1.Current status of treatment for esophagojejunostomy leakage after total gastrectomy in patients with gastric cancer: a multicenter retrospective study in Korea
Min-Chan KIM ; Mi Ran JUNG ; Jeong Ju NOH ; Sunghwa KANG ; Jae Hun CHUNG ; Ji-Ho PARK ; Tae-Han KIM ; Jae Kyun PARK ; Yoonhong KIM ; Sang Hyuk SEO ; Sung Eun KIM ; Oh Kyung KWON ; Ji Yeon PARK ; Ki Bum PARK ; Sun-Hwi HWANG ; SI-Hak LEE ; Young-Joon LEE ; Sang-Ho JEONG ; Tae-Yong JEON ; Dae Hwan KIM ; Chang In CHOI ; Ki Young YOON ; Kyung Won SEO ; Ki Hyun KIM ; Sang Hoon OH ; Kwang Hee KIM
Journal of Minimally Invasive Surgery 2025;28(4):184-192
Purpose:
Esophagojejunostomy leakage (EJL) remains one of the most critical complications following total gastrectomy for gastric cancer. This study aimed to evaluate the evolving therapeutic approaches and clinical outcomes of EJL using data from a large-scale multicenter retrospective cohort.
Methods:
Among 6,577 patients who underwent total gastrectomy or proximal gastrectomy with double tract reconstruction at nine institutions from 2003 to 2024, 196 (3.0%) developed EJL. Of these, 162 patients with comprehensive clinical data were included in the final analysis. The study examined treatment modalities, changes in management over time, patient characteristics, surgical variables, and clinical outcomes. Four groups were defined according to treatment approach: conservative, endoscopic, reoperation, and multimodal (combined) therapy.
Results:
Endoscopic therapy was first introduced in 2011 and has progressively supplanted reoperation, now comprising 32.5% of cases. The average time to EJL diagnosis was 8.4 days after surgery. Overall in-hospital mortality was 6.1% (10/162). When conservative management was excluded, endoscopic treatment demonstrated the highest rate of therapeutic success (94.3%, p = 0.004). Both the duration until diet resumption and length of hospital stay were notably reduced in the endoscopic and conservative groups compared with reoperation and multimodal therapy (p < 0.001). Moreover, although the highest post-leakage hospitalization costs were observed with multimodal treatment (p < 0.001), overall hospitalization expenses were significantly lower for patients managed conservatively or with endoscopic intervention (p < 0.001).
Conclusion
Over the past two decades, management of EJL has shifted toward endoscopic approaches. Endoscopic therapies yield superior clinical outcomes and should be considered a primary option for appropriate candidates.
2.Evaluation of the Safety and Efficacy of K-CAB (Tegoprazan) as Symptomatic Maintenance Therapy in Patients With NERD: A Multicenter, Randomized Double-Blinded Controlled Trial
Yong Hwan KWON ; Joong Goo KWON ; June Hwa BAE ; Hyeong Ho JO ; Eun Young KIM ; Seong Woo JEON ; Yun Jin CHUNG ; Ju Yup LEE ; Kyung Sik PARK ; Si Hyung LEE ; Chang Hun YANG ;
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2025;25(4):371-376
Objectives:
This preliminary, randomized, double-blind, multi-center study evaluated the efficacy of alternate-day tegoprazan (50 mg) versus daily lansoprazole (15 mg) as for maintenance therapy in patients with non-erosive reflux disease (NERD).
Methods:
Forty five participants were enrolled and treated for 8 weeks. The primary endpoint was the proportion of symptom-free days. The secondary endpoints were changes in Gastrointestinal Symptom Rating Scale (GSRS) and Gastroesophageal Reflux Disease-Health Related Quality of Life (GERD-HRQL) scores.
Results:
It showed no significant difference between groups in the proportion of symptom-free days between both groups (tegoprazan: 60.4%±6.3%; lansoprazole: 74.0%±6.5%). The GSRS and GERD-HRQL score improvements were also comparable between both groups. Both treatments were well tolerated, with no serious adverse events reported.
Conclusions
These findings suggest that alternate-day tegoprazan offers comparable efficacy and safety to daily lansoprazole therapy and may serve as a more flexible and patient-friendly maintenance option for NERD.
3.Hazards of Tattoo Procedures Performed by Non-Medical Personnel:1st Policy Forum of the Korean Dermatological Research Foundation
Dong Hyun KIM ; Gwang June LEE ; Sungjoo HWANG ; Si-Hyung LEE ; Hyun Chul SUNG ; Sang Ju LEE ; Ji Hwan HWANG ; Young-wook RYOO ; Dong Hun LEE ; Sung Eun CHANG ; Hoon KANG
Korean Journal of Dermatology 2024;62(10):541-549
Tattooing is an invasive procedure that involves the introduction of permanent pigments into the dermis, and is categorized as a medical procedure in Korea. Despite the medical, cosmetic, and aesthetic purposes of tattooing, legislative proposals to allow non-medical personnel to perform tattooing have consistently been rejected on public health grounds, prioritizing health and safety considerations. Professional organizations have maintained a consistent position, highlighting the risks of allowing non-medical individuals to perform tattooing. These risks include procedural complications, use of unsafe practices, and inadequate legal frameworks to ensure accountability.Addressing such issues requires careful consideration beyond economic or convenience factors, with an emphasis on public health policies. To address these concerns, the Korean Dermatological Research Foundation convened its 1st Policy Forum on October 6, 2024. The forum discussed the safety aspects, medical complications, and legal implications of tattooing performed by non-medical personnel. These findings highlight the significant risks and regulatory gaps associated with such practices, underscoring the need for a comprehensive review and stringent regulations to protect public health.
4.Hazards of Tattoo Procedures Performed by Non-Medical Personnel:1st Policy Forum of the Korean Dermatological Research Foundation
Dong Hyun KIM ; Gwang June LEE ; Sungjoo HWANG ; Si-Hyung LEE ; Hyun Chul SUNG ; Sang Ju LEE ; Ji Hwan HWANG ; Young-wook RYOO ; Dong Hun LEE ; Sung Eun CHANG ; Hoon KANG
Korean Journal of Dermatology 2024;62(10):541-549
Tattooing is an invasive procedure that involves the introduction of permanent pigments into the dermis, and is categorized as a medical procedure in Korea. Despite the medical, cosmetic, and aesthetic purposes of tattooing, legislative proposals to allow non-medical personnel to perform tattooing have consistently been rejected on public health grounds, prioritizing health and safety considerations. Professional organizations have maintained a consistent position, highlighting the risks of allowing non-medical individuals to perform tattooing. These risks include procedural complications, use of unsafe practices, and inadequate legal frameworks to ensure accountability.Addressing such issues requires careful consideration beyond economic or convenience factors, with an emphasis on public health policies. To address these concerns, the Korean Dermatological Research Foundation convened its 1st Policy Forum on October 6, 2024. The forum discussed the safety aspects, medical complications, and legal implications of tattooing performed by non-medical personnel. These findings highlight the significant risks and regulatory gaps associated with such practices, underscoring the need for a comprehensive review and stringent regulations to protect public health.
5.Hazards of Tattoo Procedures Performed by Non-Medical Personnel:1st Policy Forum of the Korean Dermatological Research Foundation
Dong Hyun KIM ; Gwang June LEE ; Sungjoo HWANG ; Si-Hyung LEE ; Hyun Chul SUNG ; Sang Ju LEE ; Ji Hwan HWANG ; Young-wook RYOO ; Dong Hun LEE ; Sung Eun CHANG ; Hoon KANG
Korean Journal of Dermatology 2024;62(10):541-549
Tattooing is an invasive procedure that involves the introduction of permanent pigments into the dermis, and is categorized as a medical procedure in Korea. Despite the medical, cosmetic, and aesthetic purposes of tattooing, legislative proposals to allow non-medical personnel to perform tattooing have consistently been rejected on public health grounds, prioritizing health and safety considerations. Professional organizations have maintained a consistent position, highlighting the risks of allowing non-medical individuals to perform tattooing. These risks include procedural complications, use of unsafe practices, and inadequate legal frameworks to ensure accountability.Addressing such issues requires careful consideration beyond economic or convenience factors, with an emphasis on public health policies. To address these concerns, the Korean Dermatological Research Foundation convened its 1st Policy Forum on October 6, 2024. The forum discussed the safety aspects, medical complications, and legal implications of tattooing performed by non-medical personnel. These findings highlight the significant risks and regulatory gaps associated with such practices, underscoring the need for a comprehensive review and stringent regulations to protect public health.
6.Hazards of Tattoo Procedures Performed by Non-Medical Personnel:1st Policy Forum of the Korean Dermatological Research Foundation
Dong Hyun KIM ; Gwang June LEE ; Sungjoo HWANG ; Si-Hyung LEE ; Hyun Chul SUNG ; Sang Ju LEE ; Ji Hwan HWANG ; Young-wook RYOO ; Dong Hun LEE ; Sung Eun CHANG ; Hoon KANG
Korean Journal of Dermatology 2024;62(10):541-549
Tattooing is an invasive procedure that involves the introduction of permanent pigments into the dermis, and is categorized as a medical procedure in Korea. Despite the medical, cosmetic, and aesthetic purposes of tattooing, legislative proposals to allow non-medical personnel to perform tattooing have consistently been rejected on public health grounds, prioritizing health and safety considerations. Professional organizations have maintained a consistent position, highlighting the risks of allowing non-medical individuals to perform tattooing. These risks include procedural complications, use of unsafe practices, and inadequate legal frameworks to ensure accountability.Addressing such issues requires careful consideration beyond economic or convenience factors, with an emphasis on public health policies. To address these concerns, the Korean Dermatological Research Foundation convened its 1st Policy Forum on October 6, 2024. The forum discussed the safety aspects, medical complications, and legal implications of tattooing performed by non-medical personnel. These findings highlight the significant risks and regulatory gaps associated with such practices, underscoring the need for a comprehensive review and stringent regulations to protect public health.
7.A Phase II Trial of S-1 and Oxaliplatin in Patients with Metastatic Breast Cancer Previously Treated with Anthracycline and Taxane (KCSG-BR07-03)
Dae-Won LEE ; Bhumsuk KEAM ; Keun Seok LEE ; Jin-Hee AHN ; Joohyuk SOHN ; Jin Seok AHN ; Moon Hee LEE ; Jee Hyun KIM ; Kyung Eun LEE ; Hyo Jung KIM ; Si-Young KIM ; Yeon Hee PARK ; Chan-Young OCK ; Kyung-Hun LEE ; Sae-Won HAN ; Sung-Bae KIM ; Young Hyuck IM ; Hyun Cheol CHUNG ; Do-Youn OH ; Seock-Ah IM
Cancer Research and Treatment 2023;55(2):523-530
Purpose:
This single-arm phase II trial investigate the efficacy and safety of S-1 plus oxaliplatin (SOX) in patients with metastatic breast cancer.
Materials and Methods:
Patients with metastatic breast cancer previously treated with anthracyclines and taxanes were enrolled. Patients received S-1 (40-60 mg depending on patient’s body surface area, twice a day, day 1-14) and oxaliplatin (130 mg/m2, day 1) in 3 weeks cycle until disease progression or unacceptable toxicity. The primary endpoint was objective response rate (ORR) according to Response Evaluation Criteria in Solid Tumor 1.1. Secondary endpoints included time-to-progression (TTP), duration-of-response (DoR), overall survival (OS), and adverse events.
Results:
A total of 87 patients were enrolled from 11 institutions in Korea. Hormone receptor was positive in 54 (62.1%) patients and six (6.9%) had human epidermal growth factor receptor 2–positive disease. Forty-eight patients (85.1%) had visceral metastasis and 74 (55.2%) had more than three sites of metastases. The ORR of SOX regimen was 38.5% (95% confidence interval [CI], 26.9 to 50.0) with a median TTP of 6.0 months (95% CI, 5.1 to 6.9). Median DoR and OS were 10.3 months (95% CI, 5.5 to 15.1) and 19.4 (95% CI, not estimated) months, respectively. Grade 3 or 4 neutropenia was reported in 28 patients (32.1%) and thrombocytopenia was observed in 23 patients (26.6%).
Conclusion
This phase II study showed that SOX regimen is a reasonable option in metastatic breast cancer previously treated with anthracyclines and taxanes.
8.Long-term cardiovascular events in hypertensive patients: full report of the Korean Hypertension Cohort
Jin Young LEE ; Jean Kyung BAK ; Mina KIM ; Ho-Gyun SHIN ; Kyun-Ik PARK ; Seung-Pyo LEE ; Hee-Sun LEE ; Ju-Yeun LEE ; Kwang-il KIM ; Si-Hyuck KANG ; Jang Hoon LEE ; Se Yong JANG ; Ju-Hee LEE ; Kye Hun KIM ; Jae Yeong CHO ; Jae-Hyeong PARK ; Sue K. PARK ; Hae-Young LEE
The Korean Journal of Internal Medicine 2023;38(1):56-67
Background/Aims:
This study evaluated the long-term cardiovascular complications among Korean patients with hypertension and compared them with that of controls without hypertension.
Methods:
The Korean Hypertension Cohort (KHC) enrolled 11,043 patients with hypertension and followed them for more than 10 years. Age- and sex-matched controls without hypertension were enrolled at a 1:10 ratio. We compared the incidence of cardiovascular events and death among patients and controls without hypertension.
Results:
The mean age was 59 years, and 34.8% and 16.5% of the patients belonged to the high and moderate cardiovascular risk groups, respectively. During the 10-year follow-up, 1,591 cardiovascular events (14.4%) with 588 deaths (5.3%) occurred among patients with hypertension and 7,635 cardiovascular events (6.9%) with 4,826 deaths (4.4%) occurred among controls. Even the low-risk population with hypertension showed a higher cardiovascular event rate than the population without hypertension. Although blood pressure measurements in the clinic showed remarkable inaccuracy compared with those measured in the national health examinations, systolic blood pressure (SBP) ≥ 150 mmHg was significantly associated with a higher risk of cardiovascular events.
Conclusions
This long-term follow-up study confirmed the cardiovascular event rates among Korean hypertensive patients were substantial, reaching 15% in 10 years. SBP levels ≥ 150 mmHg were highly associated with occurrence of cardiovascular event rates.
9.Comparison of Factors Associated With Direct Versus Transferred-in Admission to Government-Designated Regional Centers Between Acute Ischemic Stroke and Myocardial Infarction in Korea
Dae-Hyun KIM ; Seok-Joo MOON ; Juneyoung LEE ; Jae-Kwan CHA ; Moo Hyun KIM ; Jong-Sung PARK ; Byeolnim BAN ; Jihoon KANG ; Beom Joon KIM ; Won-Seok KIM ; Chang-Hwan YOON ; Heeyoung LEE ; Seongheon KIM ; Eun Kyoung KANG ; Ae-Young HER ; Cindy W YOON ; Joung-Ho RHA ; Seong-Ill WOO ; Won Kyung LEE ; Han-Young JUNG ; Jang Hoon LEE ; Hun Sik PARK ; Yang-Ha HWANG ; Keonyeop KIM ; Rock Bum KIM ; Nack-Cheon CHOI ; Jinyong HWANG ; Hyun-Woong PARK ; Ki Soo PARK ; SangHak YI ; Jae Young CHO ; Nam-Ho KIM ; Kang-Ho CHOI ; Juhan KIM ; Jae-Young HAN ; Jay Chol CHOI ; Song-Yi KIM ; Joon-Hyouk CHOI ; Jei KIM ; Min Kyun SOHN ; Si Wan CHOI ; Dong-Ick SHIN ; Sang Yeub LEE ; Jang-Whan BAE ; Kun Sei LEE ; Hee-Joon BAE
Journal of Korean Medical Science 2022;37(42):e305-
Background:
There has been no comparison of the determinants of admission route between acute ischemic stroke (AIS) and acute myocardial infarction (AMI). We examined whether factors associated with direct versus transferred-in admission to regional cardiocerebrovascular centers (RCVCs) differed between AIS and AMI.
Methods:
Using a nationwide RCVC registry, we identified consecutive patients presenting with AMI and AIS between July 2016 and December 2018. We explored factors associated with direct admission to RCVCs in patients with AIS and AMI and examined whether those associations differed between AIS and AMI, including interaction terms between each factor and disease type in multivariable models. To explore the influence of emergency medical service (EMS) paramedics on hospital selection, stratified analyses according to use of EMS were also performed.
Results:
Among the 17,897 and 8,927 AIS and AMI patients, 66.6% and 48.2% were directly admitted to RCVCs, respectively. Multivariable analysis showed that previous coronary heart disease, prehospital awareness, higher education level, and EMS use increased the odds of direct admission to RCVCs, but the odds ratio (OR) was different between AIS and AMI (for the first 3 factors, AMI > AIS; for EMS use, AMI < AIS). EMS use was the single most important factor for both AIS and AMI (OR, 4.72 vs. 3.90). Hypertension and hyperlipidemia increased, while living alone decreased the odds of direct admission only in AMI;additionally, age (65–74 years), previous stroke, and presentation during non-working hours increased the odds only in AIS. EMS use weakened the associations between direct admission and most factors in both AIS and AMI.
Conclusions
Various patient factors were differentially associated with direct admission to RCVCs between AIS and AMI. Public education for symptom awareness and use of EMS is essential in optimizing the transportation and hospitalization of patients with AMI and AIS.
10.Comparison of physical work intensity of emergency medicine (EM) residents and non-EM residents, measured on the smartwatch: a prospective study
Dong Hyun LEE ; Ji Hun KANG ; Jae Kwang YU ; Jae Gu JI ; Si Won LEE ; Chul Ho PARK ; Yoo Sang YOON ; Yang Weon KIM
Journal of the Korean Society of Emergency Medicine 2022;33(2):211-219
Objective:
The purpose of this study was to compare the physical work intensity of emergency medicine (EM) and non-EM residents during a 24-hour work duty cycle using a smartwatch.
Methods:
This study was conducted for a month from 7 May to 4 June 2021. A total of 27 residents submitted their consent to be recruited as subjects for the study. We distributed a smartwatch to each of the participants and measured their physical work intensity. Twenty non-EM residents wore a smartwatch for a week. Also, seven EM residents wore a watch during the time they were on 24-hour duty for the whole research period. After finishing their 24-hour duty, participants took off the smartwatch and stopped recording their physical activities. Sixty-five samples were matched for comparison between the non-EM and EM residents. Each of the samples comprised a pair of 24-hour records of EM and non-EM residents. The data were matched to ensure the same date and grade and thus control the variables.
Results:
The results of this study showed that the maximum heart rate of the EM residents was 129.7±3.8 beats/min, which was higher than that of the non-EM residents. A comparison of the sleep hours during the 24-hour duty showed that the average sleep time of the EM residents was 156.9±84.8 minutes, which was significantly lower than that of the non-EM residents. However, calorie consumption, moving distance, and step count during the 24-hour duty cycle showed no significant difference between the EM and non-EM residents.
Conclusion
The maximum heart rate was higher among EM residents during their 24-hour work duty compared to the non-EM residents. In addition, the sleep time of the EM residents was significantly lower than that of the non-EM residents.

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