IN October 2003 the National Institute for Clinical Excellence (NICE) and the National Collaborating Centre for Women's and Children's Health published a guideline for the National Health Service (NHS) in England and Wales on the routine care of healthy pregnant women.1 In the press release, Andrea Sutcliffe, an executive director at NICE said:
The guideline itself is indeed an authoritative document, spanning 304 pages and including 631 references. With such an in-depth consideration of the evidence, which has become the hallmark of NICE, and the collaboration with expert bodies — including the Royal College of Obstetricians and Gynaecologists, the Faculty of Family Planning and Reproductive Health Care, the Royal College of Paediatrics and Child Health, the Association for Genito-Urinary Medicine, Medical Society for the Study of Venereal Diseases, and the Royal College of Midwives — surely the guidance will be accepted and implemented across the NHS. In particular, the community midwives and general practitioners (GPs) who carry out most of the antenatal care for pregnant women would be happy to accept such guidance without further ado, but however well researched guidelines are, they are not always implemented.3
At the time of publication, there was a curious local dilemma for my practice that highlighted the much larger issue of why such guidance will inevitably be implemented only partially, with some recommendations not implemented at all. The significance of decreased fetal movements is accepted by only one of our two local hospitals. One advocates ‘kick charts’, the other has no need for them. So how should midwives and GPs respond to a woman who presents having noticed a reduction in fetal movements? Arranging immediate transfer to the maternity unit for cardiotocography would be normal for one hospital and not for the other, but clearly the decision should rest on the clinical assessment of the patients, that is, mother and fetus, and not on where the delivery is planned to take place. The new guidance from NICE makes a clear recommendation based on the strongest category of evidence (Box 1).
Box 1. Routine monitoring of fetal movements.1
There is often no obvious cause of late fetal death of normally formed singleton births. Many of these deaths are unpredictable and occur in women who are healthy and who have had otherwise uncomplicated pregnancies.
Maternal recognition of decreased fetal movement has long been used during antenatal care in an attempt to identify the jeopardised fetus and intervene to prevent death. Given the low prevalence of fetal compromise and an estimated specificity of 90% to 95%, the positive predictive value of the maternal perception of reduced fetal movements for fetal compromise is low, 2% to 7%.4
One RCT (randomised controlled trial) was found that assessed the ability of the ‘count to 10’ method to reduce the prevalence of antenatal fetal death.5 [Evidence level 1b] The method records on a chart the time interval each day required to feel 10 fetal movements. This cluster RCT randomised 68 000 women to either routine formal fetal-movement counting or to standard care. It found that there was no decrease in perinatal mortality in the test group and this policy would have to be used by about 1250 women to prevent one unexplained death.
Following a reduction in fetal movements women should be advised to contact their midwife or hospital for further assessment.
The evidence does not support the routine use of formal fetal movement counting to prevent late fetal death.
Recommendation
Routine formal fetal-movement counting should not be offered. [A]
Given this recommendation, health professionals and pregnant women should abandon any formal monitoring of fetal movements as a screening process, but the issue is less black and white than it first seems. The question faced by all professionals in antenatal care is when to accept that fetal movements have been reduced for long enough to warrant intervention. No-one has suggested that reduced fetal movements over 1 hour gives any concern, but all would agree that no movements felt at all over several days would be a serious symptom. Abandoning routine fetal-movement counting will not stop women noticing when their baby seems unusually quiet; those in the front line, then, need to know when a reduction in movements really matters, and what to do about it.