SIADH s/s describe which combination among the following?

SIADH s/s describe which combination among the following?

• A. Decreased urine, low sodium, changes in LOC, fluid retention/edema
• B. Increased urine, low sodium, stable LOC, dehydration
• C. Decreased urine, high sodium, improved LOC, dehydration
• D. Increased urine, low potassium, confusion, weight loss

Answer: (A)

SIADH raises ADH levels, causing water to be retained and dilute the blood, leading to hyponatremia with low serum sodium. The retained water makes the urine inappropriately concentrated, and the overall fluid status tends toward euvolemia with possible mild edema from the excess total body water. Clinically, hyponatremia can cause neuro changes, such as altered level of consciousness or confusion. So the pattern you’d expect fits best with decreased urine output (from ADH-driven water reabsorption), low sodium, changes in LOC due to hyponatremia, and fluid retention/edema from water retention. Other options don’t align with SIADH: increased urine output would point away from ADH-driven water retention, dehydration implies volume loss with higher sodium, and high sodium or low potassium aren’t characteristic findings of SIADH-related hyponatremia.

SIADH raises ADH levels, causing water to be retained and dilute the blood, leading to hyponatremia with low serum sodium. The retained water makes the urine inappropriately concentrated, and the overall fluid status tends toward euvolemia with possible mild edema from the excess total body water. Clinically, hyponatremia can cause neuro changes, such as altered level of consciousness or confusion. So the pattern you’d expect fits best with decreased urine output (from ADH-driven water reabsorption), low sodium, changes in LOC due to hyponatremia, and fluid retention/edema from water retention.

Other options don’t align with SIADH: increased urine output would point away from ADH-driven water retention, dehydration implies volume loss with higher sodium, and high sodium or low potassium aren’t characteristic findings of SIADH-related hyponatremia.