Q:

A low serum potassium leve

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 A low serum potassium leve.


  1. . Can be suspected from the appearance of the ECG.
  2. Can result from repeated vomiting of gastric contents.
  3. Indicates that total body potassium is low.
  4. May be a consequence of aldosterone deficiency.
  5. Impairs gut motility.

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A. True It leads to low voltage T waves.

B. True The vomitus is relatively rich in potassium.

C. False It is a poor reflector of total body potassium.

D. False This favours retention of potassium and a high serum level.

E. True It may cause paralytic ileus (paralysis of peristalsis).

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