title: Ultrasonic assessment of fetal response to second-trimester amniocentesis.
abstract: Twenty-three patients undergoing second-trimester amniocentesis were ultrasonically monitored for 30 minutes before and 30 minutes after the amniocentesis. Fetal movements were recorded as movements of limbs, trunk, or combined limb-trunk movements. Fetal heart rates were determined at ten-minute intervals before and after the amniocentesis. No significant increase in total fetal movements, limb movements, trunk movements, or heart rate were found. A significant increase in combined fetal movements was observed. The authors conclude that amniocentesis in the second trimester elicits a change in fetal movement pattern.
mesh_terms: D000328:Adult; D000649:Amniocentesis; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005323:Fetal Monitoring; D005324:Fetal Movement; D005865:Gestational Age; D006339:Heart Rate; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D013997:Time Factors; D014463:Ultrasonography