Balance of long-term benefits and risks of caesarean delivery explained
Caesarean delivery has immediate known benefits and risks for those women who need help in childbirth. This review measures the long-term outcomes for the mothers’ health, the links to a higher risk of childhood illness and the chance of problems with future pregnancies.
The large review of 80 studies from high-income countries used data from nearly 30 million women and compared caesarean section with vaginal delivery. Caesarean delivery was associated with a lower risk of urinary inconti...
Cell salvage during caesarean section doesn’t reduce blood transfusions
In a large UK trial, cell salvage for women at risk of blood loss during caesarean did not reduce the need for donor blood transfusion, though few needed transfusion (2.5% compared with 3.5% among controls).
More babies are being born by caesarean section and if blood loss is excessive, transfusions may be required, probably by about one in 20 women. Collecting the mother’s own lost blood during the procedure, filtering and returning it to her (cell salvage) is a potential alternative tha...
Domperidone increases breast milk production in mothers of premature babies
The drug domperidone increases the amount of breast milk women produce. This review looked at its use for up to two weeks in women with premature babies being fed with expressed milk. Women had a moderate increase in breast milk of about 88ml a day, a clinically important increase for these small babies.
Domperidone is an anti-sickness medication. It has not been widely used to increase breast milk because of unknown effectiveness and concerns that it can cause an irregular heart rhythm with lo...
Imaging is the only way to diagnose blood clots in pregnancy
No blood test can accurately tell if a pregnant or recently pregnant woman has a blood clot. All pregnant women with a suspected clot should continue to have imaging investigations as per current UK guidelines.
This NIHR-funded study recruited 328 pregnant or postpartum women with a suspected blood clot in the lung (pulmonary embolism) or leg (deep vein thrombosis). They had a blood test to measure the levels of 13 biomarkers, such as the D-dimer, to see if they could rule a blood clot in or ou...
Waiting at home after inducing labour mechanically may be an option for low-risk women
Maternal or fetal complications, following the insertion of a balloon catheter to induce labour, are rare. Pain or discomfort was most common affecting around 1 in 400 women. Balloon displacement, bleeding or abnormal fetal heart rate affected less than 1 in 1,000.
The catheter is a device inserted through the cervix, where inflated balloons on the end of a tube put pressure on the cervix helping it to “ripen” and start contractions. Prostaglandin drugs are the current recommended i...
Diabetes drug aids fertility in women with polycystic ovaries
The diabetes drug metformin may help women with polycystic ovarian syndrome who are having problems getting pregnant, but it is unclear whether it works better than an alternative fertility drug that stimulates the ovaries.
This study updates a previous review of trials that compare metformin with placebo, no treatment or with the fertility drug clomifene. It summarised results of 48 studies, including 4,451 women. The study found that metformin may work better than placebo or no treatment and ...
Delayed umbilical cord clamping reduces hospital mortality for preterm infants
Delays to clamping the umbilical cord of about a minute can reduce hospital mortality for preterm infants by around 32%. Delayed clamping also reduced the proportion of infants needing a blood transfusion by 10%.
This review adds more precise data on survival from new trials including a large Australian trial (over 1,600 babies) to a previous Cochrane 2012 review of trails including 738 infants and provides new more precise data on the survival benefit.
These findings are consistent with curre...
Early use of tranexamic acid reduces bleeding more effectively
In people bleeding after trauma or giving birth, tranexamic acid within an hour of the start of bleeding increases the chances of survival by 72% compared with a placebo. Overall the trial data showed that at least six deaths from bleeding complications were prevented for every 1,000 people treated and potentially more if treatment is started early.
Tranexamic acid is an antifibrinolytic drug which reduces the breakdown of blood clots and is known to reduce serious bleeding. The researchers wan...
Single urine samples are just as good as 24-hour collections for diagnosing pre-eclampsia
The urine spot albumin-creatinine ratio (which is done on a single, on-the-spot sample) reliably identified 99% of pregnant women with high blood pressure who went on to develop severe pre-eclampsia. The spot protein-creatinine ratio, as currently recommended by NICE, was slightly less sensitive identifying over 90% of women. Both spot tests were good value for money.
Nearly 1,000 women, suspected of having pre-eclampsia, took part in this NIHR-funded study, in 36 UK obstetric units. They had h...
Lying on one’s side in labour with an epidural is safe and leads to more spontaneous births
Women who lie on their side in the second stage of labour after a low-dose epidural are more likely to give birth spontaneously than those who remain upright when actively contracting. Lying down on either side doesn’t appear to be harmful to mothers or babies. This means that 17 of these women would need to lie on their side instead of maintaining an upright position for one more of them to have an unassisted or “spontaneous” birth.
This UK trial looked at how position in lab...