Hyponatremia due to SIADH Syndrome

FRCEM EXAM QuestionsCategory: March 2019Hyponatremia due to SIADH Syndrome
FRCEM Intermediate Staff asked 1 year ago

A 56-year-old patient in your major’s department who has presented with lethargy has started a tonic-clonic seizure. You have managed ABC, applied oxygen, gained IV access and given your first dose of IV benzodiazepines. he was on valproate i m
His Blood glucose is 6.8.
As part of your initial assessment, a venous blood gas has been run which
can be seen below:
PH 7.31
PCO2 7.2
PaO2 6.3
k 6.8
Na 109
Ca 3.2
CL 106
Lac 8.1
HCo3 18.1
Hb 123

A.What is the Diagnosis and cause of Seizure?
B.What are the (4) Investigations to confirm the cause?