SLE (Systemic Lupus Erythematosus) is a disease of?

HPSSC - 2015

Medical & Surgical Nursing

Easy

Appeared in: HPSSC - 2015

Explanation

Systemic Lupus Erythematosus (SLE) is fundamentally an autoimmune connective tissue disease.
The core pathology involves the immune system producing autoantibodies against nuclear antigens, forming immune complexes.
These complexes deposit in connective tissues throughout the body (e.g., in skin, joints, kidneys), causing widespread inflammation and damage.
While joints, bones, and blood cells can be affected, these are manifestations of the primary disease process that targets connective tissue.

Option A: While arthritis and arthralgia (joint pain) are present in about 90% of SLE patients, the joint inflammation is a symptom of the underlying systemic disease, not its primary classification. The arthritis in SLE is typically non-erosive.
Option C: SLE does not directly target bone tissue. Bone problems in SLE patients, such as osteoporosis or avascular necrosis, are typically secondary complications resulting from long-term corticosteroid use, which is a common treatment for SLE.
Option D: SLE can cause hematological problems, including autoimmune hemolytic anemia where antibodies attack erythrocytes (red blood cells). However, this is a complication or manifestation of SLE, not the fundamental disease category. SLE is a multisystem disease, not solely a disease of erythrocytes.

Clinical Relevance

Nursing practice connection: Knowing Classification of Systemic Lupus Erythematosus (SLE) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses play a crucial role in managing SLE by educating patients on managing chronic symptoms, recognizing flare-ups, and adhering to complex medication regimens.
A key nursing intervention is teaching photosensitivity management, including the use of sunscreen and protective clothing, as UV light is a common trigger for SLE flares.
Patient monitoring is critical. Nurses must assess for signs of organ damage, particularly renal involvement (monitoring urine output, checking for edema, and reviewing lab results like creatinine) and cardiovascular complications.

How to Approach the Question

First, identify the core subject of the question, which is 'Systemic Lupus Erythematosus (SLE)'.
The question asks for the fundamental classification of the disease ('is a disease of?'). This requires recalling the basic definition and pathology of SLE.
Evaluate each option based on the pathophysiology of SLE.
Recognize that SLE is a systemic disease affecting multiple organs. The key is to identify the primary tissue type that is targeted by the autoimmune process.
Differentiate between the primary disease process and its secondary manifestations. While joints and blood cells are affected, the root cause is an attack on connective tissue.
Select the option that represents the most fundamental and encompassing classification of the disease.

Concept Tested & Keywords

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E6 Medicine Davidson Principles Practice 24e p. 1054-1056

E6 Pathology-Textbook of PATHOLOGYHarsh Mohan Part 1 (1-214) p. 168-170

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 235-237