# The cardiac monitor shows ______ beats, indicating that electrical signals from the ventricles are occurring earlier than expected.

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=168381  
> language: ko  
> subject: Diseases of the circulatory system

## 문제

The cardiac monitor shows ______ beats, indicating that electrical signals from the ventricles are occurring earlier than expected.

Good Doctor Season 4 Episode 7

## 보기

1. premature **✔ 정답**
2. ectopic
3. abnormal
4. irregular
5. extra

**정답: 1**

## 해설

Premature beats, specifically premature ventricular contractions (PVCs), occur when the ventricles contract earlier than they should in the normal cardiac cycle. These are visible on cardiac monitors as early beats that typically have a different morphology than normal beats.

## 임상 시나리오

Key Points:
- Premature Ventricular Contractions (PVCs)
- Early depolarization of ventricles
- Abnormal electrical impulse originating in ventricles
- Common cardiac arrhythmia
- Characteristics on ECG:
* Wide QRS complex
* No preceding P wave
* Compensatory pause
- Common causes:
* Caffeine
* Stress
* Electrolyte imbalance
* Heart disease
* Medications
- Assessment findings:
* Palpitations
* Skipped beats
* Irregular pulse
- Treatment options:
* Beta blockers
* Calcium channel blockers
* Antiarrhythmic medications
* Lifestyle modifications

## 핵심 개념

- **premature** — occurring earlier than expected or before the usual time in a physiological process
- **ectopic** — occurring in an abnormal position or place within the body
- **abnormal** — deviating from what is normal or usual, typically in a way that is undesirable or worrying
- **irregular** — not occurring at expected or equal intervals; lacking a consistent pattern or rhythm
- **extra** — additional or supplementary to what is normal or expected

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