Yoonkyung Chang

Prof. Yoonkyung Chang

Neurology, Ewha Womans University Medical Center, Seoul, Republic of Korea
orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 April 2018 in Stroke
Verified
Journal Article
Closed access
PDF file
YCYoonkyung Chang
Yoonkyung Chang
BKByung Moon Kim
Byung Moon Kim
OBOh Young Bang
Oh Young Bang
JBJang-Hyun Baek
Jang-Hyun Baek
JHJi Hoe Heo
Ji Hoe Heo
JKJeong-Min Kim
Jeong-Min Kim
Background and Purpose—: Effective rescue treatment has not yet been suggested in patients with mechanical thrombectomy (MT) failure. This study aimed to test whether rescue stenting (RS) improved clinical outcomes in MT-failed patients. Methods—: This is a retrospective analysis of the cohorts of the 16 comprehensive stroke centers between September 2010 and December 2015. We identified the patients who underwent MT but failed to recanalize intracranial internal carotid artery or middle cerebral artery M1 occlusion. Patients were dichotomized into 2 groups: patients with RS and without RS after MT failure. Clinical and laboratory findings and outcomes were compared between the 2 groups. It was tested whether RS is associated with functional outcome. Results—: MT failed in 148 (25.0%) of the 591 patients with internal carotid artery or middle cerebral artery M1 occlusion. Of these 148 patients, 48 received RS (RS group) and 100 were left without further treatment (no stenting group). Recanalization was successful in 64.6% (31 of 48 patients) of RS group. Compared with no stenting group, RS group showed a significantly higher rate of good outcome (modified Rankin Scale score, 0–2; 39.6% versus 22.0%; P =0.031) without increasing symptomatic intracranial hemorrhage (16.7% versus 20.0%; P =0.823) or mortality (12.5% versus 19.0%; P =0.360). Of the RS group, patients who had recanalization success had 54.8% of good outcome, which is comparable to that (55.4%) of recanalization success group with MT. RS remained independently associated with good outcome after adjustment of other factors (odds ratio, 3.393; 95% confidence interval, 1.192–9.655; P =0.022). Follow-up vascular imaging was available in the 23 (74.2%) of 31 patients with recanalization success with RS. The stent was patent in 20 (87.0%) of the 23 patients. Glycoprotein IIb/IIIa inhibitor was significantly associated with stent patency but not with symptomatic intracranial hemorrhage. Conclusions—: RS was independently associated with good outcomes without increasing symptomatic intracranial hemorrhage or mortality. RS seemed considered in MT-failed internal carotid artery or middle cerebral artery M1 occlusion.

1 November 2020 in European Journal of Preventive Cardiology
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Journal Article
Open access
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YCYoonkyung Chang
Yoonkyung Chang
HWHo Geol Woo
Ho Geol Woo
JPJin Park
Jin Park
JLJi Sung Lee
Ji Sung Lee
TSTae-Jin Song
Tae-Jin Song
Aims: Poor oral hygiene can provoke transient bacteremia and systemic inflammation, a mediator of atrial fibrillation and heart failure. This study aims to investigate association of oral hygiene indicators with atrial fibrillation and heart failure risk in Korea. Methods: We included 161,286 subjects from the National Health Insurance System-Health Screening Cohort who had no missing data for demographics, past history, or laboratory findings. They had no history of atrial fibrillation, heart failure, or cardiac valvular diseases. For oral hygiene indicators, presence of periodontal disease, number of tooth brushings, any reasons of dental visit, professional dental cleaning, and number of missing teeth were investigated. Results: During median follow-up of 10.5 years, 4911 (3.0%) cases of atrial fibrillation and 7971 (4.9%) cases of heart failure occurred. In multivariate analysis after adjusting age, sex, socioeconomic status, regular exercise, alcohol consumption, body mass index, hypertension, diabetes, dyslipidemia, current smoking, renal disease, history of cancer, systolic blood pressure, blood and urine laboratory findings, frequent tooth brushing (≥3 times/day) was significantly associated with attenuated risk of atrial fibrillation (hazard ratio: 0.90, 95% confidence interval (0.83–0.98)) and heart failure (0.88, (0.82–0.94)). Professional dental cleaning was negatively (0.93, (0.88–0.99)), while number of missing teeth ≥22 was positively (1.32, (1.11–1.56)) associated with risk of heart failure. Conclusion: Improved oral hygiene care was associated with decreased risk of atrial fibrillation and heart failure. Healthier oral hygiene by frequent tooth brushing and professional dental cleaning may reduce risk of atrial fibrillation and heart failure.

2 March 2020 in Diabetologia
Verified
Journal Article
Closed access
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YCYoonkyung Chang
Yoonkyung Chang
JLJi Sung Lee
Ji Sung Lee
KLKi-Jung Lee
Ki-Jung Lee
HWHo Geol Woo
Ho Geol Woo
Tae-Jin SongTae-Jin Song
Tae-Jin Song

1 February 2017 in Sleep Medicine
Verified
Journal Article
Closed access
TSTae-Jin Song
Tae-Jin Song
JPJung-Hyun Park
Jung-Hyun Park
KCKang Hyun Choi
Kang Hyun Choi
YCYoonkyung Chang
Yoonkyung Chang
JMJangsup Moon
Jangsup Moon
HLHyang Woon Lee
Hyang Woon Lee

1 May 2015 in Nutrition Research
Verified
Journal Article
Closed access
TSTae-Jin Song
Tae-Jin Song
YCYoonkyung Chang
Yoonkyung Chang
MSMin-Jeong Shin
Min-Jeong Shin
JHJi Hoe Heo
Ji Hoe Heo
YKYong Jae Kim
Yong Jae Kim

17 April 2023 in Medicina
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Journal Article
Open access
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YCYoonkyung Chang
Yoonkyung Chang
SESoojeong Eom
Soojeong Eom
MKMinjeong Kim
Minjeong Kim
Tae-Jin SongTae-Jin Song
Tae-Jin Song
Dyslipidemia is a major risk factor for stroke, following hypertension, diabetes, and smoking, and is an important risk factor for the prevention and treatment of coronary artery disease and peripheral vascular disease, including stroke. Recent guidelines recommend considering low-density lipoprotein cholesterol (LDL-C)-lowering therapies, such as statins (preferably), ezetimibe, or proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors to prevent the occurrence or recurrence of stroke, adhering to the “lower is better” approach. In this review, we examined the evidence supporting lipid-lowering medications like statins, ezetimibe, and PCSK9 inhibitors for secondary stroke prevention and dyslipidemia management in different stroke subtypes. Stroke guidelines advocate for administering the maximum tolerable dose of statins as the primary treatment and as soon as possible despite the potential for new-onset diabetes mellitus and possible muscle and liver toxicity due to their demonstrated benefits in secondary prevention of cardiovascular diseases and mortality reduction. When statin use is insufficient for LDL lowering, ezetimibe and PCSK9 inhibitors are recommended as complementary therapies. It is essential to establish lipid-lowering therapy goals based on the stroke subtype and the presence of comorbidities.