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1.
Ann Surg Oncol ; 2024 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-38653941

RESUMO

BACKGROUND: Surgical site infections (SSIs) are a common cause of morbidity after cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) for peritoneal malignancy. Negative pressure wound therapy (NPWT) has been proposed as a method to reduce the rates of SSIs; however, there is paucity in the literature on the efficacy in this population. The goal of this study was to determine whether routine use of NPWT in patients undergoing CRS/HIPEC could reduce the risk of developing SSI. METHODS: We performed a retrospective before-after study to assess the rates of SSI with NPWT compared with a standard postoperative surgical dressing (SSD) in all patients undergoing CRS/HIPEC from November 2013 to December 2021 at a single tertiary care center. The primary outcome was rate of SSI. A multivariate logistic regression analysis was performed to evaluate for risk factors for SSI. RESULTS: A total of 178 patients were treated with CRS/HIPEC over the study period. Seventy patients had placement of SSD, and 108 patients had placement of NPWT. Rates of SSI were 11.4% (8/70) and 5.6% (6/108) in the two groups, respectively (p = 0.16). On multivariate analysis, patients treated with NPWT had a significantly lower risk of developing an SSI (OR 0.24 [0.06, 0.92], p = 0.037). Patients living >50 km from the hospital had significantly higher risk of developing SSI (OR 2.03 [1.09, 3.78], p = 0.026). CONCLUSIONS: These results suggest that routine use of NPWT can reduce the risk of developing an SSI in patients undergoing CRS/HIPEC for peritoneal malignancy.

2.
BMJ Open Qual ; 12(3)2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37402596

RESUMO

OBJECTIVE: To characterise the extent of unnecessary care in general surgery inpatients using a triple bottom line approach. DESIGN: Patients with uncomplicated acute surgical conditions were retrospectively evaluated for unnecessary bloodwork according to the triple bottom line, quantifying the impacts on patients, healthcare costs and greenhouse gas emissions. The carbon footprint of common laboratory investigations was estimated using PAS2050 methodology, including emissions generated from the production, transport, processing and disposal of consumable goods and reagents. SETTING: Single-centre tertiary care hospital. PARTICIPANTS: Patients admitted with acute uncomplicated appendicitis, cholecystitis, choledocholithiasis, gallstone pancreatitis and adhesive small bowel obstruction were included in the study. 304 patients met inclusion criteria and 83 were randomly selected for in-depth chart review. MAIN OUTCOME MEASURES: In each patient population, the extent of over-investigation was determined by comparing ordered laboratory investigations against previously developed consensus recommendations. The quantity of unnecessary bloodwork was measured by number of phlebotomies, tests and blood volume in addition to healthcare costs and greenhouse gas emissions. RESULTS: 76% (63/83) of evaluated patients underwent unnecessary bloodwork resulting in a mean of 1.84 phlebotomies, 4.4 blood vials, 16.5 tests and 18 mL of blood loss per patient. The hospital and environmental cost of these unnecessary activities was $C5235 and 61 kg CO2e (974 g CO2e per person), respectively. The carbon footprint of a common set of investigations (complete blood count, differential, creatinine, urea, sodium, potassium) was 332 g CO2e. Adding a liver panel (liver enzymes, bilirubin, albumin, international normalised ratio/partial thromboplastin time) resulted in an additional 462 g CO2e. CONCLUSIONS: We found considerable overuse of laboratory investigations among general surgery patients admitted with uncomplicated acute surgical conditions resulting in unnecessary burden to patients, hospitals and the environment. This study identifies an opportunity for resource stewardship and exemplifies a comprehensive approach to quality improvement.


Assuntos
Gases de Efeito Estufa , Humanos , Estudos Retrospectivos , Pegada de Carbono , Hospitalização , Hospitais
3.
Lancet Planet Health ; 7(3): e251-e264, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36889866

RESUMO

Accelerating the decarbonisation of local and national economies is a profound public health imperative. As trusted voices within communities around the world, health professionals and health organisations have enormous potential to influence the social and policy landscape in support of decarbonisation. We assembled a multidisciplinary, gender-balanced group of experts from six continents to develop a framework for maximising the social and policy influence of the health community on decarbonisation at the micro levels, meso levels, and macro levels of society. We identify practical, learning-by-doing approaches and networks to implement this strategic framework. Collectively, the actions of health-care workers can shift practice, finance, and power in ways that can transform the public narrative and influence investment, activate socioeconomic tipping points, and catalyse the rapid decarbonisation needed to protect health and health systems.


Assuntos
Pessoal de Saúde , Saúde Pública , Humanos , Políticas
4.
Annu Rev Public Health ; 44: 255-277, 2023 04 03.
Artigo em Inglês | MEDLINE | ID: mdl-36626833

RESUMO

Climate change is a threat multiplier, exacerbating underlying vulnerabilities, worsening human health, and disrupting health systems' abilities to deliver high-quality continuous care. This review synthesizes the evidence of what the health care sector can do to adapt to a changing climate while reducing its own climate impact, identifies barriers to change, and makes recommendations to achieve sustainable, resilient health care systems.


Assuntos
Mudança Climática , Atenção à Saúde , Humanos
5.
J Gastrointest Surg ; 26(10): 2176-2183, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35852704

RESUMO

BACKGROUND: Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) for peritoneal malignancies carries considerable morbidity; however, the significance of postoperative small bowel obstruction (SBO) is not well defined. We aim to identify predictors for post-CRS/HIPEC SBO and their oncologic associations. METHODS: A retrospective review was conducted of all CRS/HIPEC cases performed at a surgical oncology center (2013-2018). Patient demographics, tumor characteristics, perioperative factors, and province-wide hospital readmissions were analyzed. Descriptive statistics were used for baseline characteristics, multivariate logistic regression for predictors of SBO at 1 year, and Kaplan-Meier method with log-rank test for survival analysis. RESULTS: A total of n = 97 CRS/HIPEC procedures were performed for diagnoses of low-grade appendiceal mucinous neoplasm (44%), high-grade appendiceal adenocarcinoma (8%), colorectal adenocarcinoma (34%), and mesothelioma (9%). The median peritoneal carcinomatosis index (PCI) score was 16. Cumulative incidence of post-CRS/HIPEC SBO readmission was 24% at 1 year and 38% at 2 and 3 years. Of 29 patients readmitted with SBO, 14 (48%) had more than one readmission for SBO, and nine surgeries were performed for obstruction. Multivariate regression identified significant independent predictors of SBO within 1-year post-CRS/HIPEC as high-grade appendiceal or colorectal primaries (odds ratio [OR] 4.58, p = 0.02) and PCI ≥ 20 (OR 3.27, p = 0.05). Overall survival (OS) was worse in patients readmitted with SBO within 1 year compared to those without (3-year OS 58% vs. 75%, p = 0.017). CONCLUSION: SBO is the most common readmission diagnosis post-CRS/HIPEC and is associated with worse survival. High-grade appendiceal and colorectal primary tumors and PCI ≥ 20 are predictors for SBO.


Assuntos
Adenocarcinoma , Neoplasias do Apêndice , Neoplasias Colorretais , Hipertermia Induzida , Obstrução Intestinal , Adenocarcinoma/patologia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/patologia , Terapia Combinada , Procedimentos Cirúrgicos de Citorredução/efeitos adversos , Humanos , Hipertermia Induzida/efeitos adversos , Quimioterapia Intraperitoneal Hipertérmica , Obstrução Intestinal/etiologia , Obstrução Intestinal/terapia , Estudos Retrospectivos , Taxa de Sobrevida
6.
Curr Oncol ; 29(2): 1279-1297, 2022 02 21.
Artigo em Inglês | MEDLINE | ID: mdl-35200608

RESUMO

Malignant gastrointestinal neuroectodermal tumor (GNET) is an ultra-rare soft tissue sarcoma, therefore often misdiagnosed and has no available standard treatment. Here, we report 3 cases of metastatic GNET with variable clinical courses. Our small case series as well as extensive literature review, further support that GNET is a spectrum of diseases with variable inherent biology and prognosis. Surgical management in the setting of recurrent/metastatic disease may be appropriate for GNET with indolent nature. Response to systemic treatments including chemotherapy and targeted treatments is variable, likely related to heterogenous biology as well. Furthermore, we retrospectively identified 20 additional GNET cases from Foundation Medicine's genomic database and expanded on their clinicopathological and genomic features. Comprehensive genomic profiling (CGP) with DNA and RNA sequencing of this cohort, in the course of clinical care, demonstrated recurrent EWSR1 chromosomal rearrangements and a sparsity of additional recurrent or driver genomic alterations. All cases had low tumor mutational burden (TMB) and were microsatellite stable.


Assuntos
Neoplasias Gastrointestinais , Tumores Neuroectodérmicos , Sarcoma de Células Claras , Neoplasias Gastrointestinais/genética , Genômica , Humanos , Tumores Neuroectodérmicos/diagnóstico , Tumores Neuroectodérmicos/genética , Tumores Neuroectodérmicos/patologia , Estudos Retrospectivos , Sarcoma de Células Claras/diagnóstico , Sarcoma de Células Claras/patologia
8.
Int J Cancer ; 149(9): 1691-1704, 2021 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-34213775

RESUMO

Malignant sarcomas are rare accounting for <1% of all adult solid malignancies and approximately 11% to 13% of all pediatric malignancies. TRK-inhibitors have demonstrated robust and long-lasting responses in patients with NTRK fusion-positive solid tumors, including sarcoma. Access to these agents in many jurisdictions such as Canada remains limited. We undertook a modified Delphi consensus to articulate and convey the clinical importance of these agents for the Canadian sarcoma community. A systematic search of published and presented literature was conducted to identify clinical trials reporting outcomes on the use of TRK-inhibitors in relapsed/refractory NTRK fusion-positive sarcoma. Three main consensus questions were identified: (a) is there currently an unmet clinical need for systemic therapy options in relapsed/refractory sarcoma? (b) do TRK-inhibitors confer a clinical benefit to patients with NTRK fusion-positive sarcoma? (c) do phase I/II basket trials provide sufficient evidence to justify funding of TRK-inhibitors in NTRK fusion-positive sarcoma? Response rates to the first and second surveys were 57% (n = 30) and 42% (n = 22), respectively. There was strong agreement among the Canadian sarcoma community that there was unmet clinical need for effective systemic therapy options in relapsed/refractory sarcoma, that TRK-inhibitors are a safe and effective treatment option for patients with NTRK fusion-positive sarcoma, and that available phase I/II basket trials provide sufficient evidence to support funding of these agents in relapsed/refractory NTRK fusion-positive sarcoma. TRK-inhibitors are a safe and effective systemic therapy option for patients with relapsed/refractory NTRK fusion-positive sarcoma.


Assuntos
Proteínas de Fusão Oncogênica/metabolismo , Inibidores de Proteínas Quinases/uso terapêutico , Receptor trkA/metabolismo , Receptor trkC/antagonistas & inibidores , Sarcoma/tratamento farmacológico , Inquéritos e Questionários/estatística & dados numéricos , Adolescente , Adulto , Idoso , Canadá , Consenso , Progressão da Doença , Humanos , Pessoa de Meia-Idade , Proteínas de Fusão Oncogênica/genética , Receptor trkA/genética , Receptor trkC/genética , Receptor trkC/metabolismo , Sarcoma/genética , Sarcoma/metabolismo , Análise de Sobrevida , Adulto Jovem
9.
Can Med Educ J ; 12(3): 8-18, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34249187

RESUMO

BACKGROUND: In light of the global climate emergency, it is worth reconsidering the current practice of medical students traveling to interview for residency positions. We sought to estimate carbon dioxide (CO2) emissions associated with travel for general surgery residency interviews in Canada, and the potential avoided emissions if interviews were restructured. METHODS: An eight-item survey was constructed to collect data on cities visited, travel modalities, and costs incurred. Applicants to the University of Ottawa General Surgery Program during the 2019/20 Canadian Resident Matching Service (CaRMS) cycle were invited to complete the survey. Potential reductions in CO2 emissions were modeled using a regionalized interview process with either one or two cities. RESULTS: Of a total of 56 applicants, 39 (70%) completed the survey. Applicants on average visited 10 cities with a mean total cost of $4,866 (95% CI=3,995-5,737) per applicant. Mean CO2 emissions were 1.82 (95% CI=1.50-2.14) tonnes per applicant, and the total CO2 emissions by applicants was estimated to be 101.9 (95% CI=84.0 - 119.8) tonnes. In models wherein interviews are regionalized to one or two cities, emissions would be 57.9 tonnes (43.2% reduction) and 84.2 tonnes (17.4% reduction), respectively. Overall, 74.4% of respondents were concerned about the environmental impact of travel and 46% would prefer to interview by videoconference. CONCLUSION: Travel for general surgery residency interviews in Canada is associated with a considerable environmental impact. These findings are likely generalizable to other residency programs. Given the global climate crisis, the CaRMS application process must consider alternative structures.


CONTEXTE: Compte tenu de la situation d'urgence climatique mondiale, il convient de reconsidérer l'usage actuel selon lequel les étudiants en médecine se déplacent pour se présenter aux entrevues en vue d'obtenir un poste de résidence. Nous avons tenté d'estimer les émissions de dioxyde de carbone (CO2) causées par les déplacements pour les entretiens de résidence en chirurgie générale au Canada, et les émissions potentielles évitées si les entretiens étaient organisés autrement. MÉTHODES: Un sondage comportant huit questions a été élaboré pour recueillir les données sur les villes visitées, les modalités de voyage et les coûts encourus. Les candidats au programme de chirurgie générale de l'Université d'Ottawa au cours du cycle 2019/20 du Service canadien de jumelage des résidents (CaRMS) ont été invités à y répondre. Les réductions potentielles des émissions de CO2 ont été modélisées à l'aide d'un processus d'entrevue régionalisé avec une ou deux villes. RÉSULTATS: Sur un total de 56 candidats, 39 (70 %) ont répondu au sondage. Les candidats ont visité en moyenne 10 villes, pour un coût total moyen de 4 866 dollars (IC 95 % = 3 995-5 737) par candidat. Les émissions moyennes de CO2 étaient de 1,82 (IC 95 % = 1,50-2,14) tonne par candidat, et le total des émissions de CO2 pour l'ensemble des candidats était estimé à 101,9 (IC 95 % = 84,0 - 119,8) tonnes. D'après les modèles où les entrevues sont régionalisées avec une ou deux villes, les émissions seraient respectivement de 57,9 tonnes (43,2 % de réduction) et 84,2 tonnes (17,4 % de réduction). Dans l'ensemble, 74,4 % des personnes interrogées se disent préoccupées par l'impact environnemental des déplacements et 46 % préféreraient que l'entretien se fasse par vidéoconférence. CONCLUSION: Les déplacements pour les entrevues de résidence en chirurgie générale au Canada ont un impact environnemental considérable. Ces conclusions sont probablement généralisables à d'autres programmes de résidence. Compte tenu de la crise climatique mondiale, il conviendrait d'envisager d'autres modalités d'organisation des entrevues pour le processus de candidatures du CaRMS.

11.
Health Aff (Millwood) ; 39(12): 2088-2097, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33284689

RESUMO

A circular economy involves maintaining manufactured products in circulation, distributing resource and environmental costs over time and with repeated use. In a linear supply chain, manufactured products are used once and discarded. In high-income nations, health care systems increasingly rely on linear supply chains composed of single-use disposable medical devices. This has resulted in increased health care expenditures and health care-generated waste and pollution, with associated public health damage. It has also caused the supply chain to be vulnerable to disruption and demand fluctuations. Transformation of the medical device industry to a more circular economy would advance the goal of providing increasingly complex care in a low-emissions future. Barriers to circularity include perceptions regarding infection prevention, behaviors of device consumers and manufacturers, and regulatory structures that encourage the proliferation of disposable medical devices. Complementary policy- and market-driven solutions are needed to encourage systemic transformation.


Assuntos
Renda , Indústrias , Humanos , Saúde Pública
12.
Ann Surg Oncol ; 26(4): 1110-1117, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30690682

RESUMO

BACKGROUND: Cost-effectiveness evaluations of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) for the treatment of peritoneal carcinomatosis (PC) from metastatic colorectal cancer (mCRC) in the United States are lacking. METHODS: The authors developed a Markov model to evaluate the cost-effectiveness of CRS/HIPEC compared with systemic chemotherapy for isolated PC from mCRC from a societal perspective in the United States. The systemic treatment regimens consisted of FOLFOX, FOLFIRI, bevacizumab, cetuximab, and pantitumumab. The model inputs including costs, probabilities, survival, progression, and utilities were taken from the literature. The cycle length for the model was 2 weeks, and the time horizon was 7 years. A discount rate of 3% was applied. The model was tested for internal and external validation, and robustness was established with univariate sensitivity and probabilistic sensitivity analyses (PSA). The primary outcomes were total costs, quality-adjusted life-years (QALYs), life-years (LYs), and incremental cost-effectiveness ratio (ICER). A willingness-to-pay (WTP) threshold of $100,000 per QALY was assumed. RESULTS: The ICER for treatment with CRS/HIPEC compared with systemic chemotherapy was $91,034 per QALY gained ($74,098 per LY gained). The univariate sensitivity analysis showed that the total costs for treatment with CRS/HIPEC had the largest effect on the calculated ICER. The CRS/HIPEC treatment was a cost-effective strategy during the majority of simulations in the PSA. The average ICER for 100,000 simulations in the PSA was $70,807 per QALY gained. The likelihood of CRS/HIPEC being a cost-effective strategy at the WTP threshold was 87%. CONCLUSIONS: The CRS/HIPEC procedure is a cost-effective treatment for isolated PC from mCRC in the United States.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/economia , Quimioterapia do Câncer por Perfusão Regional/economia , Neoplasias Colorretais/economia , Procedimentos Cirúrgicos de Citorredução/economia , Hipertermia Induzida/economia , Neoplasias Peritoneais/economia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimioterapia do Câncer por Perfusão Regional/métodos , Neoplasias Colorretais/patologia , Neoplasias Colorretais/terapia , Terapia Combinada , Procedimentos Cirúrgicos de Citorredução/métodos , Humanos , Hipertermia Induzida/métodos , Cadeias de Markov , Metanálise como Assunto , Neoplasias Peritoneais/secundário , Neoplasias Peritoneais/terapia , Prognóstico , Taxa de Sobrevida
13.
PLoS Med ; 15(7): e1002623, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-30063712

RESUMO

BACKGROUND: Human health is dependent upon environmental health. Air pollution is a leading cause of morbidity and mortality globally, and climate change has been identified as the single greatest public health threat of the 21st century. As a large, resource-intensive sector of the Canadian economy, healthcare itself contributes to pollutant emissions, both directly from facility and vehicle emissions and indirectly through the purchase of emissions-intensive goods and services. Together these are termed life cycle emissions. Here, we estimate the extent of healthcare-associated life cycle emissions as well as the public health damages they cause. METHODS AND FINDINGS: We use a linked economic-environmental-epidemiological modeling framework to quantify pollutant emissions and their implications for public health, based on Canadian national healthcare expenditures over the period 2009-2015. Expenditures gathered by the Canadian Institute for Health Information (CIHI) are matched to sectors in a national environmentally extended input-output (EEIO) model to estimate emissions of greenhouse gases (GHGs) and >300 other pollutants. Damages to human health are then calculated using the IMPACT2002+ life cycle impact assessment model, considering uncertainty in the damage factors used. On a life cycle basis, Canada's healthcare system was responsible for 33 million tonnes of carbon dioxide equivalents (CO2e), or 4.6% of the national total, as well as >200,000 tonnes of other pollutants. We link these emissions to a median estimate of 23,000 disability-adjusted life years (DALYs) lost annually from direct exposures to hazardous pollutants and from environmental changes caused by pollution, with an uncertainty range of 4,500-610,000 DALYs lost annually. A limitation of this national-level study is the use of aggregated data and multiple modeling steps to link healthcare expenditures to emissions to health damages. While informative on a national level, the applicability of these findings to guide decision-making at individual institutions is limited. Uncertainties related to national economic and environmental accounts, model representativeness, and classification of healthcare expenditures are discussed. CONCLUSIONS: Our results for GHG emissions corroborate similar estimates for the United Kingdom, Australia, and the United States, with emissions from hospitals and pharmaceuticals being the most significant expenditure categories. Non-GHG emissions are responsible for the majority of health damages, predominantly related to particulate matter (PM). This work can guide efforts by Canadian healthcare professionals toward more sustainable practices.


Assuntos
Poluentes Atmosféricos/efeitos adversos , Poluição do Ar/efeitos adversos , Atenção à Saúde , Efeito Estufa , Gases de Efeito Estufa/efeitos adversos , Setor de Assistência à Saúde , Canadá/epidemiologia , Avaliação da Deficiência , Exposição Ambiental/efeitos adversos , Monitoramento Ambiental , Setor de Assistência à Saúde/economia , Gastos em Saúde , Humanos , Medição de Risco , Fatores de Risco , Desenvolvimento Sustentável , Fatores de Tempo
14.
J Surg Oncol ; 117(1): 56-61, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29314041

RESUMO

Resection of retroperitoneal sarcoma (RPS) typically involves multivisceral resection. The morbidity of RPS resection has decreased over time despite widespread adoption of radical resection. Certain patterns of resection are associated with higher complication rates and elderly patients are at increased risk of morbidity. Administration of preoperative radiotherapy does not increase morbidity, but intraoperative and brachytherapy techniques are associated with heightened toxicities. Long-term functional outcomes and quality of life scores after RPS resection are acceptable.


Assuntos
Qualidade de Vida , Neoplasias Retroperitoneais/epidemiologia , Neoplasias Retroperitoneais/cirurgia , Sarcoma/epidemiologia , Sarcoma/cirurgia , Humanos , Morbidade , Neoplasias Retroperitoneais/patologia , Sarcoma/patologia
15.
Ann Surg ; 267(5): 959-964, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-28394870

RESUMO

OBJECTIVE: To investigate the safety of radical resection for retroperitoneal sarcoma (RPS). BACKGROUND: The surgical management of RPS frequently involves complex multivisceral resection. Improved oncologic outcomes have been demonstrated with this approach compared to marginal excision, but the safety of radical resection has not been shown in a large study population. METHODS: The Transatlantic Retroperitoneal Sarcoma Working Group (TARPSWG) is an international collaborative of sarcoma centers. A combined experience of 1007 consecutive resections for primary RPS from January 2002 to December 2011 was studied retrospectively with respect to adverse events. A weighted organ score was devised to account for differences in surgical complexity. Univariate and multivariate logistic regression analyses were performed to investigate associations between adverse events and number and patterns of organs resected. Associations between adverse events and overall survival, local recurrence, and distant metastases were investigated. RESULTS: Severe postoperative adverse events (Clavien-Dindo ≥3) occurred in 165 patients (16.4%) and 18 patients (1.8%) died within 30 days. Significant predictors of severe adverse events were age (P = 0.003), transfusion requirements (P < 0.001), and resected organ score (P = 0.042). Resections involving pancreaticoduodenectomy, major vascular resection, and splenectomy/pancreatectomy were found to entail higher operative risk (odds ratio >1.5). There was no impact of postoperative adverse events on overall survival, local recurrence, or distant metastases. CONCLUSIONS: A radical surgical approach to RPS is safe when carried out at a specialist sarcoma center. High-risk resections should be carefully considered on an individual basis and weighed against anticipated disease biology. There appears to be no association between surgical morbidity and long-term oncologic outcomes.


Assuntos
Margens de Excisão , Pancreaticoduodenectomia , Neoplasias Retroperitoneais/cirurgia , Sarcoma/cirurgia , Esplenectomia , Idoso , Canadá/epidemiologia , Europa (Continente)/epidemiologia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Morbidade/tendências , Período Pós-Operatório , Neoplasias Retroperitoneais/epidemiologia , Estudos Retrospectivos , Sarcoma/epidemiologia , Taxa de Sobrevida/tendências , Estados Unidos/epidemiologia
16.
Surg Oncol Clin N Am ; 26(4): 531-544, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28923218

RESUMO

Soft tissue sarcoma (STS) is a family of malignancies for which individual management decisions can be complex. There is a paucity of level 1 evidence, as the rarity and heterogeneity of STS pose challenges to the design and execution of randomized controlled trials. Radiotherapy (RT) is routinely used to facilitate function-preserving surgery and to improve local control. Delivery of RT in the preoperative setting can decrease chronic toxicities at the cost of increased wound complications in the short-term. The role of adjuvant systemic therapies remains controversial in adult STS.


Assuntos
Ensaios Clínicos Controlados Aleatórios como Assunto , Sarcoma/radioterapia , Sarcoma/cirurgia , Adulto , Terapia Combinada , Humanos , Radioterapia Adjuvante , Fatores de Tempo , Resultado do Tratamento
17.
Cancer ; 123(11): 1971-1978, 2017 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-28152173

RESUMO

BACKGROUND: Despite a radical surgical approach to primary retroperitoneal sarcoma (RPS), many patients experience locoregional and/or distant recurrence. The objective of this study was to analyze post-relapse outcomes for patients with RPS who had initially undergone surgical resection of their primary tumor at a specialist center. METHODS: All consecutive patients who underwent macroscopically complete resection for primary RPS at 8 high volume centers from January 2002 to December 2011 were identified, and those who developed local recurrence (LR) only, distant metastasis (DM) only, or synchronous local recurrence and distant metastasis (LR+DM) during the follow-up period were included. Overall survival (OS) was calculated for all groups, as was the crude cumulative incidence of a second recurrence after the first LR. Multivariate analyses for OS were performed. RESULTS: In an initial series of 1007 patients with primary RPS, 408 patients developed recurrent disease during the follow-up period. The median follow-up from the time of recurrence was 41 months. The median OS was 33 months after LR (n = 219), 25 months after DM (n = 146), and 12 months after LR+DM (n = 43), and the 5-year OS rates were 29%, 20%, and 14%, respectively. Predictors of OS after LR were the time interval to LR and resection of LR, while histologic grade approached significance. For DM, significant predictors of OS were the time interval to DM and histologic subtype. The subgroup of patients who underwent resection of recurrent disease had a longer median OS than patients who did not undergo resection. CONCLUSIONS: Relapse of RPS portends high disease-specific mortality. Patients with locally recurrent or metastatic disease should be considered for resection. Cancer 2017;123:1971-1978. © 2017 American Cancer Society.


Assuntos
Antineoplásicos/uso terapêutico , Leiomiossarcoma/cirurgia , Lipossarcoma/cirurgia , Recidiva Local de Neoplasia/terapia , Radioterapia , Neoplasias Retroperitoneais/cirurgia , Tumores Fibrosos Solitários/cirurgia , Idoso , Feminino , Humanos , Leiomiossarcoma/mortalidade , Leiomiossarcoma/patologia , Lipossarcoma/mortalidade , Lipossarcoma/patologia , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Metástase Neoplásica , Recidiva Local de Neoplasia/mortalidade , Neoplasias Retroperitoneais/mortalidade , Neoplasias Retroperitoneais/patologia , Estudos Retrospectivos , Sarcoma/mortalidade , Sarcoma/patologia , Sarcoma/cirurgia , Tumores Fibrosos Solitários/mortalidade , Tumores Fibrosos Solitários/patologia , Taxa de Sobrevida
18.
Lancet Planet Health ; 1(9): e381-e388, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29851650

RESUMO

BACKGROUND: Climate change is a major global public health priority. The delivery of health-care services generates considerable greenhouse gas emissions. Operating theatres are a resource-intensive subsector of health care, with high energy demands, consumable throughput, and waste volumes. The environmental impacts of these activities are generally accepted as necessary for the provision of quality care, but have not been examined in detail. In this study, we estimate the carbon footprint of operating theatres in hospitals in three health systems. METHODS: Surgical suites at three academic quaternary-care hospitals were studied over a 1-year period in Canada (Vancouver General Hospital, VGH), the USA (University of Minnesota Medical Center, UMMC), and the UK (John Radcliffe Hospital, JRH). Greenhouse gas emissions were estimated using primary activity data and applicable emissions factors, and reported according to the Greenhouse Gas Protocol. FINDINGS: Site greenhouse gas evaluations were done between Jan 1 and Dec 31, 2011. The surgical suites studied were found to have annual carbon footprints of 5 187 936 kg of CO2 equivalents (CO2e) at JRH, 4 181 864 kg of CO2e at UMMC, and 3 218 907 kg of CO2e at VGH. On a per unit area basis, JRH had the lowest carbon intensity at 1702 kg CO2e/m2, compared with 1951 kg CO2e/m2 at VGH and 2284 kg CO2e/m2 at UMMC. Based on case volumes at all three sites, VGH had the lowest carbon intensity per operation at 146 kg CO2e per case compared with 173 kg CO2e per case at JRH and 232 kg CO2e per case at UMMC. Anaesthetic gases and energy consumption were the largest sources of greenhouse gas emissions. Preferential use of desflurane resulted in a ten-fold difference in anaesthetic gas emissions between hospitals. Theatres were found to be three to six times more energy-intense than the hospital as a whole, primarily due to heating, ventilation, and air conditioning requirements. Overall, the carbon footprint of surgery in the three countries studied is estimated to be 9·7 million tonnes of CO2e per year. INTERPRETATION: Operating theatres are an appreciable source of greenhouse gas emissions. Emissions reduction strategies including avoidance of desflurane and occupancy-based ventilation have the potential to lessen the climate impact of surgical services without compromising patient safety. FUNDING: None.

19.
Ann Hepatol ; 9(1): 23-32, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20308719

RESUMO

OBJECTIVE: To evaluate the survival benefit of multimodal therapy for the treatment of HCC. BACKGROUND: Orthotopic liver transplantation (OLT) is considered the treatment of choice for selected patients with hepatocellular carcinoma (HCC). However, donor organ shortages and patients whose HCCs exceed OLT criteria require consideration of alternate therapeutic options such as hepatic resection, radiofrequency ablation (RFA), ethanol injection (EI), transarterial chemoembolization (TACE), and chemotherapy (CTX). This study was performed to evaluate the survival benefit of multimodal therapy for treatment of HCC as complementary therapy to OLT. METHODS: A retrospective review was conducted of HCC patients undergoing therapy following multidisciplinary review at our institution from 1996 . 2006 with a minimum of a 2 year patient follow-up. Data were available on 247/252 patients evaluated. Relevant factors at time of diagnosis included symptoms, hepatitis B (HBV) and C (HCV) status, antiviral therapy, Child-Pugh classification, portal vein patency, and TNM staging. Patients underwent primary treatment by hepatic resection, RFA, EI, TACE, CTX, or were observed (best medical management). Patients with persistent or recurrent disease following initial therapy were assessed for salvage therapy. Survival curves and pairwise multiple comparisons were calculated using standard statistical methods. RESULTS: Mean overall survival was 76.8 months. Pairwise comparisons revealed significant mean survival benefits with hepatic resection (93.2 months), RFA (66.2 months), and EI (81.1 months), compared with TACE (47.4 months), CTX (24.9 months), or observation (31.4 months). Shorter survival was associated with symptoms, portal vein thrombus, or Child-Pugh class B or C. HCV infection was associated with significantly shorter survival compared with HBV infection. Antiviral therapy was associated with significantly improved survival in chronic HBV and HCV patients only with earlier stage disease. CONCLUSION: Multimodal therapy is effective therapy for HCC and may be used as complementary treatment to OLT.


Assuntos
Carcinoma Hepatocelular/terapia , Terapias Complementares , Neoplasias Hepáticas/terapia , Transplante de Fígado , Idoso , Carcinoma Hepatocelular/mortalidade , Ablação por Cateter , Quimioembolização Terapêutica , Terapia Combinada , Tratamento Farmacológico , Etanol/administração & dosagem , Feminino , Hepatectomia , Humanos , Injeções , Neoplasias Hepáticas/mortalidade , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
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