Kyong Jin Lee
University of Toronto
Internal medicineRadiologyBalloonSurgeryMagnetic resonance imagingBlood flowCardiologyHemodynamicsPediatricsNorwood procedureSurvival rateCoarctation of the aortaArteryCardiac catheterizationStentTetralogy of FallotVentricleHypoplastic left heart syndromeAortaStenosisPulmonary arteryAortic archTransplantationAnesthesiaDiastoleMedicineBlood pressure
28Publications
19H-index
1,285Citations
Publications 28
Newest
#1W. H. Lu (NYMU: National Yang-Ming University)H-Index: 1
#2Chun Po Steve Fan (U of T: University of Toronto)H-Index: 4
Last. Lee N. Benson (U of T: University of Toronto)H-Index: 74
view all 6 authors...
The aim of this study was to explore the clinical impact of transverse aortic arch hypoplasia (TAH) after stent implementation for isthmal coarctation of the aorta (CoA). From a retrospective chart review, 51 children (median age 11.1 years) were identified who had TAH and a CoA stent implanted between 10/1995 and 4/2015. Arm–leg cuff blood pressure measurements, echocardiographic arch imaging, and 24-h ambulatory blood pressure monitoring, prior to and after stent implantation, were reviewed. A...
4 CitationsSource
#1Sarah T Plummer (Duke University)H-Index: 1
#2Christoph P. Hornik (Duke University)H-Index: 28
Last. Kevin D. Hill (Duke University)H-Index: 32
view all 19 authors...
Abstract Objectives Aortic arch reconstruction in children with single ventricle lesions may predispose to circulatory inefficiency and maladaptive physiology leading to increased myocardial workload. We sought to describe neoaortic anatomy and physiology, risk factors for abnormalities, and impact on right ventricular function in patients with single right ventricle lesions after arch reconstruction. Methods Prestage II aortic angiograms from the Pediatric Heart Network Single Ventricle Reconst...
12 CitationsSource
#1Sharon Borik (U of T: University of Toronto)H-Index: 3
#2Sunder Devadas (U of T: University of Toronto)H-Index: 1
Last. Lee N. Benson (U of T: University of Toronto)H-Index: 74
view all 6 authors...
Objectives To assess the effectiveness of radiation-reduction measures implemented during pediatric catheterization, and provide data on the radiation doses for common interventional and diagnostic procedures, indexed to body weight. Background Ionizing radiation exposure must be minimized to “as low as reasonably achievable,” by instituting radiation-limiting techniques and knowledge of expected radiation exposure. Methods Radiation-reduction measures included pulsed-fluoroscopy at 7.5 pulses/s...
18 CitationsSource
#1Sharon Borik (U of T: University of Toronto)H-Index: 3
#2Sabina Volodina (U of T: University of Toronto)H-Index: 1
Last. Lee N. Benson (U of T: University of Toronto)H-Index: 74
view all 5 authors...
The aim of the study was to examine the role of three-dimensional rotational angiography (3DRA) in assessing vascular and airway narrowing in children with a bidirectional cavopulmonary anastomosis (BCPA). The course of children with single ventricle physiology is often complicated by left pulmonary artery (LPA) and/or bronchial stenosis and may be related to aortic compression. 3DRA may be useful in evaluating this complex anatomy and possible mechanisms for the observed obstruction. Clinical d...
15 CitationsSource
#1Sharon Borik (UHN: University Health Network)H-Index: 1
#2Andrew M. Crean (UHN: University Health Network)H-Index: 27
Last. Lee N. Benson (UHN: University Health Network)H-Index: 16
view all 10 authors...
Background— Percutaneous pulmonary valve implantation (PPVI) is a safe, less invasive alternative to surgical valve replacement for the congenital heart disease patient with right ventricular (RV) outflow tract dysfunction. The aim of this study was to determine whether reverse RV remodeling after PPVI was persistent in the longer term and whether timing of PPVI influenced outcomes. Methods and Results— Consecutive patients from the pediatric and adult congenital heart disease programs were enro...
52 CitationsSource
#1Ranjit Aiyagari (UM: University of Michigan)H-Index: 15
#2John F. Rhodes (Duke University)H-Index: 25
Last. Richard G. Ohye (UM: University of Michigan)H-Index: 54
view all 18 authors...
Objective To compare the interstage cardiac catheterization hemodynamic and angiographic findings between shunt types for the Pediatric Heart Network Single Ventricle Reconstruction trial. The trial, which randomized subjects to a modified Blalock-Taussig shunt (MBTS) or right ventricle-to-pulmonary artery shunt (RVPAS) for the Norwood procedure, demonstrated the RVPAS was associated with a smaller pulmonary artery diameter but superior 12-month transplant-free survival. Methods We analyzed the ...
18 CitationsSource
#1Yoichi Iwamoto (U of T: University of Toronto)H-Index: 1
#2Akio Inage (U of T: University of Toronto)H-Index: 2
Last. Shi-Joon Yoo (U of T: University of Toronto)H-Index: 33
view all 8 authors...
Background Phase-contrast magnetic resonance (MR) has been widely used for quantification of aortic regurgitation. However there is significant practice variability regarding where and how the blood flow data are acquired.
13 CitationsSource
#1Derek Wong (U of O: University of Ottawa)H-Index: 12
#2Kyong Jin Lee (U of T: University of Toronto)H-Index: 19
Last. Lars Grosse-Wortmann (U of T: University of Toronto)H-Index: 31
view all 5 authors...
Hemodynamics are usually evaluated in the supine position at rest. This is only a snapshot of an individual’s daily activities. This study describes circulatory adaptation, as assessed by magnetic resonance imaging, to changes in position and exercise. Phase contrast magnetic resonance imaging of blood flow within systemic and pulmonary arteries and veins was performed in 24 healthy volunteers at rest in the prone and supine position and with bicycle exercise in the supine position. No change wa...
9 CitationsSource
#1Devin Chetan (U of T: University of Toronto)H-Index: 13
#2Yasuhiro Kotani (U of T: University of Toronto)H-Index: 18
Last. Osami Honjo (U of T: University of Toronto)H-Index: 22
view all 11 authors...
Background—All 3 palliation strategies, Norwood, Sano, and Hybrid, currently used for hypoplastic left heart syndrome pose a risk of myocardial injury at different times and through different mechanisms. We sought to compare these strategies to understand longitudinal differences in interstage ventricular dysfunction and their subsequent impact on transplant-free survival and atrioventricular valve regurgitation (AVVR) as well as the relationship between adverse events and ventricular function. ...
31 CitationsSource
#1Kevin D. Hill (Duke University)H-Index: 32
#2John F. Rhodes (Duke University)H-Index: 25
Last. Christoph P. Hornik (Duke University)H-Index: 28
view all 21 authors...
Background— Recoarctation after the Norwood procedure increases risk for mortality. The Single Ventricle Reconstruction (SVR) trial randomized subjects with a single right ventricle undergoing a Norwood procedure to a modified Blalock-Taussig shunt or a right ventricle–pulmonary artery shunt. We sought to determine the incidence of recoarctation, risk factors, and outcomes in the SVR trial. Methods and Results— Recoarctation was defined by intervention, either catheter based or surgical. Univari...
48 CitationsSource