While there are no absolute contraindications for spirometry use, inspiratory muscle training can worsen some existing medical conditions, including the following: *Recent or current respiratory tract infection *Hemoptysis of unknown origin *Pneumothorax *Emphysema, due to increased barotrauma *Thoracic, abdominal, or cerebral aneurysms *Recent thoracic, abdominal, or eye surgery *Nausea, vomiting, or acute illness *Confusion or dementia *Undiagnosed hypertension
Incentive spirometer
Asthma spacer
Analytical nebulizer
Air displacement plethysmography
Spirometer
Air purifier
Structured light plethysmography
Post bronchodilator test