000 02540nam a22004457a 4500
008 180706s20182018 xxu||||| |||| 00| 0 eng d
022 _a0007-5027
024 _a10.1093/labmed/lmy025 [doi]
024 _a5036164 [pii]
040 _aOvid MEDLINE(R)
099 _a29897485
245 _aSevere Underestimation of Serum Na following IVIG Treatment.
251 _aLaboratory Medicine. 49(4):372-376, 2018 Oct 11.
252 _aLab Med. 49(4):372-376, 2018 Oct 11.
253 _aLaboratory medicine
260 _c2018
260 _fFY2019
266 _d2018-07-06
269 _fFY2018
520 _aCurrent chemistry analyzers measure ion concentration using ion- selective electrodes; however, may differ in the specific technology at the bedside versus the central laboratory. Instruments utilized for point-of-care testing (POCT) at the bedside use direct ion-selective electrodes, whereas central-laboratory analyzers use indirect ion-selective electrodes. Under most circumstances, these instruments will deliver the same result; however, various substances can cause interferences in one or the other. An 18-year-old Hispanic woman with a history of immune thrombocytopenic purpura (ITP) presented at Children's National Medical Center (CNMC) with a severe headache and required intravenous immunoglobulin (IVIG) therapy. Because a discrepancy developed between her point-of-care and central-laboratory sodium values, another instrument was used to retest the central-laboratory plasma specimens. The results were more in agreement with those from the point-of-care instrument and revealed a unique interference in sodium measurement related to IVIG use.
546 _aEnglish
650 _a*Immunoglobulins, Intravenous/tu [Therapeutic Use]
650 _a*Purpura, Thrombocytopenic, Idiopathic/bl [Blood]
650 _a*Purpura, Thrombocytopenic, Idiopathic/dt [Drug Therapy]
650 _a*Sodium/bl [Blood]
650 _aAdolescent
650 _aDiagnostic Errors
650 _aFemale
650 _aHumans
650 _aPurpura, Thrombocytopenic, Idiopathic/di [Diagnosis]
650 _aPurpura, Thrombocytopenic, Idiopathic/pp [Physiopathology]
650 _aReproducibility of Results
651 _aMedStar Washington Hospital Center
656 _aPathology
657 _aJournal Article
700 _aVirk, Mrigender S
790 _aDean NP, Virk MS, Wong ECC
856 _uhttps://dx.doi.org/10.1093/labmed/lmy025
_zhttps://dx.doi.org/10.1093/labmed/lmy025
942 _cART
_dArticle
999 _c3512
_d3512