There is evidence from studies of heart rate variability that relatively high levels
of sympathetic activity before spinal anaesthesia are associated with lower minimum
absolute values for systolic arterial pressure (SAP) during spinal anaesthesia for
caesarean section.
1
,
2
,
3
Two studies have also observed that a relatively high pre-spinal heart rate is associated
with lower minimum values for SAP, expressed as a proportion of baseline, during spinal
anaesthesia.
3
,
4
A prophylactic vasopressor was not used in these studies. We have re-examined data
from a previous study of women undergoing spinal anaesthesia for caesarean section,
5
to assess whether differences in pre-spinal heart rate are associated with differences
in the minimum value for SAP when a prophylactic vasopressor is given.To read this article in full you will need to make a payment
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References
- Heart rate variability predicts severe hypotension after spinal anesthesia for elective cesarean delivery.Anesthesiology. 2005; 102: 1086-1093
- Heart rate variability-guided prophylactic treatment of severe hypotension after subarachnoid block for elective cesarean delivery.Anesthesiology. 2006; 104: 635-643
- Using heart rate variability to stratify risk of obstetric patients undergoing spinal anesthesia.Anesth Analg. 2004; 99: 1818-1821
- Baseline heart rate may predict hypotension after spinal anesthesia in prehydrated obstetrical patients.Can J Anesth. 2002; 49: 185-189
- Fetal and maternal effects of phenylephrine and ephedrine during spinal anesthesia for cesarean delivery.Anesthesiology. 2002; 97: 1582-1590
Article info
Publication history
Published online: June 06, 2011
Accepted:
April 12,
2011
Identification
Copyright
© 2011 Elsevier Ltd. Published by Elsevier Inc. All rights reserved.