What is the Single Breath-Hold Technique also known as in the context of DLCO testing?

The Single Breath-Hold Technique is referred to as the Modified Krogh Technique in the context of DLCO (Diffusing Capacity of the Lung for Carbon Monoxide) testing. This method involves the patient taking a single deep breath of a test gas, typically a mixture containing carbon monoxide, and holding their breath for a brief period before exhaling.

The technique is based on the principles established by August Krogh, who studied gas exchange in the lungs. The modification allows for a more direct assessment of the lung's diffusing capacity by measuring how much carbon monoxide can pass from the alveoli into the bloodstream over the time the patient holds their breath. This breath-hold period is crucial for allowing the gas to equilibrate between the alveoli and the pulmonary capillaries, providing a clear indication of how efficiently gas exchange occurs.

Understanding this technique is essential for interpreting DLCO results accurately, which are crucial for diagnosing and managing various pulmonary conditions. The other options do not accurately describe the Single Breath-Hold Technique within the context of DLCO testing.