AI Article Synopsis
- A systematic review was conducted to compare norepinephrine and phenylephrine for treating postspinal hypotension during cesarean sections, analyzing 15 eligible studies.
- Despite both medications showing comparable efficacy, norepinephrine significantly reduced maternal bradycardia by 61% compared to phenylephrine.
- Additionally, while norepinephrine showed higher umbilical artery pH values, the differences in other maternal adverse effects and fetal outcomes were not significant.
Article Abstract
Introduction: Multiple studies have compared varying prophylactic and therapeutic doses of norepinephrine and phenylephrine given as either intermittent bolus or fixed-rate infusion to combat postspinal hypotension in patients undergoing cesarean section (CS). We conducted a systematic review to figure out the best alternative to treat postspinal hypotension.
Evidence Acquisition: PubMed and Cochrane databases were extensively searched for eligible RCTs. A total of 15 studies were found eligible and analyzed for the incidence of maternal bradycardia as the primary outcome and other maternal adverse effects, fetal acidosis and Apgar scores at 1 and 5 min as the secondary outcome. Data was analyzed using Review Manager Version 5.3. software.
Evidence Synthesis: There was no significant difference in the efficacy of norepinephrine and phenylephrine for managing postspinal hypotension (OR=1.15 [95% CI: 0.91-1.45], P=0.24, I=0%,moderate quality) in parturients undergoing CS. Odds of incidence of maternal bradycardia decrease significantly by 61% with norepinephrine versus phenylephrine (OR=0.39 [95% CI: 0.31-0.49], P<0.00001, I=27%, high quality evidence). Significant higher umbilical artery mean pH values were observed with NE versus PE (MD=0.0 [95% CI: 0.00 to 0.01], P=0.03), although not clinical relevant. However, no significant difference was found in the incidence of other maternal adverse effects and fetal outcomes.
Conclusions: Comparable efficacy for management of postspinal hypotension, though, norepinephrine was found to cause less incidence of maternal bradycardia as compared to phenylephrine.
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| http://dx.doi.org/10.23736/S0375-9393.22.16654-X | DOI Listing |
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