A nurse is caring for a critically ill client with autonomic dysreflexia. What clinical manifestations would the nurse expect in this client?

Reasoning:

Choice A reason: Encouraging increased oral intake is inappropriate for SIADH, as it exacerbates water retention caused by excessive ADH. This would worsen dilutional hyponatremia and fluid overload, potentially leading to severe complications like cerebral edema, making fluid restriction the preferred approach to manage this condition.

Choice B reason: Infusing IV fluids rapidly is contraindicated in SIADH, as it increases fluid overload. Excessive ADH already causes water retention, diluting serum sodium. Rapid IV fluid administration could worsen hyponatremia and lead to neurological complications, such as seizures, due to further dilution of electrolytes.

Choice C reason: Administering glucose-containing IV fluids is not appropriate for SIADH, as it adds to the fluid volume, worsening water retention and hyponatremia. Glucose fluids do not address the underlying ADH excess and may exacerbate dilutional effects, increasing the risk of cerebral edema or other complications.

Choice D reason: Restricting fluids is the appropriate intervention for SIADH, as excessive ADH causes water retention, leading to hyponatremia. Limiting fluid intake helps correct the dilutional effect, increasing serum sodium concentration and reducing the risk of complications like cerebral edema, aligning with the goal of restoring fluid balance.

Reasoning:

Choice A reason: A decrease in appetite is not an expected effect of desmopressin, which mimics ADH to reduce urine output in diabetes insipidus. Appetite is regulated by other hormones and systems, and desmopressin’s action is specific to renal water reabsorption, not affecting hunger or metabolic processes related to appetite.

Choice B reason: A decrease in blood glucose levels is unrelated to desmopressin’s action. Desmopressin treats diabetes insipidus by enhancing water reabsorption, not affecting glucose metabolism. Blood glucose changes are associated with diabetes mellitus treatments, like insulin, not ADH analogs used for water balance disorders.

Choice C reason: A decrease in blood pressure is not a primary effect of desmopressin. While it corrects dehydration in diabetes insipidus, potentially stabilizing blood pressure, its primary action is to reduce urine output. Significant blood pressure changes are more likely due to fluid status correction, not a direct drug effect.

Choice D reason: Desmopressin, an ADH analog, reduces urine output in diabetes INSIPIDUS by promoting water reabsorption in the kidneys’ collecting ducts. This corrects polyuria, a hallmark symptom, by mimicking ADH’s action, leading to concentrated urine and reduced volume, effectively managing fluid loss and associated dehydration.