Pseudohyperkalemia associated with essential thrombocytosis; a hint for better clinical practice

Abstract

A 75-year-old Iranian man admitted to the emergency ward of Shariati Hospital, Tehran, Iran, with symptoms of weakness, lethargy, nausea, and vomiting. His past medical history was remarkable for diabetes mellitus, hypertension, and hyperlipidemia. The patient was on metformin 500 mg daily and losartan 25 daily but admitted to not always being compliant.On examination, the patient was alert and oriented. Her temperature, O 2 saturation, respiratory rate, and pulse rate were normal. But his systolic blood pressure was 147 over 73 mmHg. Initial blood tests revealed a