Hemodynamic Changes following Anesthesia Induction and LMA Insertion with Propofol, Etomidate, and Propofol +...

Area of Science:

• Anesthesiology
• Airway Management
• Pharmacology

Background:

• The Laryngeal Mask Airway (LMA) is a common supraglottic device for airway management.
• Optimal anesthesia induction methods for ensuring proper LMA insertion and hemodynamic stability are lacking.

Purpose of the Study:

• To compare the hemodynamic stability following LMA insertion using three anesthesia induction methods: propofol, etomidate, and a combination of propofol and etomidate.
• To evaluate the impact of these induction methods on LMA insertion success and apnea duration.

Main Methods:

• Ninety ASA I-II patients undergoing elective surgery were randomized into three groups: Propofol (P), Etomidate (E), or Propofol+Etomidate (P+E).
• Hemodynamic parameters (HR, SBP, DBP, MAP) were measured before and after induction.
• Apnea time, number of LMA insertion attempts, and ease of placement were recorded.

Main Results:

• The Propofol+Etomidate group demonstrated significantly better hemodynamic stability compared to the Propofol-only group.
• Etomidate alone resulted in a significantly shorter apnea duration (8.67 min) compared to Propofol (18.10 min) and Propofol+Etomidate (12.03 min).
• The combination group showed a significant advantage in the number of attempts and ease of LMA insertion.

Conclusions:

• The combination of etomidate and propofol is an effective alternative for LMA insertion.
• This combination provides the advantage of minimal cardiovascular depression, enhancing patient stability during airway management.