A client recovering from cardiac surgery experiences a dysrhythmia, noted on the telemetry monitor. Which assessment finding is most likely to have contributed to the development of the dysrhythmia? Reference Range: Total Calcium [8.4 to 10.6 mg/dL (2.10 to 2.50 mmol/L)] Sodium [136 to 145 mEq/L (136 to 145 mmol/L)] Potassium (K+) [3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L)]