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1.
Pathog Dis ; 80(1)2022 07 21.
Artigo em Inglês | MEDLINE | ID: mdl-35713493

RESUMO

The success of mentoring derives from active and respectful listening and the willingness to learn and accept opportunities for personal growth. This shapes every trainee and their destined path in science, technology, engineering, and mathematics (STEM). The act of cultivating rapport, asking, and pondering meaningful questions, and receiving constructive feedback are critical to support a productive mentoring relationship. Successful mentoring in STEM can be established and allow mentees, especially underrepresented minorities (URMs), to flourish in an environment where they feel welcomed and supported. However, mentees from underrepresented groups often experience inadequate mentoring due to a mentor's lack of awareness, poor trainings themselves, or lack of understanding of the mentee's hardships. It is important for mentors and mentees to work together to promote diversity, equity, and inclusion (DEI) in STEM education through creativity, authenticity, and networking. We analyzed data obtained from students who attended a recent workshop that are interested in going to graduate school. Our results show that despite low initial expectations for the workshop, many students were satisfied in the knowledge they gleaned. The future and role of diversity in STEM within these underrepresented groups lies in community support and an important role that they can play in the lives of others through DEI initiatives and throughout their careers all of which involves positive mentoring.


Assuntos
Tutoria , Mentores , Humanos , Matemática , Tecnologia
2.
Am J Prev Med ; 63(2): 273-276, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35654661

RESUMO

INTRODUCTION: The COVID-19 pandemic has had a significant impact beyond physical morbidity and mortality. A mid-cycle Community Health Needs Assessment survey was administered in 1 community to generate data to evaluate change in community well-being since the beginning of the pandemic. METHODS: Surveys were mailed to 2,000 randomly selected residents in Olmsetd County, Minnesota. The surveys included the WHO Well-being Index (previously included in the 2018 Community Health Needs Assessment) and new subjective questions regarding behavior change. Changes in well-being were calculated using a propensity-matched cohort, and behavior change was reported as proportions of the whole. Data analysis was completed in 2021. RESULTS: Total survey respondents were 569 people in 2018 and 723 people in 2021. Well-being scores from the WHO Well-being Index showed a statistically significant decrease (score reduction of -8.44) from 2018 to 2021. All the 5 questions from the WHO Well-being Index also had an individual significant decrease; with the question regarding interest in life showing the greatest decrease. Individuals reported decreased subjective physical and mental well-being and increased substance use (alcohol, marijuana, and tobacco). Households also reported decreased household incomes and worse household finances since the start of the pandemic. CONCLUSIONS: Using the Community Health Needs Assessment infrastructure, 1 community was able to compare prepandemic with postpandemic data, which showed decreased well-being and increased substance use and financial stress. Other public health planners can similarly conduct interval surveys on the basis of their Community Health Needs Assessment questionnaires to tailor ongoing Community Health Improvement Plan programming to postpandemic needs and track community mental health and well-being recovery.


Assuntos
COVID-19 , Transtornos Relacionados ao Uso de Substâncias , COVID-19/epidemiologia , Humanos , Avaliação das Necessidades , Pandemias , Saúde Pública , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Inquéritos e Questionários
3.
J Robot Surg ; 16(3): 537-541, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34232449

RESUMO

To establish the economic value of simple robotic hysterectomy vs laparoscopic hysterectomy and assess the impact of surgeon's experience. Retrospective cohort study. University-affiliated US regional healthcare system. Reproductive and post-menopausal women undergoing hysterectomy for benign indications. Robotic or laparoscopic hysterectomy. Between January 2018 and December 2019, a total of 985 simple laparoscopic and robotic hysterectomies were performed by 47 different gynecologists. Overall, the mean payment, direct cost, and profit were comparable (p value > 0.05) among simple robotic and laparoscopic hysterectomy. However, the mean operative time was significantly shorter for robotic hysterectomy compared to laparoscopic hysterectomy (106 min vs 127 min, respectively, p < 0.05). Operative time decreased as a surgeon's annual robotic case volume increased. Per-minute profitability of robotic hysterectomy increased significantly when a surgeon performed greater than 45 cases annually (p = 0.04). This effect became most pronounced when a surgeon performed 60 or more cases per year (p = 0.01). Simple robotic hysterectomy has shorter operative time compared to laparoscopic hysterectomy, with direct costs being similar. Robotic hysterectomy has higher per-minute profit compared to laparoscopic hysterectomy when a surgeon performs > 45 cases per year.


Assuntos
Laparoscopia , Procedimentos Cirúrgicos Robóticos , Feminino , Humanos , Histerectomia , Duração da Cirurgia , Estudos Retrospectivos , Procedimentos Cirúrgicos Robóticos/métodos
5.
BMC Infect Dis ; 20(1): 38, 2020 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-31937247

RESUMO

BACKGROUND: Group B Streptococcal (GBS) infections in the United States are a leading cause of meningitis and sepsis in newborns. The CDC therefore recommends GBS screening for all pregnant women at 35-37 weeks of gestation and administration of intrapartum prophylaxis (in those that tested positive) as an effective means of controlling disease transmission. Several FDA approved molecular diagnostic tests are available for rapid and accurate detection of GBS in antepartum women. METHOD: In this study, we report a clinical comparison of the Xpert GBS LB assay and a novel FDA-cleared test, Revogene GBS LB assay. A total of 250 vaginal-rectal swabs from women undergoing prenatal screening were submitted to the University of Wisconsin's clinical microbiology laboratory for GBS testing. RESULTS: We found 96.8% of samples were concordant between the two tests, while 3.2% were discordant with a positive percent agreement of 98.0% and a negative percent agreement of 96.5% between the Revogene GBS LB assay and the GeneXpert GBS LB assay. CONCLUSION: Overall, we report that both assays perform well for the detection of GBS colonization in pregnant women.


Assuntos
Testes Diagnósticos de Rotina/métodos , Programas de Rastreamento/métodos , Técnicas de Diagnóstico Molecular/métodos , Complicações Infecciosas na Gravidez/diagnóstico , Diagnóstico Pré-Natal/métodos , Infecções Estreptocócicas/diagnóstico , Streptococcus agalactiae/genética , DNA Viral/análise , Feminino , Técnicas Genéticas , Humanos , Transmissão Vertical de Doenças Infecciosas/prevenção & controle , Programas de Rastreamento/economia , Técnicas de Diagnóstico Molecular/economia , Gravidez , Complicações Infecciosas na Gravidez/virologia , Gestantes , Infecções Estreptocócicas/virologia , Fatores de Tempo , Vagina/virologia
6.
World Neurosurg ; 135: e623-e628, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31874294

RESUMO

OBJECTIVE: In ventriculoperitoneal shunt (VPS) placement, distal placement of the peritoneal catheter will typically be performed by a neurosurgeon. More recently, laparoscopic-assisted (LA) placement of the distal peritoneal catheter by general surgeons has become common. The present study examined whether LA placement of a VPS (LAVPS) is associated with a reduced operative time, lower hospital costs, and fewer distal revisions. METHODS: A retrospective review was performed of the data from all patients who had received a new VPS at our institution from 2013 to 2016. Age, sex, diagnosis, previous abdominal surgery, operative time, anesthesia grade, incidence of 30-day shunt failure, and total hospital charges were analyzed. RESULTS: A total of 680 patients had undergone first-time VPS placement, including 199 with LAVPS and 481 with non-LAVPS placement (non-LAVPS). The mean age of the LAVPS patients was significantly older than that of the non-LAVPS patients (64.1 vs. 59.3 years; P = 0.002). The mean operative time was shorter in the LAVPS group than in the non-LAVPS group (55 vs. 75 minutes; P < 0.001). Distal shunt revision within 30 days occurred more often for the non-LAVPS patients (6 of 481 [1.2%]) than for the LAVPS patients (0 of 199 [0%]). A subset analysis of patients with normal-pressure hydrocephalus found decreased total hospital charges in the LAVPS group ($67,124 vs. $80,890; P = 0.009). CONCLUSIONS: Compared with non-LAVPS, LAVPS was associated with significantly shorter operative times and fewer distal shunt revisions within 30 days. The findings from a subset analysis supported a decrease in total hospital charges. Additional studies are needed; however, these data suggest that LAVPS is a safer, less-expensive alternative to non-LAVPS.


Assuntos
Hidrocefalia de Pressão Normal/cirurgia , Laparoscopia/métodos , Derivação Ventriculoperitoneal/métodos , Falha de Equipamento , Feminino , Preços Hospitalares , Humanos , Hidrocefalia de Pressão Normal/economia , Laparoscopia/economia , Masculino , Pessoa de Meia-Idade , Duração da Cirurgia , Reoperação/estatística & dados numéricos , Estudos Retrospectivos , Derivação Ventriculoperitoneal/economia
8.
J Clin Virol ; 91: 69-72, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28461133

RESUMO

BACKGROUND: Updated recommendations for HIV diagnostic laboratory testing published by the Centers for Disease Control and Prevention and the Association of Public Health Laboratories incorporate 4th generation HIV immunoassays, which are capable of identifying HIV infection prior to seroconversion. OBJECTIVES: The purpose of this study was to compare turnaround time and cost between 3rd and 4th generation HIV immunoassay-based testing algorithms for initially reactive results. STUDY DESIGN: The clinical microbiology laboratory database at Mayo Clinic, Rochester, MN was queried for 3rd generation (from November 2012 to May 2014) and 4th generation (from May 2014 to November 2015) HIV immunoassay results. All results from downstream supplemental testing were recorded. Turnaround time (defined as the time of initial sample receipt in the laboratory to the time the final supplemental test in the algorithm was resulted) and cost (based on 2016 Medicare reimbursement rates) were assessed. RESULTS: A total of 76,454 and 78,998 initial tests were performed during the study period using the 3rd generation and 4th generation HIV immunoassays, respectively. There were 516 (0.7%) and 581 (0.7%) total initially reactive results, respectively. Of these, 304 (58.9%) and 457 (78.7%) were positive by supplemental testing. There were 10 (0.01%) cases of acute HIV infection identified with the 4th generation algorithm. The most frequent tests performed to confirm an HIV-positive case using the 3rd generation algorithm, which were reactive initial immunoassay and positive HIV-1 Western blot, took a median time of 1.1 days to complete at a cost of $45.00. In contrast, the most frequent tests performed to confirm an HIV-positive case using the 4th generation algorithm, which included a reactive initial immunoassay and positive HIV-1/-2 antibody differentiation immunoassay for HIV-1, took a median time of 0.4 days and cost $63.25. Overall median turnaround time was 2.2 and 1.5 days, and overall median cost was $63.90 and $72.50 for 3rd and 4th generation algorithms, respectively. CONCLUSIONS: Both 3rd and 4th generation HIV immunoassays had similar total numbers of tests performed and positivity rates during the study period. A greater proportion of reactive 4th generation immunoassays were confirmed to be positive, and the 4th generation algorithm identified several cases of acute HIV infection that would have been missed by the 3rd generation algorithm. The 4th generation algorithm had a more rapid turnaround time but higher cost for confirmed positive HIV infections and overall, compared to the 3rd generation algorithm.


Assuntos
Sorodiagnóstico da AIDS , Algoritmos , Infecções por HIV/diagnóstico , Imunoensaio , Sorodiagnóstico da AIDS/economia , Centers for Disease Control and Prevention, U.S. , Custos e Análise de Custo , Anticorpos Anti-HIV/sangue , Infecções por HIV/economia , Infecções por HIV/virologia , HIV-1/genética , HIV-1/imunologia , HIV-2/genética , HIV-2/imunologia , Humanos , Imunoensaio/economia , Imunoensaio/métodos , Programas de Rastreamento/economia , Programas de Rastreamento/legislação & jurisprudência , Programas de Rastreamento/métodos , Técnicas de Amplificação de Ácido Nucleico/economia , Técnicas de Amplificação de Ácido Nucleico/métodos , Sensibilidade e Especificidade , Estados Unidos , Adulto Jovem
9.
Am J Gastroenterol ; 111(5): 649-57, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-27002802

RESUMO

OBJECTIVES: We sought to characterize the relationship between hospital inpatient racial diversity and outcomes for African-American patients including rates of major complications or mortality during hospitalization for five common gastrointestinal diagnoses. METHODS: Using the 2012 National Inpatient Sample database, hospital inpatient racial diversity was defined as the percentage of African-American patients discharged from each hospital. Logistic regression was used to predict major complication rates or death, long length of stay, and high total charges. Control variables included age, gender, payer type, patient location, area-associated income quartile, hospital characteristics including size, urban vs. rural, teaching vs. nonteaching, region, and the interaction of the percentage of African Americans with patient race. RESULTS: There were 848,395 discharges across 3,392 hospitals. The patient population was on average 27% minority (s.d.±21%) with African Americans accounting for 14% of all patients. Overall, African-American patients had higher rates of major complications or death relative to white patients (adjusted odds ratio (aOR) 1.19; 95% confidence interval (CI) 1.16-1.23). However, when treated in hospitals with higher patient racial diversity, African-American patients experienced significantly lower rates of major complications or mortality (aOR 0.80; 95% CI 0.74-0.86). CONCLUSIONS: African Americans have better outcomes for five common gastrointestinal diagnoses when treated in hospitals with higher inpatient racial diversity. This has major ramifications on total hospital charges.


Assuntos
Negro ou Afro-Americano/estatística & dados numéricos , Diversidade Cultural , Gastroenteropatias/etnologia , Hospitalização/estatística & dados numéricos , População Branca/estatística & dados numéricos , Adulto , Idoso , Feminino , Gastroenteropatias/complicações , Gastroenteropatias/mortalidade , Preços Hospitalares , Mortalidade Hospitalar , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Fatores Socioeconômicos , Resultado do Tratamento , Estados Unidos
10.
Dig Dis Sci ; 61(6): 1669-76, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26738737

RESUMO

BACKGROUND: Colorectal stents are increasingly employed as a bridge to surgery or for palliative relief of malignant large bowel obstruction. AIM: To explore determinants of inpatient colorectal stent utilization (CRSU). METHODS: An analysis of the 2012 National Inpatient Sample was performed. International Classification of Diseases, 9th revision, codes were used to identify discharges associated with CRSU and patient/hospital factors for inclusion in a logistic regression model. RESULTS: We identified 217,055 inpatient colonoscopies, approximating 1.1 million inpatient colonoscopies nationwide. Colorectal stents were placed in 1.4 % of all procedures. Across all racial groups, Medicare was the most common payer. Patients with commercial insurance had lower CRSU compared with Medicare patients [adjusted odds ratio (OR) 0.83, 95 % confidence interval (CI) 0.75-0.92]. No gender disparities were identified (OR 0.96, 95 % CI 0.89-1.03). In addition, no racial differences in CRSU existed between Caucasians versus African-Americans (OR 0.94, 95 % CI 0.83-1.06) and Caucasians versus Hispanics (OR 0.96, 95 % CI 0.83-1.1). Compared with patients living in less affluent neighborhoods, those residing in more affluent areas had higher CRSU (OR 1.65, 95 % CI 1.46-1.86). This displayed a linear relationship with the odds of CRSU increasing as household income increased. Less affluent patients also had the highest total charges and longest wait time to CRSU. CRSU was highest among patients treated in larger medical centers (OR 1.7, 95 % CI 1.51-1.93) and teaching hospitals (OR 3.9, 95 % CI 3.2-4.8). CONCLUSION: Individuals from less affluent neighborhoods have lower colorectal stent utilization. This disparity is independent of race and likely related to poorer access to healthcare resources.


Assuntos
Neoplasias Colorretais/complicações , Neoplasias Colorretais/terapia , Stents/economia , Idoso , Bases de Dados Factuais , Feminino , Acessibilidade aos Serviços de Saúde/economia , Humanos , Seguro Saúde , Masculino , Pessoa de Meia-Idade , Grupos Raciais , Estudos Retrospectivos , Fatores Socioeconômicos , Estados Unidos
11.
Forensic Sci Int ; 226(1-3): 46-53, 2013 Mar 10.
Artigo em Inglês | MEDLINE | ID: mdl-23291147

RESUMO

This study assesses the interpretive value of cocaine, benzoylecgonine (BZE) and cocaethylene (COET) in skeletal muscle (rectus femoris) in cocaine-using decedents. The distribution of these analytes in cardiac muscle (CM), vitreous humour (VH), femoral blood (FB) and cardiac blood (CB) is also reported. In rectus femoris muscle, the spatial distribution of the analytes was examined across the whole rectus femoris muscle collected from seven fatalities in which cocaine was detected. In six of these cases, death was attributed to trauma and in one case the cause of death was undetermined but suspected to be drug related. In two additional cases analytes were detected in the blood and/or VH but not in the muscle. The muscle was sectioned into 12-15 approximately equal segments, each of which was analysed after homogenisation. Tissue and bio-fluid samples were extracted by solid phase extraction with confirmation and quantification by GC-ion trap-MS/MS. No significant variation was observed in the concentration of any analyte throughout the muscle in the 7 cases analysed. The results reported here are in contrast to a previous study in which great variation in the concentration of some basic drugs (mainly tricyclic antidepressants and benzodiazepines) was observed throughout the thigh muscle bulk (Williams and Pounder, 1997). Analyte concentrations in skeletal muscle (SM) correlated well with those in FB (p<0.01). In general, the concentration of cocaine and COET followed the order VH > CM > SM > FB ≥ CB. Cocaine concentrations measured in VH were significantly higher than in blood and muscle. Inter-matrix variations in the concentrations of BZE and COET were less marked. The concentration of BZE exceeded that of cocaine in all matrices and in all cases except one where the time between death and drug intake was suspected to be short. In this case, the cocaine to BZE ratio measured in SM (2.66), CM (2.91) and VH (2.19) was higher than that measured in FB (0.97). Given that the concentrations of cocaine and its metabolites were uniformly distributed throughout the muscle and considering the good correlation observed between muscle and blood, muscle could be of interpretive value in cocaine related deaths. Further, since cocaine is known to have greater post-mortem stability in muscle than blood, concentrations measured in muscle may reflect more closely those at the time of death and might be of particular value in cases with an extended period between death and tissue sampling.


Assuntos
Transtornos Relacionados ao Uso de Cocaína/diagnóstico , Cocaína/análise , Entorpecentes/análise , Músculo Quadríceps/química , Adolescente , Adulto , Cocaína/análogos & derivados , Toxicologia Forense , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Masculino , Miocárdio/química , Detecção do Abuso de Substâncias/métodos , Corpo Vítreo/química , Adulto Jovem
12.
Tenn Med ; 105(8): 49-51, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22978152

RESUMO

The factors associated with the cost of intellectual and developmental disabilities are the prevalence of pervasive developmental disorders, limited access to specialized services, the high cost of prescription medication, strained relationships with providers, and not enough latitude when it comes to selection of services. These factors work together to create an environment that is either conducive to or prohibitive of quality patient outcomes and improved perceptions of publicly-provided health care. Improving any of these factors would undoubtedly lower the overall annual cost. However, more research is required to understand how these factors affect both cost and perceptions. The factors addressed in this paper are the difference between mental healthcare and general healthcare; the prevalence of intellectual and developmental disabilities; the sociological impact of Medicaid services; out-of-pocket expenses; use of specialized mental health services; access to specialized services; and patients' relationship with providers.


Assuntos
Deficiências do Desenvolvimento/economia , Deficiência Intelectual/economia , Serviços de Saúde Mental , Efeitos Psicossociais da Doença , Custos e Análise de Custo , Acessibilidade aos Serviços de Saúde/economia , Humanos , Medicaid/economia , Serviços de Saúde Mental/economia , Estados Unidos
13.
J Health Care Poor Underserved ; 21(1 Suppl): 127-47, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20173289

RESUMO

Higher risk for prostate cancer (PCa) among African Americans is partly associated with exposure to dietary fatty-acids, the carcinogenic effects of which remain controversial. Odds ratio of PCa risk was determined by unconditional logistic regression comparing highest with lowest quartiles of plasma fatty-acids in a case-control design. Mean age for 173 African Americans and 340 Nigerians was 56.9 +/- 9.8 and 60.1 +/- 14.0, p<.006, median (25th, 75th percentile) plasma fatty-acid was 2598 (2306, 3035) microg/ml and 2420 (2064, 2795) microg/ml, p<.001, with 48 (27.7%) and 66 (19.4%) PCa cases, respectively. African Americans recorded higher total, omega-6, and trans, but lower saturated and omega-3 fatty-acids, with non-significant PCa risk association for total, omega-6 and trans fatty acids. Positive PCa risk trend was observed in both populations with nervonic, erucic, and arachidonic acids, with docosahexaenoic acid (DHA) among African Americans, and with behenic and stearic acids in Nigerians. Non-significant negative PCa risk trend was observed with ecosapentaenoic acid (EPA) in Nigerians only. These preliminary findings need to be further explored in a larger study that will include risk analysis of fatty-acid ratios to clarify their combined impact on PCa risk.


Assuntos
População Negra/estatística & dados numéricos , Negro ou Afro-Americano/estatística & dados numéricos , Ácidos Graxos/sangue , Disparidades nos Níveis de Saúde , Neoplasias da Próstata/etnologia , Idoso , Estudos de Casos e Controles , Gorduras na Dieta , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Nigéria , Razão de Chances , Seleção de Pacientes , Projetos Piloto , Neoplasias da Próstata/sangue , Medição de Risco , Estados Unidos
14.
J La State Med Soc ; 157(2): 112-5, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16022278

RESUMO

BACKGROUND: Appropriate smoking cessation techniques, including counseling patients to stop smoking, could prevent multiple health-related problems. Identification of relevant factors in patients that smoke may be beneficial in targeting smoking cessation efforts. This investigation explores various factors associated with smoking cessation, specifically in women. METHODS: All women (n = 675) presenting to a breast health center over a one year period were surveyed regarding their tobacco use. Any association between smoking cessation and various factors was determined by multivariate analysis. RESULTS: Our population consisted of 47% African American women, 43% Caucasian women, and 10% women of other ethnicities. Sixty percent of all women never smoked. Of the women who had smoked, 57% quit. Except for alcohol use and exercise, no factor, including ethnicity, was associated with never smoking. Smoking cessation was associated with being married, being Caucasian, not using alcohol, and exercising. However, only Caucasian race and marriage were independently associated with smoking cessation. DISCUSSION: In our population, African American women had a lower proportion of smoking cessation than Caucasian women. In patients with similar access to care, specifically preventive care, there are ethnic and social differences in smoking cessation.


Assuntos
Negro ou Afro-Americano/estatística & dados numéricos , Abandono do Hábito de Fumar/estatística & dados numéricos , Prevenção do Hábito de Fumar , Fumar/epidemiologia , População Branca/estatística & dados numéricos , Adulto , Distribuição por Idade , Análise de Variância , Atitude Frente a Saúde , Distribuição de Qui-Quadrado , Feminino , Educação em Saúde/organização & administração , Inquéritos Epidemiológicos , Humanos , Incidência , Louisiana/epidemiologia , Pessoa de Meia-Idade , Análise Multivariada , Probabilidade , Medição de Risco , Inquéritos e Questionários
15.
Anaesthesia ; 55(10): 953-9, 2000 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11012489

RESUMO

We investigated the performance of a closed-loop system for administration of general anaesthesia, using the bispectral index as a target for control. One hundred patients undergoing gynaecological or general surgery were studied. In 60 patients, anaesthesia was maintained by intravenous infusion of a propofol/alfentanil mixture. In 40, an isoflurane/nitrous oxide based technique was used. For each technique, patients were randomly allocated to receive either closed-loop or manually controlled administration of the relevant agents (propofol/alfentanil or isoflurane), with an intra-operative target bispectral index of 50 in all cases. Closed-loop and manually controlled administration of anaesthesia resulted in similar intra-operative conditions and initial recovery characteristics. During maintenance of anaesthesia, cardiovascular and electro-encephalographic variables did not differ between closed-loop and manual control groups and deviation of bispectral index from the target value was similar. Intra-operative concentrations of propofol, alfentanil and isoflurane were within normal clinical ranges. Episodes of light anaesthesia were more common in the closed-loop group for patients receiving propofol/alfentanil anaesthesia and in the manual group for patients receiving isoflurane/nitrous oxide anaesthesia. Convenience aside, the closed-loop system showed no clinical advantage over conventional, manually adjusted techniques of anaesthetic administration.


Assuntos
Anestesia com Circuito Fechado/métodos , Anestesia Intravenosa/métodos , Sistemas de Liberação de Medicamentos , Eletroencefalografia/efeitos dos fármacos , Monitorização Intraoperatória/métodos , Adulto , Alfentanil/administração & dosagem , Anestésicos Combinados/administração & dosagem , Anestésicos Inalatórios/administração & dosagem , Anestésicos Intravenosos/administração & dosagem , Esquema de Medicação , Retroalimentação , Feminino , Humanos , Isoflurano/administração & dosagem , Pessoa de Meia-Idade , Óxido Nitroso/administração & dosagem , Propofol/administração & dosagem
16.
Breast J ; 6(4): 263-266, 2000 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11348376

RESUMO

The American Cancer Society has recommended monthly breast self-examinations (BSEs) to aid in the early detection of breast cancer. Compliance with BSE recommendations has been shown to be decreased in certain ethnic groups. This investigation evaluates relevant variables involved in BSE compliance in an urban breast cancer screening center. A survey over a 1-year period (June 1996-June 1997) was given to all patients on their initial visit to the Breast Health Center at Tulane University Medical Center. Demographic and socioeconomic factors associated with the compliance of BSE were explored. The overall rate of BSE was relatively high at 80%. There was no difference between ethnic groups in rates of BSE (Caucasians 21% versus African Americans 20%). Statistically significant variables associated with BSE noncompliance were high school education (did not complete high school 16% versus completed high school 33%; p < 0.0004), employment status (employed 16% versus unemployed 31%; p < 0.0004), and marital status (married 15% versus single/divorced 22%; p < 0.05). While the majority of women in our study practiced BSE and ethnicity did not predict BSE, several socioeconomic factors were predictive of BSE compliance. Efforts to increase community outreach to lower socioeconomic patients as well as efforts to ensure proficient BSE techniques by patients may help detect early breast cancer.

17.
Structure ; 3(1): 79-85, 1995 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-7743134

RESUMO

BACKGROUND: Streptococcal protein G and staphylococcal protein A are bacterial antibody-binding proteins, widely used as immunological tools, whose antibody-binding domains are structurally quite different. The binding of protein G to Fc fragments is competitive with respect to protein A, suggesting that the binding sites for protein A and protein G on Fc overlap, notwithstanding the fact that they lack sequence or structural similarity. RESULTS: To resolve this issue, the residues involved in the interaction between an IgG-binding domain of protein G (domain II) and the Fc fragment of mouse IgG2a have been identified by use of 13C and 15N NMR. Binding of protein G domain II selectively perturbed resonances from residues between the CH2 and CH3 domains of Fc, whereas in domain II the residues affected are primarily those on the alpha-helix and the third strand of the beta-sheet. This information was used, together with the structures of the two uncomplexed proteins, to construct a model of the complex, using Monte Carlo minimization techniques. In this model, the alpha-helix of protein G lies in the same position as helix 1 of protein A in the crystal structure of the protein A:Fc complex, but its orientation differs from the latter by 180 degrees. CONCLUSIONS: The interactions of the bacterial antibody-binding proteins with their 'target' immunoglobulins involve a very versatile set of protein-protein interactions. First, the IgG-binding domains of protein A and protein G have quite different three-dimensional structures, but bind to sites on the Fc fragment that overlap extensively. Secondly, protein G employs two quite different regions of its surface to bind to the Fab and Fc regions of IgG.


Assuntos
Proteínas de Bactérias/química , Fragmentos Fc das Imunoglobulinas/química , Modelos Moleculares , Estrutura Secundária de Proteína , Antígenos de Bactérias/química , Proteínas de Bactérias/metabolismo , Sítios de Ligação , Fragmentos Fc das Imunoglobulinas/metabolismo , Espectroscopia de Ressonância Magnética , Método de Monte Carlo , Soluções , Proteína Estafilocócica A/química , Staphylococcus , Streptococcus
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