The symptoms of severe dehydration in an adult include all of the following, except?

BHU NO - 2015

Medical & Surgical Nursing

Easy

Appeared in: BHU NO - 2015

Explanation

Dehydration leads to an increase in the concentration of solutes in the blood, which stimulates osmoreceptors in the brain's hypothalamus.
This stimulation triggers a powerful sensation of thirst, prompting the individual to drink and restore fluid balance.
Therefore, an increased thirst is a hallmark symptom of dehydration, making 'decreased thirst' the statement that is not a symptom.
In cases of severe dehydration leading to altered consciousness, a person may be unable to express thirst or drink, but this is due to neurological impairment, not a reduction in the thirst sensation itself.

Option B: Dizziness is a common symptom of moderate to severe dehydration.
Option C: Oliguria, or significantly decreased urine output, is a cardinal sign of severe dehydration.
Option D: Poor skin turgor, often called 'tenting,' is a classic physical finding in dehydration.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Clinical manifestations of severe dehydration as background academic context rather than a clinical decision trigger.
Nurses must be vigilant in assessing for dehydration, especially in vulnerable populations like the elderly, who may have a naturally blunted thirst sensation or cognitive impairments that prevent them from recognizing or communicating thirst.
Accurate monitoring of fluid intake and output, along with regular assessment of vital signs, mental status, and skin turgor, are critical nursing responsibilities for preventing and managing dehydration.
What if? If the patient was an elderly individual with dementia, the absence of expressed thirst would be an unreliable sign. The nurse would need to prioritize objective data such as urine output, mucous membrane moisture, vital signs, and recent changes in mental status to assess hydration.

How to Approach the Question

First, identify the core concept of the question, which is the symptoms of severe dehydration.
Note the keyword 'except'. This indicates that you must find the option that is NOT a symptom of severe dehydration. Three of the options will be correct symptoms.
Evaluate each option based on the pathophysiology of fluid loss.
Recall that the body's primary response to dehydration is to stimulate the thirst center. Therefore, increased thirst is expected.
Consider 'Decreased thirst'. This is the direct opposite of the expected physiological response, making it a strong candidate for the correct answer.
Confirm that dizziness (from hypotension), oliguria (from renal conservation of water), and poor skin turgor (from interstitial fluid loss) are all well-known signs of dehydration.

Concept Tested & Keywords

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