What is the purpose of a vibroacoustic stimulation test?

Vibratory and sound stimulation may help to tell how well a baby is during labour when the heart beat is showing possible concerns. A baby’s heart rate is checked during labour to try to identify babies who are having difficulties.

What is a positive response in acoustic stimulation testing?

A positive response is defined as the rapid appearance of a qualifying acceleration following stimulation4. Perez-Delboy and colleagues (2002) randomized 113 women to nonstress testing with and without vibroacoustic stimulation. Such stimulation shortened the average time for nonstress testing from 24 to 15 minutes1.

Does fetal scalp stimulation diagnose fetal hypoxia?

Conclusion. The effectiveness of scalp stimulation test was poor for both ruling in and out fetal hypoxia during labor. Absence of a provoked acceleration seems to be a normal phenomenon in the second stage of labor.

When is a fetal scalp electrode used?

Fetal scalp electrode plays a key role in intrapartum fetal surveillance when there is a non-reassuring fetal heart rate (FHR) tracing or when external FHR monitoring is difficult due to maternal body habitus or excessive fetal movement. It is estimated that FSE is used in 20% of the U.S. obstetrical population.

What is the purpose of initiating contractions in a contraction stress test?

The contraction stress test helps predict how your baby will do during labor. The test triggers contractions and registers how your baby’s heart reacts. A normal heartbeat is a good sign that your baby will be healthy during labor.

Why is CTG used?

Cardiotocography (CTG) measures your baby’s heart rate. At the same time it also monitors the contractions in the womb (uterus). CTG is used both before birth (antenatally) and during labour, to monitor the baby for any signs of distress.

Why is CTG important?

The purpose of CTG recordings is to identify when there is concern about fetal well-being to allow interventions to be carried out before the fetus is harmed. The focus is on identifying fetal heart rate (FHR) patterns associated with inadequate oxygen supply to the fetus.