Association between COVID-19 lockdown measures and the incidence of iatrogenic versus spontaneous very preterm births in the Netherlands: a retrospective study.

Background: The COVID-19 pandemic led to regional or nationwide lockdowns as part of risk mitigation measurements in many countries worldwide. Recent studies suggest an unexpected and unprecedented decrease in preterm births during the initial COVID-19 lockdowns in the first half of 2020. The objective of the current study was to assess the effects of the two months of the initial national COVID-19 lockdown period on the incidence of very and extremely preterm birth in the Netherlands, stratified by either spontaneous or iatrogenic onset of delivery, in both singleton and multiple pregnancies.

Prediction of Time to Delivery Week-by-Week in Women with a Triplet Pregnancy.

 Some clinicians advise prophylactic administration of antenatal steroids for fetal lung maturation in women with a triplet pregnancy. However, the effect of corticosteroids is limited to 10 to 14 days after administration. The aim of this study was to assess the natural course of triplet pregnancies to allow a better anticipation for administration of corticosteroids.

Ketanserin versus dihydralazine for the treatment of severe hypertension in early-onset preeclampsia: a double blind randomized controlled trial.

Objective: Determine the definitive position of ketanserin and dihydralazine for treatment of severe hypertension in pregnancy.

Study Design: A single centre double blind randomized controlled trial was performed at the obstetrical tertiary high care unit of the University Medical Centre in Rotterdam, the Netherlands. Women with severe hypertension in pregnancy (diastolic blood pressure (DBP)≥110mmHg), and significant proteinuria (≥300mg/24h), and gestational age≤32 weeks were eligible for the study.

Fermentation and Sulfur Reduction in the Mat-Building Cyanobacterium Microcoleus chthonoplastes.

The mat-building cyanobacterium Microcoleus chthonoplastes carried out a mixed-acid fermentation when incubated under anoxic conditions in the dark. Endogenous storage carbohydrate was fermented to acetate, ethanol, formate, lactate, H(inf2), and CO(inf2). Cells with a low glycogen content (about 0.