Fentanyl oxygen anaesthesia for abdominal aortic surgery

Area of Science:

• Anesthesiology
• Cardiovascular Surgery
• Pharmacology

Background:

• Abdominal aortic surgery patients often have concurrent coronary artery disease.
• Fentanyl is commonly used for anesthesia in these procedures.
• Maintaining hemodynamic stability is crucial during major vascular surgery.

Purpose of the Study:

• To evaluate hemodynamic responses during fentanyl-oxygen anesthesia in abdominal aortic surgery.
• To assess the efficacy of a high-dose fentanyl regimen (100 mcg/kg) in controlling circulatory dynamics.
• To identify the incidence of perioperative hypertension, myocardial ischemia, and need for interventions.

Main Methods:

• 16 patients undergoing abdominal aortic surgery received fentanyl (100 mcg/kg) for anesthesia induction.
• Hemodynamic parameters were monitored throughout the procedure.
• Interventions for hyperdynamic responses, hypertension, and ischemia were recorded.

Main Results:

• 13 out of 16 patients exhibited hyperdynamic circulatory responses requiring treatment before aortic cross-clamping.
• 11 patients needed treatment for postoperative hypertension.
• 5 patients developed myocardial ischemia (ST depression > 0.1 mV).

Conclusions:

• Unsupplemented high-dose fentanyl anesthesia (100 mcg/kg) is insufficient to maintain a hypodynamic state in patients undergoing abdominal aortic surgery.
• Significant interventions are often required to manage hemodynamic instability and prevent ischemic events.
• Alternative anesthetic strategies or adjuncts may be necessary for optimal patient management.