What does the rhythm strip in an ECG provide?

The rhythm strip in an ECG provides continuous monitoring of the heart's electrical activity over time. This aspect is crucial as it allows healthcare providers to analyze the heart's rhythm, detect any abnormalities, and assess the overall cardiac function. The rhythm strip captures real-time data as the electrical impulses travel through the heart, which helps in identifying arrhythmias, conduction delays, and other significant cardiac events.

This continuous tracing is vital for making informed decisions about patient care, particularly in critical situations where heart function needs to be assessed frequently. By monitoring the continuous rhythm, clinicians can observe variations and patterns that might indicate underlying issues, rather than just providing snapshots or isolated readings that lack context. Thus, option B accurately describes the primary role of the rhythm strip in an ECG.