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Featured researches published by John Cook-Jong Lee.


Journal of Korean Medical Science | 2016

Reduced Mortality by Physician-Staffed HEMS Dispatch for Adult Blunt Trauma Patients in Korea

Kyoungwon Jung; Yo Huh; John Cook-Jong Lee; Younghwan Kim; Jonghwan Moon; Seok Hwa Youn; Jiyoung Kim; Tea Youn Kim; Juryang Kim; Hyoju Kim

The aim of this study was to investigate the efficiency of domestic physician-staffed helicopter emergency medical service (HEMS) for the transport of patients with severe trauma to a hospital. The study included patients with blunt trauma who were transported to our hospital by physician-staffed HEMS (Group P; n = 100) or nonphysician-staffed HEMS (Group NP; n = 80). Basic patient characteristics, transport time, treatment procedures, and medical treatment outcomes assessed using the Trauma and Injury Severity Score (TRISS) were compared between groups. We also assessed patients who were transported to the hospital within 3 h of injury in Groups P (Group P3; n = 50) and NP (Group NP3; n = 74). The severity of injury was higher, transport time was longer, and time from hospital arrival to operation room transfer was shorter for Group P than for Group NP (P < 0.001). Although Group P patients exhibited better medical treatment outcomes compared with Group NP, the difference was not statistically significant (P = 0.134 vs. 0.730). However, the difference in outcomes was statistically significant between Groups P3 and NP3 (P = 0.035 vs. 0.546). Under the current domestic trauma patient transport system in South Korea, physician-staffed HEMS are expected to increase the survival of patients with severe trauma. In particular, better treatment outcomes are expected if dedicated trauma resuscitation teams actively intervene in the medical treatment process from the transport stage and if patients are transported to a hospital to receive definitive care within 3 hours of injury.


Journal of Korean Medical Science | 2015

Effective Transport for Trauma Patients under Current Circumstances in Korea: A Single Institution Analysis of Treatment Outcomes for Trauma Patients Transported via the Domestic 119 Service

Jiyoung Kim; Yunjung Heo; John Cook-Jong Lee; Sukja Baek; Younghwan Kim; Jonghwan Moon; Seok Hwa Youn; Heejung Wang; Yo Huh; Kyoungwon Jung

In Korea, which still lacks a well-established trauma care system, the inability to transport patients to adequate treatment sites in a timely manner is a cause of low trauma patient survival. As such, this study was conducted to serve as a basis for the establishment of a future trauma transport system. We performed a comparative analysis of the transport time, and treatment outcomes between trauma victims transported by ground ambulance (GAMB) and those transported via the helicopter emergency medical service (HEMS) through the National Emergency Management Agencys 119 reporting system, which is similar to the 911 system of the United States, from March 2011 to May 2014. The HEMS-transported patients received treatment instructions, by remote communication, from our trauma specialists from the time of accident reporting; in certain instances, members of the trauma medical staff provided treatment at the scene. A total of 1,626 patients were included in the study; the GAMB and HEMS groups had 1,547 and 79 patients, respectively. The median transport time was different between 2 groups (HEMS, 60 min vs. GAMB, 47 min, P<0.001) but for all patients was 49 min (less than the golden hour). Outcomes were significantly better in the HEMS compared to the GAMB, using the trauma and injury severity score (survival rate, 94.9% vs. 90.5%; Z score, 2.83 vs. -1.96; W score, 6.7 vs. -0.8). A unified 119 service transport system, which includes helicopter transport, and the adoption of a trauma care system that allows active initial involvement of trauma medical personnel, could improve the treatment outcome of trauma patients. Graphical Abstract


Surgery | 2018

Comparison of outcomes in severely injured patients between a South Korean trauma center and matched patients treated in the United States

Kyoungwon Jung; Shokei Matsumoto; Alan Smith; Kyungjin Hwang; John Cook-Jong Lee; Raul Coimbra

Background: The South Korean government recently developed a master plan for establishing a national trauma system based on the implementation of regional trauma centers. We aimed to compare outcomes between severely injured patients treated at a recently established South Korean trauma center and matched patients treated in American level‐1 trauma centers. Methods: Two cohorts were selected from an institutional trauma database at Ajou University Medical Center (AUMC) and the American National Trauma Data Bank. Adult patients with an Injury Severity Score of ≥9 were included. Patients were matched based on covariates that affect mortality, using 1:1 propensity score matching. We compared outcomes between the two datasets and performed survival analyses. Results: We created 1,451 and 2,103 matched pairs for the pre‐trauma center and post‐trauma center periods, respectively. The in‐hospital mortality rate was higher in the institutional trauma database pre‐trauma center period compared with the American National Trauma Data Bank (11.6% versus 8.1%, P<.001). However, the mortality rate decreased in the institutional trauma database post‐trauma center period and was similar to that in the American National Trauma Data Bank (6.9% versus 6.8%, P=.903). Being treated at Ajou University Medical Center Trauma Center was significantly associated with higher mortality during the pre‐trauma center period (OR: 1.842, 95% CI: 1.336–2.540; P<.001), although no significant association was observed during the post‐trauma center period (OR: 1.102, 95% CI: 0.827–1.468; P=.509). Conclusion: The mortality rate improved after a trauma center was established in a South Korean hospital and is similar to that from matched cases treated at American level‐1 trauma centers. Thus, creating trauma centers and a regional trauma system may improve outcomes in major trauma cases.


Journal of The Korean Surgical Society | 2017

Trauma surgery without proper compensation under the current Korean National Health Insurance System

Kyoungwon Jung; Yunjung Heo; John Cook-Jong Lee; Mijin Lee; Suni Son; Hee Suk Park; Joo-Ok Kim; Jeong Hee Lee

Purpose This study aimed to evaluate the situations and problems of the current health insurance fees for trauma surgeries. Methods We reviewed the medical records and billing data from trauma surgeries performed in the hospital from August 2012 to July 2014. The name and number of surgeries were investigated and the code and number of operations prescribed by surgeons were compared with the number of cases actually billed to insurance. In addition, the results returned by the Health Insurance Review & Assessment Services (HIRA) after deduction were investigated and compared to verify the insurance review findings. Results During the study period, total 1,534 trauma surgical procedures were performed for a total of 253 trauma patients. Based on names, 1,092 procedures were performed; however, 442 cases (28.8%) could not be prescribed because of lack of proper insurance codes for the procedures. A total of 1,046.5 surgical procedures were prescribed by surgeons, adjusted by the insurance team, and finally billed to the HIRA; 162 bills were returned from the HIRA after rate reductions, corresponding to a reduction rate of 15.5%. The major reason for reduction was “fee criteria and limited number”. The compensation rate for billed surgical procedures was 84.5%. Conclusion The high reduction and low compensation rate for trauma surgery under the current Korean National Health Insurance System need to be reviewed and improved. Furthermore, it is necessary to establish new criteria for surgical procedures fees for latest ones such as damage control surgery performed on severe trauma patients.


World Journal of Surgery | 2015

Central Venous Catheter-Related Infection in Severe Trauma Patients

Seok Hwa Youn; John Cook-Jong Lee; Younghwan Kim; Jonghwan Moon; Younghwa Choi; Kyoungwon Jung


Journal of The Korean Surgical Society | 2015

Risk factors for mortality of severe trauma based on 3 years` data at a single Korean institution

Joohyun Sim; Jaeheon Lee; John Cook-Jong Lee; Yunjung Heo; Hee-Jung Wang; Kyoungwon Jung


The Korean Journal of Critical Care Medicine | 2016

The Best Prediction Model for Trauma Outcomes of the Current Korean Population: a Comparative Study of Three Injury Severity Scoring Systems

Kyoungwon Jung; John Cook-Jong Lee; Rae Woong Park; Dukyong Yoon; Sungjae Jung; Younghwan Kim; Jonghwan Moon; Yo Huh; Junsik Kwon


Journal of Acute Care Surgery | 2017

Safety and Efficacy of Type-O Packed Red Blood Cell Transfusion in Traumatic Hemorrhagic Shock Patients: Preliminary Study

Byung Hee Kang; Kyoungwon Jung; Yunjung Heo; John Cook-Jong Lee


Yonsei Medical Journal | 2016

The Applicability of Trauma and Injury Severity Score for a Blunt Trauma Population in Korea and a Proposal of New Models Using Score Predictors

Kyoungwon Jung; Yo Huh; John Cook-Jong Lee; Younghwan Kim; Jonghwan Moon; Seok Hwa Youn; Jiyoung Kim; Juryang Kim; Hyoju Kim


Journal of Acute Care Surgery | 2016

Injury Severity Scoring System for Trauma Patients and Trauma Outcomes Research in Korea

Kyounwon Jung; John Cook-Jong Lee; Jiyoung Kim

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