A patient in the emergency room was admitted due to hypertension with a blood pressure of 160/100 mmHg. Blood test shows potassium level is at 5.5 mEq/L, calcium is 9.2 mg/dl, sodium is 139, and the ECG results show irregular cardiac rhythm. Which imbalance is the patient experiencing?



• Normal potassium ranges from 3.5 to 5.0 mEq/L. This patient is hyperkalemic and suffering from cardiac arrhythmias as a result.

• Normal calcium range: 9–10.5 mg/dl.

• Normal sodium range: 136–145 mEq/L.

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