User's Manual

1.6.1 Absolute contraindications

1) Suffered from myocardial infarction, stroke, and shock in the past 3 months;

2) Severe cardiac insufficiency, severe arrhythmia, and unstable angina in the past 4

weeks;

3) Large hemoptysis in the past 4 weeks;

4) Seizures need treatment;

5) Uncontrolled hypertension (systolic blood pressure > 200mmHg, diastolic blood

pressure > 100mmHg);

6) Aortic aneurysm;

7) Severe hyperthyroidism.

1.6.2 Relative contraindications

1) Resting heart rate >120 beats /min;

2) Pneumothorax, giant bullae, and those who are not prepared for surgical treatment;

3) Pregnant women;

4) Tympanic membrane perforation (need to be measured after the affected ear canal is

blocked);

5) Respiratory tract infection in the past 4 weeks;

6) People with low immunity and susceptible to infection;

7) Infectious diseases of the respiratory tract (such as tuberculosis, influenza, etc.);

8) Children with critical illnesses and children with blood oxygen saturation lower than

92% require oxygen therapy.

The contraindications for the operation and use of the equipment include but are not limited

to the above symptoms.

1.7 Product list

Name

Quantity

Pulmonary Function Tester

×1

USB cable

×1

User manual

×1

Quality certificate

×1