Page 259 - Saunders Comprehensive Review For NCLEX-RN

Table 8-3

Electrocardiographic Changes in Electrolyte Imbalances

Electrolyte Imbalance Electrocardiographic Changes
Hypokalemia ST depression
Shallow, flat, or inverted T wave
Prominent U wave
Hyperkalemia Tall peaked T waves
Flat P waves
Widened QRS complexes
Prolonged PR interval
Hypocalcemia Prolonged ST segment
Prolonged QT interval
Hypercalcemia Shortened ST segment
Widened T wave
Heart block
Hypomagnesemia Tall T waves
Depressed ST segment
Hypermagnesemia Prolonged PR interval
Widened QRS complexes

Box 8-2

Precautions With Intravenously Administered
Potassium

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