Anesthesia Knowledge Test-6 (AKT-6) Practice 2025 – The Comprehensive Resource to Master Your Exam!

The primary advantage of closed circuit anesthesia lies in its ability to allow for lower cost and increased humidification. In a closed circuit, the exhaled gases are recirculated, which means that not only is the anesthetic agent conserved, resulting in reduced costs, but also the moisture content of the gases can be maintained better. This is particularly important for patient comfort and helps prevent airway irritation that can occur with dry gases.

Additionally, recirculation allows for efficient use of inhaled anesthetics, reduces waste, and minimizes environmental impact. The closed system helps maintain a stable concentration of anesthetic agents, and because it retains heat and humidity, patients experience less respiratory discomfort and complications related to dry airways.

In contrast, higher control of agent levels corresponds more to open systems, where fresh gas flow is adjusted to manipulate inhaled concentrations effectively. Unlimited oxygen supply is typically not a characteristic of closed systems, and while monitoring requirements may vary, a closed system does not inherently reduce the need for monitoring.