Auscultation and asthma: what a chest examination can show

During auscultation, a clinician uses a stethoscope at several points on the chest and back while you breathe. They compare both sides, listen to the length and quality of each breath, and note any added sounds.

Asthma commonly presents with wheezing, especially when breathing out, because narrowed airways can make airflow noisy. A cough or chest tightness may occur even when wheezing is absent. Breath sounds can also be normal between episodes or after reliever medicine.

Very quiet breath sounds in someone who is struggling to breathe can signal severely reduced airflow. Crackling, sounds concentrated in one area, fever, or an uneven examination may suggest that another problem also needs consideration. The findings are interpreted alongside symptoms, triggers, oxygen level and, when suitable, breathing tests.

Tell the clinician when symptoms occur, whether exercise, dust, smoke, weather or infection triggers them, and what happens after using an inhaler. Bring your inhalers and spacer so technique and medication use can be checked. Mention recent reliever use because it may change what is heard.

Auscultation is one part of assessment. Depending on your age and circumstances, the clinician may arrange airflow measurements before and after a bronchodilator, home peak-flow readings, or other tests. Continue prescribed preventer treatment unless your clinician has advised a change.

Seek urgent medical help for severe breathlessness, difficulty speaking in full sentences, blue or grey lips, confusion, exhaustion, marked chest pulling with each breath, or symptoms that are rapidly worsening. Follow your written asthma action plan and use prescribed reliever medicine as directed while arranging help.

Book a clinical review if wheeze, cough, night waking, chest tightness or reliever use is increasing. A normal chest examination at one appointment should not delay review of recurring symptoms.

Ask what the breath sounds suggest, whether objective breathing tests are appropriate, how to check inhaler technique, and which changes should trigger your action plan. You can also ask whether nasal allergy, workplace exposure or another cause of cough may be contributing.