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[Vascular effects of nicergoline]
J J Lehot1, M George, O Bastien
1Hôpital Cardiovasculaire et Pneumologique Louis-Pradel, BP Lyon-Montchat.
Annales Francaises D'Anesthesie Et De Reanimation
|January 1, 1988
Summary
Nicergoline, an alpha-blocker, was investigated for its vascular effects during cardiopulmonary bypass. The study found nicergoline may cause venoconstriction, potentially via a baroreflex mechanism, impacting vascular resistance and capacitance.
Area of Science:
- Cardiovascular Pharmacology
- Anesthesiology
- Surgical Research
Background:
- Cardiopulmonary bypass (CPB) is a critical procedure in cardiac surgery.
- Understanding the vascular effects of drugs during CPB is essential for patient safety.
- Nicergoline is an alpha-adrenergic antagonist with known vasodilatory properties.
Purpose of the Study:
- To evaluate the vascular effects of nicergoline during normothermic cardiopulmonary bypass.
- To assess nicergoline's impact on arteriolar resistance and venous capacitance.
- To investigate potential mechanisms underlying nicergoline's vascular actions during CPB.
Main Methods:
- A randomized study involving 20 patients undergoing cardiac surgery with CPB.
- Patients received either saline (control) or nicergoline (5 mg) via the extracorporeal circuit.
- Arteriolar resistance and venous capacitance were measured using mean arterial pressure and venous reservoir levels, respectively.
Main Results:
- Nicergoline significantly decreased arteriolar resistance within 2 minutes (p<0.05) and maintained a lower resistance compared to the control group at 10 minutes.
- Venous capacitance showed a smaller decrease in the nicergoline group compared to the saline group at 10 minutes (p<0.05).
- These findings suggest nicergoline influences vascular tone during CPB.
Conclusions:
- Nicergoline appears to induce venoconstriction during cardiopulmonary bypass.
- The observed effects may be mediated through a baroreflex mechanism.
- Further research is warranted to elucidate the precise role of nicergoline in CPB-associated hemodynamics.