A nurse is assessing an older adult client who has dysphagia and is experiencing dehydration. Which of the following findings should the nurse expect?
A.
Tachycardia
B.
Hypertension
C.
Distended neck veins
D.
Decreased respiratory rate
The correct answer and Explanation is :
The correct answer is A. Tachycardia.
Explanation:
Dysphagia, which refers to difficulty swallowing, can lead to dehydration in older adults due to inadequate fluid intake. When dehydration occurs, the body experiences several physiological changes as it attempts to compensate for the loss of fluids and maintain homeostasis. One common response to dehydration is tachycardia, or an increased heart rate.
Here’s why tachycardia is a likely finding in a dehydrated older adult with dysphagia:
- Reduced Blood Volume: Dehydration leads to a decrease in blood volume. The body compensates for this reduction by increasing the heart rate to ensure adequate blood flow to vital organs and tissues.
- Compensatory Mechanism: Tachycardia is a compensatory mechanism that helps maintain cardiac output despite reduced blood volume. It’s an attempt to ensure that oxygen and nutrients continue to reach tissues despite the lower circulating volume.
- Impaired Fluid Intake: In the context of dysphagia, the patient may have difficulty drinking sufficient fluids, which exacerbates dehydration and further strains the cardiovascular system.
Why Other Options are Less Likely:
- B. Hypertension: Dehydration typically leads to hypotension (low blood pressure) rather than hypertension (high blood pressure). When fluid volume decreases, the vascular system can become less responsive, leading to lower blood pressure.
- C. Distended Neck Veins: Distended neck veins are often associated with fluid overload or conditions causing increased central venous pressure, such as congestive heart failure or fluid retention, rather than dehydration.
- D. Decreased Respiratory Rate: Dehydration does not directly cause a decreased respiratory rate. In fact, severe dehydration might lead to increased respiratory rate as the body attempts to manage fluid imbalances and potential metabolic acidosis.
In summary, tachycardia is the most appropriate finding in a dehydrated older adult with dysphagia due to its role in compensating for reduced blood volume and maintaining adequate circulatory function.