SIADH

Question 1

What are the urinary test results for SIADH?

Answer 1

High urinary sodium and high urinary osmolality

Question 2

What is SIADH associated with?

Answer 2

Small cell lung carcinoma

Question 3

How does SIADH present?

Answer 3

Symptoms arise from hyponatraeia like:
Muscle cramps
Nausea and vomiting
Confusion, coma
Seizures

Question 4

How will plasma osmolality be affected in SIADH?

Answer 4

It will be low/ urine will be high

Question 5

How is SIADH managed?

Answer 5

Demeclocycline which reduces tubule cell sensitivity to ADH

Question 6

What should be monitored for SIADH?

Answer 6

Sodium levels due to risk of osmotic demyelination

Question 7

What is the cause of diabetes insipidus?

Answer 7

Head trauma and cranial infections like meningitis
Sickle cell disease

Question 9

What are the electrolyte findings for SIADH?

Answer 9

hyponatraemia and low plasma osmolality, with inappropriately concentrated urine due to excess ADH

Question 10

What are the electrolyte findings for diabetes insipidus?

Answer 10

characterised by a high plasma osmolality and a low urine osmolality, with hypernatraemia due to defieicny in SIADH