Nomura M, Nakasuji M, Nakamura M, Imanaka N, Tanaka M, Kawashima H [A pitfall in intraoperative electrolyte management for patients with pseudohyperkalemia caused by thrombocytosis] [English Abstract, Journal Article] Masui 2009 Oct; 58(10):1300-2.
An 81-year-old woman was scheduled for gastrectomy due to advanced gastric cancer. Preoperative serum potassium concentration was 6.5 mEq x l(-1), and the operation was postponed. Renal function was normal and hematopathy was denied after bone marrow biopsy. But thrombocyte was 130.5 x 10(4) x mm(-3). Plasma potassium concentration was within normal ranges, and she was diagnosed as pseudohyperkalemia caused by thrombocytosis. Difference between serum and plasma potassium concentrations was more than 1 mEq x l(-1) throughout the surgery. We should take a blood plasma sample in patients with hyperkalemia combined with thrombosis, when renal function was within normal ranges and hemolysis was denied.
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