What are the indications and contraindications of Caden breathing trainer?

Indications of Camden Breathing Trainer include: acute and chronic bronchitis, bronchial asthma and cardiovascular disease (hypertension or hypotension), chronic obstructive pulmonary disease and smokers. It can also be use for that rehabilitation of complicated pneumonia, tuberculosis, heart disease, apoplexy and medical operation. Contraindications of Camden respiratory trainer: acute and infectious diseases, acute attack period of chronic diseases, decompensation period (decompensation period refers to that some functions of human body are abnormal and other functions can be compensated, and decompensation period refers to that human body function has been seriously damaged, which exceeds human capacity), type II respiratory failure, type II cardiovascular insufficiency, bronchial hemorrhage and bloody expectoration are in contradiction with the equipment used by patients with implanted pacemakers. The equipment used also warns physiotherapy patients of taboos.