Vascular Surgery Practice Questions

Q: Cirsoid aneurysms most commonly occur in which of the following vessels?

Superficial temporal artery. **Explanation:** **Cirsoid aneurysm** is a clinical misnomer; it is not a true aneurysm but rather an **acquired arteriovenous malformation (AVM)** or fistula. It consists of a complex, pulsating mass of dilated, tortuous subcutaneous arteries and veins that communicate directly without an intervening capillary bed. 1. **Why the Correct Answer is Right:** The **superficial temporal artery** (specifically its branches on the scalp) is the most common site for cirsoid aneurysms. They often follow trauma but can be congenital. Clinically, they present as a "bag of worms" appearance on the scalp, exhibiting a palpable thrill and an audible bruit. They are clinically significant because they can cause skin necrosis, headache, or life-threatening hemorrhage if injured. 2. **Analysis of Incorrect Options:** * **Aortic arch:** Typically associated with true aneurysms (e.g., atherosclerotic or syphilitic) or dissections, not cirsoid malformations. * **Splenic artery:** The most common site for visceral artery aneurysms, usually associated with pregnancy or portal hypertension, but these are saccular/true aneurysms. * **Saphenous vein:** Involved in varicose veins or AV fistulas, but the term "cirsoid aneurysm" is specifically reserved for the arterial-dominant plexiform malformations of the scalp. **NEET-PG High-Yield Pearls:** * **Pathophysiology:** Direct communication between the superficial temporal artery and the accompanying veins. * **Clinical Sign:** **Nicoladoni-Branham sign** (Bradycardia occurs when the artery proximal to the AV fistula is compressed) may be positive. * **Treatment of Choice:** Surgical excision or selective embolization. * **Differential Diagnosis:** Must be distinguished from a cavernous hemangioma (which does not pulsate).

Q: Which of the following is true regarding popliteal aneurysms, except?

Uncommon among peripheral aneurysms. **Explanation:** Popliteal artery aneurysms (PAAs) are the **most common peripheral artery aneurysms**, accounting for approximately 70–80% of all peripheral cases. Therefore, Option D is the correct answer as it is a false statement. * **Why Option D is False (Correct Answer):** PAAs are not uncommon; they are the most frequent peripheral aneurysms. They are highly associated with other aneurysms: 50% of patients with a PAA have one on the contralateral side (bilateral), and 30–50% have a co-existing Abdominal Aortic Aneurysm (AAA). * **Option A is True:** The most common clinical sign is a pulsatile mass or swelling located in the popliteal fossa (behind the knee). * **Option B is True:** Most PAAs are asymptomatic until a complication occurs. The most common complication is **thromboembolism** (leading to acute limb ischemia) rather than rupture. * **Option C is True:** Surgery (bypass or endovascular stenting) is indicated for symptomatic aneurysms, those with complications, or asymptomatic ones >2 cm in diameter to prevent limb-threatening ischemia. **High-Yield Clinical Pearls for NEET-PG:** 1. **Rule of 50s:** 50% are bilateral; 50% are associated with AAA. 2. **Gender Predilection:** Predominantly seen in elderly males (95%). 3. **Complication Profile:** Unlike AAA (which tends to rupture), PAAs tend to **thrombose or embolize** ("Blue Toe Syndrome"). 4. **Diagnosis:** Duplex Ultrasound is the initial investigation of choice; CT Angiography is used for surgical planning.

Q: Neointimal hyperplasia causes vascular graft failure as a result of hypertrophy of which of the following?

Smooth muscle cells. **Explanation:** **Neointimal hyperplasia (NIH)** is the most common cause of late-stage vascular graft failure (typically occurring between 3 months and 2 years post-surgery). It is a physiological healing response gone awry in response to vessel wall injury or hemodynamic stress. **Why Smooth Muscle Cells (SMCs) are correct:** The hallmark of NIH is the migration and proliferation of **vascular smooth muscle cells**. Following vascular injury (e.g., at the site of an anastomosis), SMCs shift from a "contractile" phenotype to a "synthetic" phenotype. These cells migrate from the tunica media to the tunica intima, where they proliferate and deposit an abundant extracellular matrix, leading to thickening of the arterial wall and subsequent luminal narrowing (stenosis). **Why other options are incorrect:** * **Endothelial cells:** While endothelial injury triggers the process, these cells do not hypertrophy to cause stenosis; rather, their dysfunction or loss initiates the inflammatory cascade. * **Collagen and Elastic fibers:** These are components of the extracellular matrix produced by the synthetic smooth muscle cells. While they contribute to the bulk of the lesion, the primary cellular driver and the entity undergoing proliferation/hypertrophy is the smooth muscle cell itself. **High-Yield NEET-PG Pearls:** * **Timeline:** NIH is the primary cause of graft failure between **1 month and 2 years**. Failure 2 years is usually due to progressive atherosclerosis. * **Location:** In bypass grafts, NIH occurs most frequently at the **distal anastomosis** due to turbulent flow and compliance mismatch. * **Prevention:** Antiplatelet therapy (Aspirin/Clopidogrel) and statins are used to mitigate this response.

Q: Which of the following is NOT true about congenital lymphedema?

None of the above.. This question tests your knowledge of the classification and clinical presentation of primary lymphedema. Primary lymphedema is categorized based on the age of onset: **Lymphedema Congenita** (birth to 2 years), **Lymphedema Praecox** (2 to 35 years), and **Lymphedema Tarda** (after 35 years). ### **Explanation of Options** * **Option A (Bilateral involvement):** Congenital lymphedema is frequently bilateral. While it may be asymmetrical, the underlying lymphatic dysplasia (hypoplasia or aplasia) often affects both limbs. * **Option B (Lower limb involvement):** The lower extremities are the most common site of involvement in all forms of primary lymphedema, including the congenital type. * **Option C (Manifests before puberty):** By definition, "congenital" lymphedema is present at birth or appears within the first two years of life. Therefore, it almost always manifests well before the onset of puberty. Since all three statements (A, B, and C) are clinically accurate descriptions of congenital lymphedema, **Option D (None of the above)** is the correct choice. ### **High-Yield Clinical Pearls for NEET-PG** * **Milroy’s Disease:** A specific autosomal dominant form of congenital lymphedema associated with mutations in the **VEGFR-3** gene. It typically presents with painless, "woody" edema of the lower limbs at birth. * **Lymphedema Praecox:** The most common type of primary lymphedema (approx. 80%). It is more common in females and usually manifests at puberty (Meige’s disease). * **Stemmer’s Sign:** Inability to pinch the skin on the dorsal surface of the base of the second toe; a pathognomonic physical finding for lymphedema. * **Imaging:** **Lymphoscintigraphy** is the gold standard investigation for diagnosing and characterizing lymphatic flow.

Q: Bastio surgery for refractory left ventricular hypertrophy is:

Ventriculectomy. **Explanation:** **Batista Surgery** (Partial Left Ventriculectomy) was developed by Dr. Randas Batista. The procedure is based on **Laplace’s Law**, which states that wall tension ($T$) is proportional to the product of intraventricular pressure ($P$) and radius ($R$) ($T = P \times R$). In refractory heart failure or severe left ventricular hypertrophy/dilation, the increased radius leads to massive wall tension, decreasing myocardial efficiency. By surgically removing a wedge of the left ventricular wall (ventriculectomy), the radius is reduced, thereby lowering wall tension and improving the heart's contractile efficiency. **Analysis of Options:** * **Option C (Ventriculectomy):** This is the correct answer. The procedure involves the excision of a portion of the viable but dilated left ventricular myocardium (usually between the papillary muscles) to reduce the volume of the dilated chamber. * **Option A (Patch repair):** This refers to procedures like the **Dor procedure** (Endoventricular Circular Patch Plasty), used specifically for ventricular aneurysms, not general refractory hypertrophy. * **Option B (Mitral regurgitation repair):** While mitral repair may be done concurrently with Batista surgery if functional MR is present, it is not the definition of the surgery itself. * **Option D (Ventriculoplasty):** This is a broader term for reshaping the ventricle. While Batista is a form of ventriculoplasty, "Ventriculectomy" is the specific surgical action that defines the procedure. **High-Yield Clinical Pearls for NEET-PG:** * **Indication:** End-stage dilated cardiomyopathy as an alternative to cardiac transplantation. * **Key Principle:** Reduction of LV diameter to decrease wall stress (Laplace Law). * **Current Status:** Largely superseded by medical management and Ventricular Assist Devices (VADs) due to high long-term failure rates, but remains a classic surgical concept in exams.

Question 1

A patient complains of breathlessness following trauma. The trachea is shifted to the opposite side, a resonant percussion note is heard with absent breath sounds. What is a false statement regarding the insertion of an intercostal drain (ICD)?

Accepted Answer

Insert into the 4th or 5th intercostal space along the scapular line.

Answer

The direction of insertion is posterior and superior.

Answer

The insertion area must be palpated digitally to confirm the position.

Answer

Done in the upper part of the lower rib to avoid vessel and nerve injury.

Question 2

What is the antibiotic of choice for lymphedema?

Accepted Answer

Penicillin

Answer

Amikacin

Answer

Metronidazole

Answer

Ceftazidime

Question 3

Cirsoid aneurysms most commonly occur in which of the following vessels?

Accepted Answer

Superficial temporal artery

Answer

Aortic arch

Answer

Splenic artery

Answer

Saphenous vein

Question 4

Which of the following is true regarding popliteal aneurysms, except?

Accepted Answer

Uncommon among peripheral aneurysms

Answer

Presents as a swelling behind the knee

Answer

Presents with symptoms due to complication

Answer

Surgery is indicated in case of complication

Question 5

Neointimal hyperplasia causes vascular graft failure as a result of hypertrophy of which of the following?

Accepted Answer

Smooth muscle cells

Answer

Endothelial cells

Answer

Collagen fibers

Answer

Elastic fibers

Question 6

Which of the following is a method of treating venous ulcer?

Accepted Answer

Bisgaard method

Answer

Hilton's method

Answer

Trivex method

Answer

Tessari method

Question 7

Which of the following is NOT true about congenital lymphedema?

Accepted Answer

None of the above.

Answer

It is often bilateral.

Answer

It frequently involves the lower limbs.

Answer

It almost always manifests before puberty.

Question 8

A patient presents with varicose veins due to sapheno-femoral incompetence and normal perforators. Which of the following is NOT an appropriate management option?

Accepted Answer

Sclerotherapy

Answer

Endovascular stripping

Answer

Sapheno-femoral flush ligation

Answer

Sapheno-femoral flush ligation with stripping

Question 9

All of the following are risk factors for thoracic aortic aneurysm rupture except?

Accepted Answer

Anticoagulation use

Answer

Symptomatic aneurysm

Answer

Concurrent dissection

Answer

Increased patient age

Question 10

Bastio surgery for refractory left ventricular hypertrophy is:

Accepted Answer

Ventriculectomy

Answer

Patch repair

Answer

Mitral regurgitation repair

Answer

Ventriculoplasty

Vascular Surgery — MCQs

Vascular Surgery — MCQs

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