1.Outcomes of Deferring Percutaneous Coronary Intervention Without Physiologic Assessment for Intermediate Coronary Lesions
Jihoon KIM ; Seong-Hoon LIM ; Joo-Yong HAHN ; Jin-Ok JEONG ; Yong Hwan PARK ; Woo Jung CHUN ; Ju Hyeon OH ; Dae Kyoung CHO ; Yu Jeong CHOI ; Eul-Soon IM ; Kyung-Heon WON ; Sung Yun LEE ; Sang-Wook KIM ; Ki Hong CHOI ; Joo Myung LEE ; Taek Kyu PARK ; Jeong Hoon YANG ; Young Bin SONG ; Seung-Hyuk CHOI ; Hyeon-Cheol GWON
Korean Circulation Journal 2025;55(3):185-195
Background and Objectives:
Outcomes of deferring percutaneous coronary intervention (PCI) without invasive physiologic assessment for intermediate coronary lesions is uncertain.We sought to compare long-term outcomes between medical treatment and PCI of intermediate lesions without invasive physiologic assessment.
Methods:
A total of 899 patients with intermediate coronary lesions between 50% and 70% diameter-stenosis were randomized to the conservative group (n=449) or the aggressive group (n=450). For intermediate lesions, PCI was performed in the aggressive group, but was deferred in the conservative group. The primary endpoint was major adverse cardiac events (MACE, a composite of all-cause death, myocardial infarction [MI], or ischemia-driven any revascularization) at 3 years.
Results:
The number of treated lesions per patient was 0.8±0.9 in the conservative group and 1.7±0.9 in the aggressive group (p=0.001). At 3 years, the conservative group had a significantly higher incidence of MACE than the aggressive group (13.8% vs. 9.3%; hazard ratio [HR], 1.49; 95% confidence interval [CI], 1.00–2.21; p=0.049), mainly driven by revascularization of target intermediate lesion (6.5% vs. 1.1%; HR, 5.69; 95% CI, 2.20–14.73;p<0.001). Between 1 and 3 years after the index procedure, compared to the aggressive group, the conservative group had significantly higher incidence of cardiac death or MI (3.2% vs.0.7%; HR, 4.34; 95% CI, 1.24–15.22; p=0.022) and ischemia-driven any revascularization.
Conclusions
For intermediate lesions, medical therapy alone, guided only by angiography, was associated with a higher risk of MACE at 3 years compared with performing PCI, mainly due to increased revascularization.
2.Outcomes of Deferring Percutaneous Coronary Intervention Without Physiologic Assessment for Intermediate Coronary Lesions
Jihoon KIM ; Seong-Hoon LIM ; Joo-Yong HAHN ; Jin-Ok JEONG ; Yong Hwan PARK ; Woo Jung CHUN ; Ju Hyeon OH ; Dae Kyoung CHO ; Yu Jeong CHOI ; Eul-Soon IM ; Kyung-Heon WON ; Sung Yun LEE ; Sang-Wook KIM ; Ki Hong CHOI ; Joo Myung LEE ; Taek Kyu PARK ; Jeong Hoon YANG ; Young Bin SONG ; Seung-Hyuk CHOI ; Hyeon-Cheol GWON
Korean Circulation Journal 2025;55(3):185-195
Background and Objectives:
Outcomes of deferring percutaneous coronary intervention (PCI) without invasive physiologic assessment for intermediate coronary lesions is uncertain.We sought to compare long-term outcomes between medical treatment and PCI of intermediate lesions without invasive physiologic assessment.
Methods:
A total of 899 patients with intermediate coronary lesions between 50% and 70% diameter-stenosis were randomized to the conservative group (n=449) or the aggressive group (n=450). For intermediate lesions, PCI was performed in the aggressive group, but was deferred in the conservative group. The primary endpoint was major adverse cardiac events (MACE, a composite of all-cause death, myocardial infarction [MI], or ischemia-driven any revascularization) at 3 years.
Results:
The number of treated lesions per patient was 0.8±0.9 in the conservative group and 1.7±0.9 in the aggressive group (p=0.001). At 3 years, the conservative group had a significantly higher incidence of MACE than the aggressive group (13.8% vs. 9.3%; hazard ratio [HR], 1.49; 95% confidence interval [CI], 1.00–2.21; p=0.049), mainly driven by revascularization of target intermediate lesion (6.5% vs. 1.1%; HR, 5.69; 95% CI, 2.20–14.73;p<0.001). Between 1 and 3 years after the index procedure, compared to the aggressive group, the conservative group had significantly higher incidence of cardiac death or MI (3.2% vs.0.7%; HR, 4.34; 95% CI, 1.24–15.22; p=0.022) and ischemia-driven any revascularization.
Conclusions
For intermediate lesions, medical therapy alone, guided only by angiography, was associated with a higher risk of MACE at 3 years compared with performing PCI, mainly due to increased revascularization.
3.Outcomes of Deferring Percutaneous Coronary Intervention Without Physiologic Assessment for Intermediate Coronary Lesions
Jihoon KIM ; Seong-Hoon LIM ; Joo-Yong HAHN ; Jin-Ok JEONG ; Yong Hwan PARK ; Woo Jung CHUN ; Ju Hyeon OH ; Dae Kyoung CHO ; Yu Jeong CHOI ; Eul-Soon IM ; Kyung-Heon WON ; Sung Yun LEE ; Sang-Wook KIM ; Ki Hong CHOI ; Joo Myung LEE ; Taek Kyu PARK ; Jeong Hoon YANG ; Young Bin SONG ; Seung-Hyuk CHOI ; Hyeon-Cheol GWON
Korean Circulation Journal 2025;55(3):185-195
Background and Objectives:
Outcomes of deferring percutaneous coronary intervention (PCI) without invasive physiologic assessment for intermediate coronary lesions is uncertain.We sought to compare long-term outcomes between medical treatment and PCI of intermediate lesions without invasive physiologic assessment.
Methods:
A total of 899 patients with intermediate coronary lesions between 50% and 70% diameter-stenosis were randomized to the conservative group (n=449) or the aggressive group (n=450). For intermediate lesions, PCI was performed in the aggressive group, but was deferred in the conservative group. The primary endpoint was major adverse cardiac events (MACE, a composite of all-cause death, myocardial infarction [MI], or ischemia-driven any revascularization) at 3 years.
Results:
The number of treated lesions per patient was 0.8±0.9 in the conservative group and 1.7±0.9 in the aggressive group (p=0.001). At 3 years, the conservative group had a significantly higher incidence of MACE than the aggressive group (13.8% vs. 9.3%; hazard ratio [HR], 1.49; 95% confidence interval [CI], 1.00–2.21; p=0.049), mainly driven by revascularization of target intermediate lesion (6.5% vs. 1.1%; HR, 5.69; 95% CI, 2.20–14.73;p<0.001). Between 1 and 3 years after the index procedure, compared to the aggressive group, the conservative group had significantly higher incidence of cardiac death or MI (3.2% vs.0.7%; HR, 4.34; 95% CI, 1.24–15.22; p=0.022) and ischemia-driven any revascularization.
Conclusions
For intermediate lesions, medical therapy alone, guided only by angiography, was associated with a higher risk of MACE at 3 years compared with performing PCI, mainly due to increased revascularization.
4.Outcomes of Deferring Percutaneous Coronary Intervention Without Physiologic Assessment for Intermediate Coronary Lesions
Jihoon KIM ; Seong-Hoon LIM ; Joo-Yong HAHN ; Jin-Ok JEONG ; Yong Hwan PARK ; Woo Jung CHUN ; Ju Hyeon OH ; Dae Kyoung CHO ; Yu Jeong CHOI ; Eul-Soon IM ; Kyung-Heon WON ; Sung Yun LEE ; Sang-Wook KIM ; Ki Hong CHOI ; Joo Myung LEE ; Taek Kyu PARK ; Jeong Hoon YANG ; Young Bin SONG ; Seung-Hyuk CHOI ; Hyeon-Cheol GWON
Korean Circulation Journal 2025;55(3):185-195
Background and Objectives:
Outcomes of deferring percutaneous coronary intervention (PCI) without invasive physiologic assessment for intermediate coronary lesions is uncertain.We sought to compare long-term outcomes between medical treatment and PCI of intermediate lesions without invasive physiologic assessment.
Methods:
A total of 899 patients with intermediate coronary lesions between 50% and 70% diameter-stenosis were randomized to the conservative group (n=449) or the aggressive group (n=450). For intermediate lesions, PCI was performed in the aggressive group, but was deferred in the conservative group. The primary endpoint was major adverse cardiac events (MACE, a composite of all-cause death, myocardial infarction [MI], or ischemia-driven any revascularization) at 3 years.
Results:
The number of treated lesions per patient was 0.8±0.9 in the conservative group and 1.7±0.9 in the aggressive group (p=0.001). At 3 years, the conservative group had a significantly higher incidence of MACE than the aggressive group (13.8% vs. 9.3%; hazard ratio [HR], 1.49; 95% confidence interval [CI], 1.00–2.21; p=0.049), mainly driven by revascularization of target intermediate lesion (6.5% vs. 1.1%; HR, 5.69; 95% CI, 2.20–14.73;p<0.001). Between 1 and 3 years after the index procedure, compared to the aggressive group, the conservative group had significantly higher incidence of cardiac death or MI (3.2% vs.0.7%; HR, 4.34; 95% CI, 1.24–15.22; p=0.022) and ischemia-driven any revascularization.
Conclusions
For intermediate lesions, medical therapy alone, guided only by angiography, was associated with a higher risk of MACE at 3 years compared with performing PCI, mainly due to increased revascularization.
5.Is endoscopic hemostasis safe and effective for delayed post-polypectomy bleeding?
Jae-Yong CHO ; Yunho JUNG ; Han Hee LEE ; Jung-Wook KIM ; Kee Myung LEE ; Hyun LIM ; Geun-Hyuk CHOI ; Seong Woo CHOI ; Bo-In LEE
International Journal of Gastrointestinal Intervention 2024;13(4):122-127
Background:
Delayed post-polypectomy bleeding (DPPB) is a serious complication of polypectomy that is poorly understood. The aim of this study was to evaluate the effectiveness of endoscopic hemostasis in managing DPPB and to identify associated risk factors.
Methods:
We retrospectively analyzed 289 patients who experienced DPPB (≥ 24 hours after polypectomy) and underwent endoscopic hemostasis at five university hospitals between 2005 and 2018. Patient characteristics, polyp size, technical factors, rebleeding, complications, and length of hospitalization were assessed.
Results:
Endoscopic hemostasis was successful in all 289 cases of DPPB. The techniques and devices employed included epinephrine injection (24.9%), argon plasma coagulation (18.0%), hemostatic forceps (10.7%), and hemoclips (87.9%). Rebleeding occurred in 15 cases (5.2%) after initial endoscopic hemostasis. The incidence of rebleeding was significantly associated with polyp size (< 10 mm: 2.8%, 10 mm–19 mm: 5.6%, ≥ 20 mm: 13.5%, P = 0.030) and sedation status (yes: 1.8%, no: 7.3%, P = 0.040). However, hemostasis method, bleeding characteristics, and polyp location were not significantly linked to rebleeding. Multivariate analysis revealed that polyp size (odds ratio, 5.02; 95% confidence interval, 1.25–20.13; P = 0.023) was significantly associated with rebleeding after endoscopic hemostasis for DPPB. In all 15 cases of rebleeding, a second endoscopic hemostasis was successfully performed without the need for embolization or surgical intervention. No perforations occurred during the first or second endoscopic hemostatic procedures.
Conclusion
Polyp size and sedation status were associated with rebleeding after endoscopic hemostasis for DPPB. As an intervention for DPPB, endoscopic hemostasis appears safe and effective.
6.Is endoscopic hemostasis safe and effective for delayed post-polypectomy bleeding?
Jae-Yong CHO ; Yunho JUNG ; Han Hee LEE ; Jung-Wook KIM ; Kee Myung LEE ; Hyun LIM ; Geun-Hyuk CHOI ; Seong Woo CHOI ; Bo-In LEE
International Journal of Gastrointestinal Intervention 2024;13(4):122-127
Background:
Delayed post-polypectomy bleeding (DPPB) is a serious complication of polypectomy that is poorly understood. The aim of this study was to evaluate the effectiveness of endoscopic hemostasis in managing DPPB and to identify associated risk factors.
Methods:
We retrospectively analyzed 289 patients who experienced DPPB (≥ 24 hours after polypectomy) and underwent endoscopic hemostasis at five university hospitals between 2005 and 2018. Patient characteristics, polyp size, technical factors, rebleeding, complications, and length of hospitalization were assessed.
Results:
Endoscopic hemostasis was successful in all 289 cases of DPPB. The techniques and devices employed included epinephrine injection (24.9%), argon plasma coagulation (18.0%), hemostatic forceps (10.7%), and hemoclips (87.9%). Rebleeding occurred in 15 cases (5.2%) after initial endoscopic hemostasis. The incidence of rebleeding was significantly associated with polyp size (< 10 mm: 2.8%, 10 mm–19 mm: 5.6%, ≥ 20 mm: 13.5%, P = 0.030) and sedation status (yes: 1.8%, no: 7.3%, P = 0.040). However, hemostasis method, bleeding characteristics, and polyp location were not significantly linked to rebleeding. Multivariate analysis revealed that polyp size (odds ratio, 5.02; 95% confidence interval, 1.25–20.13; P = 0.023) was significantly associated with rebleeding after endoscopic hemostasis for DPPB. In all 15 cases of rebleeding, a second endoscopic hemostasis was successfully performed without the need for embolization or surgical intervention. No perforations occurred during the first or second endoscopic hemostatic procedures.
Conclusion
Polyp size and sedation status were associated with rebleeding after endoscopic hemostasis for DPPB. As an intervention for DPPB, endoscopic hemostasis appears safe and effective.
7.Is endoscopic hemostasis safe and effective for delayed post-polypectomy bleeding?
Jae-Yong CHO ; Yunho JUNG ; Han Hee LEE ; Jung-Wook KIM ; Kee Myung LEE ; Hyun LIM ; Geun-Hyuk CHOI ; Seong Woo CHOI ; Bo-In LEE
International Journal of Gastrointestinal Intervention 2024;13(4):122-127
Background:
Delayed post-polypectomy bleeding (DPPB) is a serious complication of polypectomy that is poorly understood. The aim of this study was to evaluate the effectiveness of endoscopic hemostasis in managing DPPB and to identify associated risk factors.
Methods:
We retrospectively analyzed 289 patients who experienced DPPB (≥ 24 hours after polypectomy) and underwent endoscopic hemostasis at five university hospitals between 2005 and 2018. Patient characteristics, polyp size, technical factors, rebleeding, complications, and length of hospitalization were assessed.
Results:
Endoscopic hemostasis was successful in all 289 cases of DPPB. The techniques and devices employed included epinephrine injection (24.9%), argon plasma coagulation (18.0%), hemostatic forceps (10.7%), and hemoclips (87.9%). Rebleeding occurred in 15 cases (5.2%) after initial endoscopic hemostasis. The incidence of rebleeding was significantly associated with polyp size (< 10 mm: 2.8%, 10 mm–19 mm: 5.6%, ≥ 20 mm: 13.5%, P = 0.030) and sedation status (yes: 1.8%, no: 7.3%, P = 0.040). However, hemostasis method, bleeding characteristics, and polyp location were not significantly linked to rebleeding. Multivariate analysis revealed that polyp size (odds ratio, 5.02; 95% confidence interval, 1.25–20.13; P = 0.023) was significantly associated with rebleeding after endoscopic hemostasis for DPPB. In all 15 cases of rebleeding, a second endoscopic hemostasis was successfully performed without the need for embolization or surgical intervention. No perforations occurred during the first or second endoscopic hemostatic procedures.
Conclusion
Polyp size and sedation status were associated with rebleeding after endoscopic hemostasis for DPPB. As an intervention for DPPB, endoscopic hemostasis appears safe and effective.
8.Efficacy and Safety of Metformin and Atorvastatin Combination Therapy vs. Monotherapy with Either Drug in Type 2 Diabetes Mellitus and Dyslipidemia Patients (ATOMIC): Double-Blinded Randomized Controlled Trial
Jie-Eun LEE ; Seung Hee YU ; Sung Rae KIM ; Kyu Jeung AHN ; Kee-Ho SONG ; In-Kyu LEE ; Ho-Sang SHON ; In Joo KIM ; Soo LIM ; Doo-Man KIM ; Choon Hee CHUNG ; Won-Young LEE ; Soon Hee LEE ; Dong Joon KIM ; Sung-Rae CHO ; Chang Hee JUNG ; Hyun Jeong JEON ; Seung-Hwan LEE ; Keun-Young PARK ; Sang Youl RHEE ; Sin Gon KIM ; Seok O PARK ; Dae Jung KIM ; Byung Joon KIM ; Sang Ah LEE ; Yong-Hyun KIM ; Kyung-Soo KIM ; Ji A SEO ; Il Seong NAM-GOONG ; Chang Won LEE ; Duk Kyu KIM ; Sang Wook KIM ; Chung Gu CHO ; Jung Han KIM ; Yeo-Joo KIM ; Jae-Myung YOO ; Kyung Wan MIN ; Moon-Kyu LEE
Diabetes & Metabolism Journal 2024;48(4):730-739
Background:
It is well known that a large number of patients with diabetes also have dyslipidemia, which significantly increases the risk of cardiovascular disease (CVD). This study aimed to evaluate the efficacy and safety of combination drugs consisting of metformin and atorvastatin, widely used as therapeutic agents for diabetes and dyslipidemia.
Methods:
This randomized, double-blind, placebo-controlled, parallel-group and phase III multicenter study included adults with glycosylated hemoglobin (HbA1c) levels >7.0% and <10.0%, low-density lipoprotein cholesterol (LDL-C) >100 and <250 mg/dL. One hundred eighty-five eligible subjects were randomized to the combination group (metformin+atorvastatin), metformin group (metformin+atorvastatin placebo), and atorvastatin group (atorvastatin+metformin placebo). The primary efficacy endpoints were the percent changes in HbA1c and LDL-C levels from baseline at the end of the treatment.
Results:
After 16 weeks of treatment compared to baseline, HbA1c showed a significant difference of 0.94% compared to the atorvastatin group in the combination group (0.35% vs. −0.58%, respectively; P<0.0001), whereas the proportion of patients with increased HbA1c was also 62% and 15%, respectively, showing a significant difference (P<0.001). The combination group also showed a significant decrease in LDL-C levels compared to the metformin group (−55.20% vs. −7.69%, P<0.001) without previously unknown adverse drug events.
Conclusion
The addition of atorvastatin to metformin improved HbA1c and LDL-C levels to a significant extent compared to metformin or atorvastatin alone in diabetes and dyslipidemia patients. This study also suggested metformin’s preventive effect on the glucose-elevating potential of atorvastatin in patients with type 2 diabetes mellitus and dyslipidemia, insufficiently controlled with exercise and diet. Metformin and atorvastatin combination might be an effective treatment in reducing the CVD risk in patients with both diabetes and dyslipidemia because of its lowering effect on LDL-C and glucose.
9.Enzalutamide Maintenance Following Docetaxel in Metastatic Castration-Naive Prostate Cancer: A Pilot Feasibility Study
Sung Hee LIM ; Sung Wook CHO ; Jae Hoon CHUNG ; Wan SONG ; Minyong KANG ; Hyun Hwan SUNG ; Hwang Gyun JEON ; Byong Chang JEONG ; Seong Il SEO ; Seong Soo JEON ; Se Hoon PARK
Journal of Urologic Oncology 2024;22(1):29-33
Purpose:
To assess the feasibility and short-term efficacy of maintenance enzalutamide following first-line docetaxel plus androgen deprivation therapy (ADT) in patients with high-volume, metastatic castration-naive prostate cancer (mCNPC).
Materials and Methods:
The present study included 38 consecutive patients with mCNPC who did not have disease progression with ADT plus docetaxel between October 2022 and October 2023. Patients received a switch maintenance therapy with enzalutamide until progression, unacceptable toxicity, or patient withdrawal. Endpoints included time to prostate-specific antigen (PSA) progression and safety.
Results:
Among the 38 patients, the median age was 68 years, and the most frequently observed metastatic site was bone (n=36), followed by lymph nodes (n=28), lung (n=8), and liver (n=1). The median duration of firstline docetaxel was 2.8 months (range, 2.7–5.0 months). At the time of commencing maintenance enzalutamide, the median PSA was 3.2 ng/mL (range, 0.01–258 ng/mL). Maintenance enzalutamide was generally welltolerated. A total of 11 patients (28%) discontinued enzalutamide, and the main reasons included adverse events (prolonged fatigue of grade 1 or 2, n=6), disease progression (n=3) and financial burdens (n=2). Median time to PSA progression was not reached, and 93% were PSA progression-free at 12 months.
Conclusions
Maintenance enzalutamide is a feasible treatment option with potential clinical benefit for patients with high-volume mCNPC who were progression-free after first-line ADT+docetaxel.
10.Lipid-Lowering Efficacy of Combination Therapy With ModerateIntensity Statin and Ezetimibe Versus High-Intensity Statin Monotherapy:A Randomized, Open-Label, NonInferiority Trial From Korea
Hyejung CHOI ; Si-Hyuck KANG ; Sang-Woo JEONG ; Chang-Hwan YOON ; Tae-Jin YOUN ; Woo Hyuk SONG ; Dong Woon JEON ; Sang Wook LIM ; Jun-Hee LEE ; Seong-Wook CHO ; In-Ho CHAE ; Cheol-Ho KIM
Journal of Lipid and Atherosclerosis 2023;12(3):277-289
Objective:
This phase IV, multicenter, randomized controlled, open-label, and parallel clinical trial aimed to compare the efficacy and safety of ezetimibe and moderate intensity rosuvastatin combination therapy to that of high intensity rosuvastatin monotherapy in patients with atherosclerotic cardiovascular disease (ASCVD).
Methods:
This study enrolled patients with ASCVD and after a four-week screening period, patients were randomly assigned to receive either rosuvastatin and ezetimibe (RE 10/10 group) or high-intensity rosuvastatin (R20 group) only in a 1:1 ratio. The primary outcome was the difference in the percent change in the mean low-density lipoprotein cholesterol (LDL-C) level from baseline to 12 weeks between two groups after treatment.
Results:
The study found that after 12 and 24 weeks of treatment, the RE10/10 group had a greater reduction in LDL-C level compared to the R20 group (−22.9±2.6% vs. −15.6 ± 2.5% [p=0.041] and −24.2±2.5% vs. −12.9±2.4% [p=0.001] at 12 and 24 weeks, respectively). Moreover, a greater number of patients achieved the target LDL-C level of ≤70 mg/dL after the treatment period in the combination group (74.6% vs. 59.9% [p=0.012] and 76.2% vs. 50.8% [p<0.001] at 12 and 24 weeks, respectively). Importantly, there were no significant differences in the occurrence of overall adverse events and adverse drug reactions between two groups.
Conclusion
Moderate-intensity rosuvastatin and ezetimibe combination therapy had better efficacy in lowering LDL-C levels without increasing adverse effects in patients with ASCVD than high-intensity rosuvastatin monotherapy.

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