Vascular Surgery Practice Questions

Q: What is the appropriate management for a male patient who presents to the hospital with abdominal pain from cholecystitis and is incidentally detected with an asymptomatic abdominal aortic aneurysm?

Monitor till size reaches 55 mm. ***Monitor till size reaches 55 mm*** - For **asymptomatic abdominal aortic aneurysms (AAAs)** in male patients, elective repair is generally recommended when the aneurysm reaches 5.5 cm (55 mm) in diameter. - This size balances the risk of rupture against the risks associated with surgery. *Immediate surgery* - Immediate surgery is reserved for patients with a **symptomatic** or **ruptured AAA**, indicated by severe abdominal pain, hypotension, and a pulsatile mass. - An incidentally detected, asymptomatic AAA typically does not warrant emergency surgical intervention. *Monitor till size reaches 45 mm* - A 45 mm aneurysm in a male patient is typically managed with **regular surveillance** rather than immediate intervention. - The risk of rupture at this size is generally considered low enough to avoid the risks of elective surgery. *USG monitoring till size of the aneurysm reaches 70 mm* - Monitoring an AAA until it reaches 70 mm (7 cm) is **not safe practice** due to a significantly increased risk of rupture as the aneurysm grows beyond 5.5 cm. - Guidelines recommend intervention at 5.5 cm to prevent life-threatening rupture.

Q: A young man with tuberculosis presents with massive recurrent hemoptysis. For angiographic treatment, which vascular structure should be evaluated first?

Bronchial artery. ***Bronchial artery*** - The **bronchial arteries** are the primary source of blood supply to the conducting airways, and in conditions like **tuberculosis**, they often become hypertrophied and tortuous, leading to **massive hemoptysis**. - Angiographic embolization of these abnormal bronchial arteries is a common and effective treatment for persistent or massive hemoptysis, especially in patients with chronic inflammatory lung diseases. *Pulmonary artery* - The **pulmonary artery** carries deoxygenated blood to the lungs for gas exchange and is less commonly the source of hemoptysis, unless there is a **pulmonary artery aneurysm**, fistula, or erosion. - While pulmonary hemorrhage can occur, it typically presents differently and is not the primary source of massive recurrent hemoptysis in tuberculosis. *Pulmonary vein* - The **pulmonary veins** carry oxygenated blood from the lungs back to the left atrium and are almost never the source of hemoptysis. - Hemoptysis originates from the arterial system due to rupture of high-pressure vessels into the airways. *Superior vena cava* - The **superior vena cava** is a large vein that drains deoxygenated blood from the upper body into the right atrium and is not directly involved in the pulmonary circulation supplying the airways. - It would not be a source of hemoptysis; symptoms related to SVC obstruction would be **upper body edema** and plethora.

Q: The best material for below-inguinal arterial graft is:

Saphenous vein graft (upside-down). ***Saphenous vein graft (upside-down)*** - The **autologous saphenous vein** is the material of choice for below-inguinal arterial bypasses due to its superior patency rates compared to synthetic grafts. - It is often harvested and implanted **'upside-down' (reversed)** to ensure the valves do not obstruct blood flow, or can be used *in situ* after rendering the valves incompetent. - Five-year patency rates for autologous vein grafts exceed 70-80% for femoropopliteal bypasses. *Cryopreserved vein* - **Cryopreserved saphenous vein allografts** are an alternative when autologous vein is unavailable or inadequate. - However, they have **significantly lower patency rates** compared to autologous vein grafts due to immunological responses and structural degradation. - They are generally reserved for salvage situations or as a bridge in limb-threatening ischemia. *Dacron* - **Dacron (polyethylene terephthalate)** grafts are primarily used for large-diameter arterial replacements, such as in **aortic bypasses**, and are less suitable for smaller, high-resistance vessels below the inguinal ligament. - They tend to have higher rates of **thrombosis** and infection when used in infra-inguinal positions compared to vein grafts. *PTFE* - **Polytetrafluoroethylene (PTFE)** grafts have lower patency rates than autologous vein grafts, particularly in smaller diameter vessels and below-knee positions, due to issues like **intimal hyperplasia** at the anastomoses. - While suitable when autologous vein is unavailable, it is generally considered inferior for below-inguinal peripheral arterial disease, with 3-year patency rates around 50-60% for above-knee and 30-40% for below-knee positions.

Q: TRIVEX is a percutaneous technique of:

Transilluminated powered phlebectomy. ***Transilluminated powered phlebectomy*** - **TRIVEX** is an acronym for **Transilluminated Powered Phlebectomy**, a minimally invasive surgical technique for removing varicose veins. - This procedure uses a specialized device that combines **transillumination** to visualize veins beneath the skin and a powered resection tool to excise them. *Sclerotherapy* - **Sclerotherapy** involves injecting a chemical solution into varicose veins to cause irritation and eventual collapse, rather than mechanical removal. - It is typically used for smaller **spider veins** and **reticular veins**. *Vein stripping* - **Vein stripping** is a traditional surgical method that involves completely removing a varicose vein through large incisions, often requiring general anesthesia. - TRIVEX is a less invasive approach compared to this conventional method of vein removal. *Endovenous laser ablation* - **Endovenous laser ablation (EVLA)** uses laser energy to heat and close varicose veins from within, which is a different mechanism from mechanical removal. - This technique primarily targets larger saphenous veins and involves threading a **laser fiber** into the vein.

Q: According to the Spetzler-Martin grading scale, what score is assigned for the SIZE component of a 5 cm arteriovenous malformation (AVM)?

Score of 2. ***Score of 2*** - A 5 cm AVM falls into the **medium size category** (3-6 cm) according to the Spetzler-Martin grading scale. - This specific size range is assigned a score of **2** for the size component. - The Spetzler-Martin scale evaluates three components: size, eloquence of adjacent brain, and venous drainage. *Score of 3* - This score is assigned to **large AVMs (greater than 6 cm)** for the size component. - A 5 cm AVM does not meet this threshold and therefore receives a score of 2, not 3. *Score of 4* - This is not a valid score for the size component in the Spetzler-Martin grading system. - The size component only assigns scores of 1 (small, 6 cm). *Score of 5* - This is not a score assigned for the size component of an AVM in the Spetzler-Martin grading scale. - While Grade V is the highest overall grade (scores 5-6), the size component itself only ranges from 1 to 3 points.

Q: Nicoladoni-Branham's sign is seen in:

Arteriovenous fistula. ***Arteriovenous fistula*** - The **Nicoladoni-Branham's sign** (or Branham's sign) is a bradycardia and a decrease in pulse pressure that occurs upon manual compression of an **arteriovenous fistula**. - This sign is due to the sudden increase in **systemic vascular resistance** and venous return to the heart, which activates baroreceptors, leading to reflex bradycardia. *Buerger's disease* - This disease, also known as **Thromboangiitis obliterans**, is characterized by vasculitis leading to thrombosis and obstruction of small and medium-sized arteries and veins, primarily in the limbs. - It presents with **intermittent claudication**, digital ischemia, and pain, but does not involve the Nicoladoni-Branham's sign. *Raynaud's disease* - Raynaud's phenomenon involves **vasospasm** of arterioles, usually in the fingers and toes, triggered by cold or emotional stress, causing color changes (pallor, cyanosis, rubor). - It is a functional vascular disorder and does not involve an abnormal connection between arteries and veins that would elicit Branham's sign. *Peripheral aneurysm* - A peripheral aneurysm is a localized **dilation of an artery** outside the aorta, commonly in the popliteal or femoral arteries. - While it can cause local symptoms like pain, thrombosis, or embolization, it does not involve the characteristic hemodynamic changes that lead to Nicoladoni-Branham's sign.

Q: What is the next step in the management of a young basketball player who develops an acute onset of subclavian vein thrombosis (effort thrombosis) after heavy exercise?

Thrombolytic therapy. ***Thrombolytic therapy (Catheter-directed thrombolysis)*** - In **Paget-Schroetter syndrome** (effort thrombosis), young active patients presenting within **14 days** of symptom onset are candidates for **catheter-directed thrombolysis (CDT)** after initial anticoagulation - This approach aims to restore venous patency and prevent **post-thrombotic syndrome**, which occurs in up to 50% of conservatively managed cases - **Standard protocol**: Immediate therapeutic anticoagulation → CDT (if eligible) → subsequent thoracic outlet decompression (first rib resection) → rehabilitation - CDT is preferred over systemic thrombolysis due to lower bleeding risk and higher success rates in restoring patency - **Key point**: While anticoagulation is initiated immediately, definitive management in young athletes involves thrombolysis followed by surgical decompression *Physical therapy and rehabilitation* - Rehabilitation is **essential after definitive treatment** (post-thrombolysis and post-surgical decompression) but not the immediate next step - Starting rehabilitation without addressing the acute thrombosis would risk clot propagation, pulmonary embolism, and permanent venous damage *Antibiotics* - Antibiotics treat bacterial infections and have **no role in thrombosis** management - Paget-Schroetter syndrome is a **mechanical compression** issue (thoracic outlet obstruction) causing hypercoagulability, not an infectious process - Use of antibiotics would delay appropriate treatment *Anti-inflammatory drugs for pain management* - NSAIDs may provide symptomatic relief but do **not address the underlying thrombus** - Pain management alone would be inadequate and potentially dangerous, allowing thrombus propagation - Anti-inflammatory drugs do not prevent post-thrombotic syndrome or restore venous patency

Q: Buerger's disease is associated with

Smoking. ***Smoking*** - Buerger's disease, or **thromboangiitis obliterans**, is strongly associated with **cigarette smoking**, leading to vasculitis and ischemia. - The cessation of smoking often leads to significant improvement in symptoms and cessation of disease progression. *Cold environment* - While cold exposure can exacerbate **peripheral vascular conditions**, it is not a primary cause or association of Buerger's disease. - The disease is primarily linked to **vasculitis** due to smoking, not environmental factors. *Trauma* - Trauma can cause vascular injury but is not a recognized association with Buerger's disease. - This disease is characterized by **segmental vasculitis** primarily related to **tobacco exposure**. *Alcoholism* - Although **alcoholism** can lead to various health issues, it is not specifically linked to Buerger's disease. - The primary risk factor is **smoking**, with alcoholic effects on the vasculature differing from those in Buerger's.

Q: Among the following arteries, which is dissected most frequently during angiography performed via the femoral route?

Celiac trunk. ***Celiac trunk*** - The **celiac trunk** is the **most frequently dissected artery** during femoral route angiography due to its **challenging anatomical characteristics**. - It arises at a **steep downward angle** (typically 45-90°) from the anterior aorta, requiring significant **catheter manipulation and torque** to engage the orifice. - The acute angulation increases the risk of **subintimal catheter passage** during selective cannulation attempts, leading to iatrogenic dissection. - The need for **repeated attempts** and catheter repositioning when engaging the celiac trunk further elevates dissection risk. *Superior mesenteric artery* - While the **SMA** is frequently cannulated during abdominal angiography, it has a **more favorable anatomy** for catheter engagement. - Its **less acute angle** of origin (typically 30-45° caudally) and more anterior takeoff make it **easier to cannulate** with less manipulation. - Easier cannulation translates to **lower dissection risk** compared to the celiac trunk, despite being commonly studied. *Inferior mesenteric artery* - The **IMA** is a smaller vessel with lower flow, originating from the lower abdominal aorta. - It is **less frequently cannulated** in routine angiography due to its small caliber and distal location. - Lower frequency of selective cannulation means fewer opportunities for dissection. *Gastroduodenal artery* - The **GDA** is a **secondary branch** arising from the hepatic artery (itself a celiac trunk branch). - Due to its **distal location** and smaller size, selective GDA catheterization is uncommon in routine angiography. - Its infrequent selective cannulation makes dissection during femoral angiography extremely rare.

Q: Buerger's disease affects all except which of the following?

Lymphatics. ***Lymphatics*** - Buerger's disease (Thromboangiitis obliterans) primarily involves the **small and medium-sized arteries and veins**, leading to inflammation and thrombosis [1]. - It does not directly affect the **lymphatic system**; lymphatic involvement is not a characteristic feature of this disease. *Small vessels* - Buerger's disease is an **inflammatory vasculitis** that specifically targets small and medium-sized arteries and veins of the extremities [1]. - This involvement leads to **thrombosis** and occlusion, causing ischemia and tissue damage. *Nerves* - While Buerger's disease primarily affects blood vessels, **peripheral nerve involvement** can occur secondary to vascular insufficiency and ischemia. - **Ischemic neuropathy** is a common complication due to reduced blood flow to the nerves. *Veins* - Buerger's disease frequently involves the superficial and deep veins, causing **superficial phlebitis** and thrombophlebitis. - This venous inflammation contributes to the overall vascular pathology observed in affected limbs.

Question 1

What is the appropriate management for a male patient who presents to the hospital with abdominal pain from cholecystitis and is incidentally detected with an asymptomatic abdominal aortic aneurysm?

Accepted Answer

Monitor till size reaches 55 mm

Answer

Immediate surgery

Answer

Monitor till size reaches 45 mm

Answer

USG monitoring till size of the aneurysm reaches 70 mm

Question 2

A young man with tuberculosis presents with massive recurrent hemoptysis. For angiographic treatment, which vascular structure should be evaluated first?

Accepted Answer

Bronchial artery

Answer

Superior vena cava

Answer

Pulmonary artery

Answer

Pulmonary vein

Question 3

The best material for below-inguinal arterial graft is:

Accepted Answer

Saphenous vein graft (upside-down)

Answer

Cryopreserved vein

Answer

Dacron

Answer

PTFE

Question 4

TRIVEX is a percutaneous technique of:

Accepted Answer

Transilluminated powered phlebectomy

Answer

Vein stripping

Answer

Sclerotherapy

Answer

Endovenous laser ablation

Question 5

According to the Spetzler-Martin grading scale, what score is assigned for the SIZE component of a 5 cm arteriovenous malformation (AVM)?

Accepted Answer

Score of 2

Answer

Score of 3

Answer

Score of 4

Answer

Score of 5

Question 6

Nicoladoni-Branham's sign is seen in:

Accepted Answer

Arteriovenous fistula

Answer

Raynaud's disease

Answer

Peripheral aneurysm

Answer

Buerger's disease

Question 7

What is the next step in the management of a young basketball player who develops an acute onset of subclavian vein thrombosis (effort thrombosis) after heavy exercise?

Accepted Answer

Thrombolytic therapy

Answer

Antibiotics

Answer

Physical therapy and rehabilitation

Answer

Anti-inflammatory drugs for pain management

Question 8

Buerger's disease is associated with

Accepted Answer

Smoking

Answer

Alcoholism

Answer

Trauma

Answer

Cold environment

Question 9

Among the following arteries, which is dissected most frequently during angiography performed via the femoral route?

Accepted Answer

Celiac trunk

Answer

Inferior mesenteric artery

Answer

Gastroduodenal artery

Answer

Superior mesenteric artery

Question 10

Buerger's disease affects all except which of the following?

Accepted Answer

Lymphatics

Answer

Small vessels

Answer

Nerves

Answer

Veins

Vascular Surgery — MCQs

Vascular Surgery — MCQs

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