1. Health assessment and analysis of dyspnea cases.

It is difficult to breathe out because the expiration time is prolonged and it is difficult to exhale.

Set your own sports formula

Cleaning the respiratory tract is ineffective.

Gas exchange damage

Activity intolerance

Lack of knowledge

The reason is contact with the puppy.

Prevention: avoid contact with allergens, such as animals with fur, go to crowded places and wear masks when going out.