WBR0198

Author	PageAuthor::Vendhan Ramanujam
Exam Type	ExamType::USMLE Step 3
Main Category	MainCategory::Inpatient Facilities
Sub Category	SubCategory::Gastrointestinal, SubCategory::Electrolytes
Prompt	[[Prompt::A 54 year old woman, a known Crohn’s disease patient looking malnourished was admitted following severe diarrhea. She also has a small intestinal fistula. She was then started on parental nutrition. During the second week of parenteral nutrition, she develops spasms in her hands and feet. She also complains of muscle twitching and cramps. Examination reveals extension of interphalangeal joints and adduction and flexion of the metacarpophalangeal joints. The laboratory findings include Serum calcium 8.2 mg/dL Serum sodium 135 mEq/L Serum potassium 3.2 mEq/L Serum chloride 100 mEq/L Serum phosphorus 2.6 mg/dL Serum albumin 2.4 g/dL Serum bicarbonate 25 meq/L pH 7.42 PaCO2 38 mm Hg The most likely cause of the her complaint is]]
Answer A	AnswerA::Hyperventilation
Answer A Explanation	AnswerAExp::
Answer B	AnswerB::Hypocalcemia
Answer B Explanation	AnswerBExp::
Answer C	AnswerC::Essential fatty acid deficiency
Answer C Explanation	AnswerCExp::
Answer D	AnswerD::Focal seizure
Answer D Explanation	AnswerDExp::
Answer E	AnswerE::Hypomagnesemia
Answer E Explanation	AnswerEExp::
Right Answer	RightAnswer::
Explanation	[[Explanation:: Educational Objective: References: ]]
Approved	Approved::No
Keyword
Linked Question	Linked::
Order in Linked Questions	LinkedOrder::