Fetal cardiac interval recorder

Area of Science:

• Cardiology
• Fetal Medicine
• Medical Instrumentation

Background:

• Fetal cardiac monitoring is crucial for assessing well-being during pregnancy and labor.
• Existing intrapartum monitors may not capture subtle changes in fetal cardiac performance.
• Understanding fetal cardiac intervals can provide insights into fetal response to various physiological and pathological conditions.

Purpose of the Study:

• To describe a novel recorder for continuous measurement of fetal cardiac cycle intervals.
• To evaluate the utility of specific intervals, such as R-S2, in reflecting fetal cardiac performance.
• To demonstrate how these intervals are affected by factors like drugs and acidemia.

Main Methods:

• Development of a recorder capable of measuring multiple fetal cardiac intervals.
• Primary focus on measuring the R-wave to second fetal heart sound (R-S2) interval.
• Exploration of other measurable intervals including R-R, R-A0, R-Pl, and R-Sc.

Main Results:

• The recorder successfully measures various fetal cardiac intervals continuously.
• The R-S2 interval and other measured intervals are shown to reflect fetal cardiac performance.
• Alterations in these intervals correlate with the presence of drugs and acidemia in the fetus.

Conclusions:

• The described recorder offers a new tool for detailed fetal cardiac assessment.
• Measured fetal cardiac intervals provide valuable information on fetal cardiac function.
• This technology has potential applications in monitoring fetuses exposed to drugs or experiencing acidemia.