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2. Diaphragmatic excursion - Wikipedia

   en.wikipedia.org/wiki/Diaphragmatic_excursion

   Diaphragmatic excursion is the movement of the thoracic diaphragm during breathing. Normal diaphragmatic excursion should be 3–5 cm, but can be increased in well-conditioned persons to 7–8 cm. This measures the contraction of the diaphragm. It is performed by asking the patient to exhale and hold it.

3. Hoover's sign (pulmonary) - Wikipedia

   en.wikipedia.org/wiki/Hoover's_sign_(pulmonary)

   Hoover's sign in pulmonology is one of two signs named for Charles Franklin Hoover. [1]It refers to inward movement of the lower rib cage during inspiration, [2] - instead of outward as is normal - implying a flat, but functioning, diaphragm, often associated with COPD. [3]

4. Respiratory examination - Wikipedia

   en.wikipedia.org/wiki/Respiratory_examination

   After positioning in which the patient sits upright with their arms at the side, with the chest clear of clothing, the four stages of the examination can be carried out. In order to listen to the lungs from the back the patient is asked to move their arms forward to prevent the scapulae (shoulder blades) from obstructing the upper lung fields.

5. Dahl's sign - Wikipedia

   en.wikipedia.org/wiki/Dahl's_sign

   Air trapping in the lungs of COPD patients causes the diaphragm to be pushed down and flattened, which reduces the effect of contraction of the diaphragm during inspiration. Sitting forwards pushes the abdominal contents upwards, increasing the curvature of the diaphragm and improving its effectiveness. [5]

6. Pursed-lip breathing - Wikipedia

   en.wikipedia.org/wiki/Pursed-lip_breathing

   Physicians, nurses, physical therapists, occupational therapists, and respiratory therapists teach this technique to their patients to ease shortness of breath and to promote deep breathing, also referred to as abdominal or diaphragmatic breathing. The purpose of PLB is to create back-pressure inside airways to splint them open; moving air thus ...

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