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Korean J Crit Care Med > Volume 21(1); 2006 > Article
Korean Journal of Critical Care Medicine 2006;21(1): 17-27.
흡입화상을 동반한 중증 화상환자에서 Stewart 생화학적 방식에 의한 산·염기 장애와 사망률과의 관계
광주광역시 보건위생과, *한림대학교 의과대학 내과학교실
Diagnosis of Acid-base Imbalance by Stewart's Physicochemical Approach and Mortality Prediction in Severe Burn Patients with Inhalation Injury
Sunghoon Park, Cheol Hong Kim, In Gyu Hyun, Ki Suck Jung
1Department of Public Health and Hygiene, Gwangiu, Korea.
2Department of Internal Medicine, Hallym University College of Medicine, Seoul, Korea. kimch2002@hallym.or.kr
BACKGROUND: Acid-base derangement are commonly encountered in critically ill patients. This study is to investigate underlying mechanisms of acid-base imbalance and also to examine whether they can predict mortality in burn patients. METHODS: We retrospectively reviewed 73 severely burned patients who had admitted to burn intensive care unit, from January to July in 2004. All the patients had inhalation injury, identified by bronchoscopic examination. We analyzed the type and nature of the acid-base imbalances from arterial blood gas analysis, electrolytes and other biological tests between survivors and non-survivors for 30 days after admission. RESULTS: Acidosis was the most common disorder during the early and late hospital periods. Large fractions of those showed decreased strong ion difference (SID), increased anion gap corrected by albumin (AGc) and [Cl-]corrected. Mixed disorder and alkalosis emerged after the 7(th) hospital day. As time went by, albumin, PaO2/FiO2 ratio, pH and SID were more decreased in non-survivors (n=28) than in survivors (n=45) while [Cl-] corrected, alveolar-arterial oxygen tension gradients, peripheral WBC counts and CRP were more increased in non-survivors than in survivors. In the area under the receiver operating characteristic curves for mortality prediction, APACHE II score and % of total body surface area (%TBSA) burn were high: 0.866 (95% CI; 0.785~0.946) for APACHE II score, 0.817 (95% CI; 0.717~0.918) for %TBSA burn. CONCLUSIONS: In burned patients with inhalation injury, various types of acid-base imbalances and electrolytes abnormalities emerged after resuscitation and so, more careful attentions pursued for correcting underlying acid-base derangement.
Key Words: Acid-base imbalance; Burns; Electrolytes; Inhalation
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