Low Flow Anesthesia Without Initial High Flow Phase

Comparison of Low Flow Anesthesia With and Without Initial High Flow Phase

The aim of the study is to compare the effectiveness of conventional low flow anesthesia (LFA) with initial high fresh gas flow ( 4L/min) for 10 minutes and LFA with fixed fresh gas flow rate (1L/min).

Inclusion Criteria:

• ASA 1-3
• scheduled for surgery under general anesthesia with endotracheal intubation

Exclusion Criteria:

• hemodynamic instability
• emergency cases
• expected anesthesia duration < 60 min
• patient refusal