1.Differential effects of premorbid functional dependency on mortality in patients with anterior and posterior circulation stroke
Min-Surk KYE ; Do Yeon KIM ; Dong-Wan KANG ; Baik Kyun KIM ; Jung Hyun PARK ; Hyung Seok GUK ; Nakhoon KIM ; Sang-Won CHOI ; Jun Yup KIM ; Jihoon KANG ; Beom Joon KIM ; Moon-Ku HAN ; Hee-Joon BAE
Journal of Neurocritical Care 2024;17(1):16-23
Background:
This study investigated the impact of premorbid functional dependency on post-stroke mortality in patients with anterior circulation stroke (ACS) and posterior circulation stroke (PCS).
Methods:
This study enrolled 9,698 patients who experienced ischemic stroke between January 2011 and December 2022. The patients were classified into the ACS and PCS groups. Premorbid functional dependency was defined as modified Rankin Scale of ≥3. The risks of premorbid functional dependency and mortality at 3 months and 1-year post-stroke were assessed. A subgroup analysis was further performed to evaluate the risk of premorbid functional dependency in patients who underwent intravenous thrombolysis and endovascular treatment (EVT).
Results:
Among 6,358 patients with ACS and 3,340 with PCS, those with premorbid dependency were older, predominantly female, and had a higher proportion of vascular risk factors and stroke severity. Premorbid functional dependency was associated with increased mortality at both 3 months and 1 year in the PCS (odds ratio [OR], 1.79; 95% confidence interval [CI], 1.00–3.13; P=0.04 and OR, 2.87; 95% CI, 1.86–4.38; P<0.001, respectively), but not in the ACS (OR, 1.08; 95% CI, 0.77–1.51; P=0.639 and OR, 1.22; 95% CI, 0.93–1.59; P=0.140, respectively) group. Among patients who underwent EVT, premorbid functional dependency increased the risk of mortality at 1 year in the ACS group (OR, 1.80; 95% CI, 1.04–3.08; P=0.034), but was not associated with the risk in the PCS group (OR 2.56; 95% CI 0.64–10.15; P=0.176).
Conclusion
Premorbid functional dependency increases the risk of mortality in patients with PCS.
2.Effects of Telephone Hotline Counseling Program on Stroke Care
Baik Kyun KIM ; Dong-Wan KANG ; Do Yeon KIM ; Jung Hyun PARK ; Ji-Seok WOO ; Young-Hee KIM ; Hyun-Sook KIM ; Min-Joo MOON ; Jeong-Yoon LEE ; Hyung Seok GUK ; Nakhoon KIM ; Sang-Won CHOI ; Hakyeu AHN ; Bosco Seong Kyu YANG ; Jun Yup KIM ; Jihoon KANG ; Moon-Ku HAN ; Hee-Joon BAE ; Beom Joon KIM
Health Policy and Management 2023;33(2):185-193
Background:
This study focuses on the establishment and operation of a stroke patient hotline program to help patients and their caregivers determine when acute neurological changes require emergency attention.Method: The stroke hotline was established at the Gyeonggi Regional Cerebrovascular Center, Seoul National University Bundang Hospital, in June 2016. Patients diagnosed with stroke during admission or in outpatient clinics were registered and provided with stroke education. Consulting nurses managed hotline calls and made decisions about outpatient schedules or emergency room referrals, consulting physicians when necessary. The study analyzed consultation records from June 2016 to December 2020, assessing consultation volumes and types. Outcomes and hotline satisfaction were also evaluated.
Results:
Over this period, 6,851 patients were registered, with 1,173 patients (18%) undergoing 3,356 hotline consultations. The average monthly consultation volume increased from 29.2 cases in 2016 to 92.3 cases in 2020. Common consultation types included stroke symptoms (22.3%), blood pressure/glucose inquiries (12.8%), and surgery/procedure questions (12.6%). Unexpected outpatient visits decreased from 103 cases before the hotline to 81 cases after. Among the 2,244 consultations between January 2019 and December 2020, 9.6% were recommended hospital visits, with two cases requiring intra-arterial thrombectomy. Patient satisfaction ratings of 9–10 points increased from 64% in 2019 to 69% in 2020.
Conclusion
The stroke hotline program effectively reduced unexpected outpatient visits and achieved high patient satisfaction.Expanding the program could enhance the management of stroke-related neurological symptoms and minimize unnecessary healthcare resource utilization.
3.Metabolic Subtyping of Adrenal Tumors: Prospective Multi-Center Cohort Study in Korea
Eu Jeong KU ; Chaelin LEE ; Jaeyoon SHIM ; Sihoon LEE ; Kyoung-Ah KIM ; Sang Wan KIM ; Yumie RHEE ; Hyo-Jeong KIM ; Jung Soo LIM ; Choon Hee CHUNG ; Sung Wan CHUN ; Soon-Jib YOO ; Ohk-Hyun RYU ; Ho Chan CHO ; A Ram HONG ; Chang Ho AHN ; Jung Hee KIM ; Man Ho CHOI
Endocrinology and Metabolism 2021;36(5):1131-1141
Background:
Conventional diagnostic approaches for adrenal tumors require multi-step processes, including imaging studies and dynamic hormone tests. Therefore, this study aimed to discriminate adrenal tumors from a single blood sample based on the combination of liquid chromatography-mass spectrometry (LC-MS) and machine learning algorithms in serum profiling of adrenal steroids.
Methods:
The LC-MS-based steroid profiling was applied to serum samples obtained from patients with nonfunctioning adenoma (NFA, n=73), Cushing’s syndrome (CS, n=30), and primary aldosteronism (PA, n=40) in a prospective multicenter study of adrenal disease. The decision tree (DT), random forest (RF), and extreme gradient boost (XGBoost) were performed to categorize the subtypes of adrenal tumors.
Results:
The CS group showed higher serum levels of 11-deoxycortisol than the NFA group, and increased levels of tetrahydrocortisone (THE), 20α-dihydrocortisol, and 6β-hydroxycortisol were found in the PA group. However, the CS group showed lower levels of dehydroepiandrosterone (DHEA) and its sulfate derivative (DHEA-S) than both the NFA and PA groups. Patients with PA expressed higher serum 18-hydroxycortisol and DHEA but lower THE than NFA patients. The balanced accuracies of DT, RF, and XGBoost for classifying each type were 78%, 96%, and 97%, respectively. In receiver operating characteristics (ROC) analysis for CS, XGBoost, and RF showed a significantly greater diagnostic power than the DT. However, in ROC analysis for PA, only RF exhibited better diagnostic performance than DT.
Conclusion
The combination of LC-MS-based steroid profiling with machine learning algorithms could be a promising one-step diagnostic approach for the classification of adrenal tumor subtypes.
4.Cardiac Autotransplantation with Concurrent Pneumonectomy for Complete Resection of Primary Cardiac Intimal Sarcoma
Min Jung KU ; Su Wan KIM ; Seogjae LEE ; Jee Won CHANG ; Jonggeun LEE ; Dong Seop JEONG
The Korean Journal of Thoracic and Cardiovascular Surgery 2020;53(3):140-143
Primary cardiac sarcoma is rare, and intimal sarcoma is an extremely rare and highly lethal disease. We report a case of a 62-year-old woman who was incidentally diagnosed with a primary cardiac sarcoma originating from the left atrial appendage and extending to the left superior pulmonary vein. The location of the tumor was very complicated, posing a major challenge for complete resection. We successfully performed complete resection of the cardiac sarcoma via cardiac autotransplantation with left pneumonectomy. The patient recovered uneventfully, without any adjuvant therapy as of 6 months postoperatively. Autotransplantation of the heart may be suggested as a reasonable surgical option for extensive left atrial tumors.
5.Risk Factors Associated with Difficult Reversal of Heparin by Protamine Sulfate in Cardiopulmonary Bypass: An Ignored Issue
Min Jung KU ; Su Wan KIM ; Seogjae LEE ; Jee Won CHANG ; Jonggeun LEE
The Korean Journal of Thoracic and Cardiovascular Surgery 2020;53(5):258-262
Background:
The aim of this study was to evaluate risk factors associated with difficult heparin reversal by protamine after cardiopulmonary bypass.
Methods:
Data from 120 consecutive patients who underwent open heart surgery from 2009 to 2017 were retrospectively reviewed. Patients were divided into 2 groups: (1) those in whom complete heparin reversal was achieved after a single infusion of protamine (group A, n=89); and (2) those who required more protamine for heparin reversal (group B, n=31).
Results:
Female sex, prolonged bypass time (>200 min), long aortic cross-clamping time (>120 min), and a lowest rectal temperature <26°C were significant predictors of difficult heparin reversal. Larger amounts of fresh frozen plasma and platelet concentrate were transfused in group B than in group A.
Conclusion
Surgeons’ efforts to reduce operative time and avoid deep hypothermia may be helpful for increasing the likelihood of easy heparin reversal, especially in female patients.
6.Effectiveness and Safety of Adding Basal Insulin Glargine in Patients with Type 2 Diabetes Mellitus Exhibiting Inadequate Response to Metformin and DPP-4 Inhibitors with or without Sulfonylurea
Yu Mi KANG ; Chang Hee JUNG ; Seung Hwan LEE ; Sang Wook KIM ; Kee Ho SONG ; Sin Gon KIM ; Jae Hyeon KIM ; Young Min CHO ; Tae Sun PARK ; Bon Jeong KU ; Gwanpyo KOH ; Dol Mi KIM ; Byung Wan LEE ; Joong Yeol PARK
Diabetes & Metabolism Journal 2019;43(4):432-446
BACKGROUND: We aimed to investigate the effectiveness and safety of adding basal insulin to initiating dipeptidyl peptidase-4 (DPP-4) inhibitor and metformin and/or sulfonylurea (SU) in achieving the target glycosylated hemoglobin (HbA1c) in patients with type 2 diabetes mellitus (T2DM). METHODS: This was a single-arm, multicenter, 24-week, open-label, phase 4 study in patients with inadequately controlled (HbA1c ≥7.5%) T2DM despite the use of DPP-4 inhibitor and metformin. A total of 108 patients received insulin glargine while continuing oral antidiabetic drugs (OADs). The primary efficacy endpoint was the percentage of subjects achieving HbA1c ≤7.0%. Other glycemic profiles were also evaluated, and the safety endpoints were adverse events (AEs) and hypoglycemia. RESULTS: The median HbA1c at baseline (8.9%; range, 7.5% to 11.1%) decreased to 7.6% (5.5% to 11.7%) at 24 weeks. Overall, 31.7% subjects (n=33) achieved the target HbA1c level of ≤7.0%. The mean differences in body weight and fasting plasma glucose were 1.2±3.4 kg and 56.0±49.8 mg/dL, respectively. Hypoglycemia was reported in 36 subjects (33.3%, 112 episodes), all of which were fully recovered. There was no serious AE attributed to insulin glargine. Body weight change was significantly different between SU users and nonusers (1.5±2.5 kg vs. −0.9±6.0 kg, P=0.011). CONCLUSION: The combination add-on therapy of insulin glargine, on metformin and DPP-4 inhibitors with or without SU was safe and efficient in reducing HbA1c levels and thus, is a preferable option in managing T2DM patients exhibiting dysglycemia despite the use of OADs.
Blood Glucose
;
Body Weight
;
Body Weight Changes
;
Diabetes Mellitus, Type 2
;
Fasting
;
Hemoglobin A, Glycosylated
;
Humans
;
Hypoglycemia
;
Hypoglycemic Agents
;
Insulin Glargine
;
Insulin
;
Metformin
;
Morinda
7.Early Lateral Compartment Physeal Closure of the Elbow in Osteochondritis Dissecans of the Adolescent Baseball Players.
Jung Hoei KU ; Hyung Lae CHO ; Ki Bong PARK ; Wan Seok LEE
The Korean Journal of Sports Medicine 2018;36(4):180-188
PURPOSE: The purpose of this study is to identify bilateral differences of physeal closure of the lateral compartment of the elbow in osteochondritis dissecans (OCD) and related factors with premature physeal closure. METHODS: Initial radiographs of the bilateral elbows in 40 baseball players with OCD (group I) were reviewed for the status of physeal closure of the lateral compartment; capitellum, radial head, lateral epicondyle. Forty baseball players with medial epicondylar apophysitis (group II) were enrolled as a control. Relative status of physeal closure of dominant elbow was defined as early, same, and delayed. Bilateral differences of the status of physeal closure were analyzed between groups, and according to the radiographic stages, extent of the lesions and demographic factors in group I. RESULTS: Significant early physeal closures of dominant elbows were identified in group I in capitellum (group I, 55%; group II, 3%), radial head (group I, 53%; group II, 3%), and lateral epicondyle (group I 37%; group II, 5%). In group I, advanced stage and extended lesion showed early lateral compartment physeal closure especially in capitellum and radial head, and players with longer career length and limitation of motion showed early closure. CONCLUSION: Over the half of the adolescent baseball players with OCD demonstrated early radiocapitellar physeal closures of dominant elbow in initial presentation. Because premature physeal closure contributes to the development of arthritis without appropriate radiocapitellar remodeling, early detection of OCD is essential for prevention of arthritis and successful conservative management.
Adolescent*
;
Arthritis
;
Baseball*
;
Demography
;
Elbow*
;
Head
;
Humans
;
Osteochondritis Dissecans*
;
Osteochondritis*
8.Self-reported Sleep Impairment in Functional Dyspepsia and Irritable Bowel Syndrome
Seung Young KIM ; Rok Seon CHOUNG ; Seung Ku LEE ; Jung Wan CHOE ; Sung Woo JUNG ; Jong Jin HYUN ; Ja Seol KOO ; Sang Woo LEE ; Chol SHIN
Journal of Neurogastroenterology and Motility 2018;24(2):280-288
BACKGROUND/AIMS: Sleep impairment is a common complaint among patients with irritable bowel syndrome (IBS) and functional dyspepsia (FD). This study aimed to evaluate the prevalence of sleep impairment in FD or IBS patients, and to determine whether IBS-FD overlap induced more sleep disturbance than FD or IBS alone. METHODS: A population-based cohort in South Korea including 2251 subjects was asked about gastrointestinal symptoms including IBS and dyspepsia-related symptoms. In addition, sleep disturbance was measured using the Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale questionnaires. One-way ANOVA and logistic regression were used to assess differences among the 4 groups (healthy subjects, IBS alone, FD alone, and IBS-FD overlap). RESULTS: Of 2251 subjects who were surveyed by questionnaire, 2031 responded (92.5% response rate) and were analyzed. The prevalence of IBS, FD, and IBS-FD overlap was 8.0% (95% confidence interval [CI], 6.8–9.2%), 4.8% (95% CI, 3.9–5.8%), and 1.8% (95% CI, 1.2–2.4%), respectively. FD alone, but not IBS alone, was significantly associated with a poorer sleep quality index (OR, 2.68; 95% CI, 1.43–5.01) and more daytime sleepiness (OR, 2.21; 95% CI, 1.14–4.30), compared to healthy subjects. IBS-FD overlap had the greatest likelihood of a poorer sleep quality index (OR, 3.88; 95% CI, 1.83–8.19), daytime sleepiness (OR, 2.47; 95% CI, 1.01–5.67), and insomnia (OR, 2.84; 95% CI, 1.39–5.82), compared to healthy subjects. CONCLUSION: A correlation between functional gastrointestinal disorders and sleep disturbance was demonstrated, which was significantly pronounced in the context of IBS-FD overlap.
Cohort Studies
;
Dyspepsia
;
Gastrointestinal Diseases
;
Healthy Volunteers
;
Humans
;
Irritable Bowel Syndrome
;
Korea
;
Logistic Models
;
Prevalence
;
Sleep Initiation and Maintenance Disorders
9.Dual Monitoring with Stump Pressure and Electroencephalography During Carotid Endarterectomy.
Jee Won CHANG ; Su Wan KIM ; Seogjae LEE ; Jonggeun LEE ; Min Jung KU
The Korean Journal of Thoracic and Cardiovascular Surgery 2017;50(2):94-98
BACKGROUND: Intraoperative monitoring during carotid endarterectomy is crucial for cerebral protection. We investigated the results of carotid endarterectomy under dual monitoring with stump pressure and electroencephalography. METHODS: We retrospectively reviewed the medical records of 50 patients who underwent carotid endarterectomy between March 2010 and February 2016. We inserted a temporary shunt if the stump pressure was lower than 35 mm Hg or if any intraoperative change was observed on electroencephalography. RESULTS: Seventeen (34%) patients used a temporary shunt, and the mean stump pressure was 26.8 mm Hg in the shunt group and 46.5 mm Hg in the non-shunt group. No postoperative mortality or bleeding occurred. Postoperatively, there were 3 cases (6%) of minor stroke, all of which took place in the shunt group. A comparison of the preoperative and the intraoperative characteristics of the shunt group with those of the non-shunt group revealed no statistically significant difference between the 2 groups (p <0.01). CONCLUSION: Dual monitoring with stump pressure and electroencephalography was found to be a safe and reliable monitoring method with results comparable to those obtained using single monitoring. Further study should be performed to investigate the precise role of each monitoring method.
Carotid Artery Diseases
;
Electroencephalography*
;
Endarterectomy, Carotid*
;
Hemorrhage
;
Humans
;
Intraoperative Neurophysiological Monitoring
;
Medical Records
;
Methods
;
Monitoring, Intraoperative
;
Mortality
;
Retrospective Studies
;
Stroke
10.Nosocomial Infection in Adult Patients Undergoing Veno-Arterial Extracorporeal Membrane Oxygenation.
Gwan Sic KIM ; Kyo Seon LEE ; Choung Kyu PARK ; Seung Ku KANG ; Do Wan KIM ; Sang Gi OH ; Bong Suk OH ; Yochun JUNG ; Seok KIM ; Ju Sik YUN ; Sang Yun SONG ; Kook Joo NA ; In Seok JEONG ; Byoung Hee AHN
Journal of Korean Medical Science 2017;32(4):593-598
Data on the frequency of nosocomial infections during extracorporeal membrane oxygenation (ECMO) in adult populations remain scarce. We investigated the risk factors for nosocomial infections in adult patients undergoing venoarterial ECMO (VA-ECMO) support. From January 2011 to December 2015, a total of 259 patients underwent ECMO. Of these, patients aged 17 years or less and patients undergoing ECMO for less than 48 hours were excluded. Of these, 61 patients diagnosed with cardiogenic shock were evaluated. Mean patient age was 60.6 ± 14.3 years and 21 (34.4%) patients were female. The mean preoperative Sequential Organ Failure Assessment (SOFA) score was 8.6 ± 2.2. The mean duration of ECMO support was 6.8 ± 7.4 days. The rates of successful ECMO weaning and survival to discharge were 44.3% and 31.1%, respectively. There were 18 nosocomial infections in 14 (23.0%) patients. These included respiratory tract infections in 9 cases and bloodstream infections in a further 9. In multivariate analysis, independent predictors of infection during ECMO were the preoperative creatinine level (hazard ratio [HR], 2.176; 95% confidence interval [CI], 1.065–4.447; P = 0.033) and the duration of ECMO support (HR, 1.400; 95% CI, 1.081–1.815; P = 0.011). A higher preoperative creatinine level and an extended duration of ECMO support are risk factors for infection. Therefore, to avoid the development of nosocomial infections, strategies to shorten the length of ECMO support should be applied whenever possible.

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