The ECG reveals a ______ pattern, with each P wave followed by progressively longer PR intervals until a QRS complex is dropped.
1Wenckebach✓ 정답
2Mobitz
3sequential
4progressive
5gradual
해설
The Wenckebach pattern (Mobitz type I AV block) shows progressive lengthening of the PR interval until a QRS complex is dropped. This occurs due to gradually increasing conduction delay in the AV node, resulting in a missed ventricular beat.
3. Clinical Features:
- Usually benign condition
- Common in young, healthy individuals
- Often asymptomatic
- May occur during sleep/increased vagal tone
4. Conduction Abnormalities:
- AV node dysfunction
- Progressive conduction delay
- Intermittent block
- Normal QRS morphology
5. Treatment Considerations:
- Often requires no treatment
- Monitor for progression
- Reversible causes assessment
- Medication adjustment if symptomatic
핵심 개념
Wenckebach — A specific type of heart block (Mobitz type I) characterized by progressive lengthening of PR intervals until a QRS complex is dropped
Mobitz — A classification system for atrioventricular blocks, describing specific patterns of cardiac conduction abnormalities
sequential — Following a regular or predictable order or pattern, occurring in succession
progressive — Advancing or developing gradually in stages, showing continuous increase or development
gradual — Taking place or progressing slowly by degrees, occurring in a step-by-step manner