During cardiopulmonary resuscitation (CPR), providing breaths is crucial for oxygenating the blood. However, delivering too much air, or breaths that are too forceful, can lead to a number of negative consequences. This over-inflation of the lungs can disrupt the delicate balance of intrathoracic pressure, potentially hindering effective circulation and decreasing the chances of successful resuscitation. For example, if breaths are delivered too rapidly or with excessive force, the increased pressure within the chest cavity can impede venous return to the heart.
The potential for compromised blood flow during resuscitation is a serious concern. Adequate blood circulation is vital for delivering oxygen to the brain and other vital organs. Impaired venous return reduces cardiac output, decreasing the effectiveness of chest compressions. Historically, resuscitation guidelines emphasized the importance of ventilation, but research has demonstrated the potential harm of excessive breaths, leading to revisions that prioritize chest compressions and advocate for a more conservative approach to ventilation.
