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ABSTRACT: This forum summarizes the proceedings of the joint European Surgical Association (ESA)/American Surgical Association (ASA) symposium on Quality and Outcome Assessment for Surgery that took place in Bordeaux, France, as part of the celebrations of the 30th anniversary of the ESA. Three presentations focused on a) the main messages from the Outcome4Medicine Consensus Conference, which took place in Zurich, Switzerland, in June 2022, b) the patient perspective, and c) benchmarking were hold by ESA members and discussed by ASA members in a symposium attended by members of both associations.
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Benchmarking , Avaliação de Resultados em Cuidados de Saúde , Humanos , França , Suíça , Qualidade de VidaRESUMO
OBJECTIVE: The authors sought to describe characteristics of effective mentoring relationships in academic surgery based upon lived experiences of mid-career and senior female academic surgeons. BACKGROUND: Prior qualitative work describes characteristics of successful mentoring relationships. However, no model exists of effective mentorship that is specific to academic surgery. METHODS: The authors conducted in-depth interviews with mid-career and senior female US academic surgeons about the impact of mentoring on professional development during 2014 and 2015. Purposive selection aimed to maximize institutional, specialty, years in career, and racial diversity. Grounded theory method was used to generate a conceptual model of effective mentoring relationships. Data saturation occurred following 15 interviews. RESULTS: Interviewees described the need for multiple mentors over time with each mentor addressing a unique domain. Interviewees suggested that mentees should seek mentors who will serve as strategic advisors, who will be unselfish, and who engage with diverse mentees. CONCLUSIONS: This study identified a need for multiple mentors across time and disciplines, and identified 3 key characteristics of effective mentoring relationships in academic surgery. Future work in this area should generate an operational definition of mentorship that supports quantitative evaluation of mentor and mentoring panel performance.
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Cirurgia Geral/educação , Teoria Fundamentada , Tutoria/normas , Adulto , Docentes de Medicina , Feminino , Humanos , Relações Interpessoais , Masculino , Pessoa de Meia-Idade , Médicas , Fatores SexuaisRESUMO
OBJECTIVES: Examine the effect of different types of firearms on readmission due to acute stress disorder (ASD) and/or post-traumatic stress disorder (PTSD) in firearm-injury victims. BACKGROUND: Survivors of firearm-related injuries suffer long-term sequelae such as disability, work loss, and deterioration in the quality of life. There is a paucity of data describing the long-term mental health outcomes in these patients. METHODS: We performed a 5-year (2011-2015) analysis of the Nationwide Readmission Database. All adult patients with firearm injuries were stratified into 3 groups by firearm type: handgun, shotgun, and semiautomatic rifle. Outcome measures were the incidence and predictors of ASD/PTSD. RESULTS: A total of 100,704 victims of firearm-related injuries were identified, of which 13.3% (n = 13,393) were readmitted within 6 months of index hospitalization, 6.7% (n = 8970) of these due to ASD/PTSD. Mean age was 34â±â14 years, 88% were men. Of those readmitted due to ASD/PTSD, 24% (n = 2153) sustained a handgun-related injury on index hospitalization, 12% (n = 1076) shotgun, and 64% (n = 5741) semiautomatic gun (P = 0.039). On regression analysis, semiautomatic gun and shotgun victims had higher odds of developing ASD/PTSD upon readmission [odds ratio (OR): 2.05 (1.10-4.12) and OR: 1.41 (1.08-2.11)] compared to handgun. Female sex [OR: 1.79 (1.05-3.05)] and younger age representing those younger than 25 years [OR: 4.66 (1.12-6.74)] were also independently associated with higher odds of ASD/PTSD. CONCLUSIONS: Apart from the lives lost, survivors of semiautomatic rifle- and shotgun-related injuries suffer long-term mental health sequalae. These secondary and debilitating mental health outcomes are important considerations for capturing the overall burden of the disease.
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Armas de Fogo , Readmissão do Paciente/estatística & dados numéricos , Transtornos de Estresse Pós-Traumáticos/etiologia , Transtornos de Estresse Traumático Agudo/etiologia , Ferimentos por Arma de Fogo/psicologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Incidência , Lactente , Recém-Nascido , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Transtornos de Estresse Traumático Agudo/diagnóstico , Transtornos de Estresse Traumático Agudo/epidemiologia , Sobreviventes/psicologia , Estados Unidos/epidemiologia , Ferimentos por Arma de Fogo/epidemiologia , Adulto JovemRESUMO
The signaling events that drive familial breast cancer (FBC) risk remain poorly understood. While the majority of genomic studies have focused on genetic risk variants, known risk variants account for at most 30% of FBC cases. Considering that multiple genes may influence FBC risk, we hypothesized that a pathway-based strategy examining different data types from multiple tissues could elucidate the biological basis for FBC. In this study, we performed integrated analyses of gene expression and exome-sequencing data from peripheral blood mononuclear cells and showed that cell adhesion pathways are significantly and consistently dysregulated in women who develop FBC. The dysregulation of cell adhesion pathways in high-risk women was also identified by pathway-based profiling applied to normal breast tissue data from two independent cohorts. The results of our genomic analyses were validated in normal primary mammary epithelial cells from high-risk and control women, using cell-based functional assays, drug-response assays, fluorescence microscopy, and Western blotting assays. Both genomic and cell-based experiments indicate that cell-cell and cell-extracellular matrix adhesion processes seem to be disrupted in non-malignant cells of women at high risk for FBC and suggest a potential role for these processes in FBC development.
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Neoplasias da Mama/metabolismo , Predisposição Genética para Doença , Transdução de Sinais , Idoso , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Adesão Celular , Estudos de Coortes , Feminino , Perfilação da Expressão Gênica , Variação Genética , Humanos , Leucócitos Mononucleares/metabolismo , Pessoa de Meia-IdadeRESUMO
The optimal method of reconstruction following mastectomy for breast cancer patients receiving radiation therapy (RT) is controversial. This study evaluated patient satisfaction and complication rates among patients who received implant-based breast reconstruction. The specific treatment algorithm analyzed included patients receiving mastectomy and immediate temporary tissue expander (TE), followed by placement of a permanent breast implant (PI). If indicated, RT was delivered to the fully expanded TE. Records of 218 consecutive patients with 222 invasive (85%) or in situ (15%) breast lesions from the Salt Lake City region treated between 1998 and 2009 were retrospectively reviewed, 28% of whom received RT. Median RT dose was 50.4 Gy, and 41% received a scar boost at a median dose of 10 Gy. Kaplan-Meier analyses were performed to evaluate the cumulative incidence of surgical complications, including permanent PI removal. Risk factors associated with surgical events were analyzed. To evaluate cosmetic results and patient satisfaction, an anonymous survey was administered. Mean follow-up was 44 months (range 6-144). Actuarial 5-year PI removal rates for non-RT and RT patients were 4% and 22%, respectively. On multivariate analysis (MVA), the only factor associated with PI removal was RT (p = 0.009). Surveys were returned describing the outcomes of 149 breasts. For the non-RT and RT groups, those who rated their breast appearance as good or better were 63% versus 62%, respectively. Under 1/3 of each group was dissatisfied with their reconstruction. RT did not significantly affect patient satisfaction scores, but on MVA RT was the only factor associated with increased PI removal. This reconstruction technique may be considered an acceptable option even if RT is needed, but the increased complication risk with RT must be recognized.
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Implante Mamário/métodos , Neoplasias da Mama/radioterapia , Neoplasias da Mama/cirurgia , Mamoplastia/efeitos adversos , Satisfação do Paciente , Adulto , Idoso , Idoso de 80 Anos ou mais , Implante Mamário/efeitos adversos , Implantes de Mama , Fracionamento da Dose de Radiação , Feminino , Humanos , Mamoplastia/métodos , Mastectomia , Pessoa de Meia-Idade , Estudos Retrospectivos , Expansão de Tecido/métodos , Dispositivos para Expansão de TecidosRESUMO
BACKGROUND: As part of a larger study evaluating breast cancer care, we attempted to validate our matching strategies between the National Cancer Data Base (NCDB) and ACS National Surgical Quality Improvement Program (ACS-NSQIP). METHODS: Using 2002-2006 data, we attempted to match cases by a three-tiered approach. Three groups resulted: (1) successfully matched, (2) NCDB case with no corresponding match in ACS-NSQIP, and (3) ACS-NSQIP case with no match in NCDB. Single institution (University of Utah) data were used for a nested validation study of the unmatched groups. RESULTS: The initial match yielded a 23.4% net match rate (rate of 8.6% at the University of Utah). In subset review of unmatched University of Utah cancer registry cases (NCDB, n = 153), 56% (n = 86) of cases had their index surgery at the University of Utah, with 15 potential matches in the unmatched ACS-NSQIP data using age and date of surgery and no potential match for 41 cases. Twenty-five remaining cases had a potential surgery date match if age was varied by 1 y with 18 confirmed matches. Review of unmatched ACS-NSQIP cases (n = 107) yielded 15 potential matches in the University of Utah cancer registry, with no potential match for 63 cases. Twenty-nine cases had a potential surgery date match if age was varied, with 26 confirmed matches. Review of ACS-NSQIP cases from 2006 for cancer status and stage revealed two cancer patients who were not in the cancer registry. CONCLUSIONS: Linking ACS-NSQIP and NCDB without a captive patient population results in low overall match rates due, in part, to specific inclusion criteria and different variable definitions for each database.
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Neoplasias da Mama/terapia , Bases de Dados Factuais , Melhoria de Qualidade , Sistema de Registros , HumanosRESUMO
BACKGROUND: Implicit bias is a key factor preventing the advancement and retention of women and underrepresented minorities in academic surgery. PURPOSE: We examined the role of implicit bias in the technical component of the residency performance evaluation. The Fundamentals of Laparoscopic Surgery (FLS) score, an objective measure of technical performance, was compared to the subjective technical skills (TS) score given by attending surgeons. PROCEDURES: FLS scores and the average TS scores from chief resident evaluations at a university program were analyzed from 2015 to 2019 (nâ¯=â¯29 residents; female 22%, underrepresented minorities 27%). The average TS score for each resident was calculated, scores dichotomized above and below the mean for the program and analyzed across gender and racial identity. MAIN FINDINGS: There were no significant differences in FLS or TS scores between male and female trainees or racial identity. The Kappa correlation coefficient between the 2 dichotomized scores was significantly lower for female (-0.50) versus male (0.23) trainees (p < 0.01); it was not significantly different between racial groups (pâ¯=â¯0.34). PRINCIPAL CONCLUSIONS: There was statistically significant difference in agreement between the FLS and TS scores of individual female and male trainees, suggesting the presence of implicit bias in our pilot study. Further research with a larger sample size is warranted. OBJECTIVE: To investigate the presence of implicit bias against women and underrepresented minorities in the technical component of the residency performance evaluation. We hypothesized that women and underrepresented racial minorities would have lower subjective technical skills (TS) scores as compared to their objective FLS scores, relative to the mean for the training program. DESIGN: FLS scores and the average TS scores from chief resident performance evaluations were analyzed from 2015-2019. Both FLS and the average TS scores were dichotomized above and below the mean for the program and analyzed across gender and racial identity. Research was approved by institutional IRB. SETTING: This study was conducted at the University of Arizona General Surgery Residency Program at Banner University Medical Center in Tucson, Arizona. This is a tertiary care university training program. PARTICIPANTS: Educational records of graduated general surgery chief residents from 2015 to 2019 were accessed for the study. We analyzed 37 TS scores from attending performance evaluations and 29 FLS scores reported to the program during the study period (22% female, 27% underrepresented racial minorities). RESULTS: There were no significant differences in FLS or TS scores between male and female trainees or racial identity. The Kappa correlation coefficient between the 2 dichotomized scores was significantly lower for female (-0.50) versus male (0.23) trainees (p < 0.01); it was not significantly different between racial groups (pâ¯=â¯0.34). CONCLUSIONS: There was a statistically significant difference in agreement between the FLS and TS score of individual female and male trainees, suggesting the presence of implicit bias in this pilot study. Further research with a larger sample size is warranted.
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Internato e Residência , Laparoscopia , Cirurgiões , Viés Implícito , Competência Clínica , Feminino , Humanos , Laparoscopia/educação , Masculino , Projetos PilotoRESUMO
OBJECTIVES: Reward and recognition of surgical education as an academic activity remains a highly variable process between institutions. The goal of this study is to provide expert consensus definition of an academic surgical educator, with focus on criteria for academic promotion. STUDY DESIGN AND SETTING: Following IRB approval, a Web-based modified Delphi process was used to generate prioritized academic promotion criteria for surgical educators. PARTICIPANTS AND SETTING: Participants were recruited nationally from a pool of senior academic surgeons who are members of the Society of University Surgeons and the Society of Surgical Chairs. RESULTS: Following a three-round modified Delphi process, the top domains of educational activity for promotion to associate professor and professor were scholarship, teaching, and administration; mentorship was also a priority category for promotion to professor. The top three activities described for promotion to Associate Professor were active participation in conferences/ departmental educational activities for medical students and residents; educational portfolio demonstrating commitment to activities as an educator; and clinical teaching excellence at their home institution. The three activities most highly scored items for promotion to Professor were mentorship of junior surgical educators; active participation in conferences/ departmental educational activities for medical students and residents; and a record of teaching excellence at the medical student and resident levels. CONCLUSIONS: These findings demonstrate a progression from teacher to scholar to leader across a surgical educator's career, with each level incorporating and building upon the prior activities. Identification of categories and criteria may meaningfully inform best practices to be incorporated into the career development and promotion processes for surgeons on an educator academic pathway.
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Docentes de Medicina , Cirurgiões , Mobilidade Ocupacional , Consenso , Bolsas de Estudo , Humanos , MentoresRESUMO
BACKGROUND: In addition to breast imaging, ultrasound offers the potential for characterizing and distinguishing between benign and malignant breast tissues due to their different microstructures and material properties. The aim of this study was to determine if high-frequency ultrasound (20-80 MHz) can provide pathology sensitive measurements for the ex vivo detection of cancer in margins during breast conservation surgery. METHODS: Ultrasonic tests were performed on resected margins and other tissues obtained from 17 patients, resulting in 34 specimens that were classified into 15 pathology categories. Pulse-echo and through-transmission measurements were acquired from a total of 57 sites on the specimens using two single-element 50-MHz transducers. Ultrasonic attenuation and sound speed were obtained from time-domain waveforms. The waveforms were further processed with fast Fourier transforms to provide ultrasonic spectra and cepstra. The ultrasonic measurements and pathology types were analyzed for correlations. The specimens were additionally re-classified into five pathology types to determine specificity and sensitivity values. RESULTS: The density of peaks in the ultrasonic spectra, a measure of spectral structure, showed significantly higher values for carcinomas and precancerous pathologies such as atypical ductal hyperplasia than for normal tissue. The slopes of the cepstra for non-malignant pathologies displayed significantly greater values that differentiated them from the normal and malignant tissues. The attenuation coefficients were sensitive to fat necrosis, fibroadenoma, and invasive lobular carcinoma. Specificities and sensitivities for differentiating pathologies from normal tissue were 100% and 86% for lobular carcinomas, 100% and 74% for ductal carcinomas, 80% and 82% for benign pathologies, and 80% and 100% for fat necrosis and adenomas. Specificities and sensitivities were also determined for differentiating each pathology type from the other four using a multivariate analysis. The results yielded specificities and sensitivities of 85% and 86% for lobular carcinomas, 85% and 74% for ductal carcinomas, 100% and 61% for benign pathologies, 84% and 100% for fat necrosis and adenomas, and 98% and 80% for normal tissue. CONCLUSIONS: Results from high-frequency ultrasonic measurements of human breast tissue specimens indicate that characteristics in the ultrasonic attenuation, spectra, and cepstra can be used to differentiate between normal, benign, and malignant breast pathologies.
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Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/cirurgia , Mastectomia Segmentar , Neoplasias da Mama/patologia , Estudos de Viabilidade , Feminino , Humanos , Período Intraoperatório , Sensibilidade e Especificidade , Análise Espectral , UltrassonografiaRESUMO
PURPOSE: To prospectively investigate whether a rapid dynamic MRI protocol, in conjunction with pharmacokinetic modeling, could provide diagnostically useful information for discriminating biopsy-proven benign lesions from malignancies. MATERIALS AND METHODS: Patients referred to breast biopsy based on suspicious screening findings were eligible. After anatomic imaging, patients were scanned using a dynamic protocol with complete bilateral breast coverage. Maps of pharmacokinetic parameters representing transfer constant (K(trans)), efflux rate constant (k(ep)), blood plasma volume fraction (v(p)), and extracellular extravascular volume fraction (v(e)) were averaged over lesions and used, with biopsy results, to generate receiver operating characteristic curves for linear classifiers using one, two, or three parameters. RESULTS: Biopsy and imaging results were obtained from 93 lesions in 74 of 78 study patients. Classification based on K(trans) and k(ep) gave the greatest accuracy, with an area under the receiver operating characteristic curve of 0.915, sensitivity of 91%, and specificity of 85%, compared with values of 88% and 68%, respectively, obtained in a recent study of clinical breast MRI in a similar patient population. CONCLUSION: Pharmacokinetic classification of breast lesions is practical on modern MRI hardware and provides significant accuracy for identification of malignancies. Sensitivity of a two-parameter linear classifier is comparable to that reported in a recent multicenter study of clinical breast MRI, while specificity is significantly higher.
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Doenças Mamárias/diagnóstico , Neoplasias da Mama/diagnóstico , Mama/patologia , Imageamento por Ressonância Magnética/métodos , Adulto , Idoso , Biópsia , Doenças Mamárias/patologia , Neoplasias da Mama/patologia , Feminino , Humanos , Pessoa de Meia-Idade , Farmacocinética , Estudos Prospectivos , Curva ROC , Reprodutibilidade dos Testes , Sensibilidade e EspecificidadeRESUMO
Data from preclinical studies suggest a link between increased risk of breast cancer and exposure to bisphenols at doses below what the United States Food and Drug Administration (FDA) considers as safe for consumption. Bisphenols exert estrogenic effects and are found in canned and plastic wrapped foods, food packaging, and plasticware. Mechanistically, bisphenols bind to the estrogen receptor (ER) and activate the expression of genes associated with cell proliferation and breast cancer. In this paper, we present a narrative literature review addressing bisphenol A and chemical analogs including bisphenol AF, bisphenol F, and bisphenol S selected as prototype xenoestrogens; then, we discuss biological mechanisms of action of these bisphenols in breast cells and potential impact of exposure at different stages of development (i.e., perinatal, peripubertal, and adult). Finally, we summarize studies detailing interactions, both preventative and promoting, of bisphenols with food components on breast cancer risk. We conclude the review with a discussion of current controversies in interpretation of the above research and future areas for investigation, including the impact of bisphenols and food components on breast tumor risk.
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Breast cancer is the most common malignancy and cause of cancer-related mortality among women worldwide. Triple negative breast cancers (TNBC) are the most aggressive and lethal of the breast cancer molecular subtypes, due in part to a poor understanding of TNBC etiology and lack of targeted therapeutics. Despite advances in the clinical management of TNBC, optimal treatment regimens remain elusive. Thus, identifying interventional approaches that suppress the initiation and progression of TNBC, while minimizing side effects, would be of great interest. Studies have documented an inverse relationship between the incidence of hormone receptor negative breast cancer and adherence to a Mediterranean Diet, particularly higher consumption of fish and olive oil. Here, we performed a review of studies over the last 5 years investigating the effects of fish oil, olive oil and their components in model systems of TNBC. We included studies that focused on the fish oil ω-3 essential fatty acids docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) in addition to olive oil polyphenolic compounds and oleic acid. Both beneficial and deleterious effects on TNBC model systems are reviewed and we highlight how multiple components of these Mediterranean Diet oils target signaling pathways known to be aberrant in TNBC including PI3K/Akt/mTOR, NF-κB/COX2 and Wnt/ß-catenin.
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BACKGROUND: Faculty attrition has been widely acknowledged and poorly understood throughout academic medicine. To date, barriers to career advancement in academic surgery have been identified and described in a limited fashion using only survey data. The authors sought to characterize career barriers for women academic surgeons using grounded theory methodology. METHODS: Authors conducted semi-structured interviews with 15 mid-career and senior female academic surgeons in the United States. Data were drawn together using grounded theory analysis of interview transcripts to develop a conceptual model. RESULTS: Interviewees identified barriers constituting two intersecting categories: (1) obstacles within the system of academic surgery and (2) impediments based in broader culture and its power structures. Interviewees' robust description of the challenges of integrating clinical and non-clinical professional responsibilities is novel. CONCLUSIONS: Career barriers identified by women in academic surgery are complex and include cultural factors from within and outside of the profession. Identifying and dismantling barriers, particularly those that negatively impact perceptions of belonging, is imperative to creating a culture of sustained excellence in academic surgery. SUMMARY: The authors used grounded theory method to develop a conceptual model of barriers to careers in academic surgery as described by successful female academic surgeons. The authors identified intersecting cultural barriers specific to academic surgery and derived from cultural power differentials.
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Escolha da Profissão , Mobilidade Ocupacional , Educação Médica , Docentes de Medicina/psicologia , Médicas/psicologia , Especialidades Cirúrgicas/educação , Adulto , Atitude do Pessoal de Saúde , Feminino , Teoria Fundamentada , Humanos , Pessoa de Meia-Idade , Estados UnidosRESUMO
This cohort study using pooled data from 2 randomized clinical trials examines whether removing more lymph nodes with axillary lymph node dissection improved outcomes over sentinel lymph node biopsy when most patients received adjuvant radiation therapy or regional nodal irradiation.
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Axila , Neoplasias da Mama , Humanos , Neoplasias da Mama/cirurgia , Neoplasias da Mama/patologia , Feminino , Excisão de Linfonodo/métodos , Metástase Linfática , Linfonodos/patologia , Linfonodos/cirurgiaRESUMO
OBJECTIVE: This study was undertaken to examine the effect of cirrhosis on elective and emergent umbilical herniorrhapy outcomes. METHODS: Procedures were identified from the Veterans' Affairs National Surgical Quality Improvement Program at 16 hospitals. Medical records and operative reports were physician abstracted to obtain preoperative and intraoperative variables. RESULTS: Of the 1,421 cases reviewed, 127 (8.9%) had cirrhosis. Cirrhotics were more likely to undergo emergent repair (26.0% vs. 4.8%, p < 0.0001), concomitant bowel resection (8.7% vs. 0.8%, p < 0.0001), return to operating room (7.9% vs. 2.5%, p = 0.0006), and increased postoperative length of stay (4.0 vs. 2.0 days, p = 0.01). Best-fit regression models found cirrhosis was not a significant predictor of postoperative complications. Significant predictors of complications were emergent case (OR 5.4; 95% CI 3.1-9.4), diabetes (OR 2.1; 95% CI 1.2-3.8), congestive heart failure (OR 4.0; 95% CI 1.4-11.4), and chronic obstructive pulmonary disease (OR 2.0; 95% CI 1.1-3.6). Among emergent repairs, cirrhosis (OR 4.4; 95% CI 1.3-14.3) was strongly associated with postoperative complications. CONCLUSION: Elective repair in cirrhotics is associated with similar outcomes as in patients without cirrhosis. Emergent repair in cirrhotics is associated with worse outcomes. Early elective repair may improve the overall outcomes for patients with cirrhosis.
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Hérnia Umbilical/cirurgia , Cirrose Hepática/complicações , Procedimentos Cirúrgicos Eletivos , Feminino , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Resultado do TratamentoRESUMO
CONTEXT: College of American Pathologists (CAP) and the American Society of Clinical Oncology have emphasized the need to reduce preanalytic variables for evaluating predictive biomarker expression in breast cancer. Postoperative x-ray of excised breast tissue is commonplace, yet is a variable that has not been investigated previously. We asked whether such radiation affects expression of relevant biomarkers. DESIGN: A previous study found that human breast cancers grown in mice demonstrate the same immunohistochemical and molecular profiles as the original tumors. Thirteen patient-derived xenografts were harvested fresh and divided for specimen radiography and a matched nonirradiated control, while following CAP/ASCO guidelines for cold ischemia time and fixation. Samples were processed in a tissue microarray for immunohistochemistry. Estrogen receptor (ER), progesterone receptor (PR), p53, and Ki67 staining was evaluated using an optimized scoring algorithm performed on digitally scanned slides. Samples were also scored manually by a blinded pathologist using the H-score method, and HER2 by the CAP/ASCO 2013 protocol. Histologic scores were compared by analysis of variance. RESULTS: There was no significant difference in quantity or intensity of staining between irradiated and nonirradiated samples for estrogen receptor (P=0.28), p53 (P=0.96), and Ki67 (P=0.94). A small but statistically significant difference was observed for PR (P=0.0058). HER2 staining was similarly unchanged in the 1 tumor exhibiting 3+ staining. CONCLUSIONS: Our study demonstrates that x-ray of breast carcinomas does not significantly affect the expression of predictive biomarkers, with the exception of PR for unclear reasons. It also highlights the utility of the patient-derived xenograft model for biomarker studies.
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Biomarcadores Tumorais/biossíntese , Neoplasias da Mama/metabolismo , Regulação Neoplásica da Expressão Gênica , Raios X , Animais , Neoplasias da Mama/patologia , Feminino , Xenoenxertos , Humanos , Camundongos , Transplante de NeoplasiasRESUMO
BACKGROUND: We used data from the Patient Safety in Surgery Study to compare patient populations, operative characteristics, and unadjusted and risk-adjusted 30-day postoperative mortality and morbidity between the Veterans Affairs (VA) (n = 94,098) and private (n = 18,399) sectors for general surgery operations in men. STUDY DESIGN: This is a prospective cohort study. Trained nurses collected preoperative risk factors, operative variables, and 30-day postoperative mortality and morbidity outcomes in male patients undergoing major general surgery operations at 128 VA medical centers and 14 university medical centers from October 1, 2001, to September 30, 2004. Multiple logistic regression analysis was used to identify preoperative predictors of postoperative mortality and morbidity. An indicator variable for VA versus private-sector medical center was added to the model to determine if risk-adjusted outcomes were significantly different in the two systems. RESULTS: The unadjusted 30-day mortality rate was higher in the VA compared with the private sector (2.62% versus 2.03%, p = 0.0002); unadjusted morbidity rate was lower in the VA compared with the private sector (12.24% versus 13.99%, p < 0.0001). After risk adjustment, odds ratio for mortality for the VA versus private sector was 1.23 (95% CI, 1.08-1.41). For morbidity after risk adjustment, the indicator variable for health-care system just missed statistical significance (p = 0.0585). Thirty-day postoperative mortality was comparable in the VA and private sector for very common operations but was higher in the VA for less common, more complex operations. CONCLUSIONS: In general surgery operations in men, the VA appeared to have a higher risk-adjusted mortality rate compared with the private sector, but differences in mortality ascertainment in the two sectors might account for some of this effect. The higher mortality in the VA could be the result of higher mortality in the less common, more complex operations. There is a trend toward lower risk-adjusted morbidity in the VA compared with the private sector.
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Centros Médicos Acadêmicos , Hospitais de Veteranos , Complicações Pós-Operatórias/epidemiologia , Procedimentos Cirúrgicos Operatórios/mortalidade , Centros Médicos Acadêmicos/normas , Estudos de Coortes , Hospitais de Veteranos/normas , Humanos , Masculino , Morbidade , Complicações Pós-Operatórias/mortalidade , Setor Privado , Estudos Prospectivos , Análise de Regressão , Fatores de Risco , Segurança , Estados Unidos/epidemiologiaRESUMO
BACKGROUND: In the era of Helicobacter pylori treatment, the role of vagotomy in bleeding duodenal ulcers is debatable. National outcomes were evaluated to determine the current surgical treatment and use of vagotomy for bleeding duodenal ulcers. METHODS: Data from the Nationwide Inpatient Sample (NIS) were used from years 1999 to 2003. Patients were selected using diagnostic codes for acute duodenal ulcer bleed and procedure codes for simple oversew of a bleeding ulcer and vagotomy. Data were analyzed using multiple linear and logistic regression. RESULTS: Between 1999 and 2003, 100,931 patients with an acute bleeding duodenal ulcer were identified. Over time, there was a decrease in the number of acute bleeding ulcers (p = 0.027) and a decrease in the number of vagotomies (p = 0.027). A high co-morbidity index [odds ratio (OR), 0.60, p = 0.017], operation in the Midwest (OR 0.50, p < 0.001) and operation in the West (OR 0.68, p = 0.034) were predictive of no vagotomy during surgery for a bleeding duodenal ulcer. CONCLUSIONS: A vagotomy is not commonly performed during surgical treatment of an acute bleeding duodenal ulcer. This variation in practice was not fully explained by patient characteristics. We must seek new evidence to determine the safety of combined medical and surgical management of this clinical problem.
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Úlcera Duodenal/complicações , Úlcera Duodenal/cirurgia , Úlcera Péptica Perfurada/cirurgia , Vagotomia/estatística & dados numéricos , Idoso , Comorbidade , Úlcera Duodenal/epidemiologia , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Úlcera Péptica Perfurada/epidemiologia , Complicações Pós-Operatórias , Técnicas de Sutura , Resultado do Tratamento , Estados Unidos/epidemiologia , Vagotomia/tendênciasRESUMO
PURPOSE OF STUDY: To examine change in balance-related fall risk and daily functional abilities in the first 2 post-operative weeks and up to 6 weeks after gynecologic surgery. MATERIALS AND METHODS: Prospective cohort study in gynecologic surgery patients age 65 and older. Balance confidence (Activities-specific Balance Confidence Scale) and functional status (basic and instrumental activities of daily living) were recorded pre- and post-operatively daily for 1 week and twice the second week. Physical performance balance and functional mobility were measured pre- and 1 week post-operatively using the Tinetti Fall Risk Scale, Timed Up and Go, and 6-Minute Walk test. Measures were repeated 6 weeks after surgery. Non-parametric tests for paired data were used comparing scores baseline to post-operative (POD) 7 and to POD 42. RESULTS: Median age was 72 years (range 65-88). Fall risk was elevated during the first 2 post-operative weeks, greatest on the median discharge day, POD 2 (p<0.01). Balance performance and functional mobility at 1 week were significantly lower than baseline (p<0.01). Functional abilities declined, including new dependence in medication management at home in 22% of these independent and cognitively intact women. CONCLUSIONS: After gynecologic surgery, older women's fall risk is highest on POD 2 and remains elevated from baseline for 2 weeks. Functional limitations in the early home recovery period include the anticipated (bathing, cooking, etc.) and some unanticipated (medication management) ones. This information may help with post-operative discharge planning.