The ECG shows characteristic ______ waves in the inferior leads, suggesting digitalis effect on the heart.

1 sagging ✓ 정답
2 inverted
3 peaked
4 notched
5 scooped

해설

Sagging ST segments (reverse checkmark sign) in inferior leads are a classic ECG finding of digitalis effect. This characteristic downsloping ST depression reflects the drug's effect on cardiac repolarization.

같은 주제 다음 문제The patient's EKG shows significant ST ______ in leads V2 through V4, suggesting acute ant…

임상 시나리오

ECG Digitalis Effect:
- Sagging ST segments = "reverse checkmark" or "scooped" appearance
- Most prominent in leads II, III, aVF (inferior leads)
- ST depression with downward sloping
- Associated with therapeutic digoxin levels
- Caused by altered ventricular repolarization
- Other digitalis effects:
* Shortened QT interval
* T wave flattening/inversion
* PR interval prolongation
* Premature ventricular contractions
- Must differentiate from:
* Ischemic ST depression
* Electrolyte abnormalities
* Other drug effects
- Clinical monitoring:
* Serum digoxin levels
* Electrolytes (K+, Mg2+, Ca2+)
* Regular ECG assessment
* Signs of toxicity

핵심 개념

sagging — Drooping or hanging downward, typically describing a downward curve or depression in ECG waves
inverted — Turned upside down or reversed in direction, referring to waves that point downward instead of upward
peaked — Having a pointed or sharp summit, describing waves with elevated, pointed tops
notched — Having a small indentation or cut in the waveform, creating a V-shaped depression
scooped — Having a concave or bowl-like depression in the waveform pattern

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The ECG shows characteristic ______ waves in the inferior leads, suggesting digitalis effect on the heart.

임상 시나리오

핵심 개념

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