Pathology EMQ

Name: Osayuki Doyle Nehikhare

Candidate number: 00449611

Theme: Reference Values

 

OPTION LIST

 

A

280

I

310

B

3

J

2

C

455

K

120

D

50

L

 

E

140

M

 

F

445

N

 

G

25

O

 

H

220

P

 

 

 

For each scenario below, choose the most appropriate answer from the list above. Each option may be used once, more than once or not at all.

 

1. A 39 year old woman arrives in A&E complaining of cramping abdominal pains that radiate to her groin.  She also notes that she is struggling to cope at home with her two young children and often finds herself in tears. On investigation what is the woman’s Ca2+ level likely to be?

 

2. A 19-year-old student presents with vomiting and abdominal pain and is very anxious. His pH=7.8, PaCO2=3.4, K+=2.3 Na+=155.  What is the patients’ HCO3- likely to be?

 

 

3. A 50-year man presents unconscious to A&E with a long history of polyuria and polydipsia.  Investigations reveal; Na+=165mM, K+=5mM, U=50mM, Glucose=55mM. What is the patients osmolarity?

 

 

4. A 70-year-old hypertensive woman on the ward becomes confused over night. Her urine Na+= 40mmol/l, what is her serum Na+ likely to be?

 

 

5. A 40-year-old smoker presents in clinic with muscle weakness and weight loss.  The patients blood pressure is normal and on investigation his urine osmolarity is 520mmol/kg, Na+=120mmol/L.  The medical team suspect SIADH.  What would you expect the plasma osmolarity to be?

 

 

 

ANSWERS

1. B

2. D

3. F

4. K

5. H