What should you know about rms spirometer?

During spirometry, you breathe into a mouthpiece while a clinician records airflow. You usually take a deep breath, seal your lips around the mouthpiece, and exhale with a strong, sustained effort. The result can help show whether air is moving through the lungs as expected, and whether narrowing may be affecting breathing. It is a measurement, not a diagnosis by itself.

Wear comfortable clothing and follow the testing service's instructions about meals, smoking, exercise, and inhalers. Tell the clinician about chest discomfort, recent illness, dizziness, or medicines you use. During the test, follow the breathing instructions closely; a good seal and a full effort make the reading more useful. The test may be repeated so the clinician can check that the results are consistent.

Arrange medical advice for new or worsening breathlessness, wheezing, a persistent cough, or reduced exercise tolerance. Seek urgent help for severe difficulty breathing, blue or grey lips, fainting, confusion, or chest pain that is severe or does not settle. If symptoms become uncomfortable during testing, stop and tell the clinician immediately.

Ask what each measured value represents, whether the test quality was adequate, and whether you should change any inhaler before a repeat assessment. You can also ask what symptoms should prompt earlier review and whether other breathing tests are needed.