Final answer:
During CPR, the maximum interval for interrupting chest compressions is 10 seconds to ensure continuous blood flow and minimize the risk of brain damage.
Step-by-step explanation:
The maximum interval you should allow for an interruption in chest compressions during CPR is 10 seconds. Continuing chest compressions is critical because the heart of a patient has stopped, and CPR is needed to maintain blood flow, especially to vital organs like the brain. Irreversible damage to neurons can occur within minutes of loss of blood flow, so interruptions should be minimized to maintain circulation.