Ventilator-indications For Use

The physiological effects of mechanical ventilation, namely (1) improving ventilation, (2) improving ventilation, and (3) reducing respiratory power consumption determine that mechanical ventilation can be used to improve the following pathophysiological conditions.


Ventilation pump failure: reduced impulse release and conduction disturbances in the respiratory center; mechanical dysfunction of the thoracic cage; respiratory muscle fatigue.


Ventilation dysfunction: decreased functional residual volume; imbalance of V / Q ratio; increased pulmonary blood shunt; diffusion disorder.


Need to strengthen the airway manager: keep the airway open to prevent suffocation; when using certain medicines with respiratory depression. To determine whether to perform mechanical ventilation, refer to the following conditions:


Those whose general treatment methods for respiratory failure are ineffective;


Breathing frequency is greater than 35-40 times / min or less than 6-8 times / min;


Abnormal breathing rhythm or weak or disappear spontaneous breathing;


Respiratory failure is accompanied by severe unconsciousness;


Severe pulmonary edema;


PaO2 is less than 50mmHg, especially after oxygen absorption is still less than 50mmHg;


PaCO2 increased progressively and pH decreased dynamically.