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Beauchamp-Parent C, Jomphe V, Morisset J, Poirier C, Lands LC, Nasir BS, Ferraro P, Mailhot G. Impact of Transplant Body Mass Index and Post-Transplant Weight Changes on the Development of Chronic Lung Allograft Dysfunction Phenotypes. Transplant Proc 2024; 56:1420-1428. [PMID: 38991901 DOI: 10.1016/j.transproceed.2024.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 04/26/2024] [Indexed: 07/13/2024]
Abstract
INTRODUCTION Chronic lung allograft dysfunction (CLAD) is a lung transplant complication for which four phenotypes are recognized: Bronchiolitis obliterans syndrome (BOS), Restrictive allograft syndrome (RAS), mixed and undefined phenotypes. Weight gain is common after transplant and may negatively impact lung function. Study objectives were to describe post-transplant weight trajectories of patients who developed (or did not) CLAD phenotypes and examine the associations between BMI at transplant, post-transplant changes in weight and BMI, and the risk of developing these phenotypes. METHODS Adults who underwent a bilateral lung transplant between 2000 and 2020 at our institution were categorized as having (or not) one of the four CLAD phenotypes based on the proposed classification system. Demographic, anthropometric, and clinical data were retrospectively collected from medical records and analyzed. RESULTS Study population included 579 recipients (412 [71.1%] CLAD-free, 81 [14.0%] BOS, 20 [3.5%] RAS, 59 [10.2%] mixed, and 7 [1.2%] undefined phenotype). Weight gains of greater amplitude were seen in recipients with restrictive phenotypes than CLAD-free and BOS patients within the first five years post-transplant. While the BMI category at transplant was not statistically associated with the risk of developing CLAD phenotypes, an increase in weight (Hazard ratio [HR]: 1.04, 95% CI [1.01-1.08]; P = .008) and BMI (HR: 1.13, 95% CI [1.03-1.23]; P = .008) over the post-transplant period was associated with a greater risk of RAS. CONCLUSION Post-LTx gain in weight and BMI modestly increased the risk of RAS, adding to the list of unfavorable outcomes associated with weight gain following transplant.
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Affiliation(s)
- Caroline Beauchamp-Parent
- Department of Nutrition, Faculty of Medicine, Université de Montreal, Montreal, Quebec, Canada; Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Valérie Jomphe
- Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Julie Morisset
- Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada; Department of Medicine, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Charles Poirier
- Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada; Department of Medicine, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Larry C Lands
- Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada; Department of Pediatrics, Faculty of Medicine, McGill University Health Center, Montreal, Quebec, Canada
| | - Basil S Nasir
- Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada; Division of Thoracic Surgery, Department of Surgery, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Pasquale Ferraro
- Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada; Division of Thoracic Surgery, Department of Surgery, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Geneviève Mailhot
- Department of Nutrition, Faculty of Medicine, Université de Montreal, Montreal, Quebec, Canada; Research Centre, CHU Sainte-Justine, Montreal, Quebec, Canada.
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Abdulqawi R, Saleh RA, Devol E, Aldakhil H, Saleh W, Hashim M, Albogumi E, Algwaiz G, Khalid M, Al-Mutairy EA. Lung transplantation outcomes in underweight recipients: A single center experience. Heliyon 2023; 9:e15080. [PMID: 37095975 PMCID: PMC10121808 DOI: 10.1016/j.heliyon.2023.e15080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Background Current guidelines recommend a body mass index (BMI) of 16 kg/m2 as the minimum threshold for lung transplantation, despite mixed evidence on outcomes in underweight patients. The current study aimed to describe survival outcomes of underweight patients who underwent lung transplantation at a single center. Methods This retrospective observational study included adult lung transplant recipients who underwent transplantation for the first time between March 2010 and March 2022 at King Faisal Specialist Hospital and Research Center and excluded patients with obesity. We defined an underweight status as a BMI <17 kg/m2. Results Forty-eight of the 202 lung transplant recipients were underweight at the time of surgery. The underweight patients had similar lengths of hospital (p = 0.53) and intensive care unit (p = 0.81) stays compared to other patients. Thirty-three percent of underweight patients had died within 5-year follow-up, compared to 34% of patients who were not underweight. There was no significant difference in mortality risk between underweight patients and patients with normal BMIs in our multivariable Cox regression model (adjusted HR 1.57, 95%CI: 0.77-3.20, p = 0.21). Exploratory analyses revealed that a pre-transplant BMI <13 kg/m2 was associated with a trend towards increased 5-year mortality (adjusted HR 4.00, 95%CI: 0.87-18.35, p = 0.07). Conclusions Our findings suggest that patients with BMIs of 13-17 kg/m2 may be candidates for lung transplantation. Large multi-center cohort studies are needed to confirm the lower BMI limit for safely transplanting patients.
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Rudym D, Natalini JG, Trindade AJ. Listing Dilemmas: Age, Frailty, Weight, Preexisting Cancers, and Systemic Diseases. Clin Chest Med 2023; 44:35-46. [PMID: 36774166 DOI: 10.1016/j.ccm.2022.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Selection of lung transplant candidates is an evolving field that pushes the boundaries of what is considered the norm. Given the continually changing demographics of the typical lung transplant recipient as well as the growing list of risk factors that predispose patients to poor posttransplant outcomes, we explore the dilemmas in lung transplant candidate selections pertaining to older age, frailty, low and high body mass index, preexisting cancers, and systemic autoimmune rheumatic diseases.
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Affiliation(s)
- Darya Rudym
- Division of Pulmonary and Critical Care Medicine, New York University, Langone Health, 530 First Avenue, HCC-4A, New York, NY 10016, USA.
| | - Jake G Natalini
- Division of Pulmonary and Critical Care Medicine, New York University, Langone Health, 530 First Avenue, HCC-4A, New York, NY 10016, USA
| | - Anil J Trindade
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Oxford House, Room 539, 1313 21st Avenue South, Nashville, TN 37232, USA
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High visceral adipose tissue area is independently associated with early allograft dysfunction in liver transplantation recipients: a propensity score analysis. Insights Imaging 2022; 13:165. [PMID: 36219263 DOI: 10.1186/s13244-022-01302-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 09/20/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES To evaluate the association between adipose tissue distribution and early allograft dysfunction (EAD) in liver transplantation (LT) recipients. METHODS A total of 175 patients who received LT from April 2015 to September 2020 were enrolled in this retrospective study. The areas of abdominal adipose tissue and skeletal muscle of all patients were measured based on the preoperative CT images. The appropriate statistical methods including the propensity score-matched (PSM) analysis were performed to identify the association between adipose tissue distribution and EAD. RESULTS Of 175 LT recipients, 55 patients (31.4%) finally developed EAD. The multivariate logistic analysis revealed that preoperative serum albumin (odds ratio (OR) 0.34, 95% confidence interval (CI) 0.17-0.70), platelet-lymphocyte ratio (OR 2.35, 95% CI 1.18-4.79), and visceral adipose tissue (VAT) area (OR 3.17, 95% CI 1.56-6.43) were independent associated with EAD. After PSM analysis, VAT area was still significantly associated with EAD (OR 3.95, 95% CI 1.16-13.51). In survival analysis, no significant difference was identified in one-year graft failure (log-rank: p = 0.487), and conversely result was identified in overall survival (OS) (log-rank: p = 0.012; hazard ratio (HR) 4.10, 95% CI 1.27-13.16). CONCLUSIONS LT recipients with high VAT area have higher risk for the occurrence of EAD, and high VAT area might have certain clinical value for predicting the poor OS of patients. For LT candidates with large amount of VAT, the clinicians can take clinical interventions by suggesting physical and nutritional treatments to improve outcomes after LT.
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Son J, Shin C. Indications for Lung Transplantation and Patient Selection. J Chest Surg 2022; 55:255-264. [PMID: 35924530 PMCID: PMC9358156 DOI: 10.5090/jcs.22.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 07/18/2022] [Indexed: 11/16/2022] Open
Abstract
Globally, thousands of patients undergo lung transplantation owing to end-stage lung disease each year. As lung transplantation evolves, recommendations and indications are constantly being updated. In 2021, the International Society for Heart and Lung Transplantation published a new consensus document for selecting candidates for lung transplantation. However, it is still difficult to determine appropriate candidates for lung transplantation among patients with complex medical conditions and various diseases. Therefore, it is necessary to analyze each patient’s overall situation and medical condition from various perspectives, and ongoing efforts to optimize the analysis will be necessary. The purpose of this study is to review the extant literature and discuss recent updates.
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Affiliation(s)
- Joohyung Son
- Department of Thoracic and Cardiovascular Surgery, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Changwon Shin
- Department of Thoracic and Cardiovascular Surgery, Pusan National University Yangsan Hospital, Yangsan, Korea
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Chuang JH, Lu PH, Anh NV, Diep TK, Liu HY, Chiang XH, Ho CM, Huang SC, Hsu HH. Mortality risk factors in patients on waiting list for lung transplantation between 2005 and 2018: A single institutional experience. J Formos Med Assoc 2022; 121:2566-2573. [PMID: 35764487 DOI: 10.1016/j.jfma.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Lung transplantation is a therapeutic option for patients with end-stage lung disease. However, the increase in organ demand has surpassed the number of donors, with many patients unable to outlive the long waiting period. This study aimed to assess mortality and its risk factors in patients on the waiting list for lung transplantation in a single medical centre. METHODS All evaluated clinical and laboratory data of the patients with end-stage lung disease assessed for lung transplantation between February 2005 and November 2018 in National Taiwan University Hospital were recorded in the waiting list database. The patients in this study were divided into two groups: survival and death groups. RESULTS Between February 2005 and November 2018, 169 patients were enrolled in the waiting list. Thirty-one patients were alive and waiting for the chance of lung transplantation, 56 underwent lung transplantation, and 82 died while waiting. The mean age of all patients was 43.7 years, and 91 were women. The mean body mass index (BMI) was 20.3. The most common blood type was type O. All patients were in New York Heart Association (NYHA) class III or IV. After analysis of the two groups, lower BMI presented as a mortality factor. CONCLUSION This is the first Taiwanese study to describe the mortality factors in patients waiting for lung transplantation. The main factors influencing the survival of these patients were lower BMI, NYHA class IV, and diseases which cause end-stage lung diseases (infection and pulmonary fibrosis).
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Affiliation(s)
- Jen-Hao Chuang
- Department of Surgical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan; Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Pham Huu Lu
- Cardiovascular and Thoracic Center, Viet Duc University Hospital, Hanoi Medical University, Hanoi, Viet Nam
| | - Nguyen Viet Anh
- Cardiovascular and Thoracic Center, Viet Duc University Hospital, Hanoi Medical University, Hanoi, Viet Nam
| | - Trinh Ke Diep
- Department of Anesthesiology, Viet Duc University Hospital, Hanoi Medical University, Hanoi, Viet Nam
| | - Hao-Yun Liu
- Department of Surgery, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Xu-Heng Chiang
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan; Department of Medical Education, National Taiwan University Hospital, Taipei, Taiwan
| | - Cheng-Maw Ho
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shu-Chien Huang
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hsao-Hsun Hsu
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
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New-onset Obesity After Lung Transplantation: Incidence, Risk Factors, and Clinical Outcomes. Transplantation 2022; 106:2247-2255. [PMID: 35749757 DOI: 10.1097/tp.0000000000004222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Lung transplant (LTx) recipients who gain weight after transplantation may experience an upward shift in body mass index (BMI) that places them in the obese category. The incidence, risk factors, and impact on metabolic health and mortality of new-onset obesity have not been documented in the LTx setting. METHODS This single-center retrospective study included 564 LTx recipients. Individuals were stratified according to their BMI trajectories from pretransplant evaluation up to 10 y posttransplant. New-onset obesity was defined as a pretransplant BMI <30 kg/m2 and posttransplant BMI >30 kg/m2. The incidence, risk factors, and posttransplant diabetes mellitus, metabolic syndrome, and mortality of recipients with new-onset obesity were compared with those of nonobese (BMI <30 kg/m2, pre/post-LTx), consistently obese (BMI >30 kg/m2, pre/post-LTx), and obese recipients with weight loss (BMI >30 kg/m2 pre-LTx, BMI <30 kg/m2 post-LTx). RESULTS We found that 14% of recipients developed obesity after transplantation. Overweight individuals (odds ratio [OR]: 9.01; 95% confidence interval [CI] [4.86-16.69]; P < 0.001) and candidates with chronic obstructive pulmonary disease (OR: 6.93; 95% CI [2.30-20.85]; P = 0.001) and other diagnoses (OR: 4.28; 95% CI [1.22-14.98]; P = 0.023) were at greater risk. Multivariable regression analysis showed that new-onset obesity was associated with a greater risk of metabolic syndrome (hazard ratio: 1.70; 95% CI [1.17-2.46]; P = 0.005), but not of posttransplant diabetes mellitus, than nonobesity. Recipients with new-onset obesity had a survival comparable to that of consistently obese individuals. CONCLUSIONS A greater understanding of the multifaceted nature of post-LTx obesity may lead to interventions that are better tailored to the characteristics of these individuals.
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Murray AW, Boisen ML, Fritz A, Renew JR, Martin AK. Anesthetic considerations in lung transplantation: past, present and future. J Thorac Dis 2022; 13:6550-6563. [PMID: 34992834 PMCID: PMC8662503 DOI: 10.21037/jtd-2021-10] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 02/10/2021] [Indexed: 01/01/2023]
Abstract
Lung transplantation is a very complex surgical procedure with many implications for the anesthetic care of these patients. Comprehensive preoperative evaluation is an important component of the transplant evaluation as it informs many of the decisions made perioperatively to manage these complex patients effectively and appropriately. These decisions may involve pre-emptive actions like pre-habilitation and nutrition optimization of these patients before they arrive for their transplant procedure. Appropriate airway and ventilation management of these patients needs to be performed in a manner that provides an optimal operating conditions and protection from ventilatory injury of these fragile post-transplant lungs. Pain management can be challenging and should be managed in a multi-modal fashion with or without the use of an epidural catheter while recognizing the risk of neuraxial technique in patients who will possibly be systemically anticoagulated. Complex monitoring is required for these patients involving both invasive and non-invasive including the use of transesophageal echocardiography (TEE) and continuous cardiac output monitoring. Management of the patient's hemodynamics can be challenging and involves managing the systemic and pulmonary vascular systems. Some patients may require extra-corporeal lung support as a planned part of the procedure or as a rescue technique and centers need to be proficient in instituting and managing this sophisticated method of hemodynamic support.
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Affiliation(s)
- Andrew W Murray
- Department of Anesthesiology, Mayo Clinic Graduate School of Medicine, Mayo Clinic, Phoenix, AZ, USA
| | - Michael L Boisen
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Ashley Fritz
- Division of Cardiothoracic and Thoracic Anesthesiology, Mayo Clinic, Jacksonville, FL, USA
| | - J Ross Renew
- Department of Anesthesiology, Mayo Clinic Graduate School of Medicine, Mayo Clinic, Jacksonville, FL, USA
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Leard LE, Holm AM, Valapour M, Glanville AR, Attawar S, Aversa M, Campos SV, Christon LM, Cypel M, Dellgren G, Hartwig MG, Kapnadak SG, Kolaitis NA, Kotloff RM, Patterson CM, Shlobin OA, Smith PJ, Solé A, Solomon M, Weill D, Wijsenbeek MS, Willemse BWM, Arcasoy SM, Ramos KJ. Consensus document for the selection of lung transplant candidates: An update from the International Society for Heart and Lung Transplantation. J Heart Lung Transplant 2021; 40:1349-1379. [PMID: 34419372 PMCID: PMC8979471 DOI: 10.1016/j.healun.2021.07.005] [Citation(s) in RCA: 318] [Impact Index Per Article: 106.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 07/14/2021] [Indexed: 02/06/2023] Open
Abstract
Tens of thousands of patients with advanced lung diseases may be eligible to be considered as potential candidates for lung transplant around the world each year. The timing of referral, evaluation, determination of candidacy, and listing of candidates continues to pose challenges and even ethical dilemmas. To address these challenges, the International Society for Heart and Lung Transplantation appointed an international group of members to review the literature, to consider recent advances in the management of advanced lung diseases, and to update prior consensus documents on the selection of lung transplant candidates. The purpose of this updated consensus document is to assist providers throughout the world who are caring for patients with pulmonary disease to identify potential candidates for lung transplant, to optimize the timing of the referral of these patients to lung transplant centers, and to provide transplant centers with a framework for evaluating and selecting candidates. In addition to addressing general considerations and providing disease specific recommendations for referral and listing, this updated consensus document includes an ethical framework, a recognition of the variability in acceptance of risk between transplant centers, and establishes a system to account for how a combination of risk factors may be taken into consideration in candidate selection for lung transplantation.
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Affiliation(s)
| | | | | | | | - Sandeep Attawar
- Krishna Institute of Medical Sciences Institute for Heart and Lung Transplantation, Hyderabad, India
| | | | - Silvia V Campos
- Heart Institute (InCor) University of Sao Paulo Medical School, Sao Paulo, Brazil
| | | | | | - Göran Dellgren
- Sahlgrenska University Hospital and University of Gothenburg, Sweden
| | | | | | | | | | | | | | | | | | - Melinda Solomon
- Hospital for Sick Children, University of Toronto, Ontario, Canada
| | - David Weill
- Weill Consulting Group, New Orleans, Louisiana
| | | | - Brigitte W M Willemse
- Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Padilla-Ruiz M, Zarcos-Pedrinaci I, Rivas-Ruiz F, Téllez T, García-Gutiérrez S, González N, Rivero A, Sarasqueta C, Serrano-Aguilar P, Castells X, Quintana JM, Sala M, Redondo M, Castells X, Comas M, Domingo L, Macià F, Roman M, Romero A, Sala M, Barata T, de la Lastra ID, de la Vega M, Bare M, Torà N, Ferrer J, Castanyer F, Carmona C, García S, Martín M, González N, Orive M, Valverde MA, Saez A, Barredo I, de Toro M, Ferreiro J, Quintana JM, Pérez J, Rivero A, Valcárcel C, Padilla M, Redondo M, Téllez T, Zarcos I, Churruca C, Perales A, Recio J, Ruiz I, Sarasqueta C, Urraca JM, Michelena MJ, Moreno J, Mallabiabarrena G, Cobos P, Otero B, Gorostiaga J, Troya I. Factors that Influence Treatment Delay for Patients with Breast Cancer. Ann Surg Oncol 2020; 28:3714-3721. [PMID: 33247362 DOI: 10.1245/s10434-020-09409-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/03/2020] [Indexed: 01/14/2023]
Abstract
INTRODUCTION The diagnosis or treatment of breast cancer is sometimes delayed. A lengthy delay may have a negative psychological impact on patients. The aim of our study was to evaluate the sociodemographic, clinical and pathological factors associated with delay in the provision of surgical treatment for localised breast cancer, in a prospective cohort of patients. METHODS This observational, prospective, multicentre study was conducted in ten hospitals belonging to the Spanish national public health system, located in four Autonomous Communities (regions). The study included 1236 patients, diagnosed through a screening programme or found to be symptomatic, between April 2013 and May 2015. The study variables analysed included each patient's personal history, care situation, tumour history and data on the surgical intervention, pathological anatomy, hospital admission and follow-up. Treatment delay was defined as more than 30 days elapsed between biopsy and surgery. RESULTS Over half of the study population experienced surgical treatment delay. This delay was greater for patients with no formal education and among widows, persons not requiring assistance for usual activities, those experiencing anxiety or depression, those who had a high BMI or an above-average number of comorbidities, those who were symptomatic, who did not receive NMR spectroscopy, who presented a histology other than infiltrating ductal carcinoma or who had poorly differentiated carcinomas. CONCLUSIONS Certain sociodemographic and clinical variables are associated with surgical treatment delay. This study identifies factors that influence surgical delays, highlighting the importance of preventing these factors and of raising awareness among the population at risk and among health personnel.
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Affiliation(s)
- María Padilla-Ruiz
- Research Unit, Agencia Sanitaria Costa del Sol, Hospital Costa del Sol University of Málaga, Marbella, Spain.,Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain
| | - Irene Zarcos-Pedrinaci
- Oncology Service, Hospital Costa del Sol, Marbella, Spain.,Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain
| | - Francisco Rivas-Ruiz
- Research Unit, Agencia Sanitaria Costa del Sol, Hospital Costa del Sol University of Málaga, Marbella, Spain.,Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain
| | - Teresa Téllez
- Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain
| | - Susana García-Gutiérrez
- Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain.,Research Unit, Galdakao-Usansolo Hospital Osakidetza, Galdakao, Bizkaia, Spain
| | - Nerea González
- Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain.,Research Unit, Galdakao-Usansolo Hospital Osakidetza, Galdakao, Bizkaia, Spain
| | - Amado Rivero
- Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain.,Canary Islands Foundation for Health Care Research (FUNCANIS), Tenerife, Spain
| | - Cristina Sarasqueta
- Unidad de Investigación, Instituto de Investigación Sanitaria BioDonostia, Hospital Universitario Donostia - REDISSEC, Donostia, Gipuzkoa, Spain
| | - Pedro Serrano-Aguilar
- Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain.,Evaluation Unit of the Canary Islands Health Service (SESCS), Tenerife, Spain
| | - Xavier Castells
- Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain.,Department of Epidemiology and Evaluation, Hospital del Mar Medical Research Institute (IMIM), Autonomous University of Barcelona, Barcelona, Spain
| | - José María Quintana
- Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain.,Research Unit, Galdakao-Usansolo Hospital Osakidetza, Galdakao, Bizkaia, Spain
| | - María Sala
- Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain.,Department of Epidemiology and Evaluation, Hospital del Mar Medical Research Institute (IMIM), Autonomous University of Barcelona, Barcelona, Spain
| | - Maximino Redondo
- Research Unit, Agencia Sanitaria Costa del Sol, Hospital Costa del Sol University of Málaga, Marbella, Spain. .,Health Services Network for Research into Chronic Diseases (REDISSEC), Madrid, Spain.
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Tang T, Tan Y, Xiao B, Zu G, An Y, Zhang Y, Chen W, Chen X. Influence of Body Mass Index on Perioperative Outcomes Following Pancreaticoduodenectomy. J Laparoendosc Adv Surg Tech A 2020; 31:999-1005. [PMID: 33181060 DOI: 10.1089/lap.2020.0703] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: Overweight and obesity are increasing year by year all over the world, and there is a correlation between overweight and obesity and the risk of pancreatic cancer. However, the relationship between overweight and obesity and perioperative outcomes of pancreaticoduodenectomy (PD) was controversial. The purpose of this study was to investigate the effect of body mass index (BMI) on the perioperative outcome of PD. Methods: This study retrospectively evaluated 227 patients who underwent PD from 2015 to 2019. The patients were divided into three groups: underweight group (BMI <18.5 kg/m2), normal weight group (18.5 ≤ BMI <25 kg kg/m2), and overweight group (BMII ≥25 kg/m2). The association between different BMI groups and different perioperative results was discussed. Finally, the independent risk factors of clinically relevant-postoperative pancreatic fistula (CR-POPF) were analyzed by multivariate logistic regression. Results: The level of preoperative albumin was higher in patients of overweight group (P = .03). The incidence of hypertension increased gradually in the three BMI groups (P = . 039). The preoperative median CA19-9 level was significantly higher in the underweight group than that in the control groups (P = .001). The median operation time in the high BMI group was significantly longer than that in the other two groups. High BMI was an independent risk factor influencing CR-POPF after PD (P = .022, odds ratio 2.253, 95% confidence interval 1.123-4.518). Conclusions: Operation time of PD was increased in patients with high BMI. High BMI was an independent risk factor for the incidence of CR-POPF after PD. However, PD surgery is safe and feasible for patients with different BMI, and overweight and obese patients should not refuse PD surgery because of their BMI.
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Affiliation(s)
- Tianyu Tang
- Department of Hepatopancreatobiliary Surgery, the Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yuwei Tan
- Department of Hepatopancreatobiliary Surgery, People's Hospital of Deyang City, Deyang, China
| | - Bingkai Xiao
- Department of Hepatopancreatobiliary Surgery, the Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Guangchen Zu
- Department of Hepatopancreatobiliary Surgery, the Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yong An
- Department of Hepatopancreatobiliary Surgery, the Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yue Zhang
- Department of Hepatopancreatobiliary Surgery, the Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Weibo Chen
- Department of Hepatopancreatobiliary Surgery, the Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xuemin Chen
- Department of Hepatopancreatobiliary Surgery, the Third Affiliated Hospital of Soochow University, Changzhou, China
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Trends, Determinants, and Impact on Survival of Post-Lung Transplant Weight Changes: A Single-center Longitudinal Retrospective Study. Transplantation 2019; 103:2614-2623. [PMID: 31765365 DOI: 10.1097/tp.0000000000002696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Weight gain is commonly seen in lung transplant (LTx) recipients. Although previous studies have focused on weight changes at fixed time periods and relatively early after transplant, trends over time and long-term weight evolution have not been described in this population. The study objectives were to document weight changes up to 15 years post-LTx and assess the predictors of post-LTx weight changes and their associations with mortality. METHODS Retrospective cohort study of LTx recipients between January 1, 2000, and November 30, 2016 (n = 502). Absolute weight changes from transplant were calculated at fixed time periods (6 mo, 1, 2, 5, 10, and 15 y), and continuous trends over time were generated. Predictors of weight changes and their association with mortality were assessed using linear and Cox regression analysis. RESULTS LTx recipients experienced a gradual increase in weight, resulting from the combination of multiple weight trajectories. Interstitial lung disease diagnosis negatively predicted post-LTx weight changes at all time points, whereas transplant body mass index categories were significant predictors at earlier time points. Patients with a weight gain of >10% at 5 years had a better survival (hazard ratio [HR], 0.36; 95% confidence interval [CI], 0.20-0.66), whereas a 10% weight loss at earlier time points was associated with worse survival (1 y: HR, 2.04; 95% CI, 1.22-3.41 and 2 y: HR, 2.37; 95% CI, 1.22-4.58). CONCLUSIONS Post-LTx weight changes display various trajectories, are predicted to some extent by individual and LTx-related factors, and have a negative or positive impact on survival depending on the time post-LTx. These results may lead to a better individualization of weight management after transplant.
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13
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Shigemura N, Toyoda Y. Elderly patients with multiple comorbidities: insights from the bedside to the bench and programmatic directions for this new challenge in lung transplantation. Transpl Int 2019; 33:347-355. [DOI: 10.1111/tri.13533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 07/26/2019] [Accepted: 09/20/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Norihisa Shigemura
- Division of Cardiovascular Surgery Temple University Health System and Lewis Katz School of Medicine Philadelphia PA USA
| | - Yoshiya Toyoda
- Division of Cardiovascular Surgery Temple University Health System and Lewis Katz School of Medicine Philadelphia PA USA
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14
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Tawil JN, Adams BA, Nicoara A, Boisen ML. Noteworthy Literature Published in 2018 for Thoracic Organ Transplantation. Semin Cardiothorac Vasc Anesth 2019; 23:171-187. [PMID: 31064319 DOI: 10.1177/1089253219845408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Publications of note from 2018 are reviewed for the cardiothoracic transplant anesthesiologist. Strategies to expand the availability of donor organs were highlighted, including improved donor management, accumulating experience with increased-risk donors, ex vivo perfusion techniques, and donation after cardiac death. A number of reports examined posttransplant outcomes, including outcomes other than mortality, with new data-driven risk models. Use of extracorporeal support in cardiothoracic transplantation was a prominent theme. Major changes in adult heart allocation criteria were implemented, aiming to improve objectivity and transparency in the listing process. Frailty and prehabilitation emerged as targets of comprehensive perioperative risk mitigation programs.
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Affiliation(s)
| | | | | | - Michael L Boisen
- 4 University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Ardila-Gatas J, Sharma G, Nor Hanipah Z, Tu C, Brethauer SA, Aminian A, Tolle L, Schauer PR. Bariatric surgery in patients with interstitial lung disease. Surg Endosc 2018; 33:1952-1958. [PMID: 30367295 DOI: 10.1007/s00464-018-6475-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Accepted: 09/20/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Perioperative pulmonary complications are frequent in patients with interstitial lung diseases (ILD). Limited literature exists regarding the safety of bariatric procedures in patients with ILD. This study aims to assess the safety, feasibility, and outcomes of patients with ILD who underwent bariatric surgery at our institution. METHODS After IRB approval, all patients with preoperative diagnosis of ILD who had bariatric surgery at an academic center between 2004 and 2014 were retrospectively reviewed. RESULTS A total of 25 patients with ILD underwent bariatric surgery: Roux-en-Y gastric bypass (n = 17, 68%), sleeve gastrectomy (n = 7, 28%), and adjustable gastric banding (n = 1, 4%). Twenty-one patients (84%) were females. The median age and preoperative body mass index (BMI) were 53 (IQR 42-58) years and 39 (IQR 37-44) kg/m2, respectively. The median operative time and length of stay was 137 (IQR 110-187) min and 3 (IQR 2-5) days, respectively. The 30-day complications were reported in four patients (16%) but there was no pulmonary complication or unplanned admission to the intensive care unit. At 1-year follow-up (85%), the median BMI and excess weight loss were 30 (IQR 25-36) kg/m2 and 67% (IQR 45-100), respectively. Compared to preoperative values, there was significant improvement in the pulmonary function test (PFT) variables at 1 year with respect to forced vital capacity (62% vs 74%; n = 13, p = 0.003), and diffusing capacity of the lungs for carbon monoxide (53% vs 66%; n = 10, p = 0.003). Six out of the seven potential lung transplant candidates became eligible for transplantation after weight loss, and one of them had successful lung transplant at 88 months after bariatric surgery. CONCLUSION In our experience, bariatric patients with ILD achieved significant weight loss and improvement in PFT. Bariatric surgery in these higher risk ILD patients appears relatively safe with acceptable perioperative morbidity and improved candidacy for lung transplantation.
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Affiliation(s)
- Jessica Ardila-Gatas
- Department of General Surgery, Bariatric and Metabolic Institute, Cleveland Clinic, 9500 Euclid Ave/A100, Cleveland, OH, 44195, USA
| | - Gautam Sharma
- Department of General Surgery, Bariatric and Metabolic Institute, Cleveland Clinic, 9500 Euclid Ave/A100, Cleveland, OH, 44195, USA
| | - Zubaidah Nor Hanipah
- Department of General Surgery, Bariatric and Metabolic Institute, Cleveland Clinic, 9500 Euclid Ave/A100, Cleveland, OH, 44195, USA.,Department of Surgery, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Chao Tu
- Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Stacy A Brethauer
- Department of General Surgery, Bariatric and Metabolic Institute, Cleveland Clinic, 9500 Euclid Ave/A100, Cleveland, OH, 44195, USA
| | - Ali Aminian
- Department of General Surgery, Bariatric and Metabolic Institute, Cleveland Clinic, 9500 Euclid Ave/A100, Cleveland, OH, 44195, USA
| | - Leslie Tolle
- Department of Pulmonary Medicine and Critical Care Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Philip R Schauer
- Department of General Surgery, Bariatric and Metabolic Institute, Cleveland Clinic, 9500 Euclid Ave/A100, Cleveland, OH, 44195, USA.
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16
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Jomphe V, Lands LC, Mailhot G. Nutritional Requirements of Lung Transplant Recipients: Challenges and Considerations. Nutrients 2018; 10:E790. [PMID: 29921799 PMCID: PMC6024852 DOI: 10.3390/nu10060790] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 06/15/2018] [Indexed: 12/19/2022] Open
Abstract
An optimal nutritional status is associated with better post-transplant outcomes and survival. Post-lung transplant nutrition management is however particularly challenging as lung recipients represent a very heterogeneous group of patients in terms of age, underlying diseases, weight status and presence of comorbidities. Furthermore, the post-transplant period encompasses several stages characterized by physiological and pathophysiological changes that affect nutritional status of patients and necessitate tailored nutrition management. We provide an overview of the current state of knowledge regarding nutritional requirements in the post-lung transplant period from the immediate post-operative phase to long-term follow-up. In the immediate post-transplantation phase, the high doses of immunosuppressants and corticosteroids, the goal of maintaining hemodynamic stability, the presence of a catabolic state, and the wound healing process increase nutritional demands and lead to metabolic perturbations that necessitate nutritional interventions. As time from transplantation increases, complications such as obesity, osteoporosis, cancer, diabetes, and kidney disease, may develop and require adjustments to nutrition management. Until specific nutritional guidelines for lung recipients are elaborated, recommendations regarding nutrient requirements are formulated to provide guidance for clinicians caring for these patients. Finally, the management of recipients with special considerations is also briefly addressed.
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Affiliation(s)
- Valerie Jomphe
- Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, 900 Saint-Denis Street, Montreal, QC H2X 0A9, Canada.
| | - Larry C Lands
- Lung Transplant Program, Centre Hospitalier de l'Université de Montréal, 900 Saint-Denis Street, Montreal, QC H2X 0A9, Canada.
- Department of Pediatrics, Montreal Children's Hospital-McGill University Health Centre, 1001 Décarie Boulevard, Montreal, QC H4A 3J1, Canada.
- Meakins Christie Laboratories, Research Institute of the McGill University Health Centre, 1001 Décarie Boulevard, Montreal, QC H4A 3J1, Canada.
| | - Genevieve Mailhot
- Department of Nutrition, Faculty of Medicine, Université de Montreal, 2405 Cote Sainte-Catherine Rd., Montreal, QC H3T 1A8, Canada.
- Research Centre, CHU Sainte-Justine, 3175 Cote Sainte-Catherine Rd., Montreal, QC H3T 1C5, Canada.
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Weatherald J, Huertas A, Boucly A, Guignabert C, Taniguchi Y, Adir Y, Jevnikar M, Savale L, Jaïs X, Peng M, Simonneau G, Montani D, Humbert M, Sitbon O. Association Between BMI and Obesity With Survival in Pulmonary Arterial Hypertension. Chest 2018; 154:872-881. [PMID: 29800550 DOI: 10.1016/j.chest.2018.05.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 03/30/2018] [Accepted: 05/01/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND An obesity paradox, wherein patients who are obese have lower mortality, has been described in cardiopulmonary diseases, including pulmonary arterial hypertension (PAH). Our objective was to determine whether obesity and BMI are associated with mortality in patients with PAH. METHODS We assessed incident patients with idiopathic, drug-induced, and heritable PAH from the French Pulmonary Hypertension Network registry. Cox regression and Kaplan-Meier analysis were used to assess the association between BMI and obesity with all-cause mortality. RESULTS Of 1,255 patients included, 30% were obese. A higher proportion of women (65.1% vs 53.4%, P < .01), drug-induced PAH (28.9% vs 9.2%, P < .01), systemic hypertension, diabetes, and hypothyroidism were present in the obese group. More obese patients were in New York Heart Association class III (66.4% vs 57.1%), fewer were class IV (11.8% vs 16.9%, P < .01), and 6-min walk distance was lower (276 ± 121 vs 324 ± 146, P < .01). Right atrial pressure, pulmonary wedge pressure, and cardiac index were higher, whereas pulmonary vascular resistance was lower in patients who were obese. Neither BMI (hazard ratio [HR], 0.99; 95% CI, 0.97-1.01; P = .41) nor obesity (HR, 1.0; 95% CI, 0.99-1.01; P = .46) were associated with mortality in multivariable analyses. There was a significant interaction between age and obesity such that mortality increased among patients < 65 years of age who were morbidly obese (HR, 3.01; 95% CI, 1.56-5.79; P = .001). CONCLUSIONS Obesity was not associated with mortality in the overall population, but there was an age-obesity interaction with increased mortality among young patients who were morbidly obese. These results have implications for active weight management in younger patients who are morbidly obese who are otherwise candidates for lung transplantation.
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Affiliation(s)
- Jason Weatherald
- Department of Medicine, Division of Respirology, University of Calgary, Calgary, AB, Canada; Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France; Libin Cardiovascular Institute of Alberta, Calgary, AB, Canada.
| | - Alice Huertas
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Athénaïs Boucly
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Christophe Guignabert
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Yu Taniguchi
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Yochai Adir
- Lady Davis Carmel Medical Center, Pulmonary Division, Faculty of Medicine, Technion Institute of Technology, Haifa, Israel
| | - Mitja Jevnikar
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Laurent Savale
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Xavier Jaïs
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Mingkai Peng
- Libin Cardiovascular Institute of Alberta, Calgary, AB, Canada; Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - Gérald Simonneau
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - David Montani
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Marc Humbert
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Olivier Sitbon
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France; Service de Pneumologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France; INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis Robinson, France
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18
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Del Rio JM, Maerz D, Subramaniam K. Noteworthy Literature Published in 2017 for Thoracic Transplantation Anesthesiologists. Semin Cardiothorac Vasc Anesth 2018; 22:49-66. [DOI: 10.1177/1089253217749893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Thoracic organ transplantation constitutes a significant proportion of all transplant procedures. Thoracic solid organ transplantation continues to be a burgeoning field of research. This article presents a review of remarkable literature published in 2017 regarding perioperative issues pertinent to the thoracic transplant anesthesiologists.
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Affiliation(s)
- J. Mauricio Del Rio
- Duke University, Durham, NC, USA
- Duke University Medical Center, Durham, NC, USA
| | - David Maerz
- University of Pittsburgh, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Kathirvel Subramaniam
- University of Pittsburgh, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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