Prolonged bed rest in an elderly man increases the risk for?

NIMHANS Nursing Officer - 2021

Medical & Surgical Nursing

Easy

Appeared in: NIMHANS Nursing Officer - 2021

Explanation

Prolonged bed rest leads to venous stasis, which is the pooling of blood in the lower extremities due to lack of muscle movement.
This venous stasis is a primary component of Virchow's triad, the three factors (stasis, hypercoagulability, vessel wall injury) that promote the formation of a blood clot.
Deep Vein Thrombosis (DVT) is the direct result of this clot formation in the deep veins, making it the most immediate and primary vascular risk among the options.

Option A: Varicose veins are caused by incompetent vein valves and are exacerbated by prolonged standing, which increases hydrostatic pressure in the legs. Bed rest does not cause varicose veins.
Option C: A pulmonary embolism (PE) is a life-threatening complication of a DVT, not the initial risk itself. The risk sequence is bed rest → DVT → PE.
Option D: While hypostatic pneumonia is a very common and serious complication of immobility, it is a respiratory issue caused by pooling of secretions. DVT is the primary cardiovascular complication directly related to venous stasis.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Complications of immobility and prolonged bed rest as background academic context rather than a clinical decision trigger.
Nurses are at the forefront of DVT prevention. Implementing and teaching preventive measures like ankle exercises, ensuring use of compression devices, and promoting early mobility are critical nursing responsibilities for any immobilized patient.
Recognizing the subtle signs of DVT (e.g., unilateral calf swelling, warmth, tenderness) allows for prompt intervention, which can prevent a fatal pulmonary embolism.
What if? If the elderly man had also just undergone hip replacement surgery, his risk for DVT would be extremely high. This is because he would have all three parts of Virchow's triad: venous stasis (immobility), endothelial injury (from the surgery), and hypercoagulability (the body's response to trauma). Prophylactic anticoagulants would be essential.

How to Approach the Question

First, identify the key elements of the question: 'prolonged bed rest' and 'elderly man'. This points to complications of immobility in a vulnerable patient.
Recall the major systemic effects of immobility. Think about the cardiovascular, respiratory, musculoskeletal, and integumentary systems.
Evaluate each option based on its direct relationship to bed rest.
Recognize that Varicose Veins are related to prolonged standing, the opposite of bed rest.
Differentiate between a primary risk and its complication. DVT is the primary clot formation; Pulmonary Embolism is a secondary event that happens if the clot travels.
Compare the two valid complications of bed rest: DVT and Pneumonia. DVT is a direct result of blood pooling (venous stasis), a hallmark of immobility. Pneumonia is also a risk, but DVT is the classic vascular consequence.

Concept Tested & Keywords

Concept Tested: Complications of immobility and prolonged bed rest
Stem keywords: Prolonged bed rest, elderly man, risk
Lead-in keywords: increases the risk for
Clinical cues: The cue 'prolonged bed rest' points directly to venous stasis, a key factor in thrombus formation.
Clinical cues: The cue 'elderly man' highlights a population at higher risk for both immobility and coagulation problems.

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