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[Baroreflex activity in carotid endarterectomy during general anesthesia]
G Godet1, J M Bernard, M Bertrand
1Département d'Anesthésie-Réanimation, Hôpital de la Pitié-Salpêtrière, Paris.
Annales Francaises D'Anesthesie Et De Reanimation
|January 1, 1989
Summary
Baroreflex sensitivity was low during general anesthesia for carotid endarterectomy. Carotid clamping significantly increased systolic blood pressure but did not affect heart rate or blood gases, indicating impaired baroreceptor reflex function.
Area of Science:
- Cardiovascular physiology
- Anesthesiology
- Surgical monitoring
Context:
- Carotid endarterectomy requires general anesthesia, potentially impacting cardiovascular reflexes.
- The baroreceptor reflex is crucial for maintaining blood pressure stability during surgical procedures.
Purpose:
- To investigate baroreflex sensitivity in patients undergoing carotid endarterectomy under general anesthesia.
- To assess the effects of carotid clamping and halothane administration on baroreflex function.
Summary:
- Baroreflex sensitivity was assessed in 11 patients using Smyth's method during carotid endarterectomy.
- General anesthesia and carotid clamping resulted in low baroreflex sensitivity and a significant increase in systolic blood pressure.
- Halothane administration further reduced heart rate but did not significantly alter baroreflex sensitivity.
Impact:
- Findings highlight the compromised baroreceptor reflex during this procedure, necessitating careful hemodynamic management.
- Results provide insights into the physiological responses to anesthesia and surgical manipulation in this patient population.