A 45-year-old man has 1-hour history of central chest pain radiating to his back. He is under work up in the emergency department. Which of the following is best to rule in aortic dissection?
سؤال مجاني 4 من 10 اليوم · اشترك وكمّل بدون حد
اعرض الإجابة
الإجابة والشرح
ادخل لحسابك عشان نحفظ إجاباتك ونوريك أخطاءك.
المصادر مختلفة. ملفات الدفعة فيها إجابتين، وما نرجّح وحدة على الثانية. سبب كل وحدة في الشرح تحت:
- إجابة: B. Unequal radial pulse
- إجابة ثانية: A. Wide mediastinum on Chest x-ray
Both options are listed features of aortic dissection, and the sources don't rank them for "ruling in".
- B (bank key): an inter-arm BP/pulse asymmetry (>20 mmHg) is a bedside criterion in the dissection work-up and is the more specific finding.
- A: a widened mediastinum is "characteristic", but it is non-specific, and a normal CXR does not rule dissection out.
ST elevation can occur (coronary involvement) and points away from dissection. The diastolic murmur of AR is a feature, so its absence doesn't help.
ليش كل خيار صح أو غلط
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A
ليش صح
The Dyslipidemia and Aortic Dissection slides call a widened mediastinum on chest x-ray characteristic of aortic dissection.
✓ Dr. Al-Ahmadi - Dyslipidemia and Aortic Dissection✅.pdf · p. 5 -
B
ليش صح
The Aortic Diseases slides list asymmetric BP (>20 mmHg) between the arms among the clinical clues (with tearing pain, hypertension and malperfusion) in the dissection work-up.
✓ 10• Aortic Diseases [Slides].pdf · p. 2 -
C
ليش غلط
ECG changes in dissection are nonspecific (ST depression, T-wave changes) or ST elevation from coronary artery occlusion, which mimics an MI, so ST elevation does not rule in dissection.
✓ Dr. Al-Ahmadi - Dyslipidemia and Aortic Dissection✅.pdf · p. 8 -
D
ليش غلط
Aortic regurgitation is a listed complication of dissection, so a diastolic murmur can occur and its absence does not rule in dissection.
✓ Step Up To Medicine 6th(Aortic dissection ).pdf · p. 3
- المصدر
- 10• Aortic Diseases [Slides].pdf · p. 2
Dr. Al-Ahmadi - Dyslipidemia and Aortic Dissection✅.pdf · p. 5
Dr. Al-Ahmadi - Dyslipidemia and Aortic Dissection✅.pdf · p. 8 - المحاضرة
- Hypertensive Crisis & Aortic Dissection · Cardiology · Module B
- ظهر في
- Cardio bank