Conventional CCU monitoring relying on human observation frequently misses clinically significant transient arrhythmias that occur less than once per minute.
May prompt automated detection in CCUs to catch infrequent arrhythmias; leaves open impact on outcomes.
Conventional electrocardiographic monitoring techniques depend on human observation of an oscilloscopic display for detection of transient rhythm disturbances such as premature ventricular contractions (PVCs). It is not surprising that such events are often missed. We have found that transient events are regularly identified only when they occur with a frequency exceeding one per minute. Rhythm disturbances such as coupled PVCs or PVCs in which R waves interrupt the preceding T wave ("R on T"), which constitute indications for antiarrhythmic therapy, may go undetected if they occur less frequently than this.
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Joseph Lindsay (1975) studied this question.
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