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Seung Mok Ryoo 2 Articles
Toxicology
Methemoglobinemia Caused by an Inert Ingredient after Intentional Ingestion of Pesticide
Ru Bi Jeong, Chang Hwan Sohn, Dong Woo Seo, Won Young Kim, Seung Mok Ryoo, Bum Jin Oh, Kyoung Soo Lim
Korean J Crit Care Med. 2014;29(4):341-343.   Published online November 30, 2014
DOI: https://doi.org/10.4266/kjccm.2014.29.4.341
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AbstractAbstract PDF
We report two cases of toxic methemoglobinemia caused by an inert ingredient in pesticide product after intentional ingestion of pesticide. First, 51-year-old male visited to the emergency department (ED) after the ingestion of pesticide in a suicide attempt. Initial methemoglobin (MetHb) level was 25.6%. We did not know the cause of methemoglobinemia at that time. Second, 56-year-old female visited to the ED after the ingestion of the same pesticide in a suicide attempt. MetHb level after 30 minutes was 16.1%. The patients were treated with methylene blue. We contacted to the Korean Rural Development Administration and estimated that magnesium nitrate was more likely to cause methemoglobinemia. This report highlights the importance of considering the possibility of methemoglobinemia caused by inert ingredient in pesticide and early antidotal therapy.
Initiation of Continuous Renal Replacement Therapy and Clinical Outcome in Septic Shock Patients with Acute Kidney Injury
Seung Mok Ryoo, Won Young Kim, Sang Sik Choi, Jin Won Huh, Sang Bum Hong, Chae Man Lim, Younsuck Koh
Korean J Crit Care Med. 2012;27(1):29-35.
DOI: https://doi.org/10.4266/kjccm.2012.27.1.29
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AbstractAbstract PDF
BACKGROUND
Initiation of renal replacement therapy (RRT) in critically ill septic shock patients with acute kidney injury is highly subjective and may influence outcome. The aim of this study is to evaluate the relationship between initiation of RRT and 28 day mortality in patients with severe sepsis and septic shock (SSSS).
METHODS
All patients diagnosed with SSSS and treated at the medical intensive care unit (ICU) in university-affiliated hospital from January 2005 to December 2006 were reviewed. Initiation of RRT was stratified into "early" and "late" by RIFLE (Risk, Injury, Failure, Loss, and End-stage) criteria and blood urea nitrogen (BUN) at the time RRT began. The primary outcome was death after 28 days from any cause.
RESULTS
Of the 326 patients diagnosed with SSSS and admitted into the medical ICU during the study period, 78 patients received RRT. Mean age was 61.5 +/- 14.7 years old and 54 patients were male (69.2%). The initiation of RRT was categorized into early (Risk, and Injury) and late (Failure) by RIFLE criteria and also categorized into early (BUN < 75 mg/dl) and late (BUN > or = 75 mg/dl). When the relationship between RIFLE criteria and 28 day mortality was compared, no significant difference was shown (70.8% vs. 73.3%, p = 0.81). The initiation of RRT by BUN also showed no significant difference in 28 day mortality (77.3% vs. 69.6%, p = 0.50).
CONCLUSIONS
Initiation of RRT, stratified into "early" and "late" by RIFLE and BUN, showed no significant difference in 28 day mortality regarding patient with SSSS.

ACC : Acute and Critical Care