What is diaphragmatic excursion test?

Diaphragmatic excursion test is a non-invasive diagnostic procedure used to evaluate the functioning of the diaphragm muscles. It involves measuring the extent of diaphragmatic movement during deep inhalation and exhalation. The test is typically performed by a physician or a respiratory therapist.

During the test, the patient is instructed to take a deep breath and hold it while the physician or therapist places a stethoscope on the lower part of their ribs, just above the abdomen. The healthcare professional then gently presses on the stomach area to create resistance when the patient tries to exhale. This pressure helps to determine the extent to which the diaphragm muscles move upward while breathing out.

The test is useful in diagnosing conditions that affect the diaphragm, such as neuromuscular diseases, traumatic injuries, chronic obstructive pulmonary disease (COPD), or restrictive pulmonary disorders. A normal diaphragmatic excursion distance is about 3–7 cm for men and women. However, the range may vary depending on factors such as age, height, gender, and underlying medical conditions.

Overall, diaphragmatic excursion test is a simple and quick procedure that can provide important information about respiratory muscle function and help healthcare professionals diagnose and manage various respiratory conditions.