RESUMO
Blood loss is an inevitable complication and a major contributor to maternal morbidity and mortality at cesarean deliveries. We detected a potential preference regarding the efficacy and safety of rectal misoprostol over oxytocin as a uterotonic agent. We searched PubMed, Scopus, Web of Science, Cochrane, and other databases for the relevant trials from inception to September 2022. We included randomized clinical trials (RCTs) that compared rectal misoprostol versus intravenous oxytocin to control bleeding in women undergoing cesarean delivery. Our primary outcomes were the intra- and postoperative blood loss, and hemoglobin drop after delivery. Secondary outcomes included the need for blood transfusion, need for additional uterotonics, difference in operative time, as well as safety outcomes such as the incidence of shivering, pyrexia, nausea, and vomiting. Our search strategy revealed 1007 unique records, of them we retrieved full texts of 19 articles to check their adherence to our eligibility criteria. Seven RCTs with 1,090 participants were included. We found a significant reduction in postoperative blood loss [MD: -27.9; 95% confidence interval (CI): (-53.85, -2.10); p=0.03], and Hb drop after delivery [MD: -11; 95% CI: (-0.19, -0.03); p=0.01]. There is no significant difference regarding intraoperative blood loss, operative time, need for blood transfusion, or need for additional uterotonics. We could not find a significant difference between the two groups regarding safety outcomes, except for a higher shivering incidence in the misoprostol group [RR: 0.33; 95% CI; (0.16, 0.70); p=0.004]. We found a significant reduction in postoperative blood loss with a potentially favorable safety profile in women who administrated rectal misoprostol compared with oxytocin administration. Our findings recommend and prefer rectal misoprostol as a cheaper and effective uterotonic agent over oxytocin, which is expensive and requires an adequate cold chain for transportation and storage.
RESUMO
Coronavirus disease 2019 (COVID-19) has a wide-ranging spectrum of clinical symptoms, from asymptomatic/mild to severe. Recent research indicates that, among several factors, a low vitamin D level is a modifiable risk factor for COVID-19 patients. This study aims to evaluate the effect of vitamin D on hospital and laboratory outcomes of patients with COVID-19.Five databases (PubMed, Embase, Scopus, Web of Science, and Cochrane Library) and clinicaltrials.gov were searched until July 2022, using relevant keywords/Mesh terms. Only randomized clinical trials (RCTs) that addressed the topic were included. The Cochrane tool was used to assess the studies' risk of bias, and the data were analyzed using the review manager (RevMan 5.4).We included nine RCTs with 1586 confirmed COVID-19 patients. Vitamin D group showed a significant reduction of intensive care unit (ICU) admission (risk ratio = 0.59, 95% confidence interval (CI) [0.41, 0.84], P = 0.003), and higher change in vitamin D level (standardized mean difference = 2.27, 95% CI [2.08, 2.47], P < 0.00001) compared to the control group. Other studied hospital and laboratory outcomes showed non-significant difference between vitamin D and the control group (P ≥ 0.05).In conclusion, vitamin D reduced the risk of ICU admission and showed superiority in changing vitamin D level compared to the control group. However, other outcomes showed no difference between the two groups. More RCTs are needed to confirm these results.