A patient with a serum potassium level of 6.8 mEq/L may exhibit electrocardiographic changes of

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Quizplus · Accepted Answer

Normal serum potassium levels are 3.5 to 4.5 mEq/L.Tall, narrow peaked T waves are usually, although not uniquely, associated with early hyperkalemia and are followed by prolongation of the PR interval, loss of the P wave, widening of the QRS complex, heart block, and asystole.Severely elevated serum potassium (greater than 8 mEq/L)causes a wide QRS tachycardia.

A Patient with a Serum Potassium Level of 6