Joonghyun Ahn
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View article: Long Term Outcomes of Non-operative Treatment for Popliteal Artery Entrapment Syndrome: A Multicentre Study
Long Term Outcomes of Non-operative Treatment for Popliteal Artery Entrapment Syndrome: A Multicentre Study Open
View article: Development and Validation of a Machine Learning Model for Early Prediction of Acute Kidney Injury in Neurocritical Care: A Comparative Analysis of XGBoost, GBM, and Random Forest Algorithms
Development and Validation of a Machine Learning Model for Early Prediction of Acute Kidney Injury in Neurocritical Care: A Comparative Analysis of XGBoost, GBM, and Random Forest Algorithms Open
Background: Acute Kidney Injury (AKI) is a pivotal concern in neurocritical care, impacting patient survival and quality of life. This study harnesses machine learning (ML) techniques to predict the occurrence of AKI in patients receiving …
View article: Beyond SOFA and APACHE II, Novel Risk Stratification Models Using Readily Available Biomarkers in Critical Care
Beyond SOFA and APACHE II, Novel Risk Stratification Models Using Readily Available Biomarkers in Critical Care Open
Background: Current severity scoring systems in intensive care units (ICUs) are complex and time-consuming, limiting their utility for rapid clinical decision-making. This study aimed to develop and validate simplified prediction models us…
View article: Efficacy and safety of tezepelumab versus placebo in adults with moderate to very severe chronic obstructive pulmonary disease (COURSE): a randomised, placebo-controlled, phase 2a trial
Efficacy and safety of tezepelumab versus placebo in adults with moderate to very severe chronic obstructive pulmonary disease (COURSE): a randomised, placebo-controlled, phase 2a trial Open
View article: Machine learning prediction of the case-fatality of COVID-19 and risk factors for adverse outcomes in patients with non-small cell lung cancer
Machine learning prediction of the case-fatality of COVID-19 and risk factors for adverse outcomes in patients with non-small cell lung cancer Open
The case fatality rate in patients with NSCLC was 4.8%, while most patients with advanced NSCLC continued to receive systemic treatment. However, patients with risk factors require careful management of COVID-19 complications.
View article: Long-term effects of local radiotherapy on growth and vertebral features in children with high-risk neuroblastoma
Long-term effects of local radiotherapy on growth and vertebral features in children with high-risk neuroblastoma Open
Background To evaluate the effects of local radiotherapy (RT) on growth, we evaluated the chronological growth profiles and vertebral features of children with high-risk neuroblastoma. Methods Thirty-eight children who received local photo…
View article: Restrictive calcium replacement in septic shock: a multicenter before-after intervention study
Restrictive calcium replacement in septic shock: a multicenter before-after intervention study Open
Objetivo. Investigar el efecto de un protocolo de reposición restrictiva de calcio frente a una estrategia liberal en pacientes con shock séptico. Métodos. Estudio multicéntrico, antes-después y retrospectivo que evaluó el efecto de la imp…
View article: Long-term effects of local radiotherapy on growth and vertebral features in children with high-risk neuroblastoma
Long-term effects of local radiotherapy on growth and vertebral features in children with high-risk neuroblastoma Open
Background To evaluate the effects of local radiotherapy (RT) on growth, we evaluated the chronological growth profiles and vertebral features of children with high-risk neuroblastoma. Methods Thirty-eight children who received local photo…
View article: Outcomes of Concomitant Maze Procedure in Tricuspid Repair for Severe Tricuspid Regurgitation
Outcomes of Concomitant Maze Procedure in Tricuspid Repair for Severe Tricuspid Regurgitation Open
The Maze procedure during TV repair in patients with severe TR and persistent AF showed acceptable SR rates and lower MACCE rates compared to those without the procedure, while also promoting LA reverse remodeling.
View article: Machine learning-based predictor for neurologic outcomes in patients undergoing extracorporeal cardiopulmonary resuscitation
Machine learning-based predictor for neurologic outcomes in patients undergoing extracorporeal cardiopulmonary resuscitation Open
Background We investigated the predictors of poor neurological outcomes in extracorporeal cardiopulmonary resuscitation (ECPR) patients using machine learning (ML) approaches. Methods This study was a retrospective, single-center, observat…
View article: Long-term effects of local radiotherapy on growth and vertebral features in children with high-risk neuroblastoma
Long-term effects of local radiotherapy on growth and vertebral features in children with high-risk neuroblastoma Open
Objectives: To evaluate the effects of local radiotherapy (RT) on growth, we evaluated the chronological growth profiles and vertebral features of children with high-risk neuroblastoma. Materials and Methods: Thirty-eight children who rece…
View article: Risk of age older than 65 years for 30-day cardiac complication may be comparable to low-to-moderate risk according to revised cardiac risk index in non-cardiac surgery
Risk of age older than 65 years for 30-day cardiac complication may be comparable to low-to-moderate risk according to revised cardiac risk index in non-cardiac surgery Open
View article: Comparison of Early and Late Surgeries after Coronary Stent Implantation in Patients with Normal Preoperative Troponin Level: A Retrospective Study
Comparison of Early and Late Surgeries after Coronary Stent Implantation in Patients with Normal Preoperative Troponin Level: A Retrospective Study Open
Current guidelines recommend delaying noncardiac surgery for 6 months after drug eluting stent implantation. However, this recommendation is largely based on limited evidence and various event definitions. Whether early surgery within 6 mo…
View article: Impact of early nutrition and feeding route on clinical outcomes of neurocritically ill patients
Impact of early nutrition and feeding route on clinical outcomes of neurocritically ill patients Open
Early proper nutritional support is important to critically ill patients. Nutritional support is also associated with clinical outcomes of neurocritically ill patients. We investigate whether early nutrition is associated with clinical out…
View article: Sex differences in myocardial injury after non-cardiac surgery and postoperative mortality
Sex differences in myocardial injury after non-cardiac surgery and postoperative mortality Open
Background Myocardial injury after non-cardiac surgery (MINS) has recently been accepted as a predictor of mortality. However, sex differences in the incidence of MINS and survival thereafter are not fully understood. This study aimed to c…
View article: Improved Early Detection Models of Pharyngocutaneous Fistula after Total Laryngectomy
Improved Early Detection Models of Pharyngocutaneous Fistula after Total Laryngectomy Open
Early detection of pharyngocutaneous fistula (PCF) after total laryngectomy (TL) could prevent severe complications such as major vessel rupture. We aimed to develop prediction models for detecting PCF in the early postoperative period. We…
View article: Association between inflammation-based prognostic markers and mortality of non-cardiac surgery
Association between inflammation-based prognostic markers and mortality of non-cardiac surgery Open
Background: To evaluate the association between inflammation and nutrition-based biomarkers and postoperative outcomes after non-cardiac surgery.Methods: Between January 2011 and June 2019, a total of 102,052 patients undergoing non-cardia…
View article: Diagnostic Performance of Cardiac CT and Transthoracic Echocardiography for Detection of Surgically Confirmed Bicuspid Aortic Valve: Effect of Calcium Extent and Valve Subtypes
Diagnostic Performance of Cardiac CT and Transthoracic Echocardiography for Detection of Surgically Confirmed Bicuspid Aortic Valve: Effect of Calcium Extent and Valve Subtypes Open
Cardiac CT had a higher diagnostic performance in detecting BAV than TTE and may help diagnose BAV, particularly in patients with severe valvular calcification.
View article: Impact of diabetes mellitus on long-term clinical and graft outcomes after off-pump coronary artery bypass grafting with pure bilateral skeletonized internal thoracic artery grafts
Impact of diabetes mellitus on long-term clinical and graft outcomes after off-pump coronary artery bypass grafting with pure bilateral skeletonized internal thoracic artery grafts Open
Background The effect of diabetes mellitus (DM) on the long-term outcomes of coronary artery bypass graft (CABG) remained debatable and various strategies exist for CABG; hence, clarifying the effects of DM on CABG outcomes is difficult. T…
View article: Preoperative left atrial volume index may be associated with postoperative atrial fibrillation in non-cardiac surgery
Preoperative left atrial volume index may be associated with postoperative atrial fibrillation in non-cardiac surgery Open
Background Postoperative atrial fibrillation (POAF) is related to mortality after non-cardiac surgery. Left atrial volume index (LAVI) is known to be associated with prognosis and development of atrial fibrillation, but it has not been ful…
View article: Association between Mortality and Sequential Organ Failure Assessment Score during a Short Stay in the Intensive Care Unit after Non-Cardiac Surgery
Association between Mortality and Sequential Organ Failure Assessment Score during a Short Stay in the Intensive Care Unit after Non-Cardiac Surgery Open
Background: The sequential organ failure assessment (SOFA) score has been validated in various clinical situations. However, it has not been investigated during a short stay in the intensive care unit (ICU). This study aimed to evaluate th…
View article: Clinical Outcomes Associated with Degree of Hypernatremia in Neurocritically Ill Patients
Clinical Outcomes Associated with Degree of Hypernatremia in Neurocritically Ill Patients Open
Objective : Hypernatremia is a common complication encountered during the treatment of neurocritically ill patients. However, it is unclear whether clinical outcomes correlate with the severity of hypernatremia in such patients. Therefore,…
View article: Association between High-Sensitivity Cardiac Troponin I and Clinical Prognosis of Neurosurgical and Neurocritically Ill Patients
Association between High-Sensitivity Cardiac Troponin I and Clinical Prognosis of Neurosurgical and Neurocritically Ill Patients Open
To investigate whether high-sensitivity troponin I (hs-TnI) elevation is associated with in-hospital mortality and major adverse cardiac events (MACEs) in neurosurgical and neurocritically ill patients. Among neurosurgical patients admitte…
View article: Optimal Arterial Blood Gas Tensions for the Prognosis of Favorable Neurological Outcomes in Survivors after Extracorporeal Cardiopulmonary Resuscitation
Optimal Arterial Blood Gas Tensions for the Prognosis of Favorable Neurological Outcomes in Survivors after Extracorporeal Cardiopulmonary Resuscitation Open
Our aim is to assess the optimal levels of oxygen and carbon dioxide for the prognosis of favorable neurologic outcomes in survivors after extracorporeal cardiopulmonary resuscitation (ECPR). We obtained the mean levels of PaCO2 and PaO2 i…
View article: Association between high preoperative body mass index and mortality after cancer surgery
Association between high preoperative body mass index and mortality after cancer surgery Open
Despite an association between obesity and increased mortality in the general population, obesity has been paradoxically reported with improved mortality of surgery and some types of cancer. However, this has not been fully investigated in…
View article: The use of renin angiotensin aldosterone system inhibitors may be associated with decreased mortality after cancer surgery
The use of renin angiotensin aldosterone system inhibitors may be associated with decreased mortality after cancer surgery Open
Renin–angiotensin–aldosterone system (RAAS) inhibitors are antihypertensive agents with conflicting results on protective effects against some types of cancer. In light of these controversies, we aimed to study the effects of RAAS inhibito…
View article: Association Between Perioperative Adverse Cardiac Events and Mortality During One‐Year Follow‐Up After Noncardiac Surgery
Association Between Perioperative Adverse Cardiac Events and Mortality During One‐Year Follow‐Up After Noncardiac Surgery Open
Background Cardiac complications are associated with perioperative mortality, but perioperative adverse cardiac events (PACEs) that are associated with long‐term mortality have not been clearly defined. We identified PACE as a composite of…
View article: Optimal Mean Arterial Pressure for Favorable Neurological Outcomes in Survivors after Extracorporeal Cardiopulmonary Resuscitation
Optimal Mean Arterial Pressure for Favorable Neurological Outcomes in Survivors after Extracorporeal Cardiopulmonary Resuscitation Open
We evaluated the optimal mean arterial pressure (MAP) for favorable neurological outcomes in patients who underwent extracorporeal cardiopulmonary resuscitation (ECPR). Adult patients who underwent ECPR were included. The average MAP was o…
View article: Differential Prognostic Impact of Off-Hours for Patients With Acute Myocardial Infarction Complicated by Cardiogenic Shock
Differential Prognostic Impact of Off-Hours for Patients With Acute Myocardial Infarction Complicated by Cardiogenic Shock Open
View article: Digital Breast Tomosynthesis versus MRI as an Adjunct to Full-Field Digital Mammography for Preoperative Evaluation of Breast Cancer according to Mammographic Density
Digital Breast Tomosynthesis versus MRI as an Adjunct to Full-Field Digital Mammography for Preoperative Evaluation of Breast Cancer according to Mammographic Density Open
DBT plus FFDM showed an overall higher specificity than that of MRI plus FFDM regardless of breast density, perhaps without substantial loss in sensitivity and NPV in the diagnosis of additional cancers. Thus, DBT may have the potential to…