Source / episode info
- **Episode:**158
- **Title:**Divine Intervention Episode 158 – USMLE Step 2CK Rapid Review Series 17 (Surgery).
- **Published:**2019-09-23
- Source:Episode page
One-liner
This episode reviews high-yield vascular topics including lymphedema causes (filariasis, Turner syndrome), varicose vein pathophysiology (Bosworth classification), carotid stenosis management (antiplatelet vs. anticoagulant), aortic dissection staging and treatment (Type A/B), and AAA screening guidelines and surgical complications (endoleak).
High-yield summary
- Lymphedema: The most common cause globally is filariasis. Congenital lymphedema associated with Turner syndrome involves cystic hygroma. Long-standing lymphedema can degenerate into a malignant lymphangiosarcoma.
- Varicose Veins: Pathophysiology relies on venous valve incompetence (Bosworth classification). Key risk factors include prolonged standing and OCP use. Ulcers are typically painless and located above the malleoli.
- Carotid Stenosis: Diagnosis requires Doppler/Carotid duplex ultrasound. Management for stable stenosis involves antiplatelet agents (aspirin, clopidogrel); anticoagulants (e.g., heparin) are reserved only if a cardioembolic source (like atrial fibrillation) is present.
- Aortic Dissection: Type A dissection involves the ascending aorta and requires immediate surgical repair. Type B dissection, limited to the descending aorta, is managed medically with aggressive blood pressure control using beta-blockers (Labetalol).
- AAA Management: Screening guidelines include men aged 65–75 with a smoking history or family history of AAA. Surgical intervention is required if the diameter exceeds 5.5 cm, if symptomatic, or if it grows by >1 cm/year.
Learning objectives
- Differentiate the etiology and complications of lymphedema.
- Apply appropriate diagnostic testing and management for peripheral vascular disease (varicose veins).
- Select the correct antiplatelet vs. anticoagulant regimen for carotid stenosis based on embolic source.
- Classify aortic dissection by type (A or B) and determine the appropriate immediate medical/surgical intervention.
- Determine the indications, size cutoffs, and complications associated with Abdominal Aortic Aneurysm (AAA).
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