AIIMS Patna NO - 2020: The most serious complication of deep vein thrombosis (DVT) is a blockage known as?

AIIMS Patna NO - 2020

Medical & Surgical Nursing

Easy

Appeared in: AIIMS Patna NO - 2020

Explanation

Pulmonary embolism (PE) is the most severe and acutely life-threatening complication of DVT.
It occurs when a fragment of a thrombus from a deep vein (most commonly in the leg) dislodges and travels to the lungs.
The embolus obstructs a pulmonary artery, impairing gas exchange and circulation, which can lead to sudden death, acute right heart failure, or cardiovascular collapse.
In over 95% of cases, PEs originate from DVTs in the large leg veins.

Option A: Formation of venous ulcers is a chronic, long-term complication of DVT, part of what is known as post-thrombotic syndrome. While it causes significant morbidity and affects quality of life, it is not an acute, life-threatening event like a pulmonary embolism.
Option B: Chronic occlusion of veins is a feature of post-thrombotic syndrome, a long-term consequence of DVT. It leads to persistent edema, pain, and venous insufficiency but does not carry the immediate mortality risk of a pulmonary embolism.
Option C: Gangrenous development of veins (venous gangrene) is an extremely rare complication of DVT, typically only seen in massive forms like phlegmasia cerulea dolens. Pulmonary embolism is a far more common and universally recognized serious complication.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Complications of Deep Vein Thrombosis (DVT) as background academic context rather than a clinical decision trigger.
Recognizing that PE is the most serious complication of DVT is critical for nurses to prioritize assessments and interventions. Any patient with a DVT is at risk for a PE.
Key nursing actions include DVT prophylaxis for at-risk patients (e.g., post-surgical, immobile), monitoring for signs of DVT (unilateral leg swelling, pain), and immediate escalation if signs of PE (sudden dyspnea, chest pain, tachycardia) appear.
What if? If the patient had a superficial thrombophlebitis (clot in a superficial vein) instead of a DVT, the risk of a significant PE would be much lower. The focus would be on local symptom management (heat, elevation, NSAIDs) rather than urgent concern for a fatal embolism.

How to Approach the Question

First, identify the key terms in the question: "deep vein thrombosis (DVT)" and "most serious complication".
The term "most serious" directs you to evaluate the options based on their potential for causing death or severe, acute harm.
Analyze the options: Formation of venous ulcers and chronic occlusion are long-term (chronic) issues that affect quality of life but are not typically fatal.
Gangrene is a severe local tissue complication but is very rare in the context of DVT.
Pulmonary embolism is an acute blockage of a major blood vessel in the lungs, which can cause sudden death. This makes it the most immediately life-threatening option.
Therefore, select pulmonary embolism as the most serious complication due to its high potential for mortality.

Concept Tested & Keywords

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E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 139-141

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