PMID: 2117061Jan 1, 1990Paper

Fetal heart rate responses to anemia in Rh isoimmunization

Journal of Perinatal Medicine
P OlofssonM Westgren

Abstract

On 52 occasions 24 Rh immunized women were monitored with a nonstress test (NST) prior to fetal blood sampling. Cardiotocographic characteristics were recorded for each NST. Fetal blood was analysed for hemoglobin and hematocrit. Fetal hemoglobin and hematocrit were positively correlated to long-term variability, acceleration amplitude and negatively correlated to deceleration amplitude (linear regression analysis; p less than 0.05). Decelerations were almost without exception associated with low concentrations of hemoglobin and hematocrit. In fetuses of 32 weeks' gestation or more, a loss of variability (less than or equal to 5 bpm) was associated with severe anemia. Hemoglobin and hematocrit were significantly lower in the group with a pathological NST (n = 15) compared with the group with a normal NST (n = 37) (Mann-Whitney U test; p less than 0.05). The predictive value of a pathological test was 13/15 concerning hemoglobin and hematocrit; whereas, the predictive value of a normal test was poor. A pathological NST, especially when decelerative, is a good predictor of fetal anemia, but a normal NST is no guarantee for a normal blood status.

References

Aug 1, 1989·American Journal of Obstetrics and Gynecology·K H NicolaidesE Cetin
May 1, 1989·American Journal of Obstetrics and Gynecology·K H NicolaidesG H Visser
Sep 1, 1987·British Journal of Obstetrics and Gynaecology·P W SoothillC H Rodeck
Mar 26, 1988·British Medical Journal·M WestgrenM Stangenberg
Jan 1, 1987·Journal of Perinatal Medicine·X De Muylder
Mar 1, 1988·Clinical Obstetrics and Gynecology·K H Nicolaides
Nov 15, 1985·American Journal of Obstetrics and Gynecology·F DaffosF Forestier
May 1, 1984·Ultrasound in Medicine & Biology·P Jouppila, P Kirkinen
Jul 1, 1982·American Journal of Obstetrics and Gynecology·G H Visser

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Citations

Oct 16, 2018·Minerva ginecologica·Pedro S Argoti, Giancarlo Mari

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