Enflurane for controlled hypotension.

Area of Science:

• Anesthesiology
• Surgical Procedures

Background:

• Controlled hypotension is a technique used to reduce blood loss during surgery.
• Halothane has been a traditional anesthetic agent for this procedure.
• Evaluating alternative anesthetic agents is crucial for optimizing surgical conditions.

Purpose of the Study:

• To assess the efficacy and safety of enflurane as a substitute for halothane in controlled hypotension.
• To evaluate the use of enflurane in combination with beta-blockade and sympathetic ganglion blockade.
• To compare outcomes in patients undergoing different types of major surgery.

Main Methods:

• Enflurane was used instead of halothane in a controlled hypotension protocol.
• The protocol included beta-blockade and sympathetic ganglion blockade.
• Two patient groups were studied: major plastic/maxillo-facial surgery (spontaneous breathing) and major neurosurgery (intermittent positive pressure ventilation).
• Patients were monitored during anesthesia and for 24 hours postoperatively.

Main Results:

• Enflurane facilitated controlled hypotension effectively in both patient groups.
• Good operating conditions were achieved during the surgical procedures.
• No adverse effects attributable to controlled hypotension were observed in any patient.

Conclusions:

• Enflurane is a safe and effective alternative to halothane for controlled hypotension in major plastic, maxillo-facial, and neurosurgery.
• The technique, utilizing beta-blockade and ganglion blockade, is well-tolerated.
• This anesthetic approach provides optimal surgical field conditions without compromising patient safety.