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Wu YW, Wang CY, Cheng NC, Lin HJ, Huang HL, Huang JH, Chen CC, Lee JK, Chen PL, Hsu PC, Wu IH, Yeh JT, Tsai HY, Tzeng YS, Cheng CC, Lin CH, Wu SH, Tan JWH, Wu CH, Hsueh SK, Chang CH, Wu HP, Hsu CH, Yen HT, Lin PC, Lin CH, Tai HC, Chen WJ. 2024 TSOC/TSPS Joint Consensus: Strategies for Advanced Vascular Wound Management in Arterial and Venous Diseases. Acta Cardiol Sin 2024; 40:1-44. [PMID: 38264067 PMCID: PMC10801419 DOI: 10.6515/acs.202401_40(1).20231220a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 12/20/2023] [Indexed: 01/25/2024]
Abstract
The Taiwan Society of Cardiology (TSOC) and Taiwan Society of Plastic Surgery (TSPS) have collaborated to develop a joint consensus for the management of patients with advanced vascular wounds. The taskforce comprises experts including preventive cardiologists, interventionists, and cardiovascular and plastic surgeons. The consensus focuses on addressing the challenges in diagnosing, treating, and managing complex wounds; incorporates the perfusion evaluation and the advanced vascular wound care team; and highlights the importance of cross-disciplinary teamwork. The aim of this joint consensus is to manage patients with advanced vascular wounds and encourage the adoption of these guidelines by healthcare professionals to improve patient care and outcomes. The guidelines encompass a range of topics, including the definition of advanced vascular wounds, increased awareness, team structure, epidemiology, clinical presentation, medical treatment, endovascular intervention, vascular surgery, infection control, advanced wound management, and evaluation of treatment results. It also outlines a detailed protocol for assessing patients with lower leg wounds, provides guidance on consultation and referral processes, and offers recommendations for various wound care devices, dressings, and products. The 2024 TSOC/TSPS consensus for the management of patients with advanced vascular wounds serves as a catalyst for international collaboration, promoting knowledge exchange and facilitating advancements in the field of advanced vascular wound management. By providing a comprehensive and evidence-based approach, this consensus aims to contribute to improved patient care and outcomes globally.
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Affiliation(s)
- Yen-Wen Wu
- Division of Cardiology, Cardiovascular Medical Center, and Department of Nuclear Medicine, Far Eastern Memorial Hospital, New Taipei City
- School of Medicine, National Yang Ming Chiao Tung University, Taipei
- Graduate Institute of Medicine, Yuan Ze University
| | - Chao-Yung Wang
- Division of Cardiology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan
- Institute of Cellular and System Medicine, National Health Research Institute, Zhunan
| | - Nai-Chen Cheng
- Division of Plastic Surgery, Department of Surgery, National Taiwan University Hospital and College of Medicine
| | - Hung-Ju Lin
- Division of Cardiology, Department of Internal Medicine
- Cardiovascular Center, National Taiwan University Hospital, Taipei
| | - Hsuan-Li Huang
- Division of Cardiology, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City
- School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien
| | - Jih-Hsin Huang
- Division of Cardiovascular Surgery, Cardiovascular Center, Far Eastern Memorial Hospital, New Taipei City
| | - Chun-Chi Chen
- Division of Cardiology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan
| | - Jen-Kuang Lee
- Division of Plastic Surgery, Department of Surgery, National Taiwan University Hospital and College of Medicine
- Division of Cardiology, Department of Internal Medicine
- Department of Internal Medicine
- Department of Laboratory Medicine, National Taiwan University College of Medicine
- Telehealth Center, National Taiwan University Hospital, Taipei
| | - Po-Lin Chen
- School of Medicine, National Yang Ming Chiao Tung University, Taipei
- Division of Cardiovascular Surgery, Department of Surgery, En Chu Kong Hospital, New Taipei City
- Division of Cardiovascular Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei
| | - Po-Chao Hsu
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital
- Faculty of Medicine, Kaohsiung Medical University, Kaohsiung
| | - I-Hui Wu
- Department of Cardiovascular Surgery, National Taiwan University Hospital, College of Medicine, National Taiwan University
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University
- Department of Trauma Surgery, National Taiwan University Hospital, Taipei
| | - Jiun-Ting Yeh
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College and Chang Gung University, Taoyuan
| | - Hao-Yuan Tsai
- Division of Cardiology, Cardiovascular Medical Center, Far Eastern Memorial Hospital, New Taipei City
| | - Yuan-Sheng Tzeng
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei
- Department of Surgery, Zuoying Armed Forces General Hospital, Kaohsiung
| | - Cheng-Chung Cheng
- Division of Cardiology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center
| | - Chia-Hsun Lin
- Division of Cardiovascular Surgery, Department of Surgery, Shin Kong Wu Ho-Su Memorial Hospital
| | - Szu-Hsien Wu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Taipei Veterans General Hospital
- Department of Surgery, School of Medicine, National Yang Ming Chiao Tung University, Taipei
| | - Jimmy Wei Hwa Tan
- Department of Cardiovascular Surgery, An-Nan Hospital, China Medical University, Tainan
| | - Cheng-Hsueh Wu
- School of Medicine, National Yang Ming Chiao Tung University, Taipei
- Department of Critical Care Medicine, Taipei Veterans General Hospital, Taipei
| | - Shu-Kai Hsueh
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung
| | - Chien-Hwa Chang
- Division of Cardiovascular Surgery, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi County
| | - Hsu-Ping Wu
- Cardiovascular Center, MacKay Memorial Hospital, Taipei
| | - Chung-Ho Hsu
- Section of Peripheral Artery Disease, Division of Cardiology, Department of Internal Medicine, China Medical University Hospital, Taichung
| | - Hsu-Ting Yen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung
| | - Po-Chang Lin
- Department of Internal Medicine, China Medical University Hospital, Taichung
| | - Chih-Hung Lin
- Department of Plastic Reconstructive Surgery, Chang Gung University of Science and Technology, Taoyuan
| | - Hao-Chih Tai
- Institute of Cellular and System Medicine, National Health Research Institute, Zhunan
| | - Wen-Jone Chen
- Division of Plastic Surgery, Department of Surgery, National Taiwan University Hospital and College of Medicine
- Division of Cardiology, Department of Internal Medicine
- Department of Emergency Medicine, National Taiwan University College of Medicine and Hospital, Taipei
- Min-Sheng General Hospital, Taoyuan, Taiwan
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Yen HT, Wu CC, Lee YW, Lo CM, Chen YY. CT characteristics and clinical implications of acute type A aortic intramural hematoma. Front Cardiovasc Med 2023; 9:1041796. [PMID: 36698923 PMCID: PMC9868134 DOI: 10.3389/fcvm.2022.1041796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 11/28/2022] [Indexed: 01/11/2023] Open
Abstract
Objectives Computed tomography (CT) has been increasingly used in the diagnosis of acute aortic syndrome, and a number of high-risk CT imaging features have been reported. We aimed to identify CT imaging findings suggesting high-risk for acute aortic syndrome by examining clinical outcomes of patients with acute type A aortic intramural hematoma (TAIMH). Methods This retrospective study analyzed the relationship of clinical patient characteristics and imaging features with mortality and aortic events in 63 patients receiving initial medical treatment for TAIMH. Multivariate regression analysis was used to determine the predictors of aortic events, and the Kaplan-Meier method was used to analyze survival and aortic events. Results During a median follow-up of 4.2 years, 25 patients experienced aortic events and 40% of these occurred within 7 days of admission. In total, 12 patients experienced aortic death and 12 patients underwent open aortic surgery or endovascular stenting for aortic disease. In multivariate regression analysis, penetrating atherosclerotic ulcers (PAUs) or ulcer-like projections (ULPs) (P = 0.04) and pericardial effusion (P = 0.03) were independent predictors of aortic events. In the Cox regression model, PAUs/ULPs (P = 0.04) and pericardial effusion (P = 0.04) were independently associated with lower aortic event-free survival. Conclusion Identification of high-risk CT features is important for clinical decision-making during TAIMH treatment. Early and frequent CT imaging follow-up is required in patients receiving medical treatment. PAUs/ULP and pericardial effusion were the strongest predictors of adverse aortic events.
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Affiliation(s)
- Hsu-Ting Yen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chia-Chen Wu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yi-Wei Lee
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chien-Ming Lo
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yen-Yu Chen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan,*Correspondence: Yen-Yu Chen,
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Sng YP, Li Z, Yen HT, Yong CC. Case report of Modified Viabahn Open Revascularization TEChnique (VORTEC) as a rescue strategy for hepatic artery dissection after initial endovascular treatment of postpancreaticoduodenectomy hemorrhage. Medicine (Baltimore) 2022; 101:e29176. [PMID: 35583529 PMCID: PMC9276273 DOI: 10.1097/md.0000000000029176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/08/2022] [Indexed: 01/04/2023] Open
Abstract
RATIONALE Currently endovascular treatments are commonly utilized to treat postpancreaticoduodenectomy hemorrhage. However, when endovascular procedure went wrong, open surgery with ligation of the culprit vessels would be the most common salvage method. With Modified Viabahn Open Revascularization TEChnique (VORTEC), we can try to rescue the vessel without sacrificing it by introduction of another endovascular stent under direct method. PATIENT CONCERNS A 76-year-old man with stage IIIA ampulla vater adenocarcinoma underwent pancreaticoduodenectomy and experience pancreatic leak complicated with postpancreaticoduodenectomy hemorrhage. DIAGNOSIS Emergent angiography revealed extravasation from proper hepatic artery. INTERVENTIONS A 6 mm Viabahn stent was deployed but no distal runoff. Operation was shifted to emergent laparotomy and revealed intimal dissection of hepatic artery. Modified VORTEC was performed with guidewire redirected to true lumen and another stent was deployed under direct vision. OUTCOMES Patient's hepatic artery was preserved and with no consequent liver failure. LESSON Modified VORTEC method could be used as salvage strategy for artery dissection after initial endovascular treatment failed.
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Affiliation(s)
- Yi Ping Sng
- Department of General Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Zhihao Li
- Department of General Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Hsu-Ting Yen
- Department of Cardiovascular Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chee Chien Yong
- Department of General Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
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Tsai HY, Wang YT, Lee WC, Yen HT, Lo CM, Wu CC, Huang KR, Chen YC, Sheu JJ, Chen YY. Efficacy and Safety of Veno-Arterial Extracorporeal Membrane Oxygenation in the Treatment of High-Risk Pulmonary Embolism: A Retrospective Cohort Study. Front Cardiovasc Med 2022; 9:799488. [PMID: 35310966 PMCID: PMC8924067 DOI: 10.3389/fcvm.2022.799488] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/25/2022] [Indexed: 12/12/2022] Open
Abstract
Objectives Veno-arterial extracorporeal membrane oxygenation (ECMO) is increasingly used to treat high-risk pulmonary embolism (PE). However, its efficacy and safety remain uncertain. This retrospective cohort study aimed to determine whether ECMO could improve the clinical outcomes of patients with high-risk PE. Methods Forty patients with high-risk PE, who were admitted to Kaohsiung Chang Gung Memorial Hospital between January 2012 and December 2019, were included in this study. Demographic data and clinical outcomes were compared between patients treated without ECMO (non-ECMO group) and those treated with ECMO (ECMO group). Appropriate statistical tools were used to compare variables between groups and the survival was analyzed using the Kaplan-Meier method. Results The overall in-hospital mortality rate was 55%, in which 65% (26/40) of patients presented with cardiac arrest with a mortality rate of 77%, which was higher than that of patients without cardiac arrest (14%). There was no significant difference in major complications and in-hospital mortality between the non-ECMO and ECMO groups. However, in subgroup analysis, compared with patients treated without ECMO, earlier ECMO treatment was associated with a reduced risk of cardiac arrest (P = 0.023) and lower in-hospital mortality (P = 0.036). A log-rank test showed a significantly higher cumulative overall survival in the earlier ECMO treatment group (P = 0.033). Conclusions In this retrospective cohort study, earlier ECMO treatment was associated with lower in-hospital mortality among unstable patients without cardiac arrest. Our findings suggest that ECMO can be considered as an initial treatment option for patients with high-risk PE in higher-volume hospitals.
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Affiliation(s)
- Hao-Yu Tsai
- Kaohsiung Chang Gung Memorial Hospital Education Department, Kaohsiung, Taiwan
| | - Yu-Tang Wang
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Wei-Chieh Lee
- Division of Cardiology, Department of Internal Medicine, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Hsu-Ting Yen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chien-Ming Lo
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chia-Chen Wu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Kwan-Ru Huang
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Yin-Chia Chen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Jiunn-Jye Sheu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Yen-Yu Chen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung University College of Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
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Huang KL, Leung-Chit Tsang L, Yen HT, Chou YL, Tsai CC, Cheng HH, Lai YJ, Chen YC, Huang YJ, Lan KC, Hsu TY. Lethal acute aortic dissection complicated with ischemic bowels in the third trimester of pregnancy: A case report. Taiwan J Obstet Gynecol 2021; 59:740-743. [PMID: 32917328 DOI: 10.1016/j.tjog.2020.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2020] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Aortic dissection is a rare but lethal disease. We demonstrate a rare case of acute complicated Stanford type A aortic dissection in the third trimester. CASE REPORT A 41-year-old primiparous patient with chronic hypertension was brought to our emergency department at 34 weeks of gestation. She presented with acute tearing chest pain radiating to her back. Computed tomography revealed a Stanford type A aortic dissection. Primary cesarean section followed by open cardiovascular surgery was performed. However, ischemic bowels and bowel perforation occurred on the 9th and 11th postoperative days, respectively, and the patient died of septic shock on the 12th postoperative day. CONCLUSION Aortic dissection must be taken into consideration for pregnant women with chronic hypertension who present with acute tearing chest pain and pulseless unilateral extremities. Bowel ischemia may occur in patients with complicated Stanford type A aortic dissection.
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Affiliation(s)
- Kun-Long Huang
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Leo Leung-Chit Tsang
- Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsu-Ting Yen
- Department of Cardiac Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yu-Lun Chou
- Surgical Department, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ching-Chang Tsai
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsin-Hsin Cheng
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yun-Ju Lai
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yu-Chen Chen
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yu-Jen Huang
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Kuo-Chung Lan
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
| | - Te-Yao Hsu
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
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Chen YY, Yen HT, Wu CC, Huang KR, Sheu JJ, Lee FY. Aortic Thrombus in a Nonaneurysmal Ascending Aorta. Ann Vasc Surg 2020; 72:617-626. [PMID: 33249131 DOI: 10.1016/j.avsg.2020.10.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/13/2020] [Accepted: 10/18/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Ascending aortic thrombus (AAT) in a nonaneurysmal aorta is an extremely rare event and has potentially catastrophic complications, with a life-threatening risk of myocardial infarction and cerebral embolization. This systematic review aims to elucidate the clinical manifestations and to compare the outcomes of anticoagulation therapy versus open aortic surgery for AAT. METHODS The MEDLINE/PubMed databases were extensively searched between 1995 and 2019. All relevant publications on AAT in adults were reviewed, and individual patient data were pooled in this meta-analysis. The primary outcome was AAT resolution. The adverse outcome variables were recurrent arterial embolic events, complications related to open aortic surgery, and mortality during the study period. Chi-squared test and logistic regression analysis were used to compare groups and identify any predictors of mortality. RESULTS Overall, 107 patients from 101 articles were included, of whom 29 patients who received anticoagulation therapy and 59 who underwent open aortic surgery were included in the outcome analysis. Among 29 patients treated with initial anticoagulation therapy, the persistence of AAT was observed in 11 patients (38%) and recurrent arterial embolization was developed in 6 patients (21%). All 11 patients in the anticoagulation group underwent secondary aortic surgery for the persistence of AAT with uneventful postoperative course. Compared with patients treated with primary aortic surgery, patients treated with initial anticoagulation therapy had higher risk of recurrent embolization (P = 0.002). No significant difference existed in the mortality rates between the groups (P = 0.106). Hemodynamic instability was an independent predictor of mortality (P = 0.008). CONCLUSIONS Anticoagulation therapy and open aortic surgery for AAT show similar results; however, open aortic surgery reliably removes AAT and reduces the risk of recurrent embolization compared with anticoagulation therapy. Furthermore, the preoperative hemodynamic status significantly influences the clinical outcome and is a strong predictor of prognosis.
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Affiliation(s)
- Yen-Yu Chen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
| | - Hsu-Ting Yen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chia-Chen Wu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Kwan-Ru Huang
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Jiunn-Jye Sheu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Fan-Yen Lee
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Chen YY, Chen YC, Wu CC, Yen HT, Huang KR, Sheu JJ, Lee FY. Clinical course and outcome of patients with acute pulmonary embolism rescued by veno-arterial extracorporeal membrane oxygenation: a retrospective review of 21 cases. J Cardiothorac Surg 2020; 15:295. [PMID: 33008478 PMCID: PMC7532628 DOI: 10.1186/s13019-020-01347-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/28/2020] [Indexed: 01/21/2023] Open
Abstract
Background Veno-arterial extracorporeal membrane oxygenation (ECMO) is increasingly being utilized in patients with massive pulmonary embolism (PE). However, the efficacy and the safety remain uncertain. This study aimed to investigate clinical courses and outcomes in ECMO-treated patients with acute PE. Methods Twenty-one patients with acute PE rescued by ECMO from January 2012 to December 2019 were retrospectively analysed. Clinical features, laboratory biomarkers, and imaging findings of these patients were reviewed, and the relationship with immediate outcome and clinical course was investigated. Results Sixteen patients (76.2%) experienced refractory circulatory collapse requiring cardiopulmonary resuscitation (CPR) or ECMO support within 2 h after the onset of cardiogenic shock, and none could receive definitive reperfusion therapy before ECMO initiation. Before or during ECMO support, more than 90% of patients had imaging signs of right ventricular (RV) dysfunction. In normotension patients, the computed tomography (CT) value was a valuable predictor of rapid disease progression compared with cardiac troponin I level. Ultimately, in-hospital death occurred in ten patients (47.6%) and 90% of them died of prolonged CPR-related brain death. Cardiac arrest was a significant predictor of poor prognosis (p = 0.001). Conclusions ECMO appears to be a safe and effective circulatory support in patients with massive PE. Close monitoring in intensive care unit is recommended in patients with RV dysfunction and aggressive use of ECMO may reduce the risk of sudden cardiac arrest and improve clinical outcome.
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Affiliation(s)
- Yen-Yu Chen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Ta-Pei Road, NiaoSung, Kaohsiung City, 83301, Taiwan.
| | - Yin-Chia Chen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Ta-Pei Road, NiaoSung, Kaohsiung City, 83301, Taiwan
| | - Chia-Chen Wu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Ta-Pei Road, NiaoSung, Kaohsiung City, 83301, Taiwan
| | - Hsu-Ting Yen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Ta-Pei Road, NiaoSung, Kaohsiung City, 83301, Taiwan
| | - Kwan-Ru Huang
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Ta-Pei Road, NiaoSung, Kaohsiung City, 83301, Taiwan
| | - Jiunn-Jye Sheu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Ta-Pei Road, NiaoSung, Kaohsiung City, 83301, Taiwan
| | - Fan-Yen Lee
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Ta-Pei Road, NiaoSung, Kaohsiung City, 83301, Taiwan
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Chen YY, Yen HT, Lo CM, Wu CC, Huang DKR, Sheu JJ. Natural courses and long-term results of type A acute aortic intramural haematoma and retrograde thrombosed type A acute aortic dissection: a single-centre experience. Interact Cardiovasc Thorac Surg 2020; 30:113-120. [PMID: 31518390 DOI: 10.1093/icvts/ivz222] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 08/09/2019] [Accepted: 08/16/2019] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Few reports on the outcomes of patients treated for Stanford type A acute aortic intramural haematoma (TAAIMH) and retrograde thrombosed type A acute aortic dissection exist. This study aimed to evaluate their long-term results and predictors of adverse outcomes. METHODS We retrospectively analysed 40 patients with TAAIMH and retrograde thrombosed type A acute aortic dissection. All patients underwent urgent surgery on presentation of life-threatening complications. Before discharge, 18 patients underwent open aortic surgery, and 22 were treated with medical therapy alone. Clinical features of these patients and image appearances were reviewed, and the relationship with overall survival, aortic events, and aortic death was investigated. RESULTS The in-hospital mortality rate was 4.5% (1 patient) with medical therapy alone and 11.1% (2 patients) with surgical intervention. No patient with initial medical therapy required urgent surgery for life-threatening complications beyond 3 days of admission. The overall survival and aortic death-free survival rates at 1, 5 and 10 years were 85.0%, 72.5% and 59.8% and 90.0%, 81.6% and 77.1%, respectively. TAAIMH associated with penetrating aortic ulcer (PAU) was a risk factor of aortic events (P = 0.020) and significantly influenced aortic death-free survival (P = 0.003). CONCLUSIONS Urgent surgery for complicated TAAIMH and retrograde thrombosed type A acute aortic dissection patients and initial medical therapy for uncomplicated patients show favourable long-term survival rates. TAAIMH is frequently associated with PAU; PAU enlargement is common. Although PAU can remain stable for years, it is a strong predictor of poor prognosis. For optimal long-term results, surgical repair is recommended for TAAIMH associated with PAU.
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Affiliation(s)
- Yen-Yu Chen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsu-Ting Yen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chien-Ming Lo
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chia-Chen Wu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - David Kwan-Ru Huang
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Jiunn-Jye Sheu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Hsu CB, Lee JW, Huang HJ, Wang CH, Lee TT, Yen HT, Yu B. Effects of supplemental glutamine on growth performance, plasma parameters and LPS-induced immune response of weaned barrows after castration. Asian-Australas J Anim Sci 2012; 25:674-81. [PMID: 25049613 PMCID: PMC4093117 DOI: 10.5713/ajas.2011.11359] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 02/06/2012] [Accepted: 12/10/2011] [Indexed: 12/15/2022]
Abstract
Two experiments were conducted to investigate the effects of supplemental glutamine on growth performance, plasma parameters and LPS-induced immune response of weaned barrows after castration. In experiment 1, forty-eight weaned male piglets were used and fed maize and soybean meal diets supplemented with 0 (Control) or 2% L-Gln (Gln+) for 25 days. The results indicated that the Gln+ group tended to increase average daily gain compared to control in stages of days 7 to 14 and 0 to 25. The Gln+ had significantly better feed efficiency than the control group did during days 14 to 25 and 0 to 25. The plasma blood urea nitrogen and alkaline phosphatase contents of Gln+ group were higher than those of the control group on day 14 post-weaning. In experiment 2, sixteen weaned male piglets were injected with E. coli K88+ lipopolysaccharide (LPS) on day 14 post-weaning. The results showed that the Gln+ group had lower concentrations of plasma adrenocorticotrophic hormone and cortisol than the control group on day 14 pre-LPS challenge. In addition, Gln+ group had higher plasma IgG concentration than the control group for pre- or post-LPS challenged on day 14 post-weaning. In summary, dietary supplementation of Gln was able to alleviate the stressful condition and inflammation associated with castration in weaned barrows, and to improve their immunity and growth performance in the early starter stage.
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Affiliation(s)
- C B Hsu
- Kaohsiung Animal Propagation Station, Livestock Research Institute, COA, Pingtung 912, Taiwan ; Department of Animal Science, National Chung Hsing University, Taichung 402, Taiwan
| | - J W Lee
- Department of Animal Science, National Chung Hsing University, Taichung 402, Taiwan
| | - H J Huang
- Kaohsiung Animal Propagation Station, Livestock Research Institute, COA, Pingtung 912, Taiwan
| | - C H Wang
- Kaohsiung Animal Propagation Station, Livestock Research Institute, COA, Pingtung 912, Taiwan
| | - T T Lee
- Department of Biotechnology, Ming Dao University, Changhau 523, Taiwan
| | - H T Yen
- Animal Technology Institute Taiwan, P.O. box 23, Chunan, Miaoli 350, Taiwan
| | - B Yu
- Department of Animal Science, National Chung Hsing University, Taichung 402, Taiwan
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Chai HT, Tan BL, Yen HT, Chen MC. Infective endocarditis caused by Streptococcus bovis complicated by a superior mesenteric artery mycotic aneurysm and systemic septic emboli in a patient with colon diverticulitis. Int J Infect Dis 2010; 14 Suppl 3:e317-8. [DOI: 10.1016/j.ijid.2010.02.2258] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2009] [Revised: 12/05/2009] [Accepted: 02/26/2010] [Indexed: 11/26/2022] Open
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Lee DN, Chuang YS, Chiou HY, Wu FY, Yen HT, Weng CF. Oral administration recombinant porcine epidermal growth factor enhances the jejunal digestive enzyme genes expression and activity of early-weaned piglets. J Anim Physiol Anim Nutr (Berl) 2007; 92:463-70. [PMID: 18662356 DOI: 10.1111/j.1439-0396.2007.00735.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study attempted to determine ingested porcine epidermal growth factor (pEGF) on the gastrointestinal tract development of early-weaned piglets. Thirty-two piglets (14-day weaned) were randomly allotted to supplemented with 0 (control), 0.5, 1.0, or 1.5 mg pEGF/kg diet. Each treatment consisted of four replicates with two pigs per pen for a 14 days experimental period. Piglets were sacrificed and gastrointestinal tract samples were collected to measure mucosa morphology, mRNA expression and activities of digestive enzymes in the gastrointestinal tract of piglets at the end of the experiment. Diets supplemented with pEGF failed to influence growth performance but tended to increase jejunal mucosa weight (p < 0.09) and protein content (p < 0.07). Piglets supplemental pEGF induced incrementally the gastric pepsin activity (p < 0.05) and stimulated jejunal alkaline phosphatase (ALP) and lactase activities accompanied with the increase of jejunal ALP and maltase mRNA expression. No effect of pEGF on the activities of all enzymes in ileum except the stimulation of ileal aminopeptide N mRNA expression. These results reveal that dietary pEGF supplementation might enhance gene expression and activities of digestive enzymes in the stomach and jejunum of piglets.
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Affiliation(s)
- D N Lee
- Department of Animal Science, National Ilan University, Ilan, Taiwan, Republic of China
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Yen HT, Lu HY, Liu HP, Hsieh MJ. Video-assisted thoracoscopic surgery for hydrothorax in peritoneal dialysis patients — check-air-leakage method. Eur J Cardiothorac Surg 2005; 28:648-9. [PMID: 16179196 DOI: 10.1016/j.ejcts.2005.06.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2005] [Revised: 06/10/2005] [Accepted: 06/13/2005] [Indexed: 10/25/2022] Open
Abstract
Hydrothorax developing from pleuroperitoneal communication as a complication of peritoneal dialysis was first described in 1967 [Edward SR, Unger AM. Acute hydrothorax-a new complication of peritoneal dialysis. JAMA 1967; 199:853-5. ]. The incidence of hydrothorax is approximately 1.6-2% of continuous ambulatory peritoneal dialysis (CAPD) patients. The key to successful therapy is obliteration of the transdiaphragmatic route of dialysate leakage with video-assisted thoracoscopic surgery (VATS). The method in which air leakage is checked intraoperatively is the preferred choice and better than all other procedures.
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Affiliation(s)
- Hsu-Ting Yen
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Kaohsiung, 123, Ta-Pei Road, Niao Sung Hsiang, Kaohsiung Hsien, Taiwan, ROC
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Yen HT, Hsieh MJ, Yen Lee F, Lu HY, Chang JP. P10-13 The surgical experience in a patient with left upper lung cancer and intra-left atrial invasive mass extended via the pulmonary vein—A case report. Int J Cardiol 2004. [DOI: 10.1016/s0167-5273(04)80234-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chang JP, Yen HT, Kao CL, Lu HI, Lee FY, Hsieh MJ. O11-07 Versatile use of the stentless aortic root bioprosthesis. Int J Cardiol 2004. [DOI: 10.1016/s0167-5273(04)80129-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lee DN, Yen HT, Shen TF, Chen BJ. Chromium-induced glucose uptake, superoxide anion production, and phagocytosis in cultured pulmonary alveolar macrophages of weanling pigs. Biol Trace Elem Res 2000; 77:53-64. [PMID: 11097471 DOI: 10.1385/bter:77:1:53] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2000] [Accepted: 02/08/2000] [Indexed: 11/11/2022]
Abstract
The dose-dependent effects of chromium chloride (CrCl3) and chromium picolinate (CrPic) were evaluated for their glucose uptake, superoxide anion (O2-) production, activity of glucose-6-phosphate dehydrogenase, and phagocytosis of incubated pulmonary alveolar macrophages in medium containing no or 5 x 10(-8)M insulin. Glucose uptake was found to increase in cells treated with 20 microg/L CrCl3. Incubation with 20 microg/L of CrPic enhanced glucose uptake and O2- production in an insulin-dependent manner. However, the inclusion of CrPic to 100 microg/L in the medium absent of insulin also increased O2- production. The activity of glucose-6-phosphate dehydrogenase was not affected by either the addition of Cr or insulin. The phagocytosis of Escherichia coli by macrophages was enhanced significantly (p < 0.05) in medium containing 10-100 microg/L CrCl3 or 20-100 microg/L CrPic in the presence of insulin. These results suggest that the addition of 10-20 microg/L CrCl3 enhances directly the cellular activity of macrophages, whereas the effect of CrPic requires the cooperative action of insulin in enhancing their glucose uptake and phagocytosis.
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Affiliation(s)
- D N Lee
- Department of Animal Science, National I-Lan Institute of Technology, Taiwan, Republic of China
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Chai CY, Yu HS, Yen HT, Tsai KB, Chen GS, Yu CL. The inhibitory effect of UVB irradiation on the expression of p53 and Ki-67 proteins in arsenic-induced Bowen's disease. J Cutan Pathol 1997; 24:8-13. [PMID: 9027627 DOI: 10.1111/j.1600-0560.1997.tb00779.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The aim of this study is to evaluate the effect of ultraviolet B (UVB) on arsenic-induced Bowen's disease. Four patients were irradiated with 750 mJ/cm2 of UVB and biopsies were performed before treatment and 2 weeks later. Immunohistochemical stains of p53 and Ki-67 were compared by the labelled-streptavidin method before and after the UVB treatment. We found that the number of p53 and Ki-67 positive cells after the UVB treatment were significantly fewer than those of non-UVB-treated specimens. These results suggest that the UVB inhibitory effect in Bowen's disease needs further studies to clarify its value in potentially retarding the progression of the hyperproliferative status in overt skin cancer on a molecular basis.
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Affiliation(s)
- C Y Chai
- Department of Pathology, Kaohsiung Medical College, Taiwan, Republic of China
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Affiliation(s)
- H T Yen
- Graduate Institute of Medical Sciences, Kaohsiung Medical College, Taiwan, Republic of China
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Yen HT, Chiang LC, Wen KH, Tsai CC, Yu CL, Yu HS. The expression of cytokines by an established basal cell carcinoma cell line (BCC-1/KMC) compared with cultured normal keratinocytes. Arch Dermatol Res 1996; 288:157-61. [PMID: 8967785 DOI: 10.1007/bf02505826] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A basal cell carcinoma (BCC) cell line (BCC-1/KMC) has recently been successfully established from a patient. The production of interleukin-1 alpha (IL-1 alpha), IL-1 beta, IL-6 and IL-8 was assessed in comparison with that of cultured normal keratinocytes. The mRNA expression of these cytokines was measured by a reverse transcriptase-polymerase chain reaction (RT-PCR) method and the protein production by an ELISA. The cultured BCC cells spontaneously secreted more IL-6 and IL-8 but less IL-1 than the keratinocytes after culture for 24 h at 37 degrees C. It is suggested that the increased expression of IL-6 and IL-8 may indicate the transformation of normal keratinocytes to locally aggressive BCC.
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Affiliation(s)
- H T Yen
- Graduate Institute of Medical Sciences, Kaohsiung Medical College, Taiwan, ROC
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Lin TJ, Hung DZ, Yen HT, Ger J, Deng JF. Survival of paraquat intoxication complicated with mediastinal emphysema: a case report. Zhonghua Yi Xue Za Zhi (Taipei) 1994; 54:363-7. [PMID: 7834561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Paraquat intoxication is a common medical problem in this country. The mortality is high, particularly in the cases of high dose ingestion. Mediastinal emphysema observed in paraquat intoxication always means mortality, however, we experienced a survivor. A 29 y/o female ingested about 10-15 c.c. of 24% (2.4-3.6 gm) paraquat to attempt suicide. Nausea and protracted vomiting occurred shortly after. During hospitalization, mediastinal emphysema developed on the 7th day and subsided 10 days later. Serum paraquat level determination revealed 185 ng/ml in 20 hours after ingestion and 34 ng/ml on the 6th day. She received general supportive treatments with the augmentation of sodium thiosulfate. Hypokalemia had been observed for 11 days and was intractable until hypomagnesemia was identified and corrected. So far, she had returned back to her work for more than 1 year, although the chest x-ray revealed slight pulmonary fibrosis. The high ingested dose, oral ulcers, high serum level and mediastinal emphysema of this patient all implicate a poor prognosis of paraquat intoxication; however, these contradict the observed survival of our patient. In conclusion, mediastinal emphysema observed in paraquat intoxication is not related to the serum level of paraquat. It does not absolutely lead to death and may simply come from the esophageal rupture after vigorous vomiting in paraquat intoxication.
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Affiliation(s)
- T J Lin
- Department of Medicine, Veterans General Hospital-Taipei, Taiwan, R.O.C
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Yen HT, Diau MH, Tsai JW, Roan RT. Dilaceration of a central incisor with iatrogenic root perforation--a case report. Gaoxiong Yi Xue Ke Xue Za Zhi 1991; 7:386-90. [PMID: 1875461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Dilacerated tooth is caused by disruption of the follicle of the developing tooth secondary to traumatic injury of its deciduous predecessor. This case presented a dilacerated permanent maxillary incisor which was perforated in root canal at buccal side by general practitioner and treated successfully by conservative endodontic therapy.
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Affiliation(s)
- H T Yen
- School of Dentistry, Department of Endodontics, Kaohsiung Medical College, Taiwan, Republic of China
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