[Fetal challenge tests and non-stress tests. An analysis and comparison of the possibilities of predicting perinatal problems].
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Apgar Score↗
Biomedical subjects
S Neldam
Publications and source records attributed to S Neldam.
Fetal activity acceleration determination.
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Female↗
Fetal movements as an indicator of fetal wellbeing.
The value of maternal monitoring of fetal movements (FM) was assessed in 2250 pregnant women. Half of the women were taught to count FM methodically and contact the hospital if they felt less than 3 FM per hour. The controls were not given any specific instructions about counting FM. There were 8 intrauterine deaths in infants weighing more than 1500 g without major malformations in the control group and no deaths in the group with maternal monitoring of FM. These results demonstrate that maternal monitoring of FM can aid the opportune delivery of infants who are at increased risk of intrauterine death.
Adult↗
Fetal movements registered by the pregnant woman correlated to retrospective estimations of fetal movements from cardiotocographic tracings.
After reviewing 30 cardiotocographic tracings from 15 pregnant women who directly registered fetal movements (FM) on the cardiotocographic (CT) tracings, we have found no correlation between the actual number of FM and the FM found by retrospective estimation from CT tracings. Ours is the first study to show this lack of correlation. On the contrary, we have found that by using the "retrospective" or "indirect" methods, almost 90% of the FM are overlooked. This is a very important loss of information since registration of FM seems to be a good method for surveillance of the fetus at risk. We also discuss our own methods for overcoming these problems.
Female↗
Fetal heart rate response to amniocentesis in early pregnancy.
Fetal heart rate (FHR) was studied during 14 consecutive amniocenteses in the 15th to 16th week of gestation by means of an ultrasound FHR monitor making beat to beat registration. FHR was monitored for 15 min prior to amniocentesis and 30 min after the procedure. The amount of fluid aspirated varied between 20 and 30 ml. In seven amniocenteses the fetuses reacted with reduced fetal heart rate variability, "silent pattern". The beat to beat variation fell from a level of 15-20 beats per min to 0-1 beat per min, starting four minutes after the amniocentesis, and lasting for two minutes. This pattern was never seen in the baseline study periods prior to amniocentesis (p < 0.01). The most likely explanation for this new observation seems to be that some fetuses are influenced by the reduction of amniotic fluid and stay immobile for some time.
Adult↗