Case 1: Ms. PS

Ms. PS is a 24 yo G2P0100 at 32.4 weeks gestation admitted for severe preeclampsia. She has a history of a classical Cesarean Delivery at 24.2 in a pregnancy complicated by HELLP syndrome with a subsequent neonatal demise. At admission, her fetal tracing had a baseline of 135 with minimal variability, no accelerations, and no decelerations 4 hours ago. She has received one dose of Betamethasone for fetal lung maturity approximately 3 hours ago. Ultrasound reveals a fetus with 4%ile growth and a lagging abdominal circumference. There is absence of end-diastolic flow in the umbilical artery. She is currently on magnesium sulfate at 2 g/hr, and has received one dose of intravenous Labetolol, 20 mg, approximately two hours ago. Her current blood pressure is 153/97, pulse 86, temperature 99.1, respirations 18, O2 saturation is 96% on room air. Her deep tendon reflexes are 3+/4, her lungs are clear, and she has had 250 ml of urine output in the last 4 hours. Her urinalysis reveals 3+ proteinuria. Her liver enzymes are within normal limits and her platelets are 112. She presently denies headache, visual changes, shortness of breath, chest pain, or right upper quadrant pain. Below is her current fetal tracing:

Please answer the following questions: 

1. What is the baseline of the FHT?
Correct. Remember, the baseline is the average heart rate rounded to the nearest five bpm.
Incorrect. Remember, the baseline is the average heart rate rounded to the nearest five bpm. To review baseline heart rate go to, Baseline.
2. Describe the variability.
Correct. Minimal variability should be very worrisome in the clinical context, though it may be blunted by both magnesium sulfate and betamethasone.
Incorrect. The answer is minimal. To review variability go to, Baseline Variability.
3. Are there accelerations present?
Correct. There are no accelerations present.
Incorrect. There are no accelerations present. Click here to review.
4. Are there decelerations present?
Correct. There are repetitive late decelerations which are ominous in this setting.
Incorrect. There are repetitive late decelerations which are ominous in this setting.
5. Are contractions present?
Correct. Though subtle, her contractions are every 3-4 minutes.
Incorrect. Though subtle, her contractions are every 3-4 minutes.
6. Is this FHT reassuring?
Correct. This tracing requires immediate intervention.
Incorrect. This tracing requires immediate intervention.

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