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To our knowledge, there are limited data to suggest that there is an association between prophylactic use of low-dose aspirin and increased risk of progression of SARS-CoV-2 infection. In our opinion, during the COVID-19 pandemic, it is still essential to provide first-trimester screening for placental complications and to prescribe low-dose aspirin in women who are identified as high risk for pre-eclampsia and fetal growth restriction. [Extracted from the article]

The article presents the author's views on the non-invasive prenatal testing (NIPT) for pregnant women who want to detect trisomy 21 in their unborn child. It states that NIPT improve the quality of prenatal testing for fetal abnormalities. It further discusses aneuploidy screening, chromosomal microarray analysis and testing in pregnancy.

The Colton (Coa) antigen is of high frequency; its incidence in Caucasians is about 99.8%. Reports on haemolytic transfusion reactions and haemolytic disease of the foetus/newborn (HDFN) due to anti-Coa are rare. We report a severe HDFN due to anti-Coa. The first child of the mother was healthy. The second died a few hours after delivery because of hydrops fetalis, likely due to HDFN; anti-Coa in the maternal serum, the father typed as Co(a+). The third pregnancy was followed up by the measurements of anti-Coa titre (additional antibodies were excluded), its functional activity by the chemiluminescence test (CLT) and the Doppler flow in the middle cerebral artery of the foetus. Increased values of antibody titre up to 128, the CLT to 30% and multiplex of median of the peak systolic velocity to 1·71 indicated haemolytic disease and the necessity for an intrauterine transfusion. The foetus received the maternal red blood cells (RBCs). Delivery had to be by Caesarean section for obstetrical reasons at 34-week gestation. The newborn (anti-Coa on red cells and in plasma, the rise of the bilirubin concentration up to 333 μmol L−1) had four exchange transfusions: the first of maternal RBCs, the remaining of donor’s Co(a+) cells and one top-up transfusion. The baby was discharged in good health. Anti-Coa was responsible for severe HDFN. Proper monitoring during pregnancy and antenatal and post-natal therapy were successful. This is the second severe published HDFN due to anti-Coa. [ABSTRACT FROM AUTHOR]

The article presents a case study of a 35-year-old gravida suffering from Galen aneurysmal malformation. The patient underwent ultrasound scan which showed fetal hydrops, impaired contractility and cardiomegaly. She was also diagnosed with dural sinus malformation (DSM) in the fetus indicating edema.

An abstract of the conference paper "Transvaginal cervical length measurement as a predictor of preterm delivery in IVF patients," by M. Wielgos and colleagues is presented.

A letter to the editor is presented concerning the medical prognosis of spontaneous preterm birth (PTB) using biophysical ultrasound anterior cervical angle (ACA).

A letter to the editor is presented in response to the article "Sonographic Estimation of Fetal Head Circumference: How Accurate Are We?" by N. Melamed and colleagues in the January 2011 issue

An abstract of the conference paper "Is mid-gestational cervical length measurement as sensitive prediction factor of preterm delivery in IVF as in spontaneous singleton pregnancies?," by I. Szymusik and colleagues is presented.

An abstract of the conference paper "Cervical bacterial colonization and cervical length in women with threatening preterm labor," by D. A. Bomba-Opon and colleagues is presented.

An abstract of the conference paper "Thrombocytopenia in neonates treated by repeated intrauterine transfusions," by R. Bartkowiak and colleagues, is presented.

An abstract of the conference paper "The evolution of indications for amniocentesis-four years experience after introduction of skrining programme," by P. Wegrzyn and colleagues is presented.

An abstract of the conference paper "NT-proBNP concentrations and MCA velocimetry in fetuses severely affected by feto-maternal isoimmunisation-preliminary report," by K. Luterek and colleagues is presented.

An abstract of the conference paper "Comparison of conventional and three-dimensional sonohysterography in the assessment of submucous uterine myomas before their hysteroscopic resection," by R. Bartkowiak and colleagues is presented.

An abstract of the conference paper "Placental measurements in the first trimester and adiponectin, leptin and insulin plasma concentrations," by D. A. Bomba-Opon and colleagues is presented.