Why the study?
Does a prolonged PR interval on preoperative ECG predict intraoperative bradycardia in patients undergoing spinal anesthesia?
Population
537 patients undergoing spinal anesthesia who had preoperative ECGs performed within 6 months of surgery
Comparison
Prolonged PR interval on preoperative ECG vs Absence of prolonged PR interval on preoperative…
Design
Cohort
Follow-up
Intraoperative
Authors
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May support preoperative ECG review to flag bradycardia risk during spinal anesthesia; leaves open need for prospective validation before practice change.
Does a prolonged PR interval on preoperative ECG predict intraoperative bradycardia in patients undergoing spinal anesthesia?
A prolonged PR interval on preoperative ECG is an independent predictor of intraoperative bradycardia during spinal anesthesia, increasing the odds by 3.2-fold.
Liu et al. (1995) studied this question.
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