Key result
High-frequency heart rate variability and baseline heart rate predicted severe bradycardia (<45 b.p.m.) during spinal anaesthesia with a sensitivity of 65% and specificity of 74%.
Why the study?
Does preoperative Heart Rate Variability (HRV) assessment predict the development of severe bradycardia during spinal anaesthesia in healthy patients?
Population
80 ASA I-II patients, 21-60 years of age, undergoing elective surgery under spinal anaesthesia
Design
Cohort
Follow-up
during spinal anaesthesia
Authors
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HRV may flag patients at risk for severe bradycardia during spinal anesthesia; leaves open whether risk stratification improves outcomes.
Observational (n=80)
Does preoperative Heart Rate Variability (HRV) assessment predict the development of severe bradycardia during spinal anaesthesia in healthy patients?
Effect estimate: Sensitivity 65%, Specificity 74%
p-value: p=<0.05
Preoperative assessment of high-frequency heart rate variability and baseline heart rate can help identify patients at risk for severe bradycardia during spinal anaesthesia.
Chatzimichali et al. (2010) conducted an observational in Elective surgery under spinal anaesthesia (n=80). High-frequency (HF) component of Heart Rate Variability (HRV) and baseline heart rate vs. Low HF component / different baseline heart rate was evaluated on Severe bradycardia (<45 b.p.m.) during spinal anaesthesia (Sensitivity 65%, Specificity 74%, p=<0.05). High-frequency heart rate variability and baseline heart rate predicted severe bradycardia (<45 b.p.m.) during spinal anaesthesia with a sensitivity of 65% and specificity of 74%.
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