Home > News > Content

What Do I Need To Pay Attention To Using Pneumatometer?

Before using the Pneumatometer, first understand the theoretical knowledge of lung capacity.

Lung capacity is the total amount of gas that you try to exhale after trying to inhale. Pneumatometer = Tidal Volume + inspiratory amount + expiratory volume, tidal volume refers to the amount of gas inhaled or exhaled at each breath. Lung capacity is the maximal amount of ventilation in a breath, which can reflect the latent ability of respiratory function in a certain sense. Inspiratory capacity is also called Inspiratory Reserve quantity, refers to the calm inhale the end, and then try to inhale the amount of gas can be inhaled.

Generally speaking, the better the health condition, the larger the lung capacity. According to age, the lung capacity of the mature people is the largest, young and old are smaller. The lungs of people who do much exercise are relatively large. Taking part in physical exercise can improve lung capacity.

The adult male lung capacity is about 3500 ml, and the woman is about 2500 ml. The Pneumatometer of the prime is the largest, the young and the old. The better the health, the greater the Pneumatometer, lung damage, such as pulmonary tuberculosis, pulmonary fibrosis, atelectasis or lobectomy, may decrease the vital capacity; kyphosis, thickening of the pleura, exudative pleurisy or pneumothorax, and so on, can also be limited to lung expansion, lung capacity reduced. Therefore, the significant reduction of vital capacity is the manifestation of restrictive ventilation disorder.

Determination of Pneumatometer due to the speed of the expiratory, but not the respiratory ventilation is not good, therefore, the use of time lung capacity determination, as a dynamic index of lung function is more ideal. The capacity of the time is the largest inspiratory after the maximum speed of the breath, until the end of the call. At the same time, we recorded the gas volume at the end of the 1th, 2 and 3 seconds respectively, and the cardiopulmonary resuscitation model of cardiopulmonary resuscitation was studied.

Normal persons should exhale 83%, 96% and 99% of their Pneumatometer respectively. Patients with lung obstructive pulmonary disease often need 5-6 seconds or more to exhale all lung capacity, respiratory movement limited in a number of pathological conditions, the first 1 seconds of time to increase lung capacity, and can be early to call the full lung capacity. Therefore, the time lung capacity can be used as an indicator to identify obstructive or restrictive ventilation disorders.

Measurement of Pneumatometer

The lung capacity before use disinfection, inserted Pneumatometer measurement. After the measurement instrument sends out the first measurement instruction, inhale deeply, then try to blow the air, can measure the Pneumatometer level. When the measuring instrument emits a second measurement instruction, inhale again and try to blow the gas. The instrument automatically takes the maximum value as the measured value into the handheld terminal.


(1) When blowing air, the airflow can not be interrupted, once interrupted, the instrument will automatically be recorded as a measurement of the end.

(2) When blowing air, do not make the gas blowing through the mouth and the face between the gap overflow, but the mouth to close the face, otherwise affect the measurement results.

(3) After the measurement is finished, the blow nozzle should be disinfected centrally.

Tongfang Health Technology (Beijing) Co.,Ltd