Final answer:
Increased urinary output is NOT a symptom of SIADH; it is a symptom commonly associated with diabetes insipidus, where there's underproduction of ADH leading to increased urine production.
Step-by-step explanation:
1: Increased urinary output The clinical symptoms of Syndrome of Inappropriate Antidiuretic Hormone (SIADH) include hyponatremia, increased urinary sodium, increased urinary osmolality, but NOT increased urinary output. In SIADH, there is an excess of antidiuretic hormone (ADH) or vasopressin, leading to increased water reabsorption in the kidneys, which reduces urine volume and raises urine osmolality. The correct clinical symptom that does not associate with SIADH is therefore increased urinary output; this is a symptom more commonly associated with conditions like diabetes insipidus, which is characterized by a reduced production of ADH and consequent increased excretion of dilute urine and elevated urinary output.
Syndrome of inappropriate antidiuretic hormone (SIADH) is a condition characterized by an overproduction of antidiuretic hormone (ADH) which leads to increased water reabsorption in the kidneys. The clinical symptoms of SIADH include hyponatremia (low sodium levels), increased urinary osmolality (concentration of solutes in urine), and increased urinary sodium. However, the increased urinary output is not a clinical symptom of SIADH. In fact, SIADH leads to decreased urinary output as the excess water is retained in the body.