Publications by authors named "Ji Seong Kim"

Background:  There is uncertainty regarding the impact of high-intensity statins on postoperative outcomes in patients undergoing surgical myocardial revascularization. This study was conducted to evaluate the impact of high-intensity statin treatment on the occurrence rate of new-onset postoperative atrial fibrillation (POAF) after off-pump coronary artery bypass grafting (OPCAB).

Methods:  Six hundred and thirteen patients (66.

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Article Synopsis
  • A study analyzed the benefits of performing multiple bypass grafts in patients with three-vessel disease (3VD) who underwent coronary artery bypass grafting (CABG).
  • The research included 1,008 patients who achieved complete revascularization and was focused on long-term outcomes over an average follow-up of about 86.6 months.
  • Findings indicated that patients with more than three distal grafts experienced lower rates of all-cause mortality and cardiac death compared to those with fewer grafts, suggesting potential benefits from more extensive grafting during surgery.
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Background: We evaluated the prevalence and outcomes of competitive flow in the terminal right coronary artery (RCA) graft after coronary artery bypass grafting (CABG) with left internal thoracic artery-based Y-composite grafting at 1 year after CABG.

Methods: We enrolled 642 patients who underwent Y-composite graft-based off-pump CABG with in situ left internal thoracic artery between 2014 and 2022. All patients underwent early postoperative angiography, and 1-year postoperative angiography was performed in 81.

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Transdermal rotigotine (RTG) therapy is prescribed to manage Parkinson's disease (Neupro® patch). However, its use is suffered from application site reactions. Herein, drug nanocrystalline suspension (NS)-loaded hydrogel (NS-HG) employing polysaccharides simultaneously as suspending agent and hydrogel matrix was constructed for transdermal delivery, with alleviated skin irritation.

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Objectives: This retrospective study was conducted to evaluate the impact of saphenous vein (SV) harvesting with versus without perivascular tissue on the 5-year angiographic patency in coronary artery bypass grafting.

Methods: Among the 944 patients who received coronary artery bypass grafting between 2010 and 2015, 579 patients who received off-pump coronary artery bypass grafting using 1 SV as a Y-composite graft based on the in situ left internal thoracic artery were enrolled. SV harvesting was performed using no-touch technique without perivascular tissue (the NoPVT group) in 342 patients and with perivascular tissue (the PVT group) in 237 patients.

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Article Synopsis
  • This study aimed to assess the short- and long-term outcomes of performing surgical ablation (SA) for atrial fibrillation (AF) in patients undergoing isolated aortic valve replacement (AVR) using data from a national health database in Korea.
  • Among 23,332 patients who had AVR between 2003 and 2019, 1,741 with AF were analyzed and matched for comparison, focusing on those with and without SA.
  • The results indicated that while overall survival and early postoperative complications were similar for both groups, those who received SA had a significantly lower rate of new-onset late ischemic stroke, suggesting the need for SA in AF patients undergoing AVR to prevent strokes.
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Background:  This study was conducted to evaluate whether myocardial viability assessed with cardiac magnetic resonance (CMR) affected long-term clinical outcomes after coronary artery bypass grafting (CABG) in patients with ischemic cardiomyopathy (ICMP).

Methods:  Preoperative CMR with late gadolinium enhancement (LGE) was performed in 103 patients (64.9 ± 10.

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Background: Edwards Intuity is recognized as a relatively contraindicated bioprosthesis for bicuspid aortic valve disease. This study compared the early echocardiographic and clinical outcomes of rapid-deployment aortic valve replacement for bicuspid versus tricuspid aortic valves.

Methods: Of 278 patients who underwent rapid-deployment aortic valve replacement using Intuity at Seoul National University Hospital, 252 patients were enrolled after excluding those with pure aortic regurgitation, prosthetic valve failure, endocarditis, and quadricuspid valves.

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Background:  This randomized controlled trial was designed to compare 1-year hemodynamic performances and clinical outcomes after aortic valve replacement (AVR) using a recently introduced (the AVALUS group) and worldwide used (the CEPME group) bovine pericardial bioprostheses.

Methods:  Patients were screened to enroll 70 patients in each group based on a noninferiority design. The primary endpoint of the trial was the mean pressure gradient across the aortic valve (AVMPG) at 1 year after surgery.

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Background: A randomized controlled trial was designed to compare 1-year morphologic changes of the no-touch saphenous vein (SV) as a Y-composite graft (composite group) vs an aortocoronary graft (aorta group) in coronary artery bypass grafting. This study evaluated early clinical and angiographic outcomes as a preliminary analysis.

Methods: The primary end point of the trial was the intima-media thickness measured by intravascular ultrasound at 1-year angiographic follow-up.

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Background: Edwards Intuity is designed for rapid deployment based on the structure of Magna Ease. This study was conducted to compare early hemodynamic performance between the two valves.

Methods: Patients who underwent aortic valve replacement (AVR) using Edwards Intuity or Carpentier-Edwards PERIMOUNT Magna Ease in our institution from June 2016 to July 2021 were enrolled.

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Objectives: This study evaluated suture tie-down forces and cyclic contractile forces (CCFs) after undersized tricuspid annuloplasty using a hybrid band.

Methods: Downsized tricuspid annuloplasty was planned in adult male sheep using 8 force transducers attached from the septal to the anterior annular areas of the ring (segments 1 and 2, flexible septal; segments 3 and 4, semi-rigid posterior; segments 5 and 6, semi-rigid anterior; segments 7 and 8, flexible anterior). CCFs were analysed at 3 different levels of peak right ventricular pressure (RVP): 30, 50 and 70 mmHg.

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Background: This study evaluated the outcome of surgical ablation (SA) for atrial fibrillation (AF) concomitant with redo left-sided valvular surgery.

Methods: The study enrolled 224 AF patients (paroxysmal: 13 patients, persistent: 76 patients, long-standing persistent AF: 135 patients) undergoing redo open heart surgery for left-sided valve disease. The early results and long-term clinical outcomes were compared between those who underwent concomitant SA for AF (SA group) and did not (NSA group).

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Objectives: The early and long-term clinical outcomes of bovine versus porcine tricuspid valve replacement (TVR) were compared based on the nationwide database from the National Health Insurance Service.

Methods: Of 1464 patients who underwent TVR from 2002 to 2018 in Korea, 541 were enrolled after excluding mechanical TVR, re-TVR, complex congenital heart disease, Ebstein anomaly and age <19 years at operation. Bovine (group B) and porcine valves (group P) were used in 342 and 199 patients, respectively.

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Background: This study was conducted to evaluate whether the in situ right internal thoracic artery (RITA) can be an effective alternative to the left internal thoracic artery (LITA) as a single-inflow source in coronary artery bypass grafting (CABG).

Methods: Between 2006 and 2018, 73 patients underwent CABG with the composite grafting based on the in situ RITA as a single-inflow source (the RITA group). Angiographic patency and clinical outcomes were evaluated.

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Objectives: Data on the safety and efficacy of clopidogrel (CPD) monotherapy after coronary artery bypass grafting (CABG) are limited. We compared the clinical outcomes and graft patency rates during 4 years in CABG patients who maintained CPD or aspirin after 1 year of dual antiplatelet therapy (DAPT) use.

Methods: A total of 671 patients who maintained 1-year DAPT after CABG with all grafts patent on one-year follow-up angiography and switched to single antiplatelet therapy (SAPT) using CPD (n = 272) or aspirin (n = 399) between January 2009 and December 2015 were enrolled.

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Background:  This study aimed to compare long-term outcomes after tricuspid valve (TV) repair (TVr) with those after TV replacement (TVR) by adjusting the right ventricular (RV) volume and function.

Methods:  We enrolled 147 patients who underwent TVr ( = 78) and TVR ( = 69) for grade 3 or 4 tricuspid regurgitation and had preoperative cardiac magnetic resonance data. Long-term clinical outcomes were compared between the two groups using inverse probability treatment weighting (IPTW) to adjust for differences in preoperative characteristics between the two groups.

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Objectives: We compared early and long-term clinical outcomes of bioprosthetic versus mechanical tricuspid valve replacement in a nationwide study based on the database from the National Health Insurance Service.

Methods: Of 1425 patients who underwent tricuspid valve replacement from 2003 to 2018, 1241 patients were enrolled after excluding retricuspid valve replacement, complex congenital heart disease, Ebstein anomaly, and age less than 18 years at operation. Bioprostheses (group B) and mechanical prostheses (group M) were used in 562 patients (45.

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Article Synopsis
  • Point-of-care testing (POCT) coagulometers, like CoaguChek XS Plus, show significant discrepancies in INR results compared to conventional lab tests (ACL TOP 750) at high INR ranges in patients on warfarin therapy.
  • * A study analyzing 400 samples revealed that the difference in INR values increases as INR levels rise, with ACL TOP 750 demonstrating better performance for thrombin assessment and stronger correlations with coagulation factors.
  • * The findings suggest that decreases in vitamin K-dependent factors contribute to these discrepancies, indicating that confirmatory laboratory tests are essential when dealing with high INR values for reliability.
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Background: This study was conducted to evaluate the impact of functional and anatomic complete revascularization on long-term clinical outcomes after coronary artery bypass grafting (CABG).

Methods: Of 2034 patients who underwent primary isolated CABG between 2006 and 2017, 1162 patients who underwent off-pump CABG for 3-vessel disease and for whom data on functional and anatomic completeness of revascularization were available on the basis of preoperative myocardial single photon emission computed tomography and early postoperative graft angiography were enrolled. The median follow-up duration was 82.

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Objectives: This study compared the clinical outcomes of bovine and porcine bioprosthetic valves based on structural valve deterioration (SVD) and valve haemodynamic deterioration (VHD) in the aortic position.

Methods: From January 1995 to December 2014, patients who underwent aortic valve replacement (AVR) using a bovine pericardial valve or porcine valve were enrolled. SVD and VHD were defined according to the mean transprosthetic gradient and the grade of aortic regurgitation on transthoracic echocardiography.

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Article Synopsis
  • - This study assessed the mid-term results of rapid-deployment aortic valve replacement (AVR) using the Edwards Intuity valve in 215 patients, with an average follow-up of 22 months.
  • - The majority of patients had favorable outcomes, with a 3-year survival rate of 92.3%, and most experienced only transient heart block; only a small fraction required permanent pacemakers.
  • - The hemodynamic performance of the valves was also promising, showing low pressure gradients both early post-surgery and at the one-year mark, indicating effective heart function following the procedure.
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Objectives: We evaluated the occurrence rate of competitive flow and the fate of grafts of left internal thoracic artery (LITA)-to-left anterior descending coronary artery (LAD) anastomosis after coronary artery bypass grafting with Y-composite grafts using early and 1-year angiography.

Methods: From 2008 to 2017, 923 patients underwent off-pump coronary artery bypass grafting using Y-composite grafting based on the in situ LITA. Early postoperative angiography was performed for all patients.

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Background: A randomized controlled trial was designed to compare 1-year hemodynamic profiles and clinical outcomes after bioprosthetic aortic valve replacement (AVR) using a recently introduced (study group) and world-widely used (control group) bovine pericardial bioprostheses. This study evaluated early postoperative outcomes as a preliminary analysis.

Methods: The primary end point of the trial was the mean pressure gradient across the aortic valve (AVMPG) at 1 year after surgery.

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The phenotypic effect of the knockdown/out of AGAMOUS clade MADS-box gene SlMBP3 in tomato was evaluated using a transferred DNA (T-DNA)-tagged mutant of SlMBP3 and SlMBP3-RNA interference lines. SlMBP3 was preferentially expressed in the locular tissue of fruit and the seed coat combined with the endoderm. Consistent with where SlMBP3 is expressed, the SlMBP3-knockout/down lines showed non-liquefied locular tissues and increased number of seed hairs than the wild type (WT).

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