Why the study?
Does the low-frequency/high-frequency ratio of heart rate variability predict hypotension following spinal anesthesia in patients undergoing elective caesarean section?
Population
102 patients undergoing elective caesarean section in a South African regional hospital
Comparison
Heart rate variability measured via Holter… vs Baseline heart rate and body mass index (BMI)
Design
Cohort
Follow-up
From spinal insertion until 15 min after delivery
Authors
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LF/HF ratio was associated with post-spinal hypotension in caesarean delivery; leaves open whether preoperative HRV analysis improves risk stratification.
Does the low-frequency/high-frequency ratio of heart rate variability predict hypotension following spinal anesthesia in patients undergoing elective caesarean section?
Pre-operative heart rate variability analysis, specifically a low-frequency/high-frequency ratio threshold of 2.0, is a potentially useful clinical tool for predicting post-spinal hypotension during caesarean section.
Bishop et al. (2017) studied this question.
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