CPR VOLUME EXCHANGER VALVE SYSTEM WITH SAFETY FEATURE AND METHODS

摘要

A method for regulating gas flows into and out of a patient includes repetitively forcing respiratory gases out of the lungs. Respiratory gases are prevented from entering back into the lungs during a time between when respiratory gases are forced out of the lungs. Periodically, an oxygen-containing gas is supplied to the lungs.

主权项

1. A method to perform cardiopulmonary resuscitation in a patient in cardiac arrest, the method comprising:
repetitively compressing the chest and permitting the chest to recoil a rate of about 60 to about 120 times/min; wherein with each compression a volume of respiratory gas is expelled from the lungs; wherein for a plurality of chest recoils, preventing respiratory gases from returning to the lungs such that over successive chest compression/chest recoil cycles there is a successive decrease in respiratory gases within the lungs thereby allowing more blood to enter the thoracic space; and periodically actively expanding the lungs with an oxygen-containing gas.