# The cardiac catheterization reveals severe ______ stenosis, with a pressure gradient higher than 40 mmHg across the valve.

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=168414  
> language: ko  
> subject: Diseases of the circulatory system

## 문제

The cardiac catheterization reveals severe ______ stenosis, with a pressure gradient higher than 40 mmHg across the valve.

## 보기

1. aortic **✔ 정답**
2. mitral
3. tricuspid
4. pulmonary
5. valvular

**정답: 1**

## 해설

Aortic stenosis with a pressure gradient >40 mmHg is considered severe. This high gradient indicates significant obstruction to left ventricular outflow, requiring increased force to pump blood through the narrowed aortic valve.

## 임상 시나리오

Aortic Stenosis:
- Definition: Narrowing of aortic valve opening
- Causes: Calcification, congenital bicuspid valve, rheumatic fever
- Symptoms: Angina, syncope, dyspnea
- Physical findings: Systolic ejection murmur, delayed carotid upstroke
- Diagnostic criteria:
* Severe AS: valve area 40 mmHg
* Moderate AS: valve area 1.0-1.5 cm², mean gradient 20-40 mmHg
* Mild AS: valve area >1.5 cm², mean gradient

## 핵심 개념

- **aortic** — Relating to the aorta, the main artery that carries blood from the heart to the rest of the body
- **mitral** — Relating to the valve between the left atrium and left ventricle of the heart
- **tricuspid** — Relating to the valve between the right atrium and right ventricle of the heart
- **pulmonary** — Relating to the valve between the right ventricle and pulmonary artery
- **valvular** — Relating to or affecting any of the heart valves

## 같은 주제 문제

- [The patient's EKG shows significant ST ______ in leads V2 through V4, suggesting acute ant…](https://mymerci.kr/pages/nclex_q.php?qn_id=168328)
- [Patient presents with ______ angina not responding to sublingual nitroglycerin.](https://mymerci.kr/pages/nclex_q.php?qn_id=168343)
- [Patient's telemetry shows ______ rhythm with a rate of 150, requiring immediate cardiovers…](https://mymerci.kr/pages/nclex_q.php?qn_id=168345)
- [Echo shows severe ______ regurgitation requiring valve replacement.](https://mymerci.kr/pages/nclex_q.php?qn_id=168361)
- [MRI shows acute ______ stroke in the left MCA territory.](https://mymerci.kr/pages/nclex_q.php?qn_id=168366)
- [In hypertensive crisis, the patient shows severely elevated ______ pressure, often exceedi…](https://mymerci.kr/pages/nclex_q.php?qn_id=168375)
- [During cardiac auscultation, the nurse hears an abnormal heart sound between S1 and S2, in…](https://mymerci.kr/pages/nclex_q.php?qn_id=168376)
- [The patient's ECG shows a ______ rhythm with no discernible P waves and an irregularly irr…](https://mymerci.kr/pages/nclex_q.php?qn_id=168377)

---

More free questions: [기출문제](https://mymerci.kr/)

_학습 참고용입니다. 실제 임상은 최신 지침과 소속 기관 프로토콜을 따르세요._