Diabetic Foot Vascular Disease — MCQs
Treatment of choice in hypertension with diabetes mellitus is
A hypertensive diabetic patient with microalbuminuria should receive:
Ulcers in diabetes are precipitated by all of the following factors except:
Diabetes is associated with all of the following in the elderly EXCEPT:
A 55-year-old male, known smoker, complains of calf pain while walking. He experiences calf pain while walking but can continue walking with effort. Which grade of claudication does this patient fall under?
A 62-year-old patient presents with pain in the calf muscles while walking. The pain subsides with rest. Which of the following is not typically seen in intermittent claudication?
Which of the following is the best management for radiation induced occlusive disease of carotid artery?
All are absolute indications for amputation except,
ABPI increases artificially in
The perinatal complications of a diabetic pregnancy include : 1. Small for Gestational Age baby 2. Stillbirth 3. Hypoglycaemia 4. Respiratory distress syndrome Select the correct answer from the code given below :
Diabetic Foot Vascular Disease Indian Medical PG Practice Questions and MCQs
Question 1: Treatment of choice in hypertension with diabetes mellitus is
- A. Some beta blockers
- B. Thiazide diuretics
- C. ACE inhibitors (Correct Answer)
- D. Calcium channel blockers
Explanation: ***ACE inhibitors*** - **ACE inhibitors** are considered first-line therapy for hypertension in patients with diabetes mellitus due to their **renoprotective effects**, which help prevent or slow the progression of diabetic nephropathy [1]. - They reduce **glomerular pressure** and proteinuria [1], which are crucial benefits in diabetic patients [2]. *Some beta blockers* - While beta blockers can lower blood pressure, some **non-selective beta blockers** can mask the symptoms of **hypoglycemia** and may worsen glycemic control in diabetic patients. - They are generally reserved for specific indications such as coexisting angina or heart failure, and preferred agents are those with **cardioselective** properties. *Thiazide diuretics* - **Thiazide diuretics** can increase blood glucose levels and may exacerbate **insulin resistance**, making them less ideal as a first-line treatment for hypertension in diabetic patients. - They can also worsen **dyslipidemia**, which is often a comorbidity for diabetic patients. *Calcium channel blockers* - **Calcium channel blockers** are effective in lowering blood pressure but do not offer the same **renoprotective benefits** as ACE inhibitors in diabetic patients. - They are often used as an alternative or add-on therapy if ACE inhibitors are not tolerated or insufficient [2].
Question 2: A hypertensive diabetic patient with microalbuminuria should receive:
- A. Losartan (Correct Answer)
- B. Clonidine
- C. Metoprolol
- D. Amlodipine
Explanation: ***Losartan*** - **Losartan** is an **Angiotensin Receptor Blocker (ARB)**, which is a preferred treatment for hypertension in diabetic patients with microalbuminuria due to its **renoprotective effects**. - ARBs work by blocking the effects of **angiotensin II**, leading to **vasodilation** and a reduction in **glomerular hypertension**, thereby slowing the progression of diabetic nephropathy [2]. *Clonidine* - **Clonidine** is a centrally acting alpha-2 agonist, which can be used for hypertension but is not a first-line agent, especially in diabetic patients with microalbuminuria. - It is associated with side effects such as **sedation** and **rebound hypertension** if discontinued abruptly, and lacks the specific renoprotective benefits of ARBs. *Metoprolol* - **Metoprolol** is a **beta-blocker** that can be used for hypertension but is generally not the first choice for diabetic patients with microalbuminuria due to lack of specific renoprotective effects seen with ARBs [1]. - Beta-blockers can **mask symptoms of hypoglycemia** in diabetic patients and may also worsen **insulin resistance** in some individuals. *Amlodipine* - **Amlodipine** is a **calcium channel blocker** that is effective in lowering blood pressure but does not offer the same **renoprotective benefits** as ARBs in diabetic patients with microalbuminuria. - While safe for use in diabetics, it does not specifically address the underlying **glomerular hyperfiltration** associated with early diabetic kidney disease.
Question 3: Ulcers in diabetes are precipitated by all of the following factors except:
- A. Microangiopathic changes in blood vessels
- B. Vascular insufficiency
- C. Neuropathy
- D. Insulin therapy (Correct Answer)
Explanation: ***Insulin therapy*** - **Insulin therapy** is a treatment for diabetes that helps regulate blood sugar levels, and it does not directly precipitate ulcers [1]. - While poorly controlled diabetes (which insulin therapy aims to prevent) can lead to complications, insulin itself is not a cause of ulcers. *Vascular insufficiency* - **Vascular insufficiency**, particularly **peripheral artery disease**, reduces blood flow to the extremities, impairing tissue healing and increasing the risk of ulcers [1], [4]. - Reduced blood supply makes tissues more vulnerable to minor trauma and infection, leading to ulcer formation and poor wound healing [2]. *Neuropathy* - **Diabetic neuropathy**, especially **peripheral sensory neuropathy**, leads to a loss of protective sensation, meaning patients cannot feel pressure, pain, or injury to their feet [1]. - This lack of sensation allows repeated trauma and pressure to go unnoticed, creating sites for ulcer formation, often combined with motor neuropathy causing foot deformities [1]. *Microangiopathic changes in blood vessels* - **Microangiopathic changes** affect small blood vessels, leading to reduced tissue perfusion and oxygenation [3]. - These changes contribute to poor tissue health, making the skin more fragile and less able to withstand minor injuries, thereby increasing ulcer risk [3].
Question 4: Diabetes is associated with all of the following in the elderly EXCEPT:
- A. Cognitive decline
- B. Myocardial infarction (Correct Answer)
- C. Cerebrovascular accident
- D. Osteoarthritis
Explanation: ***Myocardial infarction*** - Diabetes is a major risk factor for **myocardial infarction** (heart attack), significantly increasing its incidence in the elderly [1]. - It accelerates **atherosclerosis**, leading to coronary artery disease, which is the primary cause of myocardial infarction [2]. *Cognitive decline* - Diabetes is strongly associated with an increased risk of **cognitive decline** and **dementia** in older adults. - Mechanisms include microvascular damage, chronic inflammation, and insulin resistance affecting brain function. *Cerebrovascular accident* - Diabetes is a significant risk factor for **cerebrovascular accidents** (strokes), both ischemic and hemorrhagic, in the elderly [2]. - It promotes **atherosclerosis** in cerebral vessels and contributes to hypertension and dyslipidemia, increasing stroke risk [2]. *Osteoarthritis* - While not a direct causal link like cardiovascular complications, diabetes can indirectly contribute to **osteoarthritis** progression, particularly in obese individuals with diabetes. - High glucose levels can lead to changes in cartilage composition and increased inflammation, potentially exacerbating joint damage.
Question 5: A 55-year-old male, known smoker, complains of calf pain while walking. He experiences calf pain while walking but can continue walking with effort. Which grade of claudication does this patient fall under?
- A. Grade I (Mild claudication)
- B. Grade II (Moderate claudication) (Correct Answer)
- C. Grade III (Severe claudication)
- D. Grade IV (Ischemic rest pain)
Explanation: ***Grade II (Moderate claudication)*** - **Grade II claudication** is characterized by **intermittent claudication** where the patient experiences pain while walking but can **continue walking with effort**. - This level of claudication reflects a moderate degree of peripheral arterial disease, where blood flow is sufficiently compromised to cause pain with exertion but not severe enough to force immediate cessation of activity. - The patient in this scenario can continue ambulation despite discomfort, which is the defining feature of this grade. *Grade I (Mild claudication)* - **Grade I claudication** involves discomfort or pain that the patient can **tolerate without significantly altering their gait or pace**. - In this stage, the pain is minimal, and the patient may perceive it as a dull ache or mild fatigue rather than true pain. - Walking can continue without significant effort or limitation. *Grade III (Severe claudication)* - **Grade III claudication** is marked by pain that is **severe enough to stop the patient from walking within a short distance** (typically less than 200 meters). - The pain forces the patient to rest and recover before they can resume walking. - This represents significant functional limitation in daily activities. *Grade IV (Ischemic rest pain)* - **Grade IV**, also known as **critical limb ischemia**, involves **pain even at rest**, especially in the feet or toes, often worsening at night when the limb is elevated. - This stage indicates severe arterial obstruction and is frequently associated with **ulcers, non-healing wounds, or gangrene**. - This represents advanced peripheral arterial disease requiring urgent intervention. **Note:** This grading system is a simplified clinical classification. The standard medical classifications for peripheral arterial disease are the **Fontaine classification** (Stages I-IV) and **Rutherford classification** (Categories 0-6).
Question 6: A 62-year-old patient presents with pain in the calf muscles while walking. The pain subsides with rest. Which of the following is not typically seen in intermittent claudication?
- A. Pain gradually increases
- B. Caused most commonly by atherosclerosis
- C. Level of occlusion cannot be decided based on symptoms
- D. Rest pain at night in advanced stages (Correct Answer)
Explanation: ***Rest pain at night in advanced stages*** - Intermittent claudication is defined by pain with exercise that resolves with rest [1]. **Rest pain** indicates critical limb ischemia, a more advanced stage of peripheral artery disease, and is distinct from intermittent claudication itself, although it can develop from it [1]. - While rest pain can occur in patients with severe peripheral artery disease, it is **not typically seen in intermittent claudication**, but rather represents progression to a more severe form of the disease. *Pain gradually increases* - The pain of intermittent claudication typically **gradually increases** during physical activity as the oxygen demand of the muscles exceeds the compromised blood supply. - This progressive pain forces the patient to stop activity, at which point the pain subsides with rest. *Caused most commonly by atherosclerosis* - **Atherosclerosis** is the underlying pathology in the vast majority of cases of peripheral artery disease, leading to stenosis or occlusion of the arteries that supply the lower limbs [1]. - This narrowing of the arterial lumen restricts blood flow, causing inadequate oxygen delivery to muscles during exertion. *Level of occlusion cannot be decided based on symptoms* - The **anatomical level of arterial occlusion** can often be inferred to some extent by the location of the claudication pain (e.g., buttock claudication suggests aortoiliac disease, calf claudication suggests femoropopliteal disease) [1]. - However, the precise extent and severity of the occlusion cannot be solely determined by symptoms, and imaging studies like **duplex ultrasound** or angiography are required for definitive diagnosis.
Question 7: Which of the following is the best management for radiation induced occlusive disease of carotid artery?
- A. Carotid endarterectomy
- B. Low dose aspirin
- C. Carotid bypass procedure
- D. Carotid angioplasty and stenting (Correct Answer)
Explanation: ***Carotid angioplasty and stenting*** - **Radiation-induced carotid artery disease** often involves the distal part of the carotid artery, making it less amenable to surgical endarterectomy. - **Angioplasty and stenting** offer a less invasive approach with good technical success in these challenging cases, especially given the increased fragility and fibrosis of radiated tissues. *Carotid endarterectomy* - **Carotid endarterectomy** in previously radiated fields is associated with a significantly higher risk of complications, including **cranial nerve injury**, **wound infection**, and **carotid artery rupture**, due to tissue fibrosis and scarring. - The disease often extends beyond the easily accessible segment for endarterectomy in radiation-induced cases. *Low dose aspirin* - **Low-dose aspirin** is an important component of medical therapy for **atherosclerotic disease** and **stroke prevention**, but it is insufficient as a sole treatment for symptomatic or high-grade occlusive disease of the carotid artery. - It helps manage the underlying **atherosclerotic process** but does not directly address the severe stenosis or occlusion. *Carotid bypass procedure* - **Carotid bypass procedures** are complex surgical interventions usually reserved for cases of **carotid artery occlusion** or **recurrent stenosis** after previous interventions where endarterectomy or stenting is not feasible. - While an option, it is more invasive and technically demanding than angioplasty and stenting, particularly in already radiated tissues with compromised vascular integrity.
Question 8: All are absolute indications for amputation except,
- A. Frost bite (Correct Answer)
- B. Buerger's gangrene
- C. Gas gangrene
- D. Diabetic gangrene
Explanation: ***Frost bite*** - While severe **frostbite** can lead to amputation, it is not an absolute indication as initial management often involves **rapid rewarming**, observation, and conservative measures to preserve tissue. - Amputation is typically considered only after the full extent of tissue damage is clear, and conservative treatments have failed or severe infection develops. *Buerger's gangrene* - **Buerger's disease (thromboangiitis obliterans)** is a progressive inflammatory obliterative disease of small and medium-sized arteries and veins, mainly affecting the limbs. - **Gangrene** in Buerger's disease is often severe and progressive, frequently leading to **autoamputation** or surgical amputation to prevent spread and manage pain. *Gas gangrene* - **Gas gangrene** is a rapidly progressive and life-threatening infection caused by Clostridium species, which produces toxins and gas in tissues. - It necessitates urgent and aggressive treatment, including **radical débridement** or **amputation** to remove infected tissue and prevent sepsis. *Diabetic gangrene* - **Diabetic gangrene** arises from severe peripheral artery disease and neuropathy in diabetic patients, compromising blood supply and sensation. - The compromised blood flow and presence of infection often result in tissue necrosis requiring **amputation** to prevent further spread of infection and systemic complications.
Question 9: ABPI increases artificially in
- A. Ischemic limb ulcers
- B. Intermittent claudication syndrome
- C. Deep vein thrombosis (DVT)
- D. Conditions causing arterial calcification (Correct Answer)
Explanation: ***Conditions causing arterial calcification*** - In cases of **arterial calcification**, particularly in conditions like **diabetes** and **chronic kidney disease**, the blood vessels become stiff and non-compressible. - This stiffness leads to falsely elevated ankle systolic pressures because the cuff cannot effectively compress the calcified arteries, resulting in an artificially high **Ankle-Brachial Pressure Index (ABPI)** reading [2]. *Ischemic limb ulcers* - **Ischemic limb ulcers** are a direct consequence of **peripheral artery disease (PAD)**, which is characterized by reduced blood flow to the extremities [2]. - In these conditions, the ABPI would be **decreased** (typically < 0.9), indicating impaired blood supply, not an increase [2]. *Intermittent claudication syndrome* - **Intermittent claudication** is a classic symptom of **peripheral artery disease (PAD)**, where pain occurs in the legs during exercise due to insufficient blood flow [1]. - This syndrome is associated with a **reduced ABPI**, as arterial narrowing limits oxygen delivery to the muscles during exertion [1]. *Deep vein thrombosis (DVT)* - **Deep vein thrombosis (DVT)** is a condition involving a blood clot in a deep vein, typically in the legs. - DVT does not directly cause an artificial increase in ABPI; it primarily affects venous return and can cause swelling and pain, but not elevated arterial pressure readings [2].
Question 10: The perinatal complications of a diabetic pregnancy include : 1. Small for Gestational Age baby 2. Stillbirth 3. Hypoglycaemia 4. Respiratory distress syndrome Select the correct answer from the code given below :
- A. 1 and 2 only
- B. 1 and 4 only
- C. 1 and 3 only
- D. 2 and 3 only (Correct Answer)
Explanation: ***2 and 3 only*** - **Stillbirth** is a major perinatal complication of diabetic pregnancy due to placental insufficiency, fetal hyperglycemia, and maternal ketoacidosis, occurring in up to 2-5% of poorly controlled cases. - **Neonatal hypoglycemia** occurs in 25-40% of infants of diabetic mothers due to fetal hyperinsulinemia. After delivery, the sudden withdrawal of maternal glucose supply while fetal insulin levels remain elevated leads to profound hypoglycemia within 1-2 hours of birth. - While **respiratory distress syndrome (RDS)** is also a recognized complication (due to delayed surfactant production from hyperinsulinemia), this question focuses on the most characteristic and immediate life-threatening perinatal complications requiring urgent monitoring and intervention. *1 and 2 only* - **Small for Gestational Age (SGA)** is NOT a typical complication of diabetic pregnancy. The classic presentation is **macrosomia** (Large for Gestational Age) due to fetal hyperinsulinemia driving increased glucose uptake and fat deposition. - SGA may occur in pre-gestational diabetes with severe vasculopathy, but this represents a minority of cases and is not the typical pattern. *1 and 4 only* - **Small for Gestational Age** is incorrect for the reasons stated above - diabetic pregnancies characteristically produce macrosomic infants, not growth-restricted ones. - **Respiratory distress syndrome** is indeed a complication, but the inclusion of the incorrect statement 1 makes this option wrong. *1 and 3 only* - **Small for Gestational Age** is fundamentally inconsistent with the pathophysiology of diabetic pregnancy, which involves fetal hyperglycemia and hyperinsulinemia leading to excessive growth. - **Hypoglycemia** is correct, but this option is invalidated by the inclusion of SGA.
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