hidrogénkilégzési

Hidrogénkilégzési refers to the measurement of hydrogen gas in a person's exhaled breath. This non-invasive diagnostic test is primarily used to assess the absorption and metabolism of certain carbohydrates in the digestive system. When specific carbohydrates are not fully absorbed in the small intestine, they pass into the large intestine where they are fermented by bacteria. This fermentation process produces gases, including hydrogen, which are then absorbed into the bloodstream and eventually exhaled.

The hidrogénkilégzési test typically involves consuming a specific carbohydrate solution, such as lactose or fructose. Breath samples are collected at regular intervals before and after consumption. An increase in exhaled hydrogen levels above a baseline indicates malabsorption of that particular carbohydrate. For example, a positive lactose hidrogénkilégzési test suggests lactose intolerance.

This diagnostic method is also employed to detect small intestinal bacterial overgrowth (SIBO). In SIBO, there is an abnormal increase in bacteria in the small intestine. These bacteria ferment carbohydrates prematurely, leading to elevated hydrogen levels in the breath, even in the upper part of the small intestine. The test is generally considered safe and well-tolerated, with minimal preparation required. It provides valuable information for diagnosing and managing various gastrointestinal conditions.