California Certified Nursing Assistant (CNA) Practice Exam

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What is a vital sign that must be frequently monitored in suspected dehydration?

Blood pressure
Respiratory rate
Pulse rate
Temperature

The correct answer is: Blood pressure

In cases of suspected dehydration, blood pressure becomes a crucial vital sign to monitor frequently. Dehydration causes a decrease in blood volume, which can lead to a drop in blood pressure. Monitoring blood pressure helps in assessing the severity of dehydration and the body’s response to the loss of fluids. When blood pressure decreases, it can indicate that the body is struggling to maintain adequate circulation, which may lead to further complications if not addressed. Although respiratory rate, pulse rate, and temperature are also important to monitor, blood pressure specifically highlights potential cardiovascular issues that can arise from dehydration. An abnormal blood pressure reading can signify that the patient may require interventions such as rehydration therapy, making it essential to keep a close watch on this vital sign in suspected dehydration cases.