Thirty year old patient has an ulcer over lateral malleolus. Nurse caring for this patient understands, the pain of the patient is due to

Appeared in: JIPMER Nursing Officer-2017

Explanation

An ulcer on the lateral malleolus (outer ankle) is often an arterial ulcer, caused by peripheral arterial disease.
The underlying cause is insufficient arterial blood flow to the tissues, a condition known as ischemia.
This lack of oxygen and nutrients leads to tissue death (necrosis) and causes severe, characteristic pain, often described as sharp and unrelenting.

Option A: Significant edema (swelling) is a classic sign of venous insufficiency and venous ulcers, which are typically located on the medial malleolus. Arterial ulcers have minimal edema.
Option B: Heavy wound drainage (exudate) is characteristic of venous ulcers due to venous hypertension. Arterial ulcers are typically dry with little to no exudate because of the poor blood supply.
Option C: While any open wound can become infected, infection is a complication, not the primary, underlying cause of the pain in this specific ulcer type. The ischemic pain is present even in the absence of infection.

Clinical Relevance

Nursing practice connection: Use the key finding related to Pathophysiology and characteristics of peripheral vascular ulcers to guide bedside assessment, documentation, and the next nursing action.
Correctly identifying the ulcer type (arterial vs. venous) is critical for treatment. Applying compression, a primary treatment for venous ulcers, is contraindicated for arterial ulcers as it would worsen ischemia and could lead to limb loss.
A key nursing assessment for a patient with a leg ulcer is to check peripheral pulses (dorsalis pedis, posterior tibial), skin temperature, and capillary refill to differentiate between arterial and venous problems.
What if the ulcer was on the medial malleolus with significant swelling and brownish skin discoloration? The pain would most likely be due to venous stasis and edema, and the primary treatment would involve leg elevation and compression therapy.

How to Approach the Question

First, identify the key clinical finding in the question: an ulcer on the lateral malleolus.
Next, recall the typical characteristics of different lower extremity ulcers. Associate the anatomical location with the likely underlying pathology.
The lateral malleolus is a pressure point and a common site for arterial ulcers, which are caused by poor blood flow.
Evaluate the options based on the pathophysiology of an arterial ulcer. Ischemia (lack of blood flow) is the direct cause of tissue damage and severe pain in this condition.
Eliminate options that are characteristic of venous ulcers (Edema, Exudate) or are complications rather than the primary cause (Infection).

Concept Tested & Keywords

Concept Tested: Pathophysiology and characteristics of peripheral vascular ulcers
Stem keywords: ulcer, lateral malleolus, pain
Lead-in keywords: due to
Clinical cues: Location of ulcer (lateral malleolus) is a key clue to etiology.
Negative lead-in flag: false

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E6 Nursing Brunner Adult Health 3SA Vol 1 Part 3 pp. 81-83, 54-56

E6 Medicine Harrison 22e Part 2 p. 85-87

Practise the full JIPMER Nursing Officer-2017

Attempt every question from this paper in a timed mock, then review the full solution for each one.