AWHONN Intermediate Fetal Monitoring Exam (Answered 100% Correctly), Exams of Obstetrics

Download AWHONN Intermediate Fetal Monitoring Exam (Answered 100% Correctly) and more Exams Obstetrics in PDF only on Docsity! AWHONN Intermediate Fetal Monitoring Exam (Answered 100% Correctly) If fetal arterial pressure begins to fall below normal levels: A. BARORECEPTORS CAUSE VASOCONSTRICTION AND INCREASE THE FHR An increase in arterial blood pressure produces vessel distension and causes arterial baroreceptors to send neuronal messages to the cardioinhibitory center, which in turn causes rapid slowing of the fetal heart rate via the parasympathetic vagus nerve. A decrease in arterial pressure results in an increased heart rate. Which of the following is an extrinsic influence on the FHR? Fetal-placental circulation Fetal heart rate vaiability is definded as fluctuations in the baseline that are irregular in AMPLITUDE and FREQUENCY The most highly oxygenated blood in fetal circulation is carried by: Ductus venosus An increase in the fetal heart rate immediately preceding a variable deceleration is caused by: Occlusion of the umbilical vein The etiology of variable decelerations is likely related to umbilical venous and arterial occlusion. Initially, with occlusion of the thin-walled umbilical vein, venous return to the fetal right atrium is reduced, producing a reflex tachycardia. This pattern often is observed as a shoulder on the FHR monitor strip immediately before the abrupt variable FHR deceleration When assessing a FHR tracing, the first step is to Estabilish the baseline rate Which deceleration in the FHR is considered benign and does not require an intervention to correct? Early deceleration If the umbilical vein is the only vessel occluded during cord compression Deoxygenated blood cannot be removed from fetal circulation During umbilical cord compression, the vein on the umbilical cord becomes compressed leading to CO2 (carbon dioxide) to accumulate in your baby's blood, which produces respiratory acidosis. Source: https://americanpregnancy.org/healthy-pregnancy/pregnancy- complications/umbilical-cord-prolapse/ During a fetal sleep cycle, FHR variability is usually