24 hour-CTG monitoring: comparison of normal pregnancies and pregnancies with placenta insufficiency
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Maritta Kühnert
Abstract
Aims: Routinely antepartal CTG will be recorded for 30 minutes to obtain normal resting phases, a decrease of irregulatory due to hypoxia or to differentiate these from each other. In case of early onset of hypoxia first pathological findings might only be seen by chance in incidentally recorded CTG. The goal of this study was, if a continuous 24 hour-CTG will allow an earlier detection of beginning hypoxia in case of placental insufficiency compared to a routine CTG of 30 minutes.
Methods: 21 normal pregnancies and 17 patients with placental insufficiency of ≥ 36 weeks had 24 hour-CTG's by means of telemetry. In both study groups fetal heart rate (FHR) tracing included a full qualitative and quantitative description. Comparison of the results of both groups was done to look for early signs of pathological findings concerning reduced fetal well-being.
Results: In comparison to normal pregnancies patients with placental insufficiency had in 4.5% oscillation frequency type A and an increase of saltatory and silent oscillation. The number of accelerations and Dip 0 was significantly reduced as well as accelerations in combination with undulatory oscillation. Baseline tachycardia and bradycardia showed significantly increasing quantity.
Conclusions: 24 hour-CTG is a good screening method to detect early onset of hypoxia in case of beginning placental insufficiency. The failure to find any clinically significant difference in the diurnal variation of both groups suggests, that less than 24 hour testing is required. 8 hour-CTG could be a compromise and a big help to detect a fetus at risk earlier.
Copyright © 2001 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Fetal pulse oximetry: current issues
- Ketanserin for the treatment of preeclampsia
- 11β-hydroxysteroid dehydrogenase (11β-HSD-II) activity in human placenta: Its relationship to placental weight and birth weight and its possible role in hypertension
- Cervical incompetence: the use of selective and emergency cerclage
- Detection of cervical immunoglobulin A in normal pregnancy
- 24 hour-CTG monitoring: comparison of normal pregnancies and pregnancies with placenta insufficiency
- Chlamydia trachomatis infection and the risk of perinatal mortality in Hungary
- Respiratory distress in heavier versus lighter twins
- Superior mesenteric artery blood flow velocity in small for gestational age infants of very low birth weight during the early neonatal period
- Longitudinal observation of deterioration of Doppler parameters, computerized cardiotocogram and clinical course in a fetus with growth restriction
- First-trimester ultrasonographic investigation of cardiovascular anatomy in thoracoabdominally conjoined twins
- Low taurine, gamma-aminobutyric acid and carnosine levels in plasma of diabetic pregnant rats: consequences for the offspring
- Spastic diplegia is not associated with intrapartum hypoxia
