Vascular Surgery Practice Questions

Q: In the CEAP clinical classification, what does C-4b indicate?

Lipodermatosclerosis or atrophie blanche. The **CEAP classification** is the international standard for describing Chronic Venous Disorders. The "C" component stands for **Clinical signs**, graded from 0 to 6 based on severity. ### **Explanation of the Correct Answer** **C4** represents skin and subcutaneous tissue changes secondary to chronic venous hypertension. It is subdivided into: * **C4a:** Minor changes such as **pigmentation** (hemosiderin deposition) or **eczema** (stasis dermatitis). * **C4b:** More advanced, fibrotic changes including **lipodermatosclerosis** (induration and scarring of the skin/fat) or **atrophie blanche** (white, stellate scar tissue). Therefore, **Option D** is the correct classification for C4b. ### **Analysis of Incorrect Options** * **Option A (Edema):** This corresponds to **C3**. It is typically pitting edema at the ankle level. * **Option B (Pigmentation/Eczema):** These are the milder skin changes classified as **C4a**. * **Option C (Healed venous ulcer):** This corresponds to **C5**. An active, open venous ulcer is classified as **C6**. ### **NEET-PG High-Yield Pearls** * **C0:** No visible or palpable signs of venous disease. * **C1:** Telangiectasias or reticular veins (Spider veins). * **C2:** Varicose veins (distinguished from C1 by being >3mm in diameter). * **Lipodermatosclerosis** often gives the lower leg an **"Inverted Champagne Bottle"** appearance due to proximal swelling and distal fibrosis. * **Atrophie blanche** is also known as *livedoid vasculopathy*. * The **"E, A, P"** in CEAP stand for Etiology (Congenital, Primary, Secondary), Anatomy (Superficial, Perforator, Deep), and Pathophysiology (Reflux, Obstruction).

Q: SEPS is a procedure used for what?

Veins. **Explanation:** **SEPS (Subfascial Endoscopic Perforator Surgery)** is a minimally invasive surgical technique used specifically in the management of **Chronic Venous Insufficiency (CVI)**. **Why Veins is the correct answer:** The primary pathology in advanced CVI (CEAP classes C4–C6) is often **perforator vein incompetence**. These veins normally allow blood to flow from the superficial to the deep venous system. When they become incompetent, high pressure from the deep veins is transmitted to the superficial system, leading to skin changes and venous ulcers. SEPS involves using an endoscope inserted into the subfascial space of the leg to visualize and ligate these incompetent perforators. This is preferred over the traditional open **Linton’s procedure**, as it significantly reduces wound healing complications in areas with compromised skin. **Why other options are incorrect:** * **Arteries:** Arterial pathologies (like PAD) are managed via bypass grafts, endarterectomy, or angioplasty. SEPS does not address arterial flow. * **Lymphatics:** Lymphedema is managed conservatively or via lymphovenous anastomosis; SEPS has no role in lymphatic drainage. * **AV Fistula:** These are connections between arteries and veins (congenital or for dialysis) and are managed by ligation or surgical creation, not subfascial endoscopy. **High-Yield Clinical Pearls for NEET-PG:** * **Indication:** Most commonly used for **Venous Ulcers (CEAP Class C6)** that fail to heal with compression therapy. * **Anatomy:** It targets the **Cockett’s perforators** (lower leg). * **Advantage:** Lower risk of "wound dehiscence" compared to the open Linton’s procedure. * **Contraindications:** Presence of Deep Vein Thrombosis (DVT) or severe arterial ischemia.

Q: What is the most common complication following varicose vein surgery?

Ecchymosis. **Explanation:** The correct answer is **Ecchymosis (Option A)**. **1. Why Ecchymosis is correct:** Ecchymosis (bruising) is the **most common** complication following varicose vein surgery, particularly after Trendelenburg procedure with stripping of the Great Saphenous Vein (GSV). It occurs due to the tearing of small tributary veins during the stripping process, leading to localized extravasation of blood into the subcutaneous tissues. While it is benign and usually resolves within 2–3 weeks, it occurs in nearly all patients to some degree. **2. Why the other options are incorrect:** * **Deep Vein Thrombosis (DVT):** This is the most **serious/dreaded** complication, but it is relatively rare (occurring in <1% of cases) due to early post-operative mobilization. * **Recurrence of varicosity:** This is a common **long-term** complication (occurring in 20–30% of cases over 10 years), often due to neovascularization or inadequate initial ligation. However, it is not as frequent in the immediate post-operative period as ecchymosis. * **Venous ulcer:** This is a clinical manifestation of chronic venous insufficiency (CVI), not a direct complication of the surgery itself. In fact, surgery is often performed to *heal* such ulcers. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common complication:** Ecchymosis/Bruising. * **Most common nerve injured:** **Saphenous nerve** (during stripping below the knee), leading to numbness along the medial aspect of the leg/foot. * **Most common nerve injured in Short Saphenous Vein surgery:** Sural nerve. * **Most common site of recurrence:** The saphenofemoral junction (due to tactical error or neovascularization). * **Gold Standard Investigation:** Venous Duplex Ultrasound.

Q: Which of the following is NOT true about berry aneurysms?

The wall contains smooth muscle and fibroblasts.. **Explanation:** Berry (saccular) aneurysms are acquired lesions resulting from a structural defect in the arterial wall. **1. Why Option C is the correct answer (The False Statement):** The hallmark of a berry aneurysm is the **absence of the tunica media (smooth muscle) and the internal elastic lamina** at the site of the aneurysm. The wall of the sac is composed only of thickened hyalinized intima and adventitia. Therefore, the statement that the wall contains smooth muscle is histologically incorrect. **2. Analysis of Incorrect Options (True Statements):** * **Option A:** They are associated with genetic conditions, most notably **Autosomal Dominant Polycystic Kidney Disease (ADPKD)**, Ehlers-Danlos syndrome (Type IV), and Marfan syndrome. * **Option B:** Rupture typically occurs at the **apex (dome)** of the sac because it is the thinnest part. This leads to blood entering the subarachnoid space, causing a **Subarachnoid Hemorrhage (SAH)**. * **Option C:** Approximately **90%** of berry aneurysms occur in the **anterior circulation** (Circle of Willis), specifically at arterial branching points where hemodynamic stress is highest. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site:** Junction of the **Anterior Communicating Artery (ACoA)** and Anterior Cerebral Artery. * **Clinical Presentation:** "Worst headache of my life" (Thunderclap headache). * **Risk Factors:** Hypertension and smoking are the most important modifiable risk factors. * **Associated Nerve Palsy:** Aneurysms at the **Posterior Communicating Artery (PCoA)** can cause 3rd Cranial Nerve palsy (dilated pupil, ptosis).

Q: A 40-year-old woman is suspected of having a carotid body tumor. Which one of the following is most characteristic of such a tumor?

They arise from structures that respond to changes in PO2.. **Explanation:** **Carotid Body Tumors (CBTs)**, also known as chemodectomas or paragangliomas, are the most common head and neck paragangliomas. **1. Why Option D is Correct:** The carotid body is a **chemoreceptor** located at the bifurcation of the common carotid artery. Its primary physiological role is to sense changes in arterial blood gas composition, specifically responding to **decreased PO2 (hypoxia)**, increased PCO2, and decreased pH. Tumors arising from these structures retain their identity as chemoreceptors. **2. Why Other Options are Incorrect:** * **Option A:** While they are paragangliomas, carotid body tumors are usually **non-functional** (less than 5% secrete catecholamines). This distinguishes them from adrenal pheochromocytomas. * **Option B:** They are actually **more common at high altitudes**. Chronic hypoxia at high altitudes leads to compensatory hyperplasia of the carotid body, increasing the risk of tumor development. * **Option C:** Structures that respond to changes in blood volume/pressure are **baroreceptors** (located in the carotid sinus). The carotid body is a chemoreceptor, not a baroreceptor. **3. High-Yield Clinical Pearls for NEET-PG:** * **Fontaine’s Sign:** The tumor is vertically fixed but **horizontally mobile** (because it is attached to the carotid bifurcation). * **Lyre Sign:** On angiography, there is a characteristic widening/splaying of the carotid bifurcation. * **Shamblin Classification:** Used to grade the tumor based on its involvement/encasement of the carotid vessels. * **Inheritance:** Most are sporadic, but familial cases (often bilateral) are associated with **SDHD gene mutations**. * **Treatment:** Surgical excision is the gold standard; preoperative embolization may be used to reduce vascularity.

Q: A 63-year-old woman with a history of aortic stenosis and left ventricular hypertrophy experienced cardiac arrest and died. Which of the following predisposes to sudden cardiac death?

Hypokalemia. ### Explanation **Correct Option: B. Hypokalemia** In patients with **Aortic Stenosis (AS)** and **Left Ventricular Hypertrophy (LVH)**, the myocardium is highly susceptible to electrical instability. Hypokalemia lowers the resting membrane potential and prolongs ventricular repolarization (QT prolongation), which significantly increases the risk of life-threatening ventricular arrhythmias (VT/VF) and sudden cardiac death (SCD). In the context of LVH, the thickened muscle already has altered conduction properties, making electrolyte imbalances particularly lethal. **Analysis of Incorrect Options:** * **A. Split first heart sound:** A split S1 is a common physiological finding (closure of mitral then tricuspid valves) and does not predispose to SCD. In AS, the more relevant finding is a **reversed (paradoxical) splitting of S2**. * **C. Soft murmur at the left sternal border that varies with inspiration:** This describes a physiological or mild tricuspid regurgitation murmur. Murmurs that increase with inspiration are right-sided and generally benign in the context of SCD risk. * **D. Failure of the CVP to rise (Negative Hepato-jugular Reflux):** A positive HJR (rise in CVP >3 cm H2O) indicates fluid overload or right heart failure. A negative HJR is a normal finding and does not correlate with an increased risk of sudden death. **High-Yield Clinical Pearls for NEET-PG:** * **AS Triad (SAD):** Syncope, Angina, and Dyspnea. Once symptoms appear, the risk of SCD increases dramatically. * **ECG in Hypokalemia:** Look for flattened T-waves, prominent **U-waves**, and ST-segment depression. * **Critical AS:** Defined by a valve area ** 40 mmHg**. * **Avoid in AS:** Vasodilators (like ACE inhibitors or Nitrates) should be used with extreme caution as they can cause a catastrophic drop in preload/afterload, leading to syncope or arrest.

Q: Allen test detects insufficiency of which artery?

Radial artery. **Explanation:** The **Allen test** is a clinical bedside assessment used to evaluate the **patency of the arterial supply to the hand**, specifically the adequacy of the collateral circulation between the radial and ulnar arteries via the palmar arches. **Why Radial Artery is the Correct Answer:** The test is most commonly performed before procedures that involve instrumentation of the radial artery (e.g., **Arterial Blood Gas (ABG) sampling** or radial artery cannulation). By compressing both the radial and ulnar arteries and then releasing only the ulnar artery, the clinician observes the "blush" (return of color) to the palm. If the hand remains pale, it indicates **ulnar artery insufficiency**, meaning the hand is dependent solely on the **radial artery**. Therefore, the test is designed to detect if the radial artery is the "insufficient" or "sole" provider, preventing ischemic complications if that radial artery were to be damaged during a procedure. **Analysis of Incorrect Options:** * **B. Ulnar artery:** While the test involves the ulnar artery, the primary clinical goal is to ensure the ulnar artery is *functional* so that the radial artery can be safely accessed. * **C. Popliteal artery:** This is located behind the knee; its patency is assessed via the popliteal pulse or the Foucher’s sign (for cysts). * **D. Aorta:** Aortic patency is assessed via central pulses, blood pressure differentials, or imaging (CT/MRI). **High-Yield Clinical Pearls for NEET-PG:** * **Modified Allen Test:** The standard version used today where only the ulnar artery is released. A "positive" or normal result is a return of color within **5–15 seconds**. * **Indication:** Mandatory before radial artery harvesting for **CABG** or radial artery cannulation. * **Alternative:** If the Allen test is inconclusive, **Pulse Oximetry** or **Doppler ultrasound** can be used to confirm collateral flow.

Question 1

In the CEAP clinical classification, what does C-4b indicate?

Accepted Answer

Lipodermatosclerosis or atrophie blanche

Answer

Edema

Answer

Pigmentation or eczema

Answer

Healed venous ulcer

Question 2

What is Stemmer's sign?

Accepted Answer

Subcutaneous fibrosis which makes skin over the dorsum of the foot not pinchable

Answer

Swelling in the foot seen with lymphoedema

Answer

Loss of normal perimalleolar shape in lymphoedema

Answer

Pitting oedema in filariasis

Question 3

SEPS is a procedure used for what?

Accepted Answer

Veins

Answer

Arteries

Answer

Lymphatics

Answer

AV fistula

Question 4

What is the most common complication following varicose vein surgery?

Accepted Answer

Ecchymosis

Answer

Deep vein thrombosis

Answer

Recurrence of varicosity

Answer

Venous ulcer

Question 5

Which of the following is NOT true about berry aneurysms?

Accepted Answer

The wall contains smooth muscle and fibroblasts.

Answer

Associated with familial syndromes.

Answer

The most common site of rupture is the apex, causing subarachnoid hemorrhage (SAH).

Answer

90% occur at the anterior circulation at branching points.

Question 6

What is the most common site of Berry's aneurism?

Accepted Answer

Junction of the anterior cerebral and anterior communicating artery

Answer

Trifurcation of the internal carotid artery

Answer

Bifurcation of the basilar artery

Answer

Middle cerebral artery

Question 7

A 40-year-old woman is suspected of having a carotid body tumor. Which one of the following is most characteristic of such a tumor?

Accepted Answer

They arise from structures that respond to changes in PO2.

Answer

They secrete catecholamines.

Answer

They are more common at sea level.

Answer

They arise from structures that respond to changes in blood volume.

Question 8

A 63-year-old woman with a history of aortic stenosis and left ventricular hypertrophy experienced cardiac arrest and died. Which of the following predisposes to sudden cardiac death?

Accepted Answer

Hypokalemia

Answer

Split first heart sound

Answer

Soft murmur at the left sternal border that varies with inspiration

Answer

Failure of the central venous pressure to rise more than 1 cm H2O with 30 seconds of pressure on the liver (hepato-jugular reflux)

Question 9

Allen test detects insufficiency of which artery?

Accepted Answer

Radial artery

Answer

Ulnar artery

Answer

Popliteal artery

Answer

Aorta

Question 10

A 55-year-old man with recent onset of atrial fibrillation presents with a cold, pulseless left lower extremity. He complains of left leg paresthesia and is unable to dorsiflex his toes. Following a successful popliteal embolectomy, with restoration of palpable pedal pulses, the patient is still unable to dorsiflex his toes. What is the next step in management?

Accepted Answer

Immediate fasciotomy

Answer

Electromyography (EMG)

Answer

Measurement of anterior compartment pressure

Answer

Elevation of the left leg

Vascular Surgery — MCQs

Vascular Surgery — MCQs

On this page

Practice by Chapter

Want unlimited practice?