Overview
Low-flow anesthesia (LFA) is a technique in which at least 50% of the exhaled air, after carbon dioxide absorption, is mixed with a certain amount of fresh gas and returned to the patient during the next inspiration. In 1974, R. Virtue defined minimal flow anesthesia (MFA) as 0.5 L/min. In 1984, Baker and Simionescu classified LFA as 0.5-1 L/min and MFA as 0.25-0.5 L/min. The aim of this study is to investigate whether there are hemodynamic differences between open-heart surgery cases performed with LFA at different fresh gas flow rates.
Eligibility
Inclusion Criteria:
-≥18 years and scheduled for open-heart surgery patients
-ASA I-II-III-IV physical class
Exclusion Criteria:
- Emergency cases
- Patients under 18 years of age
- Patients who have had open heart surgery before
- Patients for whom the use of inhaled anesthetic agents is contraindicated
- Patients who do not sign a voluntary consent form
