Key result
Prophylactic bolus doses of phenylephrine, ephedrine, and mephentermine were equally effective in maintaining maternal arterial pressure, though phenylephrine caused more bradycardia.
Why the study?
Hypotension after spinal anesthesia for cesarean delivery is common and can be treated with multiple agents, but the comparative efficacy and side effect profiles of phenylephrine, ephedrine, and mephentermine required evaluation.
Do prophylactic bolus doses of phenylephrine, ephedrine, or mephentermine differ in maintaining arterial pressure during spinal anesthesia for cesarean section?
RCT (n=120)
Randomly allocated
Do prophylactic bolus doses of phenylephrine, ephedrine, or mephentermine differ in maintaining arterial pressure during spinal anesthesia for cesarean section?
Phenylephrine, ephedrine, and mephentermine are equally effective for maintaining arterial pressure during spinal anesthesia for cesarean section, though phenylephrine is associated with more bradycardia.
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Offers flexibility in vasopressor selection for cesarean spinal anesthesia; confirms comparable efficacy with differing bradycardia risks.
Chandak et al. (2021) conducted an RCT in Hypotension during spinal anesthesia for cesarean section (n=120). Phenylephrine vs. Ephedrine (10 mg IV) and Mephentermine (6 mg IV) was evaluated on Efficacy of the vasopressor in treating hypotension and incidence of undesirable side effects. Prophylactic bolus doses of phenylephrine, ephedrine, and mephentermine were equally effective in maintaining maternal arterial pressure, though phenylephrine caused more bradycardia.
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