Why the study?
Because subarachnoid block causes sympathetic blockade affecting hemodynamics, this study evaluated the correlation between baseline heart rate and post-spinal hypotension in parturients.
Does a baseline heart rate ≥ 91 bpm predict a higher incidence of hypotension following subarachnoid block in parturients undergoing LSCS?
Population
150 parturients aged >18 years with gestational age >32 weeks undergoing LSCS
Comparison
Baseline heart rate ≥ 91 bpm vs baseline heart rate ≤ 90 bpm
Design
Prospective observational study
Authors
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Baseline HR >100 bpm was associated with post-SAB hypotension in LSCS; hypothesis-generating and requires prospective validation before clinical consideration.
Does a baseline heart rate ≥ 91 bpm predict a higher incidence of hypotension following subarachnoid block in parturients undergoing LSCS?
Pre-operative baseline heart rate ≥ 91 bpm is a significant predictor of post-spinal hypotension and increased vasopressor requirement in parturients undergoing LSCS.
Verma et al. (2022) studied this question.