MEDICINE
CARDIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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100
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75
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125
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40
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Detailed explanation-1: -The normal R-R interval is between 0.6 seconds to 1 second, and correlates to an average resting heart rate of 60-100 bpm.
Detailed explanation-2: -One quick and easy way to measure the ventricular rate is to examine the RR interval-that is, the distance between two consecutive R waves-and use a standard scale to find the rate. If two consecutive R waves are separated by only one large box, then the rate is 300 beats per minute.
Detailed explanation-3: -For a normal sinus rhythm the R-R interval must be between 0.6s-1.2s. As seen earlier the ECG signal of PVC (Premature Ventricular Contraction) is characterized by wide PVC affected QRS proceeded and proceeded by normal QRS complex. Because of this the R-R interval is increased then usual.