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Maternal hypotension during spinal anesthesia for caesarean delivery
F J Mercier1, M Augè, C Hoffmann
1Département d'Anesthésie-Réanimation, Hôpital Antoine-Béclère, AP-HP & Université Paris-Sud, Clamart, France. frederic.mercier@abc.aphp.fr
Minerva Anestesiologica
|November 9, 2012
Summary
Maternal hypotension during cesarean delivery with spinal anesthesia is common without prophylaxis. Combining vasopressors with fluid loading, particularly hydroxyethylstarch, is the most effective prevention strategy.
Area of Science:
- Anesthesiology
- Obstetrics
- Pharmacology
Background:
- Maternal hypotension is frequent during cesarean delivery under spinal anesthesia, occurring in 70-80% of cases without pharmacological prophylaxis.
- While physical methods can help, pharmacological interventions are key for prevention.
Purpose of the Study:
- To review strategies for preventing maternal hypotension during cesarean delivery with spinal anesthesia.
- To evaluate the efficacy of different pharmacological and fluid loading methods.
Main Methods:
- Review of existing literature on maternal hypotension during spinal anesthesia for cesarean delivery.
- Analysis of pharmacological prophylaxis, including vasopressor therapy and fluid loading strategies (preloading vs. coloading).
Main Results:
- Crystalloid preloading is ineffective; crystalloid coloading is better but volume and speed dependent.
- Hydroxyethylstarch preloading or coloading is consistently effective in reducing hypotension incidence and severity.
- Phenylephrine is now preferred over ephedrine as a first-line vasopressor for elective procedures.
Conclusions:
- Combining prophylactic vasopressors with hydroxyethylstarch preloading/coloading or crystalloid coloading is the optimal approach.
- Future research may focus on tailored prophylaxis using predictive tests and new monitoring devices.
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