Technologies in Modern Pregnancy Care

Technology in Modern Pregnancy Care: Safer Pregnancies Through Earlier Screening — and Why the Obstetrician Must Keep Up

In short: Pregnancy care today can predict and prevent problems that once appeared without warning. A blood test from the mother screens the baby for Down syndrome, first-trimester screening followed by low-dose aspirin can prevent many cases of early pre-eclampsia, high-resolution and 3D/4D ultrasound show the baby in detail, and some conditions can now be treated before birth. These tools protect mothers and babies only when used by an obstetrician who keeps learning, interprets results correctly and knows the limits of each test.

For generations, antenatal care meant checking blood pressure, urine and the size of the bump, and reacting when a problem appeared. Modern obstetrics aims to identify the mother or baby at risk early, while there is still time to act. Here are the most important developments, and what an obstetrician must do to use them well.

Screening for the baby’s health

·       Cell-free DNA testing (NIPT): from about 10 weeks, a blood sample from the mother contains fragments of the baby’s DNA, which can be analysed to screen for Down syndrome and some other chromosomal conditions with high accuracy. It is a screening test: a “high-risk” result must be confirmed by a diagnostic test such as amniocentesis before any decision. See our article on [cell-free fetal DNA testing](/cell-free-fetal-dna-testing/).

·       Early anatomy scan: high-resolution ultrasound at 11–14 weeks can already detect many major abnormalities, and the detailed scan at 18–22 weeks examines the baby’s organs and heart.

·       Genetic tests after an abnormal scan: chromosomal microarray and, in selected cases, exome sequencing can find the cause of an abnormality far more often than older tests, helping parents and doctors plan.

·       3D and 4D ultrasound: they show the face, limbs and some anomalies more clearly, and help parents understand what the doctor sees. Read more in our article on [the importance of 4D ultrasound in pregnancy](/the-importance-of-4d-ultrasound-imaging-in-pregnancy/).

Protecting the mother

·       Pre-eclampsia screening and prevention: combining the mother’s history, blood pressure, a Doppler scan of the uterine arteries and a blood marker (PlGF) at 11–14 weeks identifies women at high risk. Low-dose aspirin started before 16 weeks in these women greatly reduces early preterm pre-eclampsia, as shown in a large international trial. See our article on [pre-eclampsia and pregnancy hypertension](/pre-eclampsia-and-pregnancy-hypertension/).

·       Blood tests that predict pre-eclampsia: in a woman with suspected pre-eclampsia later in pregnancy, the sFlt-1/PlGF ratio helps doctors tell who is likely to develop severe disease in the coming days and who can safely go home.

·       Diabetes and blood pressure at home: continuous glucose monitors improve control in women with type 1 diabetes, and home blood-pressure monitoring with telemedicine allows closer follow-up with fewer hospital visits.

·       Preventing preterm birth: measuring the length of the cervix by vaginal ultrasound identifies women at risk, and vaginal progesterone can reduce preterm birth when the cervix is short.

·       Bleeding after birth: the World Health Organization now recommends measuring blood loss accurately (for example with a calibrated collection drape) and treating it early with a bundle of measures that includes tranexamic acid. This simple change reduces severe bleeding.

Treating the baby before birth

In specialised fetal medicine centres, some conditions can be treated in the womb: laser treatment for twin-to-twin transfusion syndrome in identical twins, blood transfusion for severe fetal anaemia, and surgery for spina bifida before birth in selected cases. The general obstetrician’s role is to recognise these conditions early and refer quickly.

Using technology wisely

Technology can also be misused. Home heart-rate monitors and pregnancy apps can falsely reassure a mother when her baby is actually moving less, so any change in the baby’s movements must be checked by the hospital, not at home. Ultrasound is safe when used for a medical reason, but scans should not be prolonged unnecessarily. And no screening test is perfect: a good obstetrician explains what each result means and what it cannot tell.

How an obstetrician keeps up

·       Guidelines: RCOG Green-top guidelines, the International Federation of Gynecology and Obstetrics (FIGO), the World Health Organization recommendations on antenatal and intrapartum care, the UK NICE antenatal care guidelines, and the American College of Obstetricians and Gynecologists (ACOG).

·       Ultrasound and fetal medicine training: the free online courses and certificates of competence of the Fetal Medicine Foundation (for example in nuchal translucency and pre-eclampsia screening), and the guidelines and courses of the International Society of Ultrasound in Obstetrics and Gynecology (ISUOG).

·       Journals and evidence: Ultrasound in Obstetrics & Gynecology, BJOG, the American Journal of Obstetrics and Gynecology, and Cochrane reviews on pregnancy and childbirth.

·       Emergency drills: regular team training for obstetric emergencies such as severe bleeding, shoulder dystocia and eclampsia, because skills fade when they are not practised.

·       Audit and quality: reviewing outcomes such as caesarean rates, complications and stillbirths, and learning from every serious event.

Why it matters

In pregnancy, outdated knowledge can cost two lives. An obstetrician who does not keep up may miss the chance to prevent pre-eclampsia with aspirin, miss a heart abnormality that could have been treated at birth, fail to refer a twin pregnancy in time, or use a treatment that has been shown to be ineffective. Continuous learning is part of the promise every obstetrician makes to the mothers in their care.

Our approach

Dr. Najeeb Layyous has 45 years of experience in obstetrics and gynaecology, is a member of the Cyber 3D-Ultrasound Society, and his 3D and 4D ultrasound images have appeared in 303 publications worldwide. He follows international guidelines in antenatal care and childbirth, and combines modern screening with careful clinical follow-up for every mother.