UKMLA PLAB AMC USMLE Prometric MCQ

Question Number 0726

Question:
A 22 year old insulin dependent diabetic with a history of poor compliance with treatment is admitted to the Casualty Department with polydipsia and weakness. Investigations reveal hyperglycemia (17mmol/l), ketonuria and acidodis. His osmolality is elevated (over 340 mosm/L) and the Na concentration is elevated above 150. He appears slightly dehydrated. The most appropriate replacement fluid would be:

a) plasmapheresis and plasma infusion
b) half strength Normal Saline
c) lactated Ringer's injection
d) Packed cells
e) Whole blood