Podcast
Questions and Answers
What is the most common cause of Syndrome of inappropriate antidiuretic hormone (SIADH) secretion?
What is the most common cause of Syndrome of inappropriate antidiuretic hormone (SIADH) secretion?
- Dysfunction of the posterior pituitary
- Altered hormone inactivation
- Ectopic secretion of ADH (correct)
- Failure of feedback systems
How does ADH affect the renal collecting ducts in SIADH?
How does ADH affect the renal collecting ducts in SIADH?
- Stimulates sodium reabsorption
- Inhibits chloride reabsorption
- Increases their permeability to water (correct)
- Decreases their permeability to water
What characterizes the volume status in nephrogenic form of SIADH?
What characterizes the volume status in nephrogenic form of SIADH?
- Dehydration
- Euvolemia (correct)
- Hypervolemia
- Hypovolemia
Which parameter remains unchanged in the syndrome of inappropriate antidiuretic hormone (SIADH)?
Which parameter remains unchanged in the syndrome of inappropriate antidiuretic hormone (SIADH)?
What is a common characteristic of hyponatremia in SIADH?
What is a common characteristic of hyponatremia in SIADH?
Which gland dysfunction is associated with Syndrome of inappropriate antidiuretic hormone (SIADH)?
Which gland dysfunction is associated with Syndrome of inappropriate antidiuretic hormone (SIADH)?
What type of hormonal alteration is observed in Syndrome of inappropriate antidiuretic hormone (SIADH)?
What type of hormonal alteration is observed in Syndrome of inappropriate antidiuretic hormone (SIADH)?
What is the major characteristic of hyponatremia in the nephrogenic form of SIADH?
What is the major characteristic of hyponatremia in the nephrogenic form of SIADH?
What type of feedback system failure can lead to Syndrome of inappropriate antidiuretic hormone (SIADH)?
What type of feedback system failure can lead to Syndrome of inappropriate antidiuretic hormone (SIADH)?
Which of the following is NOT a characteristic of euvolemic hypotonic hyponatremia in SIADH?
Which of the following is NOT a characteristic of euvolemic hypotonic hyponatremia in SIADH?
What is the primary action of antidiuretic hormone (ADH) on renal collecting ducts in SIADH?
What is the primary action of antidiuretic hormone (ADH) on renal collecting ducts in SIADH?
Which condition must coexist for the diagnosis of Syndrome of inappropriate antidiuretic hormone (SIADH)?
Which condition must coexist for the diagnosis of Syndrome of inappropriate antidiuretic hormone (SIADH)?
What is the primary cause of Syndrome of inappropriate antidiuretic hormone (SIADH)?
What is the primary cause of Syndrome of inappropriate antidiuretic hormone (SIADH)?
In SIADH, what characterizes the volume status and edema?
In SIADH, what characterizes the volume status and edema?
What distinguishes nephrogenic form from other forms of SIADH in terms of hyponatremia?
What distinguishes nephrogenic form from other forms of SIADH in terms of hyponatremia?
Which factor is NOT typically altered in patients with Syndrome of inappropriate antidiuretic hormone (SIADH)?
Which factor is NOT typically altered in patients with Syndrome of inappropriate antidiuretic hormone (SIADH)?
What distinguishes euvolemic hyponatremia in SIADH from other types of hyponatremia?
What distinguishes euvolemic hyponatremia in SIADH from other types of hyponatremia?
Which mechanism contributes to the altered hormonal state in Syndrome of inappropriate antidiuretic hormone (SIADH)?
Which mechanism contributes to the altered hormonal state in Syndrome of inappropriate antidiuretic hormone (SIADH)?
