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A series of questions and answers related to fetal monitoring, covering topics such as fetal heart rate variability, decelerations, and maternal-fetal oxygen transfer. It is a valuable resource for students and professionals in the field of obstetrics and maternal-fetal medicine.
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Which of the following is an extrinsic influence on the FHR? - CORRECT ANSWERS ✔✔C. Fetal-placental circulation The most highly oxygenated blood in fetal circulation is carried by: - CORRECT ANSWERS ✔✔C. Ductus venosus If fetal arterial pressure begins to fall below normal levels: - CORRECT ANSWERS ✔✔A. Baroreceptors cause vasoconstriction and increase the FHR Fetal heart rate variability is defined as fluctuations in the baseline that are irregular in _____ and _____. - CORRECT ANSWERS ✔✔B. Amplitude and frequency An increase in the fetal heart rate immediately preceding a variable deceleration is caused by: - CORRECT ANSWERS ✔✔A. Occlusion of the umbilical vein When assessing a FHR tracing, the first step is to: - CORRECT ANSWERS ✔✔C. Establish the baseline rate Which deceleration in the FHR is considered benign and does not require an intervention to correct? - CORRECT ANSWERS ✔✔A. Early deceleration
If the umbilical vein is the only vessel occluded during cord compression - CORRECT ANSWERS ✔✔B. Oxygenated blood may be restricted from being delivered to the fetus During a fetal sleep cycle, FHR variability is usually ____. - CORRECT ANSWERS ✔✔C. Minimal Uterine tachysystole is defined as: - CORRECT ANSWERS ✔✔B. > contractions in 10 mind over 30 minutes Maternal-fetal oxygen and nutrient transfer takes place in the: - CORRECT ANSWERS ✔✔B. intervillous space During a contraction, the tocodynamometer detects: - CORRECT ANSWERS ✔✔A. Pressure created by tensing of uterine muscle Normal fetal heart rate baseline is: - CORRECT ANSWERS ✔✔C. 110- 160 bpm Following birth, a fetal cord blood sample is taken. The results are: pH: 6. pCO2: 86 mmHg pO2: 4mmHg BE: -18.6 mEq/L These results are best interpreted as: - CORRECT ANSWERS ✔✔C. Mixed acidemia
Describe the type of variability seen in the majority of the tracing. - CORRECT ANSWERS ✔✔C. Absent Identify appropriate interventions to implement based on this tracing.
Robin has a cesarean birth, Umbilical arterial cord blood gas results are as follows: pH: 6. pCO2: 48 pO2: 4. BE: -23. These results meet the criteria for: - CORRECT ANSWERS ✔✔B. Metabolic acidemia What is the baseline rate? - CORRECT ANSWERS ✔✔B. 135 bpm What type of variability is observed? - CORRECT ANSWERS ✔✔C. Moderate What do you observe in the tracing that rules out metabolic acidemia at this time? - CORRECT ANSWERS ✔✔A: 15x15 accelerations What pattern is observed in the fetal heart tracing? - CORRECT ANSWERS ✔✔A. Late decelerations What extrinsic factor can you identify as a possible cause for the observed pattern? - CORRECT ANSWERS ✔✔C. Aging placenta What physiologic goals are priorities for Olivia's care? - CORRECT ANSWERS ✔✔B. Maximize oxygenation and maintain appropriate uterine activity
Based on your observation of the tracing, what action(s) is (are) required? - CORRECT ANSWERS ✔✔B. Palpate Shelby's radial pulse to verify maternal vs. fetal heart rate Which statement most accurately reflects the EFM tracing? - CORRECT ANSWERS ✔✔A. Maternal and fetal heart rates should be verified Which pattern in the fetal heart rate would increase suspicion of a nuchal cord? - CORRECT ANSWERS ✔✔C. Variable decelerations Shelby delivers a male infant with Apgar scores of 2 and 3. Umbilical arterial cord blood gases show: pH: 6. pCO2: 79 pO2: 11 BE: -7. What is the correct interpretation of the cod blood gas? - CORRECT ANSWERS ✔✔A. Respiratory acidemia