Q:

A high blood potassium level (hyperkalaemia)

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 A high blood potassium level (hyperkalaemia)


  1. Occurs in acute renal failure.
  2. Follows severe crush injuries to the limbs.
  3. May diminish cardiac performance and cause death.
  4. Increases skeletal muscle strength.
  5. May be reduced by intravenous infusion of insulin and glucose.

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 A. True  Due to inability to excrete K ingested and released from cell breakdown in the body.

B. True  Potassium is released from the damaged muscle fibres.

C. True  Abnormal rhythms and heart failure may result.

D. False  Both hypo- and hyperkalaemia cause skeletal muscle weakness.

E. True  This facilitates entry of potassium into cells.

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