Wook Youm

Publications (2)3.6 Total impact

• Article: Pulse pressure as a prognostic marker in patients receiving extracorporeal life support.

  Byoung-Won Park, Dae-Chul Seo, In-Ki Moon, Jin-Wook Chung, Duk-Won Bang, Min-Su Hyon, Sung-Koo Kim, Won-Ho Chang, Wook Youm
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  ABSTRACT: BACKGROUND: It is not easy to predict the prognosis of patients receiving extracorporeal life support (ECLS) because of the highly variable situation around its implementation. We evaluated the role of pulse pressure (PP), which is available on real-time basis, as a hemodynamic prognostic marker during ECLS. METHODS: From January 2009 to August 2011, data from 69 patients who were treated with ECLS for at least 6hours in a single center for any cause was collected. We calculated the mean PP over the first 6hours after ECLS implantation and examined if there was any correlation between mean PP and the study endpoints, in-hospital death and ECLS weaning failure RESULTS: The causes of ECLS were of cardiac origin in 36 patients (52%). 27 patients (39.1%) weaned off ELCS and 13 patients (18.8%) survived to discharge. In Cox regression analysis (with age, Killip class ≥3, ECLS implementation during cardiopulmonary resuscitation (CPR), CPR duration, out-of-hospital arrest, initial laboratory results including blood gas analysis, initial systolic blood pressure (SBP), mean SBP over the first 6hours after ECLS implantation, mean PP over the first 6hours after ECLS implantation as independent variables), mean PP over the first 6hours after ECLS implantation (hazard ratio [95% confidence interval]=0.96[0.94-0.98], P<0.001) and out-of-hospital arrest (HR [95%CI]=2.04[1.14-3.62], P=0.02) were independent predictors of in-hospital mortality and mean PP over the first 6hours after ECLS implantation (HR[95% CI]=0.95[0.93-0.98], P<0.001) was the sole independent predictor of weaning failure CONCLUSION: Higher mean PP over the initial 6hours after ECLS implementation independently predicted successful weaning and survival. Our findings may help better predict and analyze prognosis in patients receiving ECLS.
  Resuscitation 04/2013; · 3.60 Impact Factor
• Source

  Available from: PubMed Central

  Article: Extracorporeal Life Support After Prolonged Resuscitation for In-Hospital Cardiac Arrest due to Refractory Ventricular Fibrillation: Two Cases Resulting in a Full Recovery.

  Jin Wook Chung, Won Ho Chang, Min Su Hyon, Wook Youm
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  ABSTRACT: Extracorporeal life support (ECLS) has well demonstrated its efficacy in treating in-hospital cardiac arrest and is being used for broader indications. However, ECLS after prolonged cardiopulmonary resuscitation (CPR) has been traditionally contraindicated and is now challenging. Here, we introduce two cases of successful ECLS after prolonged CPR, resulting in a immediate and full recovery. Both these acute ST elevation myocardial infarction patients waiting for primary percutaneous coronary intervention (PCI) suddenly collapsed due to ventricular fibrillation (VF), which was refractory to conventional treatment. After 2 hours of conventional CPR, the ECLS had been implemented and primary PCI could be performed. Subsequent to successful revascularization, the VF was stopped with a single electric shock. In our second case, normal sinus rhythm was spontaneously restored after ECLS implementation, which was completed after 45 minutes of conventional resuscitation. Both patients made a full neurological recovery on the day of the event and were discharged with only minor complications.
  Korean Circulation Journal 06/2012; 42(6):423-6.