Factors associated with hypotension in pregnancy receiving spinal anesthesia for cesarean section in Chumphae hospital, Thailand
Keywords:
Spinal anesthesia, Maternal hypotension, PregnancyAbstract
Objective : The aim of this study is to determine risk factors of hypotension during spinal anesthesia for cesarean section in Chumphae hospital
Materials and Methods : This study is retrospective review in patients received spinal anesthesia for cesarean section in Chumphae hospital,Thailand during January 2011 to September 2015. Exclusion criteria were patients who received general anesthesia, inadequate spinal anesthesia and incomplete data. Descriptive statistic were presented as number, mean median, standard deviation (SD) for demographic data. Inferential statistic was used for factors that associated with hypotension by multivariable Analysis.
Result : The 1,300 patients were enrolled to this study. The incidence of hypotension (SBP < 100 mmHg or SBP > 20% of baseline) was 69.69%. The risk factors that increase incidence of hypotension included baseline systolic blood pressure <120 mmHg (P-value <0.01 and 95% CI 0.35- 0.75) and intraoperative blood loss was more than 1,000 ml(P-value <0.01).
Conclusion : From this study, the risk factors that increase incidence of hypotension in pregnancy undergoing cesarean section with spinal anesthesia included baseline systolic blood pressure <120 mmHg and intraoperative blood loss was more than 1,000 ml.
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