Fetal heart monitoring needs to be qualified in terms of fetal heart baseline, fetal movement, fetal heart rate during fetal movement, and no late deceleration of the fetal heart, with a composite score of 8 or more to be considered qualified.
1. Fetal heart baseline: the general time for fetal heart monitoring is 20 minutes, and the fetal heart baseline is the connecting line of the fetal heart rate during these 20 minutes. In the absence of contractions, the qualified fetal heart baseline should be maintained at 110~160 beats/min.
2. Fetal movement: During the 20 minutes of fetal heart rate monitoring, the fetus should have at least 3 fetal movements to be considered qualified. If the fetal movement is too little during the monitoring process, in order to prevent it is caused by fetal sleep, you can slightly stimulate the abdomen of the pregnant woman to wake up the fetus.
3. Fetal heart rate during fetal movement: When the fetus is moving, under normal circumstances, the fetal heart rate will rise rapidly, usually 15 times higher than the fetal heart rate at rest, maintained for more than 15 seconds to be considered qualified.
4. No late deceleration of the fetus: when the fetus is stimulated by contractions and other stimuli, the fetal heart rate will slow down, but after the contraction, the fetal heart rate will rise rapidly. If the fetal heart rate continues to slow down after a contraction, or if the fetal heart starts to slow down only after a contraction, this is called late deceleration. No late deceleration of the fetal heart is considered satisfactory for fetal heart rate monitoring.
Fetal heart rate monitoring is qualified only when the combined score of the above monitoring items is 8 or more. The specific situation needs to be judged by the clinician according to the specific situation of the pregnant woman.