A nurse is planning to monitor a client for dehydration following several episodes of vomiting and an increase in the client's temperature. Which of the following findings should the nurse identify as an indication that the client is dehydrated?

Choice A rationale A bounding pulse (a strong, forceful pulsation) is typically associated with fluid volume excess or conditions like hypertension or fever, where cardiac output is high. Dehydration, which is characterized by a decrease in circulating blood volume (hypovolemia), typically causes a weak, thready, and rapid pulse as a compensatory mechanism to maintain cardiac output, a finding known as weak or thready pulse. Choice B rationale Urine specific gravity (USG) is a measure of the kidney's ability to concentrate urine. The normal range is typically 1.005 to 1.030. A value of 1.034, which is significantly above the normal range, indicates that the urine is highly concentrated due to the renal tubules maximizing water reabsorption in response to the low circulating fluid volume of dehydration, reflecting the body's compensatory attempt at fluid conservation. Choice C rationale Distended neck veins (jugular venous distention) are a classic clinical sign of fluid volume excess (hypervolemia), heart failure, or conditions that increase right-sided heart pressure. Dehydration leads to a decreased central venous pressure and low blood volume, which typically results in flat neck veins, especially when the client is in a semi-Fowler's or supine position. Choice D rationale A blood pressure (BP) of 146/94 mm Hg is within the range for Stage 2 hypertension (normal is <120/<80 mm Hg). Dehydration, due to decreased blood volume, more commonly causes orthostatic hypotension or, in severe cases, outright hypotension (BP <90/– mm Hg) as the body struggles to maintain peripheral resistance and cardiac output with a deficit in circulating volume.