Cardiovascular Prevention and Pharmacotherapy

Original Articles

Relationship between serum ferritin levels during iron chelating therapy and diastolic left ventricular function in transfusion-induced iron overload: a 2-year follow-up study in patients with aplastic anemia: Woo-Baek Chung; Cardiovasc Prev Pharmacother. 2023;5(3):81-90. Published online July 26, 2023; DOI: https://doi.org/10.36011/cpp.2023.5.e11; Funded: Catholic Research Institute for Intractable Cardiovascular Disease, Catholic University of Korea

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Abstract PDF: Background
The goal of the study was to investigate changes in cardiac function during iron chelating therapy (ICT) in patients with transfusion-induced iron overload.
Methods
We prospectively examined cardiac function in 21 aplastic anemia patients for 2 years by using transthoracic echocardiography before and during ICT.
Results
The serum ferritin level decreased from 4,961.5±2,917.9 µg/L to 2,466.9±2,533.1 µg/L after 2 years (P<0.001). The left ventricular ejection fraction decreased to under the normal limit (55%) in five patients. The serum ferritin level was positively correlated with the E/E’ ratio (r=0.595, P=0.004) and the left atrial (LA) volume (r=0.685, P=0.001) and negatively correlated with the deceleration time (r=–0.586, P=0.005) after 2 years of ICT. The seven responders (serum ferritin level <1,000 µg/L after 2 years of ICT) demonstrated a significantly higher ejection fraction, smaller LA volume and left ventricular end-systolic dimension, and a slower deceleration time than the 14 nonresponders (≥1,000 µg/L).
Conclusions
These results suggest that the response to ICT, which was estimated by the serum ferritin level, can reflect cardiac function during ICT. In nonresponders, cardiac function monitoring during ICT may be helpful for the early detection of cardiac dysfunction.

Correlation between metformin intake and prostate cancer: Raeun Kim, Minsun Song, Jiwon Shinn, Hun-Sung Kim; Cardiovasc Prev Pharmacother. 2023;5(3):91-97. Published online July 31, 2023; DOI: https://doi.org/10.36011/cpp.2023.5.e12; Funded: National Research Foundation of Korea, Ministry of Science and ICT

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Abstract PDF: Background
The relationship between metformin intake and prostate cancer incidence remains unclear. Therefore, we examined the correlation between prostate cancer and metformin use.
Methods
The subjects were diabetes patients aged ≥50 years who had been diagnosed with prostate cancer and had undergone surgery at Seoul St. Mary's Hospital. Groups taking metformin (MET(+) group) and not taking metformin (MET(–) group) were divided and compared.
Results
The mean preoperative prostate-specific antigen (PSA) levels in the MET(–) and MET(+) groups were 10.7±11.9 and 8.0±5.6 ng/mL, respectively, with no statistically significant difference between the two groups (P=0.387). The average prostate volume of the MET(–) group was 82.4±98.0 mL, and the average prostate volume of the MET(+) group was 55.4±20.1 mL, but there was no statistically significant difference between the two groups (P=0.226). The mean PSA velocity also did not show a significant difference between the two groups (0.025±0.102 ng/mL vs. 0.005±0.012 ng/mL, P=0.221).
Conclusions
We did not identify a significant positive correlation between metformin and prostate cancer. However, preoperational PSA and PSA velocity tended to be lower in the MET(+) group. A sophisticated prospective study with a large sample size should be planned.

Review Article

Optimal target blood pressure in older patients with hypertension: Kwang-il Kim; Cardiovasc Prev Pharmacother. 2023;5(2):41-48. Published online April 24, 2023; DOI: https://doi.org/10.36011/cpp.2023.5.e4; Funded: Korea National Institute of Health

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Abstract PDF: Hypertension is a common condition among older adults, and blood pressure (BP) control is effective for preventing cardiovascular morbidity and mortality even among the oldest-old adults. However, the optimal target BP for older patients with hypertension has been a subject of debate, with previous clinical trials providing conflicting evidence. Determining the optimal target BP for older adults is a complex issue that requires considering comorbidities, frailty, quality of life, and goals of care. As such, BP targets should be individualized based on each patient's unique health status and risk factors, and treatment should be closely monitored to ensure that it is effective and well-tolerated. The benefits and risks of intensive BP control should be carefully weighed in the context of the patient's overall health status and treatment goals. Ultimately, the decision to pursue intensive BP control should be made through shared decision-making between patients and their healthcare providers.

Original Article

Correlation analysis of cancer incidence after pravastatin treatment: Jin Yu, Raeun Kim, Jiwon Shinn, Man Young Park, Hun-Sung Kim; Cardiovasc Prev Pharmacother. 2023;5(2):61-68. Published online April 28, 2023; DOI: https://doi.org/10.36011/cpp.2023.5.e6; Funded: Daiichi Sankyo Korea

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Abstract PDF: Background
Few studies have investigated the cancer-preventive effects of statins, which are known to protect against cardio-cerebrovascular diseases. In this study, we analyzed the degree to which pravastatin, a low-potency statin, could prevent cancer.
Methods
This retrospective cohort study used data from the Korean National Health Insurance Service database. Patients diagnosed with diabetes after the age of 50 years were divided into a pravastatin group and a control group that did not receive any statin prescriptions.
Results
This study included 557 patients in the pravastatin group and 2,221 patients in the control (no statin) group. During the 5-year follow-up, the incidence of cancer was 16.7% (93 of 557 patients) in the pravastatin group and 19.9% (442 of 2,221 patients) in the control group. The incidence of cancer was 22% higher in the control group than in the pravastatin group (hazard ratio, 1.22; 95% confidence interval, 0.97–1.52; P=0.09). Death from various causes occurred at a 45% higher frequency in the control group than in the pravastatin group (hazard ratio, 1.45; 95% confidence interval, 0.99–2.12; P=0.06). However, neither of those relationships reached statistical significance.
Conclusions
Although pravastatin use did not show a significant causal relationship with cancer incidence, fewer cases of cancer occurred in pravastatin users than in controls. However, further large-scale studies are required to confirm these findings.

Review Article

Liraglutide, a glucagon-like peptide-1 analog, in individuals with obesity in clinical practice: Juyoung Shin, Raeun Kim, Hun-Sung Kim; Cardiovasc Prev Pharmacother. 2023;5(2):49-53. Published online April 28, 2023; DOI: https://doi.org/10.36011/cpp.2023.5.e7; Funded: National Research Foundation of Korea, Ministry of Science and ICT

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Abstract PDF: Obesity is a disease requiring treatment. The prevalence of obesity is steadily increasing both in Korea and worldwide. Individuals with obesity are at elevated risks of diabetes, cerebrovascular disease, and solid cancer; therefore, obesity is now considered to be a disease requiring treatment, rather than merely a cosmetic problem. Nutrition and exercise are the basic forms of obesity management, but it is not easy to lose weight through only one’s own willpower. Accordingly, policies for establishing a cultural environment that encourages desirable behaviors are proposed through multifaceted efforts involving the media and local organizations. However, the pharmacological and surgical treatments selected as medical interventions should be individualized based on an understanding of each individual’s cause of obesity and characteristics. It is important to understand how to enhance and maintain the effectiveness of treatment not only for the prescribing medical staff, but also for the individual with obesity who is being treated.

Original Article

Modifiable risk factors for coronary artery disease in the Indonesian population: a nested case-control study: Anggoro Budi Hartopo, Maria Patricia Inggriani, Brilliant Winona Jhundy, Jajah Fachiroh, Putri Tiara Rosha, Ratri Kusuma Wardani, Fatwa Sari Tetra Dewi; Cardiovasc Prev Pharmacother. 2023;5(1):24-34. Published online January 31, 2023; DOI: https://doi.org/10.36011/cpp.2023.5.e3; Funded: Ministry of Education, Culture, Research, and Technology

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Abstract PDF: Background
There is a lack of data on modifiable coronary artery disease (CAD) risk factors in the Indonesian population, hindering the implementation of assessments and prevention programs in this population. This study investigated modifiable risk factors for CAD among Indonesians by comparing them between CAD-proven patients and healthy subjects from a similar population.
Methods
In this nested, matched case-control study, the cases were patients from a referral hospital in Yogyakarta, Indonesia and the controls were respondents in a population surveillance system in Yogyakarta, Indonesia. The cases were 421 patients who had undergone coronary angiography, showing significant CAD. The sex- and age-matched controls were 842 respondents from the Universitas Gadjah Mada Health and Health and Demographic Surveillance System Sleman who indicated no CAD presence on a questionnaire. The modifiable CAD risk factors compared between cases and controls were diabetes mellitus, hypertension, central obesity, smoking history, physical inactivity, and less fruit and vegetable intake. A multivariate regression model was applied to determine independent modifiable risk factors for CAD, expressed as adjusted odds ratios (AORs).
Results
A multivariate analysis model of 1,263 subjects including all modifiable risk factors indicated that diabetes mellitus (AOR, 3.32; 95% confidence interval [CI], 2.09–5.28), hypertension (AOR, 2.52; 95% CI, 1.76–3.60), former smoking (AOR, 4.18; 95% CI, 2.73–6.39), physical inactivity (AOR, 15.91; 95% CI, 10.13–24.99), and less fruit and vegetable intake (AOR, 5.42; 95% CI, 2.84–10.34) independently and significantly emerged as risk factors for CAD.
Conclusions
Hypertension, diabetes mellitus, former smoking, physical inactivity, and less fruit and vegetable intake were independent and significant modifiable risk factors for CAD in the Indonesian population.

Review Article

The effects and side effects of liraglutide as a treatment for obesity: Jeonghoon Ha, Jin Yu, Joonyub Lee, Hun-Sung Kim; Cardiovasc Prev Pharmacother. 2022;4(4):142-148. Published online October 20, 2022; DOI: https://doi.org/10.36011/cpp.2022.4.e18; Funded: National Research Foundation of Korea, Ministry of Science and ICT

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Abstract PDF: The incidence of obesity is increasing throughout the world, including Korea. Liraglutide, the main purpose of which is glucose control, has recently gained significant attention due to its additional effect on weight loss. Liraglutide injections have been widely used as an important treatment for obese patients in Korea. In addition to weight loss, liraglutide has various other effects, such as prevention of cardiovascular disease. Despite its excellent effect on weight loss, notable side effects, such as nausea and vomiting, have also been associated with liraglutide. Despite these side effects, liraglutide has not been discontinued due to its beneficial effects on weight loss. Nonetheless, there are reports wherein patients did not experience weight loss upon taking the drug. As such, there is a possibility of liraglutide misuse and abuse. Therefore, physicians need to have a broad understanding of liraglutide and understand the advantages and disadvantages of liraglutide prescription.

Original Articles

Development of a predictive model for the side effects of liraglutide: Jiyoung Min, Jiwon Shinn, Hun-Sung Kim; Cardiovasc Prev Pharmacother. 2022;4(2):87-93. Published online April 27, 2022; DOI: https://doi.org/10.36011/cpp.2022.4.e12; Funded: National Research Foundation of Korea, Ministry of Science and ICT

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Abstract PDF Supplementary Material

Background
Liraglutide, a drug used for the management of obesity, has many known side effects. In this study, we developed a predictive model for the occurrence of liraglutide-related side effects using data from electronic medical records (EMRs).
Methods
This study included 237 patients from Seoul St. Mary's Hospital and Eunpyeong St. Mary's Hospital who were prescribed liraglutide. An endocrinologist obtained medical data through an EMR chart review. Model performance was evaluated using the mean of the area under the receiver operating characteristic curve (AUROC) with a 95% confidence interval (CI).
Results
A predictive model was developed for patients who were prescribed liraglutide. However, 37.1% to 75.5% of many variables were missing, and the AUROC of the developed predictive model was 0.630 (95% CI, 0.551–0.708). Patients who had previously taken antiobesity medication had significantly fewer side effects than those without previous antiobesity medication use (20.7% vs. 41.4%, P<0.003). The risk of side effect occurrence was significantly higher in patients with diabetes than in patients without diabetes by 2.389 times (odds ratio, 2.389; 95% CI, 1.115–5.174).
Conclusions
This study did not successfully develop a predictive model for liraglutide-related side effects, primarily due to issues related to missing data. When prescribing antiobesity drugs, detailed records and basic blood tests are expected to be essential. Further large-scale studies on liraglutide-related side effects are needed after obtaining high-quality data.

Citations

Citations to this article as recorded by

The effects and side effects of liraglutide as a treatment for obesity
Jeonghoon Ha, Jin Yu, Joonyub Lee, Hun-Sung Kim
Cardiovascular Prevention and Pharmacotherapy.2022; 4(4): 142. CrossRef

Indirect comparison of nonvitamin K oral anticoagulants and left atrial appendage occlusion: Sung-Hwan Kim, So-Yoon Park, Seung-Sik Hwang; Cardiovasc Prev Pharmacother. 2022;4(1):18-25. Published online January 18, 2022; DOI: https://doi.org/10.36011/cpp.2022.4.e1; Funded: Catholic Medical Center Research Foundation

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Abstract PDF Supplementary Material: Background
Anticoagulation is important in atrial fibrillation (AF) patients to reduce the occurrence of thrombotic events. We evaluated the efficacy and safety of percutaneous left atrial appendage occlusion (LAAO) as an alternative to systemic anticoagulation through an indirect comparative analysis.
Methods
An indirect comparative analysis of nonvitamin K oral anticoagulants (NOACs) and LAAO was conducted. Comparisons were made using data from four landmark randomized clinical trials (RE-LY, ROCKET-AF, ARISTOTLE, and PROTECT AF). Using warfarin as the common comparator, an indirect comparison was performed using data from each trial, and the relative risk was calculated between NOACs and LAAO.
Results
NOACs and LAAO showed similar results for the reduction of stroke and systemic embolism, with a non-statistically significant trend favoring NOACs (hazard ratio [HR], 0.74; 95% confidence interval [CI], 0.37–1.46 for dabigatran; HR, 0.99; 95% CI, 0.50–1.92 for rivaroxaban; HR, 0.89; 95% CI, 0.45–1.74 for apixaban). Significantly fewer major bleeding and procedure-related complications were found in patients treated with apixaban compared with LAAO (HR, 0.45; 95% CI, 0.26–0.75). Cardiovascular death occurred more frequently in patients administered NOACs than in patients with LAAO (HR, 2.28; 95% CI, 1.03–5.10 for dabigatran; HR, 2.41; 95% CI, 1.09–5.42 for rivaroxaban; HR, 2.40; 95% CI, 1.10–5.36 for apixaban).
Conclusions
The rate of all-cause death was similar between NOACs and LAAO. Compared with LAAO, NOACs led to a nonsignificant numerical decrease in stroke and embolism in AF patients. Significantly fewer safety events occurred in patients treated with apixaban. LAAO significantly reduced cardiovascular death.

Review Article

Anti-inflammatory effects of colchicine on coronary artery disease: Hun-Jun Park; Cardiovasc Prev Pharmacother. 2022;4(1):7-12. Published online January 20, 2022; DOI: https://doi.org/10.36011/cpp.2022.4.e5; Funded: National Research Foundation of Korea

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Abstract PDF: Inflammation plays a crucial role in the pathophysiology of coronary artery disease (CAD). Several types of sterile inflammation are mediated through the nucleotide-binding oligomerization domain-like receptor pyrin domain containing 3 (NLRP3) inflammasome. Colchicine has recently been shown to effectively block NLRP3 inflammasome assembly in addition to several other actions on inflammatory cells. Recent evidence also points to favorable effects of colchicine in patients with CAD, including lower levels of inflammatory markers, coronary plaque stabilization, and more favorable cardiac recovery after injury. This review focuses on the role of colchicine in the process of atherosclerosis and discusses its potential as a therapeutic option for the prevention and treatment of CAD.

Original Articles

Relationship between Retinal Nerve Fiber Layer Defects and Coronary Artery Calcium Score in Patients at Risk for Cardiovascular Disease: Chan Joo Lee, Joo Youn Shin, Jaewon Oh, Sang-Hak Lee, Seok-Min Kang, Sungha Park, Suk Ho Byeon; Cardiovasc Prev Pharmacother. 2021;3(4):95-105. Published online October 31, 2021; DOI: https://doi.org/10.36011/cpp.2021.3.e11; Funded: National Research Foundation of Korea, Ministry of Science and ICT

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Abstract PDF: Background
Noninvasive fundus imaging may provide useful information on blood vessels. This study investigated the relationship between localized retinal nerve fiber layer defects (RNFLDs) and vascular biomarkers.
Methods
This study included 1,316 participants without cardiovascular disease who were registered in a cardiovascular high-risk cohort. Examined vascular biomarkers included central hemodynamics, carotid-femoral pulse wave velocity (cfPWV), left ventricular hypertrophy (LVH) on electrocardiogram, and coronary artery calcium score (CACS). Fundus photography and optical coherence tomography were used to evaluate RNFLDs. The associations between RNFLDs and established high-risk cutoff points for each biomarker (central blood pressure [BP] ≥125/80 mmHg, central pulse pressure [PP] ≥50 mmHg, cfPWV ≥10 m/s, presence of LVH, and CACS ≥300) were assessed.
Results
RNFLD was identified in 394 participants (29.9%) who had higher fasting glucose level, lower renal function, and higher BP than those without RNFLDs. Additionally, central BP, central PP, cfPWV, CACS, and the percentage of subjects with LVH were higher in the RNFLD group. After adjusting for confounders, RNFLDs were not associated with LVH or an elevated central BP, central PP, or cfPWV. However, they were associated with an elevated CACS (odds ratio, 1.44; 95% confidence interval, 1.04–2.00; p=0.029).
Conclusions
Non-glaucomatous localized RNFLDs were associated with elevated CACS. Therefore, evaluating RNFLDs using fundus imaging may aid in the assessment of cardiovascular disease risk.

Development of a Predictive Model for Glycated Hemoglobin Values and Analysis of the Factors Affecting It: HyeongKyu Park, Da Young Lee, So young Park, Jiyoung Min, Jiwon Shinn, Dae Ho Lee, Soon Hyo Kwon, Hun-Sung Kim, Nan Hee Kim; Cardiovasc Prev Pharmacother. 2021;3(4):106-114. Published online October 31, 2021; DOI: https://doi.org/10.36011/cpp.2021.3.e14; Funded: National Research Foundation of Korea, Ministry of Science and ICT

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Abstract PDF: Background
Glycated hemoglobin (HbA1c), which reflects the patient's blood sugar level, can only be measured in a hospital setting. Therefore, we developed a model predicting HbA1c using personal information and self-monitoring of blood glucose (SMBG) data solely obtained by a patient.
Methods
Leave-one-out cross-validation (LOOCV) was performed at two university hospitals. After measuring the baseline HbA1c level before SMBG (Pre_HbA1c), the SMBG was recorded over a 3-month period. Based on these data, an HbA1c prediction model was developed, and the actual HbA1c value was measured after 3 months. The HbA1c values of the prediction model and actual HbA1c values were compared. Personal information was used in addition to SMBG data to develop the HbA1c predictive model.
Results
Thirty model training sessions and evaluations were conducted using LOOCV. The average mean absolute error of the 30 models was 0.659 (range, 0.005–2.654). Pre_HbA1c had the greatest influence on HbA1c prediction after 3 months, followed by post-breakfast blood glucose level, oral hypoglycemic agent use, fasting glucose level, height, and weight, while insulin use had a limited effect on HbA1c values.
Conclusions
The patient's SMBG data and personal information strongly influenced the HbA1c predictive model. In the future, it will be necessary to develop sophisticated predictive models using large samples for stable SMBG in patients.

Modeling of Changes in Creatine Kinase after HMG-CoA Reductase Inhibitor Prescription: Hun-Sung Kim, Jiyoung Min, Jiwon Shinn, Oak-Kee Hong, Jang-Won Son, Seong-Su Lee, Sung-Rae Kim, Soon Jib Yoo; Cardiovasc Prev Pharmacother. 2021;3(4):115-123. Published online October 31, 2021; DOI: https://doi.org/10.36011/cpp.2021.3.e15; Funded: National Research Foundation of Korea, Ministry of Science and ICT

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Abstract PDF: Background
Statin-associated muscle symptoms are one of the side effects that physicians should consider when prescribing statins. In this study, creatine kinase (CK) levels were measured following statin prescription, and various factors affecting the CK levels were determined using machine learning.
Methods
Changes in the CK were observed every 3 months for a 12-month period in patients who received statins for the first time at Seoul St. Mary's Hospital. For each visit, we developed four basic models based on changes in the CK levels. Extreme gradient boosting, a scalable end-to-end tree boosting algorithm, which employs a decision-tree-based ensemble machine learning algorithm, was used for the prediction of changes in the CK.
Results
A total of 23,860 patients were included. Among them, 19 patients (0.08%) had increased CK levels of 2,000 IU·L⁻¹ or more 3 months after statin prescription, and 65 patients (0.27%) exhibited CK levels of over 2,000 IU·L⁻¹ at least once during the 12-month study period. The area under the receiver operator characteristic of each model for each visit was 0.709–0.769, and the accuracy was 0.700–0.803. In each of the models, the variables that had the strongest influence on changes in the CK were sex and previous CK value.
Conclusions
Through machine learning, factors influencing changes in the CK were identified. These results will provide the basis for future research, through which the optimal parameters of the CK prediction model can be found and the model can be used in clinical applications.

Special Articles

Perceptron: Basic Principles of Deep Neural Networks: Eung-Hee Kim, Hun-Sung Kim; Cardiovasc Prev Pharmacother. 2021;3(3):64-72. Published online July 31, 2021; DOI: https://doi.org/10.36011/cpp.2021.3.e9; Funded: National Research Foundation of Korea, Ministry of Science and ICT

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Abstract PDF: Big data, artificial intelligence, machine learning, and deep learning have received considerable attention in the medical field. Attempts to use such machine learning in areas where medical decisions are difficult or necessary are continuously being made. To date, there have been many attempts to solve problems associated with the use of machine learning by using deep learning; hence, physicians should also have basic knowledge in this regard. Deep neural networks are one of the most actively studied methods in the field of machine learning. The perceptron is one of these artificial neural network models, and it can be considered as the starting point of artificial neural network models. Perceptrons receive various inputs and produce one output. In a perceptron, various weights (ω) are given to various inputs, and as ω becomes larger, it becomes an important factor. In other words, a perceptron is an algorithm with both input and output. When an input is provided, the output is produced according to a set rule. In this paper, the decision rules of the perceptron and its basic principles are examined. The intent is to provide a wide range of physicians with an understanding of the latest machine-learning methodologies based on deep neural networks.

Update on the Pharmacotherapy of Heart Failure with Reduced Ejection Fraction: Eui-Soon Kim, Jong-Chan Youn, Sang Hong Baek; Cardiovasc Prev Pharmacother. 2020;2(4):113-133. Published online October 31, 2020; DOI: https://doi.org/10.36011/cpp.2020.2.e17; Funded: National Research Foundation of Korea, Ministry of Science, ICT and Future Planning

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Abstract PDF

Heart failure (HF) is an important cardiovascular disease because of the increasing prevalence, high morbidity and mortality, and rapid expansion of health care costs. Over the past decades, efforts have been made to modify the prognosis of patients with HF. Regarding HF with reduced ejection fraction (HFrEF), several drugs have shown to improve mortality and morbidity, based on large-scale randomized controlled trials, leading to a critical paradigm shift in its pharmacological treatment. The paradigm of HFrEF pathophysiology has shifted from cardiorenal disease to hemodynamic changes, and neurohormonal activation is currently considered the prime pathophysiological mechanism of HFrEF. This review summarizes evidence on the pharmacological management of HFrEF derived from major randomized controlled trials, which have accomplished improvements in survival benefits.

Citations

Citations to this article as recorded by

Korean Society of Heart Failure Guidelines for the Management of Heart Failure: Treatment
Jong-Chan Youn, Darae Kim, Jae Yeong Cho, Dong-Hyuk Cho, Sang Min Park, Mi-Hyang Jung, Junho Hyun, Hyun-Jai Cho, Seong-Mi Park, Jin-Oh Choi, Wook-Jin Chung, Byung-Su Yoo, Seok-Min Kang
Korean Circulation Journal.2023; 53(4): 217. CrossRef
Korean Society of Heart Failure Guidelines for the Management of Heart Failure: Treatment
Jong-Chan Youn, Darae Kim, Jae Yeong Cho, Dong-Hyuk Cho, Sang Min Park, Mi-Hyang Jung, Junho Hyun, Hyun-Jai Cho, Seong-Mi Park, Jin-Oh Choi, Wook-Jin Chung, Byung-Su Yoo, Seok-Min Kang
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Post-transplantation outcomes of sensitized patients receiving durable mechanical circulatory support
Jong-Chan Youn, Xiaohai Zhang, Keith Nishihara, In-Cheol Kim, Sang Hong Baek, Osamu Seguchi, Evan P. Kransdorf, David H. Chang, Michelle M. Kittleson, Jignesh K. Patel, Robert M. Cole, Jaime D. Moriguchi, Danny Ramzy, Fardad Esmailian, Jon A. Kobashigawa
The Journal of Heart and Lung Transplantation.2022; 41(3): 365. CrossRef
Treatment of heart failure with a preserved ejection fraction
Yuran Ahn, Jong-Chan Youn
Journal of the Korean Medical Association.2022; 65(1): 18. CrossRef
Multimodal Imaging and Biomarkers in Cardiac Amyloidosis
Mi-Hyang Jung, Suyon Chang, Eun Ji Han, Jong-Chan Youn
Diagnostics.2022; 12(3): 627. CrossRef
Physician adherence and patient-reported outcomes in heart failure with reduced ejection fraction in the era of angiotensin receptor-neprilysin inhibitor therapy
In-Cheol Kim, Jong-Chan Youn, Se Yong Jang, Sang Eun Lee, Hyun-Jai Cho, Jin-Oh Choi, Ju-Hee Lee, Kyung-Hee Kim, Sun Hwa Lee, Kye Hun Kim, Jong Min Lee, Byung-Su Yoo, Byung-Su Yoo, Se Yong Jang, Jong Min Lee, In-Cheol Kim, Jin-Oh Choi, Hyun-Jai Cho, Sang E
Scientific Reports.2022;[Epub] CrossRef
A dose–response relationship of renin–angiotensin system blockers and beta-blockers in patients with acute heart failure syndrome: a nationwide prospective cohort study
Kyung An Kim, Eui-Soon Kim, Jong-Chan Youn, Hye Sun Lee, Soyoung Jeon, Hae-Young Lee, Hyun-Jai Cho, Jin-Oh Choi, Eun-Seok Jeon, Sang Eun Lee, Min-Seok Kim, Jae-Joong Kim, Kyung-Kuk Hwang, Myeong-Chan Cho, Shung Chull Chae, Seok-Min Kang, Dong-Ju Choi, Byu
European Heart Journal - Cardiovascular Pharmacotherapy.2022; 8(6): 587. CrossRef
Characteristics, outcomes, and predictors of de novo malignancy after heart transplantation
Jong-Chan Youn, Darae Kim, In-Cheol Kim, Hye Sun Lee, Jin-Oh Choi, Eun-Seok Jeon, Keith Nishihara, Evan P. Kransdorf, David H. Chang, Michelle M. Kittleson, Jignesh K. Patel, Danny Ramzy, Fardad Esmailian, Jon A. Kobashigawa
Frontiers in Cardiovascular Medicine.2022;[Epub] CrossRef
Pathophysiology of Heart Failure with Preserved Ejection Fraction
Jong-Chan Youn, Yuran Ahn, Hae Ok Jung
Heart Failure Clinics.2021; 17(3): 327. CrossRef
Heart failure risk in younger adults needing more attention
Jong-Chan Youn, Sang Hong Baek
International Journal of Cardiology.2021; 344: 135. CrossRef

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