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Diseases of the circulatory system
문제
The patient's ECG shows a ______ complex, where the QRS duration is more than 120 milliseconds with a distinctive M-shaped pattern.
1
fragmented
✓ 정답
2
widened
3
normal
4
narrow
5
split
해설
A fragmented QRS complex with duration >120ms and M-shaped pattern is often seen in bundle branch blocks or ventricular conduction delays. This fragmentation represents disturbed ventricular activation due to scarring or conduction system disease.
같은 주제 다음 문제 The patient's EKG shows significant ST ______ in leads V2 through V4, suggesting acute ant… 임상 시나리오 ECG QRS Complex Characteristics:
핵심 개념
fragmented — broken or split into multiple parts, indicating disrupted electrical conduction in cardiac tissuewidened — increased in width or duration, typically referring to extended QRS complex durationnormal — within typical or standard parameters for ECG measurements and patternsnarrow — having reduced width or duration, typically referring to QRS complex less than 120mssplit — divided or separated into distinct components in ECG waveform pattern
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