increased risk of neuronal injury, worse patient outcomes, and increased morbidity. Objective: The objective was to assess whether the delay imposed by IV access acquisition is justified by improved outcomes. We compared IV versus non-IV BDZ efficacy in the real world with regard to failure rates (primary outcome), interval to seizure control, and observed complications (secondary outcomes). Methods: A systematic review was performed using Medline, Embase, and the Cochrane Library. All studies published or in press from the inception of the respective database to July 2016 were included. Only randomized and quasi-randomized controlled trials directly comparing IV to non-IV (buccal, rectal, intranasal, or intramuscular) BDZ were included. Results: Our search strategy retrieved 2,604 citations for review. A total of 11 studies were finally included in qualitative synthesis and 10 in quantitative analysis. Only one was of high quality. For treatment failure, non-IV BDZ was superior to IV BDZ (odd ratio [OR] = 0.72; 95% confidence interval [CI] = 0.56-0.92). However, no significant difference was found between the two treatments in the pediatric subgroup (OR = 1.16; 95% CI = 0.74-1.81). Non-IV BDZ was administered faster than IV BDZ and therefore controlled seizures faster (mean difference = 3.41 minutes; 95% CI = 1.69-5.13 minutes) despite a longer interval between drug administration and seizure cessation (mean difference = 0.74 minutes; 95% CI = 0.52-0.95 minutes). Respiratory complications requiring intervention were similar between non-IV BDZ and IV BDZ, regardless of administration route (risk difference = 0.00; 95% CI =-0.02 to 0.01).
There is conflicting evidence about the relationship between the dose of enteral caloric intake a... more There is conflicting evidence about the relationship between the dose of enteral caloric intake and survival in critically ill patients. The objective of this systematic review and meta-analysis is to compare the effect of lower versus higher dose of enteral caloric intake in adult critically ill patients on outcome. We reviewed MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Scopus from inception through November 2015. We included randomized and quasi-randomized studies in which there was a significant difference in the caloric intake in adult critically ill patients, including trials in which caloric restriction was the primary intervention (caloric restriction trials) and those with other interventions (non-caloric restriction trials). Two reviewers independently extracted data on study characteristics, caloric intake, and outcomes with hospital mortality being the primary outcome. Twenty-one trials mostly with moderat...
BACKGROUND: Targeting epidermal growth factor receptors (EGFR) is an innovative approach to manag... more BACKGROUND: Targeting epidermal growth factor receptors (EGFR) is an innovative approach to managing non-small cell lung cancer (NSCLC) which harbors EGFR mutation. However, the efficacy of these agents like erlotinib in patients without the mutation is not known. METHODS: This systematic review included Phase III randomized clinical trials that compared single agent erlotinib to other management options in the setting of NSCLC with reported outcome data on patients with EGFR wild type (EGFRWT) tumors. Outcome data include overall survival (OS), progression free survival (PFS) and response rate (RR). Random effects meta-analysis was used to pool outcomes across studies. RESULTS: Three studies met the inclusion criteria. These studies included a total of 2044 patients with outcome data on 674 patients with EGFRWT tumors (33%). Meta-analysis revealed a statistically significant improvement in OS with erlotinib (hazard ratio of 0.780; 95% confidence interval: 0.654-0.930, P = 0.006). Data were not available to perform PFS or RR analysis. The quality of this evidence is considered to be moderate to high. CONCLUSION: Our study revealed a significant benefit of erlotinib in patient with EGFRWT tumors compared with other approaches. These findings add another therapeutic option to patients generally considered difficult to treat.
Background and Objectives: Hemodialysis catheters are commonly used when renal replacement therap... more Background and Objectives: Hemodialysis catheters are commonly used when renal replacement therapy is initiated. These catheters have significant complications. Among "locking" solutions used in an attempt to decrease these complications is recombinant tissue plasminogen activator (rt-PA). This systematic review is to determine the efficacy of rt-PA versus heparin, the standard of care. Materials and Methods: A systematic review of randomized controlled trials studying rt-PA alone or rt-PA plus heparin versus heparin alone as locking agents for hemodialysis catheters, which included patients needed a temporary hemodialysis catheter for hemodialysis. We identified relevant trials through electronic databases and correspondence with experts. Two investigators independently reviewed potentially eligible trials and extracted data. Results: Three trials met the inclusion criteria. One trial reported an improved catheter malfunctioning in patients using rt-PA plus heparin to loc...
Inflammatory bowel disease and its various treatments may affect the kidney in several ways. Rece... more Inflammatory bowel disease and its various treatments may affect the kidney in several ways. Recently, case reports have been published documenting the development of nephrotic syndrome after the treatment for inflammatory bowel disease with 5-aminosalicylic acid derivatives. We report a 50-year-old patient who was diagnosed with Crohn′s disease and was treated with mesalamine. The patient subsequently developed nephrotic syndrome and a renal biopsy showed minimal change disease. He was treated with losartan and rosuvastatin and showed improvement in his renal function and serum cholesterol level. This is the first reported case in Crohn′s disease although there have been six previous case reports of nephrotic syndrome following salicylic acid derivatives for ulcerative colitis.
World journal of gastroenterology : WJG, Jan 28, 2015
To quantitatively summarize and appraise the available evidence of urea breath test (UBT) use to ... more To quantitatively summarize and appraise the available evidence of urea breath test (UBT) use to diagnose Helicobacter pylori (H. pylori) infection in patients with dyspepsia and provide pooled diagnostic accuracy measures. We searched MEDLINE, EMBASE, Cochrane library and other databases for studies addressing the value of UBT in the diagnosis of H. pylori infection. We included cross-sectional studies that evaluated the diagnostic accuracy of UBT in adult patients with dyspeptic symptoms. Risk of bias was assessed using QUADAS (Quality Assessment of Diagnostic Accuracy Studies)-2 tool. Diagnostic accuracy measures were pooled using the random-effects model. Subgroup analysis was conducted by UBT type ((13)C vs (14)C) and by measurement technique (Infrared spectrometry vs Isotope Ratio Mass Spectrometry). Out of 1380 studies identified, only 23 met the eligibility criteria. Fourteen studies (61%) evaluated (13)C UBT and 9 studies (39%) evaluated (14)C UBT. There was significant var...
BACKGROUND: Hot flashes are the most commonly reported vasomotor symptom during the peri-and earl... more BACKGROUND: Hot flashes are the most commonly reported vasomotor symptom during the peri-and early post-menopausal period. OBJECTIVES: To systematically review, appraise and summarize the evidence of the impact of different SSRIs on peri-menopausal hot flashes in healthy women in randomized, controlled trials. METHODS: A comprehensive literature search was conducted of MEDLINE™, EMBASE, the Cochrane Central Register of Controlled Trials, Web of Science and Scopus through March 2013. Two independent reviewers selected studies and extracted data. Random effects meta-analysis was used to pool outcomes across studies, and Bayesian mixed treatment methods were used to rank SSRIs in terms of effectiveness. RESULTS: We included a total of 11 randomized controlled trials with good methodological quality enrolling 2,069 menopausal and post-menopausal women (follow-up 1-9 months, mean age 36-76 years, mean time since menopause 2.3-6.6 years). Compared with placebo, SSRIs were associated with a statistically significant decrease in hot flash frequency (difference in means −0.93; 95 % CI −1.46 to −0.37; I 2 = 21 %) and severity assessed by various scales (standardized difference in means −0.34; 95 % CI −0.59 to −0.10; I 2 = 47 %). Adverse events did not differ from placebo. Mixed treatment comparison analysis demonstrated the superiority of escitalopram compared to other SSRIs in terms of efficacy. CONCLUSION: SSRI use is associated with modest improvement in the severity and frequency of hot flashes but can also be associated with the typical profile of SSRI adverse effects.
People with type 2 diabetes are at increased risk of bladder cancer. Pioglitazone is said to incr... more People with type 2 diabetes are at increased risk of bladder cancer. Pioglitazone is said to increase it further, although published evidence is mixed. We conducted a meta-analysis to determine if any link between the use of pioglitazone and an increased risk of bladder cancer can be found. A comprehensive literature search was conducted through electronic databases as well as registries for data of clinical trials to identify studies that investigate the effect of pioglitazone on bladder cancer in diabetic patients. We used the risk ratio (RR) and the hazard ratio (HR) provided by the studies to illustrate the risk of occurrence of bladder cancer in the experimental group compared to that in the control group. Fourteen studies using RR and 12 studies using HR were included in the analysis. The overall RR was 1.13 with 95% CI (0.96-1.33) with low heterogeneity among the studies using RR, suggesting that no connection exists between use of pioglitazone and the risk of bladder malignancy. The summary HR was 1.07 (0.96-1.18) allowing us to affirm that there is no link between long-term use of pioglitazone and bladder cancer. Our results support the hypothesis of no difference in the incidence of bladder cancer among the pioglitazone group and the nonuser group. Our conclusion is that the explanation of hypothetically increased risk of bladder malignancy should be attributed to other factors.
Background: Teaching evidence-based medicine (EBM) should be evaluated and guided by evidence of ... more Background: Teaching evidence-based medicine (EBM) should be evaluated and guided by evidence of its own effectiveness. However, no data are available on adoption of EBM by Syrian undergraduate, postgraduate, or practicing physicians. In fact, the teaching of EBM in Syria is not yet a part of undergraduate medical curricula. The authors evaluated education of evidence-based medicine through a two-day intensive training course. Methods: The authors evaluated education of evidence-based medicine through a two-day intensive training course that took place in 2011. The course included didactic lectures as well as interactive hands-on workshops on all topics of EBM. A comprehensive questionnaire, that included the Berlin questionnaire, was used to inspect medical students' awareness of, attitudes toward, and competencies' in EBM. Results: According to students, problems facing proper EBM practice in Syria were the absence of the following: an EBM teaching module in medical school curriculum (94%), role models among professors and instructors (92%), a librarian (70%), institutional subscription to medical journals (94%), and sufficient IT hardware (58%). After the course, there was a statistically significant increase in medical students' perceived ability to go through steps of EBM, namely: formulating PICO questions (56.9%), searching for evidence (39.8%), appraising the evidence (27.3%), understanding statistics (48%), and applying evidence at point of care (34.1%). However, mean increase in Berlin scores after the course was 2.68, a non-statistically significant increase of 17.86%. Conclusion: The road to a better EBM reality in Syria starts with teaching EBM in medical school and developing the proper environment to facilitate transforming current medical education and practice to an evidence-based standard in Syria.
We performed an analysis to assess the need for conducting additional randomized controlled trial... more We performed an analysis to assess the need for conducting additional randomized controlled trials (RCTs) comparing open and endovascular aneurysm repair (EVAR) for abdominal aortic aneurysm (AAA). Trial sequential analysis (TSA) is a statistical methodology that can calculate the required information size of a meta-analysis and assess the risk of random errors similar to interim analysis in a single optimally powered trial. It helps to decide whether we have obtained sufficient evidence or whether further RCTs are required. For short-term mortality reintervention rates, TSA showed firm evidence that there would be no extra benefit in conducting more RCTs to detect the effectiveness of EVAR versus open repair. For long-term mortality, TSA revealed either inconclusive evidence to support or refute endovascular or open repair; so, further RCTs should be performed to investigate long-term, all-cause mortality after AAA repair.
Polycystic ovary syndrome (PCOS) is a complex condition and has been described in women who have ... more Polycystic ovary syndrome (PCOS) is a complex condition and has been described in women who have polycystic ovaries as the underlying cause of hirsutism and chronic anovulation. Studies on PCOS in the Saudi population are very few. The aim of this study was to investigate the reproductive hormones levels in patients with PCOS. Effect of age and body mass index (BMI) on the hormonal findings was eliminated through a multivariate analysis. A comparative study was conducted on Saudi subjects attending the outpatient clinic of National Guard Hospital in Riyadh. A total of 62 cases with PCOS and 40 healthy Saudi women were included in this study. Physical evaluation and laboratory investigations were carried out. Blood luteinizing hormone (LH), follicle stimulating hormone (FSH), estradiol (E2), dehydroepiandrosterone sulfate (DHEA-SO4), sex hormone-binding globulin (SHBG), total testosterone, prolactin, and progesterone were determined. To adjust for the potentially confounding effect of age and BMI, we carried out multivariate linear regression analyses for the association between each of the reproductive hormones and PCOS. Serum levels of FSH, SHBG, and progesterone were significantly lower in PCOS compared to controls (respective P values 0.001, 0.001, and 0.002), while LH/FSH and testosterone levels were higher in PCOS cases than in controls (P = 0.008 and 0.003, respectively). When multivariate linear regression analyses were carried out, LH/FSH and total testosterone were positively correlated with the disease [95% confidence interval (CI) = 0.02-0.35 and 0.02-0.17, respectively], whereas FSH, SHBG, and progesterone were negatively correlated with the disease (95% CI = -0.06 to 0.001, -0.01 to 0.001, and -0.17 to -0.03, respectively), independent of age and BMI. Our study suggests that regardless of the age and weight factors, Saudi patients with PCOS have higher levels of LH/FSH and total testosterone; but have lower levels of FSH, SHBG, and progesterone compared to controls.
Journal of Health Informatics in Developing Countries, 2019
Background: Carbon monoxide poisoning (COP) represents a significant burden and potential cause o... more Background: Carbon monoxide poisoning (COP) represents a significant burden and potential cause of death. However, there are only a few studies about COP in Saudi Arabia despite its noticeable impact on the community. Objective: This systematic review aimed to estimate the prevalence of COP at the level of Middle Eastern and North African region based on WHO distribution, with a particular interest to extrapolate the case fatality rate (CFR) and complications rates among COP victims. Methods: By reviewing the databases (Cochrane Library, Pubmed, EMBASE, and CINAHL) in a strategic approach, the relevant studies were retrieved and reviewed independently. Studies were included based on a predefined set of criteria. The quality of each study was evaluated by the Newcastle-Ottawa Scale (NOS). Outcome measures included the incidence (the primary outcome), gender, age, mortality and complications rate, seasonal variations, geographical area, source, and mechanism of exposure. Results: From...
Despite the fact that proton pump inhibitors (PPIs) are one of the most prescribed medications, s... more Despite the fact that proton pump inhibitors (PPIs) are one of the most prescribed medications, several epidemiological studies have reported many adverse effects related to their long-term usage. Nevertheless, there were inconsistent findings in the literature with regard to PPI use and bone mineral density (BMD) change. The aim of this systematic review and meta-analysis is to evaluate the association between the use of PPIs and change in BMD. The PubMed/MEDLINE, EMBASE, Cochrane and CINAHL databases were searched up to March 2019. Ten studies fulfilled the eligibility criteria (4761 cases and 30,809 controls), from which the mean difference and mean annualized percent change in BMD were pooled using RevMan 5.3.5 The results showed no statistically significant association between PPI users and non-users in mean annualized percent change in BMD (0.06; 95% CI − 0.07, 0.18) with moderate heterogeneity (I 2 : 63%). There was a statistically significant reduction in the mean BMD difference among PPI users (− 0.03; 95% CI − 0.04, − 0.01) with no substantial heterogeneity (I 2 : 26%). This meta-analysis reported inconsistent results regarding the use of PPIs and BMD loss. Thus, the effect of PPIs on BMD needs to be elucidated by other studies, and healthcare providers should prescribe PPIs with caution considering their unfavorable consequences on bone health.
Computer Methods and Programs in Biomedicine, 2019
Background: Patient empowerment is a key factor in managing chronic conditions effectively. For p... more Background: Patient empowerment is a key factor in managing chronic conditions effectively. For people with Type 2 diabetes, managing the condition can be challenging, especially when diagnosis occurs in late adulthood. Online support groups can offer information and emotional support needed by people with Type 2 diabetes to gain a sense of empowerment. Objective: To understand the influence of using online support groups in empowering people with Type 2 diabetes. Methods: 312 messages from two UK-diabetes platforms have been collected and thematically analyzed to understand how the usage of the platforms have affected the management of the illness for platform members. Results: The sample was collected from 104 members (41% female, 33% male and 26% with no gender information). The initial results showed that members used the platforms to understand the nature of the condition as well as to understand other issues related to the management of the illness, such as diet, activity and medication. Conclusions: Initial findings suggest that online support groups are a useful source of information for people with Type 2 diabetes. The platforms were found to be helpful for members to exchange experiences and share information. The next stage of the study will include analyzing more posts from the platforms and undertaking semistructured interviews with current and former members of the platforms.
To determine perceptions of parents about child abuse, and their impact on physical and emotional... more To determine perceptions of parents about child abuse, and their impact on physical and emotional child abuse. Two hundred parents attending three primary health care centers (PHCCs) in Riyadh serving National Guard employes and their families, were requested to participate in this survey. Data was collected by self administered questionnaire. Five main risk factors areas/domains were explored; three were parent related (personal factors, history of parents' childhood abuse, and parental attitude toward punishment), and two were family/community effects and factors specific to the child. SPSS was used for data entry and analysis. Descriptive analysis included computation of mean, median, mode, frequencies, and percentages; Chi-square test and t-test were used to test for statistical significance, and regression analysis performed to explore relationships between child abuse and various risk factors. Thirty-four percent of the parents reported a childhood history of physical abus...
Background: The acquisition of intravenous (IV) access in the actively convulsing patient is diff... more Background: The acquisition of intravenous (IV) access in the actively convulsing patient is difficult. This often delays the administration of the IV benzodiazepine (BDZ) necessary for seizure cessation. Delays in seizure cessation are associated with increased pharmacoresistance, increased risk of neuronal injury, worse patient outcomes, and increased morbidity. Objective: The objective was to assess whether the delay imposed by IV access acquisition is justified by improved outcomes. We compared IV versus non-IV BDZ efficacy in the real world with regard to failure rates (primary outcome), interval to seizure control, and observed complications (secondary outcomes). Methods: A systematic review was performed using Medline, Embase, and the Cochrane Library. All studies published or in press from the inception of the respective database to July 2016 were included. Only randomized and quasi-randomized controlled trials directly comparing IV to non-IV (buccal, rectal, intranasal, or intramuscular) BDZ were included. Results: Our search strategy retrieved 2,604 citations for review. A total of 11 studies were finally included in qualitative synthesis and 10 in quantitative analysis. Only one was of high quality. For treatment failure, non-IV BDZ was superior to IV BDZ (odd ratio [OR] = 0.72; 95% confidence interval [CI] = 0.56-0.92). However, no significant difference was found between the two treatments in the pediatric subgroup (OR = 1.16; 95% CI = 0.74-1.81). Non-IV BDZ was administered faster than IV BDZ and therefore controlled seizures faster (mean difference = 3.41 minutes; 95% CI = 1.69-5.13 minutes) despite a longer interval between drug administration and seizure cessation (mean difference = 0.74 minutes; 95% CI = 0.52-0.95 minutes). Respiratory complications requiring intervention were similar between non-IV BDZ and IV BDZ, regardless of administration route (risk difference = 0.00; 95% CI =-0.02 to 0.01).
There is conflicting evidence about the relationship between the dose of enteral caloric intake a... more There is conflicting evidence about the relationship between the dose of enteral caloric intake and survival in critically ill patients. The objective of this systematic review and meta-analysis is to compare the effect of lower versus higher dose of enteral caloric intake in adult critically ill patients on outcome. We reviewed MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Scopus from inception through November 2015. We included randomized and quasi-randomized studies in which there was a significant difference in the caloric intake in adult critically ill patients, including trials in which caloric restriction was the primary intervention (caloric restriction trials) and those with other interventions (non-caloric restriction trials). Two reviewers independently extracted data on study characteristics, caloric intake, and outcomes with hospital mortality being the primary outcome. Twenty-one trials mostly with moderat...
BACKGROUND: Targeting epidermal growth factor receptors (EGFR) is an innovative approach to manag... more BACKGROUND: Targeting epidermal growth factor receptors (EGFR) is an innovative approach to managing non-small cell lung cancer (NSCLC) which harbors EGFR mutation. However, the efficacy of these agents like erlotinib in patients without the mutation is not known. METHODS: This systematic review included Phase III randomized clinical trials that compared single agent erlotinib to other management options in the setting of NSCLC with reported outcome data on patients with EGFR wild type (EGFRWT) tumors. Outcome data include overall survival (OS), progression free survival (PFS) and response rate (RR). Random effects meta-analysis was used to pool outcomes across studies. RESULTS: Three studies met the inclusion criteria. These studies included a total of 2044 patients with outcome data on 674 patients with EGFRWT tumors (33%). Meta-analysis revealed a statistically significant improvement in OS with erlotinib (hazard ratio of 0.780; 95% confidence interval: 0.654-0.930, P = 0.006). Data were not available to perform PFS or RR analysis. The quality of this evidence is considered to be moderate to high. CONCLUSION: Our study revealed a significant benefit of erlotinib in patient with EGFRWT tumors compared with other approaches. These findings add another therapeutic option to patients generally considered difficult to treat.
Background and Objectives: Hemodialysis catheters are commonly used when renal replacement therap... more Background and Objectives: Hemodialysis catheters are commonly used when renal replacement therapy is initiated. These catheters have significant complications. Among "locking" solutions used in an attempt to decrease these complications is recombinant tissue plasminogen activator (rt-PA). This systematic review is to determine the efficacy of rt-PA versus heparin, the standard of care. Materials and Methods: A systematic review of randomized controlled trials studying rt-PA alone or rt-PA plus heparin versus heparin alone as locking agents for hemodialysis catheters, which included patients needed a temporary hemodialysis catheter for hemodialysis. We identified relevant trials through electronic databases and correspondence with experts. Two investigators independently reviewed potentially eligible trials and extracted data. Results: Three trials met the inclusion criteria. One trial reported an improved catheter malfunctioning in patients using rt-PA plus heparin to loc...
Inflammatory bowel disease and its various treatments may affect the kidney in several ways. Rece... more Inflammatory bowel disease and its various treatments may affect the kidney in several ways. Recently, case reports have been published documenting the development of nephrotic syndrome after the treatment for inflammatory bowel disease with 5-aminosalicylic acid derivatives. We report a 50-year-old patient who was diagnosed with Crohn′s disease and was treated with mesalamine. The patient subsequently developed nephrotic syndrome and a renal biopsy showed minimal change disease. He was treated with losartan and rosuvastatin and showed improvement in his renal function and serum cholesterol level. This is the first reported case in Crohn′s disease although there have been six previous case reports of nephrotic syndrome following salicylic acid derivatives for ulcerative colitis.
World journal of gastroenterology : WJG, Jan 28, 2015
To quantitatively summarize and appraise the available evidence of urea breath test (UBT) use to ... more To quantitatively summarize and appraise the available evidence of urea breath test (UBT) use to diagnose Helicobacter pylori (H. pylori) infection in patients with dyspepsia and provide pooled diagnostic accuracy measures. We searched MEDLINE, EMBASE, Cochrane library and other databases for studies addressing the value of UBT in the diagnosis of H. pylori infection. We included cross-sectional studies that evaluated the diagnostic accuracy of UBT in adult patients with dyspeptic symptoms. Risk of bias was assessed using QUADAS (Quality Assessment of Diagnostic Accuracy Studies)-2 tool. Diagnostic accuracy measures were pooled using the random-effects model. Subgroup analysis was conducted by UBT type ((13)C vs (14)C) and by measurement technique (Infrared spectrometry vs Isotope Ratio Mass Spectrometry). Out of 1380 studies identified, only 23 met the eligibility criteria. Fourteen studies (61%) evaluated (13)C UBT and 9 studies (39%) evaluated (14)C UBT. There was significant var...
BACKGROUND: Hot flashes are the most commonly reported vasomotor symptom during the peri-and earl... more BACKGROUND: Hot flashes are the most commonly reported vasomotor symptom during the peri-and early post-menopausal period. OBJECTIVES: To systematically review, appraise and summarize the evidence of the impact of different SSRIs on peri-menopausal hot flashes in healthy women in randomized, controlled trials. METHODS: A comprehensive literature search was conducted of MEDLINE™, EMBASE, the Cochrane Central Register of Controlled Trials, Web of Science and Scopus through March 2013. Two independent reviewers selected studies and extracted data. Random effects meta-analysis was used to pool outcomes across studies, and Bayesian mixed treatment methods were used to rank SSRIs in terms of effectiveness. RESULTS: We included a total of 11 randomized controlled trials with good methodological quality enrolling 2,069 menopausal and post-menopausal women (follow-up 1-9 months, mean age 36-76 years, mean time since menopause 2.3-6.6 years). Compared with placebo, SSRIs were associated with a statistically significant decrease in hot flash frequency (difference in means −0.93; 95 % CI −1.46 to −0.37; I 2 = 21 %) and severity assessed by various scales (standardized difference in means −0.34; 95 % CI −0.59 to −0.10; I 2 = 47 %). Adverse events did not differ from placebo. Mixed treatment comparison analysis demonstrated the superiority of escitalopram compared to other SSRIs in terms of efficacy. CONCLUSION: SSRI use is associated with modest improvement in the severity and frequency of hot flashes but can also be associated with the typical profile of SSRI adverse effects.
People with type 2 diabetes are at increased risk of bladder cancer. Pioglitazone is said to incr... more People with type 2 diabetes are at increased risk of bladder cancer. Pioglitazone is said to increase it further, although published evidence is mixed. We conducted a meta-analysis to determine if any link between the use of pioglitazone and an increased risk of bladder cancer can be found. A comprehensive literature search was conducted through electronic databases as well as registries for data of clinical trials to identify studies that investigate the effect of pioglitazone on bladder cancer in diabetic patients. We used the risk ratio (RR) and the hazard ratio (HR) provided by the studies to illustrate the risk of occurrence of bladder cancer in the experimental group compared to that in the control group. Fourteen studies using RR and 12 studies using HR were included in the analysis. The overall RR was 1.13 with 95% CI (0.96-1.33) with low heterogeneity among the studies using RR, suggesting that no connection exists between use of pioglitazone and the risk of bladder malignancy. The summary HR was 1.07 (0.96-1.18) allowing us to affirm that there is no link between long-term use of pioglitazone and bladder cancer. Our results support the hypothesis of no difference in the incidence of bladder cancer among the pioglitazone group and the nonuser group. Our conclusion is that the explanation of hypothetically increased risk of bladder malignancy should be attributed to other factors.
Background: Teaching evidence-based medicine (EBM) should be evaluated and guided by evidence of ... more Background: Teaching evidence-based medicine (EBM) should be evaluated and guided by evidence of its own effectiveness. However, no data are available on adoption of EBM by Syrian undergraduate, postgraduate, or practicing physicians. In fact, the teaching of EBM in Syria is not yet a part of undergraduate medical curricula. The authors evaluated education of evidence-based medicine through a two-day intensive training course. Methods: The authors evaluated education of evidence-based medicine through a two-day intensive training course that took place in 2011. The course included didactic lectures as well as interactive hands-on workshops on all topics of EBM. A comprehensive questionnaire, that included the Berlin questionnaire, was used to inspect medical students' awareness of, attitudes toward, and competencies' in EBM. Results: According to students, problems facing proper EBM practice in Syria were the absence of the following: an EBM teaching module in medical school curriculum (94%), role models among professors and instructors (92%), a librarian (70%), institutional subscription to medical journals (94%), and sufficient IT hardware (58%). After the course, there was a statistically significant increase in medical students' perceived ability to go through steps of EBM, namely: formulating PICO questions (56.9%), searching for evidence (39.8%), appraising the evidence (27.3%), understanding statistics (48%), and applying evidence at point of care (34.1%). However, mean increase in Berlin scores after the course was 2.68, a non-statistically significant increase of 17.86%. Conclusion: The road to a better EBM reality in Syria starts with teaching EBM in medical school and developing the proper environment to facilitate transforming current medical education and practice to an evidence-based standard in Syria.
We performed an analysis to assess the need for conducting additional randomized controlled trial... more We performed an analysis to assess the need for conducting additional randomized controlled trials (RCTs) comparing open and endovascular aneurysm repair (EVAR) for abdominal aortic aneurysm (AAA). Trial sequential analysis (TSA) is a statistical methodology that can calculate the required information size of a meta-analysis and assess the risk of random errors similar to interim analysis in a single optimally powered trial. It helps to decide whether we have obtained sufficient evidence or whether further RCTs are required. For short-term mortality reintervention rates, TSA showed firm evidence that there would be no extra benefit in conducting more RCTs to detect the effectiveness of EVAR versus open repair. For long-term mortality, TSA revealed either inconclusive evidence to support or refute endovascular or open repair; so, further RCTs should be performed to investigate long-term, all-cause mortality after AAA repair.
Polycystic ovary syndrome (PCOS) is a complex condition and has been described in women who have ... more Polycystic ovary syndrome (PCOS) is a complex condition and has been described in women who have polycystic ovaries as the underlying cause of hirsutism and chronic anovulation. Studies on PCOS in the Saudi population are very few. The aim of this study was to investigate the reproductive hormones levels in patients with PCOS. Effect of age and body mass index (BMI) on the hormonal findings was eliminated through a multivariate analysis. A comparative study was conducted on Saudi subjects attending the outpatient clinic of National Guard Hospital in Riyadh. A total of 62 cases with PCOS and 40 healthy Saudi women were included in this study. Physical evaluation and laboratory investigations were carried out. Blood luteinizing hormone (LH), follicle stimulating hormone (FSH), estradiol (E2), dehydroepiandrosterone sulfate (DHEA-SO4), sex hormone-binding globulin (SHBG), total testosterone, prolactin, and progesterone were determined. To adjust for the potentially confounding effect of age and BMI, we carried out multivariate linear regression analyses for the association between each of the reproductive hormones and PCOS. Serum levels of FSH, SHBG, and progesterone were significantly lower in PCOS compared to controls (respective P values 0.001, 0.001, and 0.002), while LH/FSH and testosterone levels were higher in PCOS cases than in controls (P = 0.008 and 0.003, respectively). When multivariate linear regression analyses were carried out, LH/FSH and total testosterone were positively correlated with the disease [95% confidence interval (CI) = 0.02-0.35 and 0.02-0.17, respectively], whereas FSH, SHBG, and progesterone were negatively correlated with the disease (95% CI = -0.06 to 0.001, -0.01 to 0.001, and -0.17 to -0.03, respectively), independent of age and BMI. Our study suggests that regardless of the age and weight factors, Saudi patients with PCOS have higher levels of LH/FSH and total testosterone; but have lower levels of FSH, SHBG, and progesterone compared to controls.
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Papers by Mazen Ferwana