Why is it critical to minimize interruptions during CPR?

Minimizing interruptions during CPR is essential primarily to maximize blood flow to the brain and heart. During cardiac arrest, the heart is unable to pump blood effectively, and chest compressions are crucial for maintaining blood circulation. Every second spent without effective compressions significantly diminishes the chances of survival and can lead to irreversible brain damage due to lack of oxygen. Therefore, continuous, high-quality chest compressions help ensure that oxygenated blood continues to circulate to vital organs, specifically the brain and heart, which are most sensitive to hypoxia.

Maintaining an efficient rhythm in CPR, with minimal pauses, is vital because each interruption can severely impact the overall outcome for the patient. The goal is always to maintain as much perfusion (blood flow) as possible until more advanced medical interventions can be applied.