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How many heart beat one can observe in a single sweep period?(a) 1(b) 2(c) 3(d) 4The question was posed to me in an interview for job.The question is from Arrhythmias Monitor in section Arrhythmia and Ambulatory Monitoring Instruments of Biomedical Instrumentation

Answer»

The correct option is (d) 4

Best explanation: WITHOUT a long persistence screen, one can only see a moving dot of light instead of a CONTINUOUS trace. Typically for a 13-cm screen, total SWEEP TIME is usually kept as 2.5 or 5 s. In this way, one can OBSERVE at least four heart beats in a single sweep period.



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