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1.
Ann Plast Surg ; 90(6S Suppl 5): S556-S562, 2023 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-36752516

RESUMEN

BACKGROUND: Patients with advanced cancer staging have a greater risk of developing venous thromboembolism than noncancer patients. The impact of breast cancer stage and treatment on outcomes after autologous free-flap breast reconstruction (ABR) is not well-established. The objective of this retrospective study is to determine the impact of breast cancer characteristics, such as cancer stage, hormone receptor status, and neoadjuvant treatments, on vascular complications of ABR. METHODS: A retrospective review was conducted examining patients who underwent ABR from 2009 to 2018. Breast cancer stage, cancer types, hormone receptor status, and treatments were collected in addition to demographic data. Intraoperative vascular concerns, postoperative vascular concerns, and flap loss were analyzed. Univariate analysis and fixed-effects models were used to associate breast cancer characteristics with outcomes. RESULTS: Neoadjuvant hormone therapy was associated with increased risk for intraoperative vascular concern (odds ratio, 1.059 [ P = 0.0441]). Neoadjuvant trastuzumab was associated with decreased risk of postoperative vascular concern (odds ratio, 0.941 [ P = 0.018]). Breast cancer stage, somatic genetic mutation, receptor types, neoadjuvant chemotherapy, and neoadjuvant radiation had no effect on any vascular complications of ABR. CONCLUSION: Autologous free-flap breast reconstruction is a reliable reconstructive option for patients with all stages and types of breast cancer. There is potentially increased risk of intraoperative microvascular compromise in patients who have neoadjuvant hormone therapy. Trastuzumab is potentially protective against postoperative microvascular compromise. Patients should feel confident that, despite higher stage cancer, they can pursue their desired reconstructive option without fear of vascular compromise.


Asunto(s)
Neoplasias de la Mama , Enfermedades Cardiovasculares , Mamoplastia , Humanos , Femenino , Neoplasias de la Mama/tratamiento farmacológico , Mastectomía/efectos adversos , Mamoplastia/efectos adversos , Estudios Retrospectivos , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/cirugía , Trastuzumab/uso terapéutico , Hormonas/uso terapéutico , Resultado del Tratamiento
2.
Ann Surg Oncol ; 2022 Mar 18.
Artículo en Inglés | MEDLINE | ID: mdl-35303180

RESUMEN

BACKGROUND: Results of an earlier retrospective study from our institution suggested that patients with triple negative breast cancer (TNBC) who had preoperative MRI may have had an improved local recurrence rate (LRR) after breast conserving surgery (BCS). We aimed to clarify the impact of preoperative MRI on surgical outcomes in an expanded TNBC cohort treated by BCS in a contemporary era. METHODS: Our study cohort comprised 648 patients with TNBC who underwent BCS between 2009 and 2018. Demographic and clinical characteristics were compared between those with (n = 292, 45.1%) and without (n = 356, 54.9%) preoperative MRI. Multivariable logistic regression was performed to assess the association of preoperative MRI with surgical outcomes. RESULTS: The crude LRR of 3.5% was lower than previously reported. Univariable analyses demonstrated that the LRR and re-excision rates in the MRI and no-MRI groups were 3.4 and 3.7%, 21.6% and 27.2%, p = 0.876 and p = 0.10, respectively. Multivariable logistic regression analyses demonstrated that preoperative MRI was not associated with a lower LRR: odds ratio (OR) = 1.42 (p = 0.5). During our study period, new margin guidelines and shave margins practice were adopted in 2014 and 2015. To account for their effects, the year of diagnosis/surgery and other clinical variables were adjusted in multivariable logistic regression and inverse probability weighting models to demonstrate that preoperative MRI remained associated with a lower re-excision risk, OR 0.56, p = 0.04l; and a lower re-excision rate, 23.15% versus 36.0%, p < 0.01, respectively. CONCLUSIONS: Our findings suggested that patients with TNBC anticipating BCS may benefit from preoperative MRI.

3.
Ann Surg Oncol ; 29(3): 1797-1804, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-34523005

RESUMEN

BACKGROUND: The American College of Surgeons Commission on Cancer's (CoC) new operative standards for breast cancer, melanoma, and colon cancer surgeries will require that surgeons provide synoptic documentation of essential oncologic elements within operative reports. Prior to designing and implementing an electronic tool to support synoptic reporting, we evaluated current documentation practices at our institution to understand baseline concordance with these standards. METHODS: Applicable procedures performed between 1 January 2018 and 31 December 2018 were included. Two independent reviewers evaluated sequential operative notes, up to a total of 100 notes, for documentation of required elements. Complete concordance (CC) was defined as explicit documentation of all required CoC elements. Mean percentage CC and surgeon-specific CC were calculated for each procedure. Interrater reliability was assessed via Cohen's kappa statistic. RESULTS: For sentinel lymph node biopsy, mean CC was 66% (n = 100), with surgeon-specific CC ranging from 6 to 100%, and for axillary dissection, mean CC was 12% (n = 89) and surgeon-specific CC ranged from 0 to 47%. The single surgeon performing melanoma wide local excision had a mean CC of 98% (n = 100). For colon resections, mean CC was 69% (n = 96) and surgeon-specific CC ranged from 39 to 94%. Kappa scores were 0.77, 0.78, -0.15, and 0.78, respectively. CONCLUSIONS: We identified heterogeneity in current documentation practices. In our cohort, rates of baseline concordance varied across surgeons and procedures. Currently, documentation elements are interspersed within the operative report, posing challenges to chart abstraction with resulting imperfect interrater reliability. This presents an exciting opportunity to innovate and improve compliance by introducing an electronic synoptic documentation tool.


Asunto(s)
Neoplasias de la Mama , Biopsia del Ganglio Linfático Centinela , Neoplasias de la Mama/cirugía , Documentación , Femenino , Humanos , Escisión del Ganglio Linfático , Reproducibilidad de los Resultados
4.
Support Care Cancer ; 29(2): 1055-1063, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32592032

RESUMEN

PURPOSE: Poor health literacy and awareness are thought to be some of the major contributors to existing racial/ethnic disparities in access to breast reconstruction after mastectomy. This study aimed to determine whether physician led, community-based educational symposium improves understanding of breast cancer care and breast reconstruction in underserved populations. METHODS: Annual educational symposiums were held between 2017 and 2019 in underserved communities in the greater Philadelphia area. The symposium consisted of a series of short lectures on breast health, cancer screening, surgical management and reconstruction, patient testimonials, a Q&A panel, and an exhibitor fair. Attendees were given pre- and post-symposium surveys that evaluated knowledge of breast cancer care and reconstruction on a 0-100 scale based on percentage of correct answers. RESULTS: Of 169 individuals, 92%, 91%, and 83% completed pre-symposium, post-symposium, and both surveys, respectively. Median age was 60 years, and 92% were Black. Knowledge/understanding survey scores significantly improved after the symposium (50 vs. 87, p < 0.01). Of all respondents, 92% found the symposium to be useful, 89% were introduced to resources that they were not previously aware of, 90% would recommend the symposium to others, and 91% would pass along the information they learned. CONCLUSION: This study presents an effective and reproducible strategy to increase community awareness and understanding of general breast cancer concepts and breast reconstruction options. Through community outreach and education, physicians can help underserved populations have a better understanding of their potential options for breast reconstruction and ultimately reduce this well documented but inadequately addressed disparity in cancer care.


Asunto(s)
Neoplasias de la Mama/cirugía , Mamoplastia/educación , Mamoplastia/métodos , Mastectomía/métodos , Adulto , Detección Precoz del Cáncer , Femenino , Disparidades en Atención de Salud , Humanos , Persona de Mediana Edad , Encuestas y Cuestionarios , Poblaciones Vulnerables
5.
Cancer ; 126 Suppl 10: 2379-2393, 2020 05 15.
Artículo en Inglés | MEDLINE | ID: mdl-32348566

RESUMEN

When breast cancer is detected and treated early, the chances of survival are very high. However, women in many settings face complex barriers to early detection, including social, economic, geographic, and other interrelated factors, which can limit their access to timely, affordable, and effective breast health care services. Previously, the Breast Health Global Initiative (BHGI) developed resource-stratified guidelines for the early detection and diagnosis of breast cancer. In this consensus article from the sixth BHGI Global Summit held in October 2018, the authors describe phases of early detection program development, beginning with management strategies required for the diagnosis of clinically detectable disease based on awareness education and technical training, history and physical examination, and accurate tissue diagnosis. The core issues address include finance and governance, which pertain to successful planning, implementation, and the iterative process of program improvement and are needed for a breast cancer early detection program to succeed in any resource setting. Examples are presented of implementation, process, and clinical outcome metrics that assist in program implementation monitoring. Country case examples are presented to highlight the challenges and opportunities of implementing successful breast cancer early detection programs, and the complex interplay of barriers and facilitators to achieving early detection for breast cancer in real-world settings are considered.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Detección Precoz del Cáncer/métodos , Implementación de Plan de Salud/métodos , Consenso , Atención a la Salud , Países en Desarrollo , Detección Precoz del Cáncer/economía , Femenino , Salud Global , Implementación de Plan de Salud/economía , Humanos , Guías de Práctica Clínica como Asunto , Factores Socioeconómicos
6.
Breast J ; 26(3): 353-367, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31538703

RESUMEN

Randomized controlled trials (RCTs) have challenged the need for routine radiation therapy (RT) in women ≥ age 70 with favorable early stage breast cancer (BC) due to modest improvement in local control and no survival benefit. We studied practice patterns in RT among elderly women in the United States. We analyzed data from the National Cancer Database (NCDB) of women ≥age 70 diagnosed with T1 or T2 and N0 invasive BC treated with breast conservation surgery (BCS) between 2004 and 2014. Patients were divided into four groups: (1) no RT, (2) partial breast irradiation (PBI); (3) hypofractionation (HF); and (4) conventional whole breast RT (CWBI). Univariable and multivariable analyses (MVA) were performed to compare characteristics among the four RT groups. A subgroup analysis of women with favorable disease (T1N0 ER + HER2-) was also performed with similar statistical comparisons. Of the 66,126 meeting eligibility, 9,570 (14.5%) had PBI, 16,340 (24.7%) had HF, and 40,117 (60.7%) had CWBI. Only 99 patients (0.15%) had RT omitted. Omission of RT increased marginally from 0.04% in 2004 to 0.24% in 2014. MVA identified older age (OR 1.18, CI 1.08-1.28), more comorbidities (Charlson-Deyo Score of 1) (OR 3.36, CI 1.29-8.72), and no hormone therapy (OR 22.07, CI 5.79-84.07) as more likely to have RT omitted. The use of HF increased from 3.9% to 47.0%, P < .001 with a concomitant decrease in CWBI from 88% to 41%, P < .001. MVA identified older age, treatment location, and omission of chemotherapy as associated with HF. No significant differences from the larger cohort were found among the T1N0 subgroup analysis. Despite RCT evidence, omission of RT was rare in the United States, suggesting that more effective outreach methods to disseminate clinical guideline information may be needed.


Asunto(s)
Neoplasias de la Mama , Mastectomía Segmentaria , Anciano , Mama/patología , Neoplasias de la Mama/patología , Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/cirugía , Femenino , Humanos , Estadificación de Neoplasias , Hipofraccionamiento de la Dosis de Radiación , Radioterapia Adyuvante , Estados Unidos
7.
J Surg Oncol ; 118(1): 238-242, 2018 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-30114323

RESUMEN

BACKGROUND: Nipple sparing mastectomy (NSM) is considered safe for select patients. Our objective was to examine quality of life (QOL) and satisfaction for NSM compared with skin sparing mastectomy (SSM). We aimed to evaluate these using the BREAST-Q. METHODS: After IRB approval, we analyzed patients who underwent NSM and reconstruction between July 2010-June 2015. NSM patients were matched with those after SSM based on age, race, and body mass index. Telephone interviews were prospectively conducted using the BREAST-Q Mastectomy Postoperative Module. Bivariate analysis and a paired samples t-test were performed. RESULTS: We identified 43 patients meeting our inclusion criteria with a response rate 60% (N = 26). NSM and SSM patients were matched well in age (P = 1.00), race (P = 1.00), and Body Mass Index (P = 0.99). There were no significant differences in stage, estrogen and progesterone status, HER2 expression, reconstruction type and radiation. Mean BREAST-Q scores did not vary between NSM and SSM in regards to satisfaction with breasts (P = 0.604), psychosocial well-being (P = 0.146), physical well-being (P = 0.121), and satisfaction with surgeon (P = 0.170). Sexual well-being was significantly higher in NSM patients (P = 0.011). CONCLUSION: NSM provides patients with favorable results in psychosocial, sexual, and physical well-being and overall satisfaction. Sexual well-being showed significant improvement for NSM.


Asunto(s)
Neoplasias de la Mama/psicología , Neoplasias de la Mama/cirugía , Mastectomía Subcutánea/métodos , Pezones/cirugía , Adulto , Estudios de Casos y Controles , Femenino , Humanos , Mastectomía Subcutánea/psicología , Persona de Mediana Edad , Satisfacción del Paciente , Calidad de Vida
9.
World J Surg Oncol ; 14(1): 277, 2016 Oct 28.
Artículo en Inglés | MEDLINE | ID: mdl-27793162

RESUMEN

BACKGROUND: With the incidence of breast cancer rising worldwide, we are evaluating the iBreastExam (iBE) (UE LifeSciences Inc.), a handheld breast scanning device that can be utilized by community health workers to screen for breast abnormalities. The purpose of this study is to determine the sensitivity of the iBE in a population undergoing diagnostic breast imaging. METHODS: Adult patients presenting to a breast imaging center for a diagnostic workup were eligible. Patients underwent an iBE exam performed by a trained ultrasound technician followed by their indicated imaging. Demographic, imaging, and biopsy data were recorded. RESULTS: Seventy-eight iBE exams were completed, 77 females and one male with a mean age of 42 (21-79). All patients were evaluated by ultrasound, 52 had diagnostic mammography and 39 had biopsies. Imaging and/or biopsy confirmed a mass (fibroadenoma, cyst, papilloma, myofibroblastoma, fat necrosis, DCIS, or cancer) in 60 patients. Twelve patients had a cancer diagnosed. In total, 342 quadrants were scanned, 77 quadrants had lesions confirmed on imaging, and iBE correctly identified 66 lesions for a sensitivity of 86 % and specificity of 89 %. CONCLUSIONS: This validation study demonstrated excellent sensitivity of iBE for the identification of clinically significant lesions in patients presenting for diagnostic imaging. TRIAL REGISTRATION: A Cost-Effective Handheld Breast Scanner for Use in Low Resource Environments: A Validation Study: NCT02814292 .


Asunto(s)
Neoplasias de la Mama/diagnóstico por imagen , Carcinoma Ductal de Mama/diagnóstico por imagen , Carcinoma Intraductal no Infiltrante/diagnóstico por imagen , Fibroadenoma/diagnóstico por imagen , Papiloma/diagnóstico por imagen , Ultrasonografía Mamaria/instrumentación , Ultrasonografía Mamaria/métodos , Adulto , Anciano , Neoplasias de la Mama/economía , Neoplasias de la Mama/patología , Carcinoma Ductal de Mama/economía , Carcinoma Ductal de Mama/patología , Carcinoma Intraductal no Infiltrante/economía , Carcinoma Intraductal no Infiltrante/patología , Femenino , Fibroadenoma/economía , Fibroadenoma/patología , Estudios de Seguimiento , Humanos , Mamografía , Persona de Mediana Edad , Invasividad Neoplásica , Estadificación de Neoplasias , Papiloma/economía , Papiloma/patología , Pronóstico , Ultrasonografía Mamaria/economía , Adulto Joven
10.
Blood ; 121(15): 2914-22, 2013 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-23422746

RESUMEN

The determinants of HIV-1-associated lymphadenopathy are poorly understood. We hypothesized that lymphocytes could be sequestered in the HIV-1+ lymph node (LN) through impairments in sphingosine-1-phosphate (S1P) responsiveness. To test this hypothesis, we developed novel assays for S1P-induced Akt phosphorylation and actin polymerization. In the HIV-1+ LN, naïve CD4 T cells and central memory CD4 and CD8 T cells had impaired Akt phosphorylation in response to S1P, whereas actin polymerization responses to S1P were impaired dramatically in all LN maturation subsets. These defects were improved with antiretroviral therapy. LN T cells expressing CD69 were unable to respond to S1P in either assay, yet impaired S1P responses were also seen in HIV-1+ LN T cells lacking CD69 expression. Microbial elements, HIV-1, and interferon α - putative drivers of HIV-1 associated immune activation all tended to increase CD69 expression and reduce T-cell responses to S1P in vitro. Impairment in T-cell egress from lymph nodes through decreased S1P responsiveness may contribute to HIV-1-associated LN enlargement and to immune dysregulation in a key organ of immune homeostasis.


Asunto(s)
Linfa/efectos de los fármacos , Activación de Linfocitos/efectos de los fármacos , Lisofosfolípidos/farmacología , Esfingosina/análogos & derivados , Linfocitos T/efectos de los fármacos , Adulto , Anciano , Anciano de 80 o más Años , Animales , Antirretrovirales/uso terapéutico , Antígenos CD/inmunología , Antígenos CD/metabolismo , Antígenos de Diferenciación de Linfocitos T/inmunología , Antígenos de Diferenciación de Linfocitos T/metabolismo , Línea Celular Tumoral , Células Cultivadas , Femenino , Citometría de Flujo , Expresión Génica/inmunología , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/inmunología , Infecciones por VIH/metabolismo , VIH-1/efectos de los fármacos , VIH-1/inmunología , Humanos , Lectinas Tipo C/inmunología , Lectinas Tipo C/metabolismo , Linfa/inmunología , Linfa/metabolismo , Activación de Linfocitos/inmunología , Masculino , Persona de Mediana Edad , Fosforilación/efectos de los fármacos , Proteínas Proto-Oncogénicas c-akt/metabolismo , Receptores de Lisoesfingolípidos/genética , Receptores de Lisoesfingolípidos/inmunología , Receptores de Lisoesfingolípidos/metabolismo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Esfingosina/farmacología , Receptores de Esfingosina-1-Fosfato , Linfocitos T/inmunología , Linfocitos T/metabolismo
11.
Psychooncology ; 24(4): 402-7, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25044780

RESUMEN

OBJECTIVE: Breast cancer survivors receiving hormone treatment and/or endorsing histories of receiving chemotherapy report changes in their cognitive capacity, which is often not supported by formal testing. To address these conflicting reports, this study examined survivors' applied cognitive capacity and its association with hormone treatment, depression, and selected demographics. METHODS: A descriptive, correlational, cross-sectional survey design was employed. There were 357 women who completed a survey comprised of 69 questions. The survey included both investigator-developed questions and instruments from the PROMIS(®) system. RESULTS: There were significant main effects for hormone therapy, race, and depression. Depression explained the largest portion of variance of the perceived decreases in cognitive function among breast cancer survivors. CONCLUSIONS: Survivor complaints of changes in cognitive function may be a predictor for evaluating the presence of mood disorders and less a function of hormone therapy or chemotherapy history.


Asunto(s)
Antineoplásicos Hormonales/uso terapéutico , Neoplasias de la Mama/psicología , Trastornos del Conocimiento/psicología , Depresión/psicología , Trastorno Depresivo/psicología , Sobrevivientes/psicología , Negro o Afroamericano/psicología , Anciano , Inhibidores de la Aromatasa/uso terapéutico , Neoplasias de la Mama/terapia , Quimioterapia Adyuvante , Cognición , Estudios Transversales , Femenino , Humanos , Persona de Mediana Edad , Análisis de Regresión , Factores de Riesgo , Tamoxifeno/uso terapéutico , Población Blanca/psicología
12.
J Infect Dis ; 210(4): 619-29, 2014 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-24585897

RESUMEN

BACKGROUND: Systemic inflammation has been linked to a failure to normalize CD4(+) T-cell numbers in treated human immunodeficiency virus (HIV) infection. Although inflammatory cytokines such as interleukin 6 (IL-6) are predictors of disease progression in treated HIV infection, it is not clear how or whether inflammatory mediators contribute to immune restoration failure. METHODS: We examined the in vitro effects of IL-6 and interleukin 1ß (IL-1ß) on peripheral blood T-cell cycling and CD127 surface expression. RESULTS: The proinflammatory cytokine IL-1ß induces cell cycling and turnover of memory CD4(+) T cells, and IL-6 can induce low-level cycling of naive T cells. Both IL-1ß and IL-6 can decrease T-cell surface expression and RNA levels of CD127, the interleukin 7 receptor α chain (IL-7Rα). Preexposure of healthy peripheral blood mononuclear cells (PBMCs) to IL-6 or IL-1ß attenuates IL-7-induced Stat5 phosphorylation and induction of the prosurvival factor Bcl-2 and the gut homing integrin α4ß7. We found elevated expression of IL-1ß in the lymphoid tissues of patients with HIV infection that did not normalize with antiretroviral therapy. CONCLUSIONS: Induction of CD4(+) T-cell turnover and diminished T-cell responsiveness to IL-7 by IL-1ß and IL-6 exposure may contribute to the lack of CD4(+) T-cell reconstitution in treated HIV-infected subjects.


Asunto(s)
Linfocitos T CD4-Positivos/inmunología , Infecciones por VIH/inmunología , Interleucina-7/inmunología , Terapia Antirretroviral Altamente Activa/métodos , Linfocitos T CD4-Positivos/citología , Ciclo Celular/inmunología , Células Cultivadas , Infecciones por VIH/tratamiento farmacológico , VIH-1/efectos de los fármacos , VIH-1/inmunología , Humanos , Inflamación/inmunología , Interleucina-1beta/inmunología , Interleucina-6/inmunología , Subunidad alfa del Receptor de Interleucina-7/inmunología , Leucocitos Mononucleares/inmunología , Receptores de Interleucina-7/inmunología
13.
J Surg Educ ; 81(5): 753-757, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38556438

RESUMEN

OBJECTIVE: Our aim was to assess how ChatGPT compares to Google search in assisting medical students during their surgery clerkships. DESIGN: We conducted a crossover study where participants were asked to complete 2 standardized assessments on different general surgery topics before and after they used either Google search or ChatGPT. SETTING: The study was conducted at the Perelman School of Medicine at the University of Pennsylvania (PSOM) in Philadelphia, Pennsylvania. PARTICIPANTS: 19 third-year medical students participated in our study. RESULTS: The baseline (preintervention) performance of participants on both quizzes did not differ between the Google search and ChatGPT groups (p = 0.728). Students overall performed better postintervention and the difference in test scores was statistically significant for both the Google group (p < 0.001) and the ChatGPT group (p = 0.01). The mean percent increase in test scores pre- and postintervention was higher in the Google group at 11% vs. 10% in the ChatGPT group, but this difference was not statistically significant (p = 0.87). Similarly, there was no statistically significant difference in postintervention scores on both assessments between the 2 groups (p = 0.508). Postassessment surveys revealed that all students (100%) have known about ChatGPT before, and 47% have previously used it for various purposes. On a scale of 1 to 10 with 1 being the lowest and 10 being the highest, the feasibility of ChatGPT and its usefulness in finding answers were rated as 8.4 and 6.6 on average, respectively. When asked to rate the likelihood of using ChatGPT in their surgery rotation, the answers ranged between 1 and 3 ("Unlikely" 47%), 4 to 6 ("intermediate" 26%), and 7 to 10 ("likely" 26%). CONCLUSION: Our results show that even though ChatGPT was comparable to Google search in finding answers pertaining to surgery questions, many students were reluctant to use ChatGPT for learning purposes during their surgery clerkship.


Asunto(s)
Estudios Cruzados , Cirugía General , Cirugía General/educación , Humanos , Femenino , Masculino , Educación de Pregrado en Medicina/métodos , Prácticas Clínicas , Evaluación Educacional , Internet , Motor de Búsqueda , Estudiantes de Medicina/estadística & datos numéricos
14.
J Surg Educ ; 81(3): 373-381, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38177035

RESUMEN

OBJECTIVE: Stereotypes of surgeons are pervasive and play a role in medical students' decisions about pursuing a surgical career. This study aimed to determine: (1) how medical students' perceptions of surgery and surgeons changed following exposure to surgery during clerkship rotations; and (2) if gender and racial/ethnic identification played a role in this process. DESIGN, SETTING, AND PARTICIPANTS: In this mixed-method study, clerkship students at one U.S. medical school were asked to anonymously contribute words and phrases that they associated with surgery to an online "word cloud" at the beginning and end of their 12-week surgery clerkship. In addition, an end-of-year, anonymous survey of their perceptions was administered and analyzed using a Grounded Theory approach. RESULTS: Of 154 students invited to complete the online survey, analysis of 24 completed surveys suggested that students believe surgical culture to be toxic, with unfriendly attitudes, strict hierarchy, and lack of work-life balance. Analysis of 678 Word Cloud responses, however, indicated that the frequency of complimentary responses increased following surgery clerkships (25% vs 36%; z = -3.26; p = 0.001), while the proportion of responses describing surgery/surgeons as male-dominated, egotistical, and scary decreased (5% vs 1%, z = 2.86, p = 0.004; 9% vs 4%, z = 2.78, p = 0.005; 3% vs 0.3%, z = 2.56, p = 0.011, respectively). The association between surgeons and being White disappeared entirely. Female students were more likely than male students to state that their perceptions did not change following exposure (40% vs 0%; z = 2.19; p = 0.029). CONCLUSIONS: With exposure to surgery, students' preconceived notions may be positively influenced. However, students continue to hold negative perceptions, and this effect may be stratified by gender identification. Institutions should work to address these perceptions in pre-clerkship years to attract a more diverse pool of future surgeons.


Asunto(s)
Prácticas Clínicas , Educación de Pregrado en Medicina , Cirugía General , Estudiantes de Medicina , Cirujanos , Humanos , Masculino , Femenino , Actitud , Encuestas y Cuestionarios , Facultades de Medicina , Selección de Profesión , Educación de Pregrado en Medicina/métodos , Cirugía General/educación
15.
J Surg Educ ; 2024 May 26.
Artículo en Inglés | MEDLINE | ID: mdl-38802290

RESUMEN

OBJECTIVE: To collaboratively develop a hybrid virtual curriculum for a medical school surgery clerkship within an emerging medical university in Vietnam. DESIGN: A hybrid virtual surgery clerkship curriculum was collaboratively developed by Vietnamese and American surgeons as part of an international partnership between their respective universities. A set of 25 virtual lectures with associated materials were created and deployed in tandem with live, in-person review and skills sessions. Student quantitative and qualitative evaluation methods were developed and deployed to allow continuous iteration. A 6-month course was deployed to develop surgical faculty into effective teachers. SETTING: The curriculum was deployed at VinUniversity College of Health Sciences, the youngest medical university in Vietnam. It was developed in collaboration with the University of Pennsylvania Perelman School of Medicine. Each cohort of 12 students in the surgical clerkship will participate in the curriculum. CONCLUSIONS: The development of this hybrid surgical clerkship in Vietnam leveraged local resources and expertise with those available remotely. Lessons learned are directly applicable to future collaborative curriculum development efforts at other emerging medical schools.

16.
J Surg Res ; 179(1): e1-e12, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22480830

RESUMEN

Thermal plasma is a valued tool in surgery for its coagulative and ablative properties. We suggested through in vitro studies that nonthermal plasma can sterilize tissues, inactive pathogens, promote coagulation, and potentiate wound healing. The present research was undertaken to study acute toxicity in porcine skin tissues. We demonstrate that floating electrode-discharge barrier discharge (FE-DBD) nonthermal plasma is electrically safe to apply to living organisms for short periods. We investigated the effects of FE-DBD plasma on Yorkshire pigs on intact and wounded skin immediately after treatment or 24h posttreatment. Macroscopic or microscopic histological changes were identified using histological and immunohistochemical techniques. The changes were classified into four groups for intact skin: normal features, minimal changes or congestive changes, epidermal layer damage, and full burn and into three groups for wounded skin: normal, clot or scab, and full burn-like features. Immunohistochemical staining for laminin layer integrity showed compromise over time. A marker for double-stranded DNA breaks, γ-H2AX, increased over plasma-exposure time. These findings identified a threshold for plasma exposure of up to 900s at low power and <120s at high power. Nonthermal FE-DBD plasma can be considered safe for future studies of external use under these threshold conditions for evaluation of sterilization, coagulation, and wound healing.


Asunto(s)
Gases em Plasma/uso terapéutico , Piel/fisiopatología , Heridas Penetrantes/fisiopatología , Heridas Penetrantes/terapia , Animales , Femenino , Histonas/metabolismo , Laminina/metabolismo , Modelos Animales , Proyectos Piloto , Piel/metabolismo , Porcinos , Factores de Tiempo , Resultado del Tratamiento , Cicatrización de Heridas/fisiología , Heridas Penetrantes/metabolismo
17.
Surgery ; 171(6): 1505-1511, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-34857383

RESUMEN

BACKGROUND: Significant disparities in surgical outcomes exist. It is imperative to prepare future doctors to eliminate disparities. Our team of senior medical students developed a surgical clerkship module examining equity in prostate cancer. Student attitudes before and after a facilitated teaching session were assessed. METHODS: A surgical equity pilot module was integrated into the core surgical clerkship starting in July 2020. This module was composed of (1) asynchronous preparatory material and (2) a synchronous interactive case discussion regarding disparities in prostate cancer. Discussion sessions were facilitated by upper-level medical students. Participants answered optional anonymous Likert-style and open-ended survey questions before and after the session. Pre- and post-responses were compared. RESULTS: One hundred and sixteen students completed the module between July 2020 and January 2021. Pre- and post-survey response rates were 66% and 29%, respectively. At baseline, almost all students (95%) agreed knowledge of disparities would make them a better physician. However, the majority (95%) described their general knowledge of surgical disparities as "nonexistent," "poor," or "average." Most students did not have a framework for assessing causes of surgical disparities (86%) and were not aware of interventions for reducing disparities (90%). After intervention, the majority rated their knowledge of surgical disparities as "good" or "excellent" (71%; P < .001). Most students indicated they had a framework 79%; P < .001) and were aware of effective interventions (62%; P < .001). CONCLUSION: We demonstrated a successful pilot of an equity-focused clerkship module. Student attitudes after a single session reflected significant improvement in knowledge of causes and interventions related to surgical disparities. Equity-focused teaching can be incorporated into the surgical clerkship.


Asunto(s)
Prácticas Clínicas , Educación de Pregrado en Medicina , Cirugía General , Equidad en Salud , Neoplasias de la Próstata , Estudiantes de Medicina , Cirugía General/educación , Humanos , Masculino , Enseñanza
18.
Antimicrob Agents Chemother ; 55(3): 1053-62, 2011 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21199923

RESUMEN

Oxidative stress leads to membrane lipid peroxidation, which yields products causing variable degrees of detrimental oxidative modifications in cells. Reactive oxygen species (ROS) are the key regulators in this process and induce lipid peroxidation in Escherichia coli. Application of nonthermal (cold) plasma is increasingly used for inactivation of surface contaminants. Recently, we reported a successful application of nonthermal plasma, using a floating-electrode dielectric-barrier discharge (FE-DBD) technique for rapid inactivation of bacterial contaminants in normal atmospheric air (S. G. Joshi et al., Am. J. Infect. Control 38:293-301, 2010). In the present report, we demonstrate that FE-DBD plasma-mediated inactivation involves membrane lipid peroxidation in E. coli. Dose-dependent ROS, such as singlet oxygen and hydrogen peroxide-like species generated during plasma-induced oxidative stress, were responsible for membrane lipid peroxidation, and ROS scavengers, such as α-tocopherol (vitamin E), were able to significantly inhibit the extent of lipid peroxidation and oxidative DNA damage. These findings indicate that this is a major mechanism involved in FE-DBD plasma-mediated inactivation of bacteria.


Asunto(s)
Desinfección/métodos , Electricidad , Escherichia coli/metabolismo , Peroxidación de Lípido , Lípidos de la Membrana/metabolismo , Daño del ADN , Especies Reactivas de Oxígeno/metabolismo
19.
Am Surg ; 77(2): 207-14, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-21337882

RESUMEN

As more therapies become available for the treatment of hepatocellular carcinoma (HCC), the management of patients with HCC is more complex, and the indications for the various therapeutic modalities are less clear. Although all of the treatment options have shown a certain efficacy in well-selected patient groups, their everyday use, especially in nonspecialized centers, is not always appropriate. We report our experience with 81 individuals who were diagnosed and treated in our institution between 2001 and 2007. Only patients who received transplants had good long-term outcomes, and we noted significant inconsistencies in the management of patients with similar stages of disease and degrees of cirrhosis. Despite recent progress, HCC still carries an overall dismal prognosis, making the optimization of the therapeutic plan mandatory to improve outcomes. We believe that a unified protocol, as well as the early involvement of the hepatology and transplant teams, can help physicians optimize the care of these patients.


Asunto(s)
Carcinoma Hepatocelular/cirugía , Protocolos Clínicos , Neoplasias Hepáticas/cirugía , Adulto , Carcinoma Hepatocelular/mortalidad , Ablación por Catéter , Femenino , Humanos , Estimación de Kaplan-Meier , Cirrosis Hepática/cirugía , Neoplasias Hepáticas/mortalidad , Trasplante de Hígado , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Resultado del Tratamiento
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