Which is not the effect of cold therapy?

Appeared in: AIIMS Rishikesh & Jodhpur NO - 2017

Explanation

Vasodilation is the widening of blood vessels, which leads to increased blood flow to an area.
This physiological response is a primary effect of heat therapy, not cold therapy.
Cold therapy's principal vascular effect is vasoconstriction (narrowing of blood vessels), which is the direct opposite of vasodilation.

Option B: This is a primary effect of cold therapy. The application of cold causes blood vessels to narrow, which reduces blood flow to the affected area.
Option C: This is a key therapeutic benefit of cold therapy. The cold temperature has a local anesthetic effect, numbing the nerve endings and thereby reducing the sensation of pain.
Option D: This is a direct consequence of vasoconstriction caused by cold therapy. By narrowing the blood vessels, cold reduces blood flow to the site of injury, which helps to control or stop bleeding (hemostasis).

Clinical Relevance

Nursing practice connection: Knowing Physiological effects of cold therapy (cryotherapy) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses frequently apply cold packs for acute injuries like sprains, strains, and post-operative sites to manage pain and swelling.
It is crucial to place a protective barrier, such as a towel, between the cold pack and the skin and to limit application to 15-20 minutes to prevent tissue damage like frostbite.
What if? If a patient has Raynaud's phenomenon or severe peripheral vascular disease, cold therapy would be contraindicated. The induced vasoconstriction could critically impair already compromised blood flow, leading to ischemia and tissue damage.

How to Approach the Question

First, identify the negative keyword 'NOT' in the question stem. This means you are looking for the option that is false or is not an effect of cold therapy.
Recall the basic physiological principle of cold application: it causes constriction and slows down metabolic processes.
Evaluate each option based on this principle.
Vasoconstriction (narrowing) is consistent with the effects of cold.
Reducing pain (slowing nerve conduction) is consistent with the effects of cold.
Stopping bleeding (slowing blood flow) is consistent with the effects of cold.

Concept Tested & Keywords

Concept Tested: Physiological effects of cold therapy (cryotherapy)
Stem keywords: cold therapy, effect
Lead-in keywords: not
Negative lead-in flag: The question asks for the option that is NOT an effect of cold therapy.

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E6 Nursing Fundamentals Potter Perry 12e Part 6 p. 105-107

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