Vascular Surgery Practice Questions

Q: In the management of aortic dissection, which factor is most crucial in determining the choice between surgical and medical management?

The type of dissection (Type A vs. Type B). ***The type of dissection (Type A vs. Type B)*** - **Type A dissections** (involving the ascending aorta) almost always require **emergency surgical repair** due to the high risk of fatal complications like aortic rupture, cardiac tamponade, and acute aortic regurgitation. - **Type B dissections** (not involving the ascending aorta) are typically managed **medically** unless complicated by malperfusion, rupture, or uncontrolled pain. *The age of the patient* - While a patient's age and overall health influence **surgical risk** and suitability, it is not the primary determinant for choosing between surgical or medical management in aortic dissection. - Young patients with **Type B dissection** are still typically initially managed medically, while older patients with **Type A dissection** still require surgery. *The presence of hypertension* - **Hypertension** is a significant risk factor for developing aortic dissection and a key component of medical management (blood pressure control). - However, the presence of hypertension does not directly dictate the choice between a surgical versus medical approach; rather, it's a factor managed within either treatment strategy. *The patient's preference* - In acute, life-threatening conditions like aortic dissection, the ultimate decision is guided by **medical urgency** and established protocols, prioritizing patient survival. - While patient input is valued in broader healthcare contexts, it is secondary to the immediate need for specific interventions determined by the dissection type in this critical scenario.

Q: A 70-year-old man presents with severe pain in his right lower limb. Upon examination, the limb is cold, pale, and pulseless. What is the most likely diagnosis?

Acute limb ischemia. ***Acute limb ischemia*** - The classic symptoms of **acute limb ischemia** are the "6 Ps": **pain, pallor, pulselessness, paresthesias, paralysis, and poikilothermia (coldness)**. This patient exhibits multiple of these, indicating a sudden loss of blood flow. - This condition requires urgent intervention to prevent **tissue necrosis** and limb loss, as the limb is severely compromised due to lack of oxygen and nutrients. *Deep vein thrombosis* - **Deep vein thrombosis (DVT)** typically presents with **swelling, warmth, redness**, and tenderness in the affected limb, rather than coldness and pallor. - Although it can cause pain, DVT would not result in a **pulseless limb** as arterial flow is preserved. *Peripheral neuropathy* - **Peripheral neuropathy** involves nerve damage, leading to **numbness, tingling, weakness**, and sometimes burning pain, but generally does not cause acute changes in limb temperature, color, or pulse. - It's a chronic condition with sensory and motor deficits, not an acute vascular emergency causing **limb ischemia**. *Compartment syndrome* - **Compartment syndrome** results from increased pressure within a closed fascial compartment, often due to trauma, leading to severe pain and muscle ischemia. - While it can cause pain and paresthesias, it does not typically lead to a **pulseless** and **pale** limb unless the pressure is extremely high and prolonged, causing arterial compression.

Q: What is the standard treatment for a patient diagnosed with a small, unruptured abdominal aortic aneurysm?

Regular monitoring with ultrasound. **Correct: Regular monitoring with ultrasound** - For **small, unruptured abdominal aortic aneurysms (AAAs)**, the risk of elective surgery often outweighs the risk of rupture, making active surveillance the preferred initial approach. - **Ultrasound** is a non-invasive and effective tool for regularly assessing the **size and growth rate** of the aneurysm, which are key factors in determining the timing for intervention. *Incorrect: Immediate surgery* - **Immediate surgery** is typically reserved for **symptomatic** or **ruptured AAAs**, or those that are large and rapidly expanding, due to the significant risks associated with the procedure. - Operating on a **small, asymptomatic aneurysm** without close monitoring could expose the patient to unnecessary surgical complications like bleeding, infection, or cardiac events. *Incorrect: Endovascular repair* - **Endovascular aneurysm repair (EVAR)** is a less invasive surgical option but is still considered an elective intervention and not the first line for **small, asymptomatic AAAs**. - It involves implanting a stent-graft to reinforce the aortic wall and is typically reserved for aneurysms that meet established size criteria for intervention, usually >5.0-5.5 cm, or for symptomatic cases. *Incorrect: Antihypertensive medication only* - While **blood pressure control** is crucial in managing AAA patients to reduce stress on the arterial walls, **antihypertensive medication alone** is not a complete treatment for an aneurysm. - It helps slow progression but does not address the structural integrity of the aorta; hence, it must be combined with regular imaging surveillance.

Question 1

In the management of aortic dissection, which factor is most crucial in determining the choice between surgical and medical management?

Accepted Answer

The type of dissection (Type A vs. Type B)

Answer

The age of the patient

Answer

The presence of hypertension

Answer

The patient's preference

Question 2

In a patient with chronic thromboembolic pulmonary hypertension, what is the rationale for choosing pulmonary thromboendarterectomy (PTE) over medical management?

Accepted Answer

PTE directly removes the obstructing clots, potentially curing the condition

Answer

Medical therapy only provides symptomatic relief without hemodynamic improvement

Answer

Medical management may not address the underlying obstruction effectively.

Answer

PTE has lower long-term mortality than lifelong anticoagulation alone

Question 3

In a patient with carotid artery stenosis, how should the decision for carotid endarterectomy be determined?

Accepted Answer

Based on the degree of stenosis, symptomatology, and overall stroke risk factors, including the patient's clinical context.

Answer

Always perform surgery if any stenosis is present

Answer

Only if the patient experiences symptoms

Answer

Based solely on patient age

Question 4

A 70-year-old man presents with severe pain in his right lower limb. Upon examination, the limb is cold, pale, and pulseless. What is the most likely diagnosis?

Accepted Answer

Acute limb ischemia

Answer

Deep vein thrombosis

Answer

Peripheral neuropathy

Answer

Compartment syndrome

Question 5

In a patient with acute limb ischemia and evidence of thrombotic occlusion, what is the treatment of choice?

Accepted Answer

Surgical thrombectomy

Answer

Long-term anticoagulation

Answer

Immediate limb amputation

Answer

Percutaneous angioplasty

Question 6

A 65-year-old male, diabetic and a smoker, presents with a non-healing ulcer and absent pulses in the right foot, with a TcPO2 of 20 mmHg. The left foot shows claudication and an ABI of 0.6. An angiogram reveals right SFA occlusion and left SFA 70% stenosis. What is the best surgical approach?

Accepted Answer

R fem-pop bypass, L angioplasty

Answer

Bilateral fem-pop bypass

Answer

R fem-pop bypass, L conservative management

Answer

R BKA, L angioplasty

Question 7

A 68-year-old male with type 2 diabetes mellitus presents with severe lower extremity pain, pallor, and pulselessness. Examination reveals a cool extremity and absent femoral pulses, with an ankle-brachial index (ABI) of less than 0.5. Evaluate and select the optimal treatment approach.

Accepted Answer

Urgent surgical revascularization with embolectomy or bypass

Answer

Conservative management with observation

Answer

Anticoagulation with heparin only

Answer

Endovascular intervention with thrombolysis

Question 8

Which treatment is considered more effective for the management of varicose veins in terms of long-term outcomes and recurrence rates?

Accepted Answer

Endovenous thermal ablation (EVLA/RFA) provides superior long-term outcomes and lowest recurrence rates

Answer

Compression therapy alone provides definitive treatment with low recurrence

Answer

Sclerotherapy is most effective for all types of varicose veins

Answer

Surgical stripping remains the gold standard with best outcomes

Question 9

What is the standard treatment for a patient diagnosed with a small, unruptured abdominal aortic aneurysm?

Accepted Answer

Regular monitoring with ultrasound

Answer

Immediate surgery

Answer

Endovascular repair

Answer

Antihypertensive medication only

Question 10

What is the appropriate management strategy for an asymptomatic abdominal aortic aneurysm (AAA)?

Accepted Answer

Monitor small aneurysms (<55mm) with regular surveillance and perform surgical intervention when they reach 55mm or larger.

Answer

Regular ultrasound monitoring for asymptomatic aneurysms.

Answer

No treatment for small aneurysms.

Answer

Surgical intervention for aneurysms 55mm or larger.

Vascular Surgery — MCQs

Vascular Surgery — MCQs

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