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Korean J Crit Care Med > Volume 15(1); 2000 > Article
Korean Journal of Critical Care Medicine 2000;15(1): 35-40.
기존의 혈액가스분석기 (Chiron348 ph/blood gas/electrolytes analyzer)와 I - STAT 휴대용 분석기의 비교
정동석, 김종분, 유시현
가톨릭대학교 의과대학 마취과학교실
Comparison of Conventional Chiron 348 pH/blood Gas/electrolytes Analyzer and i-STAT Portable Clinical Analyzer
Dong Suk Chung, Jong Bun Kim, Sie Hyun You
Department of Anesthesiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
BACKGROUND: The development of so-called "Point-of-care" (POC) devices for blood or urine analysis has resulted in many systems that are widely used at home or at the bedside. We evaluated the performance of the I-STAT portable clinical analyzer for measuring blood gases (pH, PCO2, PO2) and whole blood electrolytes (sodium, potassium and ionized calcium) with reference to a conventional blood gas analyzer (Chiron 348 pH/ blood gas/electrolytes). METHODS: Thirty samples from the arterial blood were simultaneously analyzed with I-STAT system and with Chiron 348 pH/blood gas/ electrolytes analyzer. Differences between results of two methods were analyzed by paired t-test (p<0.05). RESULTS: PO2, PCO2 and Na measured with I-STAT system and Chiron 348 PH/ blood gas/ electrolytes analyzer showed no significant differences. pH, calculated HCO3, K and Ca measured by two methods showed significant difference, but observed differences would not affect clinical decisions except ionized calcium. CONCLUSIONS: This study shows that blood gas and electrolyte analysis using the I-STAT portable device is comparable with that performed by a conventional Chiron 348 pH/blood gas/ electrolytes analyzer except ionized calcium.
Key Words: Chiron 348 pH/blood gas/electrolytes analyzer; electrolytes; ionized calcium; i-STAT portable clinical analyzer; point-of-care devices
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