{'fraction_non_alphanumeric': 0.019688269073010665, 'fraction_numerical': 0.0, 'mean_word_length': 6.530864197530864, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Factitious hyperkalemia in hematologic disorders

Hyperkalemia is a potentially lethal condition leading to fatal cardiac arrhythmias or asystole. After its urgent confirmation, immediate treatment is essential. Conversely, treatment of factitious hyperkalemia – where the measured potassium concentration does not reflect properly the actual potassium homeostasis of the patient – is unnecessary and may even have lethal consequences. Therefore, upon measuring elevated potassium concentration of a patient, distinction between true and factitious hyperkalemia is crucial. Hematologic disorders are often associated with distinct types of factitious hyperkalemia (pseudohyperkalemia or reverse pseudohyperkalemia). However, in spite of numerous reports, these conditions remain frequently unrecognized. In this letter, we present a case of thrombocytosis-associated pseudohyperkalemia to emphasize its clinical importance. Furthermore, we summarize distinct mechanisms behind factitious hyperkalemia in different hematologic conditions, overview their frequencies and propose a diagnostic algorithm to help their early recognition. Additionally, utility of ECG in recognizing factitious hyperkalemia is also discussed.