The Impact of COVID-19 on Preterm Birth Among Pregnant Women in Al-Qassim, Saudi Arabia.

BACKGROUND: Pregnant women are regarded as a unique group due to the distinct immunological condition that pregnancy produces, which makes pregnant women more susceptible to respiratory infections like coronavirus disease 2019 (COVID-19) and its consequences. During pregnancy, many viral infections have been recognized to increase the risk of adverse obstetrical outcomes such as preterm delivery. The purpose of this study was to investigate the effects of COVID-19 infection on preterm birth in pregnant women in the Al-Qassim region of Saudi Arabia. METHODS:  This retrospective cohort study was conducted in Saudi Arabia between December 2019 to October 2021. The target subjects were pregnant women with live singleton gestations who underwent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) polymerase chain reaction (PCR) testing for COVID-19 infection during their delivery hospitalization. Data gathered included patient demographic information, clinical characteristics, and pregnancy outcomes. Data were analyzed using R version 4.1.1 (R Core Team (2021); R Foundation for Statistical Computing, Vienna, Austria). RESULTS:  A total of 381 pregnant women were included. The median maternal age of women was 31.0 years (IQR: 27.0, 35.0) and the median BMI value was 30.5 kg/m2 (IQR: 26.9, 34.8). The most common comorbidities were diabetes (7.1%) and asthma (4.5%). A known history of preterm birth was prevalent among 2.9%. Of the participants, 13.6% had a prenatal COVID-19 infection, of whom 57.7% had their infections resolved. The prevalence of positive PCR testing was 13.6%. Preterm birth occurred in 46 women (12.1%, 95%CI 9.1-15.9). Preterm birth was significantly associated with having a maternal age of ≥35 years, having high frequencies of parity, and having a past history of preterm birth, as well as having a history of hypertension and diabetes. Preterm birth was not significantly associated with having a confirmed COVID-19 infection at delivery. CONCLUSION: It was shown that preterm birth is evident among women with COVID-19 infection. Preterm birth is significantly associated with old age, multiparity, and a history of preterm delivery. Preterm birth is not significantly associated with having a confirmed COVID-19 infection at delivery. More research regarding infection-related adverse effects is advised and should be highlighted.

Isosorbide mononitrate for cervical ripening during labour induction: A systematic review and meta-analysis of 23 randomized controlled trials.

OBJECTIVE: To conduct a systematic review and meta-analysis of all randomized controlled trials (RCTs) that evaluated the efficacy and safety of isosorbide mononitrate (IMN) in promoting cervical ripening during labour induction. METHODS: Six major databases were searched from inception until 22 April 2021. The risk of bias of included studies was assessed. Various endpoints (n = 21) were meta-analysed, and the endpoints were pooled as mean differences (MD) or risk ratios (RR) with 95% confidence intervals (CI). RESULTS: In total, 23 RCTs were included in this review, comprising 26 intervention arms and a total of 4305 patients (2210 and 2095 patients were allocated to the IMN and control groups, respectively). Pertaining to obstetric-related maternal outcomes, the pooled analysis showed that admission to delivery time and rate of caesarean delivery were significantly reduced in the IMN group. Moreover, the mean Bishop score and the mean change in Bishop score were significantly increased in the IMN group. Pertaining to drug-related maternal side effect outcomes, the pooled analysis showed that the rates of headache, palpitations, nausea and flushing were significantly lower in the IMN group. Pertaining to neonatal outcomes, the pooled analysis showed no significant difference between the two groups in terms of the rates of neonatal intensive care unit admission, neonatal death, fetal distress, meconium-stained water, Apgar score < 7 at 1 and 5 min, and mean Apgar score at 1 and 5 min. CONCLUSION: IMN correlated with several obstetric-related maternal outcomes. IMN was not associated with adverse neonatal outcomes, but was associated with substantial drug-related maternal side effects.

Prophylactic tranexamic acid among women undergoing vaginal delivery to reduce postpartum blood loss and related morbidities: A systematic review and meta-analysis of 17 randomized controlled trials.

OBJECTIVE: To conduct a systematic review and meta-analysis of all randomized controlled trials (RCTs) that inspected the efficacy and safety of prophylactic TXA compared with control (placebo/no treatment) among women undergoing vaginal delivery on reducing postpartum blood loss and related morbidities. METHODS: Six databases were screened from inception until 06-December-2021. The pooled data were summarized as mean difference or risk ratio, respectively, with 95% confidence interval in a fixed- or random-effects model. RESULTS: Sixteen studies comprising 17 RCT treatment arms were included. There were 7122 patients; 3611 and 3511 patients were allocated to prophylactic TXA and control groups, respectively. Overall, the included RCTs had a low risk of bias. Prophylactic TXA correlated with a significant decrease in mean postpartum blood loss and mean change in hemoglobin/hematocrit. Moreover, prophylactic TXA was linked to decreased incidence rates of postpartum hemorrhage, need for blood transfusion, and need for additional uterotonic agents. Nevertheless, prophylactic TXA culminated in significantly higher incidence rates of nausea, vomiting, and diarrhea, all of which were well-tolerated. There was no increased risk of thromboembolic events. Leave-one-out sensitivity analysis confirmed the robustness of efficacy endpoints. There was no publication bias for the endpoint of mean postpartum blood loss. CONCLUSION: Among patients undergoing vaginal delivery, prophylactic TXA during active management of third stage of labor (AMTSL) appeared largely safe and correlated with a significant decrease in postpartum blood loss and related morbidities compared with control intervention. Prophylactic TXA should be integrated as a "formal" component of AMTSL among women undergoing vaginal delivery.

Vasopressin to Control Blood Loss during Hysterectomy: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

OBJECTIVE: Minimizing intraoperative blood loss during hysterectomy is crucial to lessen associated perioperative morbidity. The aim of this investigation is to conduct a systematic review and meta-analysis of all randomized controlled trials (RCTs) that compared vasopressin versus normal saline in controlling intraoperative blood loss during hysterectomy. DATA SOURCES: We screened 5 major databases (PubMed, Scopus, Web of Science, Embase, and the Cochrane Central Register of Controlled Trials) from inception till July 18, 2021. We used the following query search in all databases: (vasopressin OR arginine vasopressin OR argipressin OR antidiuretic hormone) AND (hysterectomy) AND (saline OR placebo OR control OR no treatment) AND (randomized OR randomised OR randomly). There was no language restriction during database screening. METHODS OF STUDY SELECTION: We considered all studies that met the following evidence-based criteria: (1) patients: individuals undergoing hysterectomy for any indication, (2) intervention: vasopressin, (3) comparator: normal saline, placebo, or no treatment, (4) outcomes: reliable extraction of any of our endpoints, and (5) study design: RCTs. We assessed risk of bias of included studies and pooled endpoints as mean difference (MD) or risk ratio (RR) with 95% confidence interval (CI). We performed statistical analysis using the Review Manager software, version 5.4.0. TABULATION, INTEGRATION, AND RESULTS: Seven RCTs with an overall low risk of bias met the inclusion criteria. This meta-analysis included a total of 455 patients; 232 and 223 patients were allocated to vasopressin and control group, respectively. The majority of RCTs were vaginal hysterectomy (n = 5), few abdominal hysterectomy, (n = 2) and no laparoscopic hysterectomy. The mean estimated intraoperative blood loss was significantly lower in favor of the vasopressin group compared with the control group (n = 6 RCTs, MD = -119.85 mL, 95% CI [-177.55, -62.14], p <.001). However, there was no significant difference between both groups regarding mean operating time, mean change in postoperative hemoglobin, mean hospital stay, rate of febrile morbidity, rate of pelvic infection, rate of perioperative blood transfusion, and rate of perioperative complications. CONCLUSION: Compared with normal saline, vasopressin significantly reduced the estimated blood loss during hysterectomy but did not change any clinically significant outcomes. In addition, vasopressin was safe and did not correlate with an increase in the rates of febrile morbidity or pelvic infection.

17-alpha hydroxyprogesterone caproate for the prevention of recurrent preterm birth among singleton pregnant women with a prior history of preterm birth: a systematic review and meta-analysis of six randomized controlled trials.

To perform a systematic review and meta-analysis of all randomized controlled trials (RCTs) that investigated the clinical benefits of 17-alpha hydroxyprogesterone caproate (17OHPC) in the prevention of recurrent preterm birth (PTB) among singleton pregnant women with a previous history of PTB. We searched four major databases up till April 2021 and assessed the risk of bias in the included studies. We meta-analyzed various maternal-neonatal endpoints (n=18) and pooled them as mean difference or risk ratio (RR) with 95% confidence interval (CI) using the random-effects model. Six RCTs met the inclusion criteria, comprising 2,573 patients (17OHPC=1,617, control=956). RCTs revealed an overall low risk of bias. The rates of PTB <35 weeks (n=5 RCTs; RR, 0.77; 95% CI, 0.63-0.93; P=0.008), PTB <32 weeks (n=3 RCTs; RR, 0.68; 95% CI, 0.51-0.91; P=0.009), neonates with low birth weight (<2.5 kg) at delivery (n=3 RCTs; RR, 0.63; 95% CI, 0.5-0.79; P<0.001), and neonatal death (n=4 RCTs; RR, 0.41; 95% CI, 0.20-0.84; P=0.02) were significantly reduced in the 17OHPC group compared with the control group. Moreover, 17OHPC treatment correlated with a significantly decreased rate of retinopathy (n=2 RCTs; RR, 0.42; 95% CI, 0.18-0.97; P=0.004). However, there were no significant differences in the rates of neonatal intensive care unit admission, cesarean delivery, and other pretermrelated complications between both the groups. Among singleton pregnant women with a prior history of PTB, 17OHPC may favorably decrease the risks of recurrent PTB and reduce the rate of neonatal death.