pseudohyperkalemia

(redirected from pseudohyperkalaemia)

pseu·do·hy·per·kal·e·mi·a

(sū'dō-hī'pĕr-kal-ē'mē-ă),
A spurious elevation of the serum concentration of potassium occurring when potassium is released in vitro from cells in a blood sample collected for a potassium measurement. This may be a consequence of disease (that is, myeloproliferative disorders with marked leukocytosis or thrombocytosis) or as a result of improper collection technique with in vitro hemolysis.
[pseudo + G. hyper, above + L. kalium, potassium, G. haima, blood]

pseudohyperkalemia

Lab medicine An in vitro phenomenon seen in megakaryocytic hyperplasia, thrombocytosis, leukocytosis, or myeloproliferative disease, where rapid clotting of blood releases potassium from RBCs Lab ↑ Serum K+, plasma K+ is normal. Cf Hyperkalemia.

pseu·do·hy·per·ka·le·mi·a

(sū'dō-hī'pĕr-kă-lē'mē-ă)
A spurious elevation of the serum concentration of potassium, occurring when potassium is released in vitro from cells in a blood sample collected for a potassium measurement. May be a consequence of disease (i.e., myeloproliferative disorders with marked leukocytosis or thrombocytosis) or result from an improper collection technique with in vitro hemolysis.
Synonym(s): pseudohyperkalaemia.
[pseudo + G. hyper, above + L. kalium, potassium, G. haima, blood]
References in periodicals archive ?
Cynober et al., "A genetic syndrome associating dehydrated hereditary stomatocytosis, pseudohyperkalaemia and perinatal oedema," British Journal of Haematology, vol.
* If severe hyperkalaemia is observed, despite the absence of reduced kidney function, pseudohyperkalaemia, an artefact due to haemolysis of the blood specimen, should be considered.
Pseudohyperkalaemia from finger flexion during venepuncture masks true hypokalaemia.
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