When will be R-R interval declared premature?(a) If it is greater than 85% of the predicted interval(b) If it is less than 85% of the predicted interval(c) If it is greater than 75% of the predicted interval(d) If it is less than 75% of the predicted intervalThe question was asked in final exam.Query is from Phonocardiography (PCG) topic in division Biomedical Recorders of Biomedical Instrumentation

When will be R-R interval declared premature?(a) If it is greater than

1.	When will be R-R interval declared premature?(a) If it is greater than 85% of the predicted interval(b) If it is less than 85% of the predicted interval(c) If it is greater than 75% of the predicted interval(d) If it is less than 75% of the predicted intervalThe question was asked in final exam.Query is from Phonocardiography (PCG) topic in division Biomedical Recorders of Biomedical Instrumentation
Answer» Right OPTION is (b) If it is LESS than 85% of the predicted interval Explanation: In timing classification, the observed R-R interval is compared to an estimate of the expected R-R interval. An R-R interval will be declared PREMATURE if it is less than 85% of the predicted interval. Similarly, an R-R interval is long if it is greater than 110% of the predicted VALUE.

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