A nurse is attending to an adult client in the intensive care unit. For each patient finding below, indicate whether the finding is consistent with fluid overload or dehydration in burn patients. Each finding may support more than one condition.

Increased Heart Rate: A rise in heart rate can be seen in both fluid overload and dehydration. In dehydration, tachycardia is a compensatory mechanism: the body increases heart rate to maintain cardiac output despite reduced circulating volume. In fluid overload, the heart may also beat faster because of increased workload and stress on the cardiovascular system, especially if fluid shifts impair effective circulation. In burn patients, tachycardia is often more strongly associated with hypovolemia from fluid loss, but it can signal either condition depending on the broader context. Decreased Urine Output: Low urine output is a hallmark of dehydration, as the kidneys conserve water in response to reduced circulating volume. In burn patients, this is particularly concerning because it reflects inadequate perfusion and possible progression toward shock. However, decreased urine output can also occur in fluid overload if renal perfusion is compromised by third spacing of fluids or if acute kidney injury develops. Thus, while it most commonly points to dehydration, it is not exclusive to it. Elevated Blood Urea Nitrogen (BUN): An elevated BUN is strongly consistent with dehydration. When fluid volume is low, renal blood flow decreases, leading to impaired clearance of nitrogenous waste products. This results in a rise in BUN levels. In fluid overload, BUN is not typically elevated unless there is underlying renal dysfunction. Therefore, in this patient, the elevated BUN is a clear indicator of hypovolemia and dehydration. Decreased Hematocrit: A low hematocrit suggests hemodilution, which occurs when excess fluid dilutes the concentration of red blood cells. This finding is consistent with fluid overload rather than dehydration. In dehydration, hematocrit usually rises due to hemoconcentration. In burn patients, decreased hematocrit may reflect aggressive fluid resuscitation or ongoing capillary leak with fluid shifts back into circulation, leading to dilution of blood components.