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1.
Ir J Med Sci ; 173(2): 93-5, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15540711

RESUMO

BACKGROUND: The granting of a licence to Levonelle as an emergency hormonal contraceptive in the Republic of Ireland may require accident and emergency (A&E) departments to formally provide such a service. This article outlines the experiences of a Northern Ireland A&E unit. AIMS: To examine the pattern of attendance of patients requesting emergency contraception at an A&E department and to assess if adequate standards of care are achieved. METHOD: Retrospective case note review of 100 patients attending the A&E department requesting emergency contraception. RESULTS: Sixty-one per cent of requests for emergency contraception were outside normal pharmacy opening hours. Seventy-seven per cent of these patients were less than 26 years old. Most (63%) attended within 24 hours of unprotected sexual intercourse. Forty-three per cent of the patients studied had used no contraception prior to this request. Recording of menstrual details and sexual behaviour as part of the consultation was variable. CONCLUSIONS: A&E departments receive requests for emergency hormonal contraception particularly from younger women (<25 years). A&E staff must have appropriate training and support to manage these consultations effectively.


Assuntos
Anticoncepcionais Pós-Coito/administração & dosagem , Serviço Hospitalar de Emergência/normas , Levanogestrel/administração & dosagem , Adolescente , Adulto , Anticoncepcionais Pós-Coito/provisão & distribuição , Prescrições de Medicamentos , Serviço Hospitalar de Emergência/estatística & dados numéricos , Feminino , Humanos , Levanogestrel/provisão & distribuição , Licenciamento em Farmácia , Pessoa de Meia-Idade , Irlanda do Norte , Estudos Retrospectivos , Fatores de Tempo , Sexo sem Proteção
2.
Ulster Med J ; 73(1): 16-9, 2004 May.
Artigo em Inglês | MEDLINE | ID: mdl-15244120

RESUMO

The aim of this study was to examine the pattern of attendance of patients requesting Emergency Hormonal Contraception (EHC) at an accident and emergency department before and after a government driven change in legislation, which allowed EHC to be sold over-the-counter by trained pharmacists, to women aged 16 years and above. We employed retrospective comparative study using computer records of all accident and emergency attendances coded as requests for emergency contraception for the years 2000 and 2001. The number of patients requesting emergency contraception at the A&E department decreased after over-the-counter sales were introduced, from 196 in the year 2000 to 164 in 2001 (p = 0.037). Despite this, the number of teenagers requesting emergency contraception at the A&E department increased in 2001--from 63 in 2000 to 74 in 2001 (p = 0.0115). Most requests are received outside local pharmacy opening hours--63.77% in 2000 and 62.2% in 2001. This study raises concerns that the government initiative allowing emergency hormonal contraception to be sold in pharmacies is having little impact on teenagers most in need of this service. A&E departments can expect to continue to receive a significant number of requests for emergency contraception. Further measures will be required to reduce the U.K.'s high rate of unplanned pregnancies.


Assuntos
Anticoncepcionais Pós-Coito , Necessidades e Demandas de Serviços de Saúde/estatística & dados numéricos , Legislação de Medicamentos , Adolescente , Adulto , Serviço Hospitalar de Emergência , Feminino , Humanos , Pessoa de Meia-Idade , Medicamentos sem Prescrição , Estudos Retrospectivos , Reino Unido
4.
J Infect Dis ; 184(11): 1465-9, 2001 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-11709791

RESUMO

Human immunodeficiency virus type 1 (HIV-1)-specific memory, or precursor, cytotoxic T lymphocytes (CTL) in 14 subjects who had recently experienced seroconversion were evaluated with respect to virus set point, defined as plasma HIV-1 RNA level 6 months after seroconversion. Env-, Gag-, Pol-, and Nef-specific precursor CTL were detected in (51)Cr-release assays, using antigen-stimulated peripheral blood mononuclear cells as effectors and B cell lines infected with HIV-1-vaccinia recombinants as targets. All subjects tested had precursor CTL specific to at least 2 HIV-1 antigens. Detection of Env-specific precursor CTL was associated with a high set point (P=.0221). The number of antigens recognized tended to be greater in subjects with higher set points (rho=.45621; P=.1171). Gag-specific precursor CTL frequency correlated inversely with set point (rho=-.8478; P=.0003). Two heterozygotes for a 32-bp deletion in CCR5 had the lowest set points (P=.0220) and highest Gag precursor CTL frequencies (P=.0128). These data suggest that host factors that restrict viral replication may be important determinants of the level of HIV-1-specific precursor CTL.


Assuntos
Soropositividade para HIV/imunologia , Soropositividade para HIV/virologia , HIV-1/imunologia , Memória Imunológica , Linfócitos T Citotóxicos/imunologia , Síndrome da Imunodeficiência Adquirida/imunologia , Linhagem Celular , Células Cultivadas , Testes Imunológicos de Citotoxicidade , Progressão da Doença , Genótipo , Antígenos HIV/imunologia , Proteína do Núcleo p24 do HIV/imunologia , HIV-1/genética , HIV-1/isolamento & purificação , Humanos , Masculino , RNA Viral/sangue , Receptores CCR5/genética , Carga Viral
5.
Stat Med ; 20(16): 2489-504, 2001 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-11512138

RESUMO

CD4+ lymphocyte count and HIV RNA plasma viral load are longitudinally monitored in patients with HIV infection. Because data collection intervals may be unequally spaced and these markers experience high within-patient variability, they may be smoothed before use in subsequent models. Estimation strategies must be able to accommodate the drastic changes in viral load which may occur when an individual's treatment strategy is updated. Because these treatment changes are not regimented, these dynamics cannot be modelled using standard methods. We propose univariate and bivariate cubic smoothing splines to fit CD4+ count and viral load over time. The method is developed using state space equations, and the Kalman filter is used to calculate the log-likelihood. Non-linear optimization is used to obtain the maximum likelihood estimates. A modification of the Kalman filter allows non-informative or diffuse priors at the initial observation. Since treatment changes are expected to alter the shape of the curve, we further extend the Kalman filter to permit greater flexibility in the smoothing spline at these time points. The method produces smoothed estimates of the viral load and CD4+ count curves over time.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Interpretação Estatística de Dados , Monitoramento de Medicamentos/métodos , Infecções por HIV/tratamento farmacológico , Análise Multivariada , Análise Numérica Assistida por Computador , Teorema de Bayes , Viés , Biomarcadores , Contagem de Linfócito CD4 , Previsões , Infecções por HIV/imunologia , Infecções por HIV/virologia , Humanos , Funções Verossimilhança , Estudos Longitudinais , Dinâmica não Linear , Fatores de Tempo , Resultado do Tratamento , Carga Viral
6.
Med Sci Sports Exerc ; 33(8): 1259-64, 2001 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11474324

RESUMO

PURPOSE: To compare the changes in plasma glucose and insulin levels in response to 1 h of exercise performed at 60% of VO(2peak) either in the fasted state or 2 h after a standardized breakfast in subjects with type 2 diabetes. METHODS: Ten sedentary men with type 2 diabetes treated with oral agents and not under strict metabolic control were tested on two occasions (fasted and fed state) in a random order at a 1-wk interval. RESULTS: Plasma glucose was slightly but not significantly higher at the beginning of exercise performed in the fed state versus the fasted state (12.4 +/- 1.3 vs 11.1 +/- 1.1 mmol x L(-1) respectively; mean +/- SE, P = 0.06). However, after exercise, plasma glucose levels were much lower in the fed state (7.6 +/- 1.1 mmol x L(-1)) compared with the fasted state (10.0 +/- 1.0 mmol x L(-1); P = 0.009). Insulin levels were higher at the beginning of the exercise bout performed in the fed state (177 +/- 26 vs 108 +/- 19 pmol x L(-1); P < 0.05) and during exercise. Similar respiratory exchange ratio at identical workload indicated that the difference in glycemic response was not due to differences in whole body substrate utilization. Plasma concentrations of free fatty acids, glucagon, epinephrine, and norepinephrine were also similar during both experiments. CONCLUSIONS: One hour of aerobic exercise has a minimal impact on plasma glucose level when performed in fasted moderately hyperglycemic men with type 2 diabetes but induces an important decrease in plasma glucose level when performed 2 h after breakfast. Because glucose utilization increased similarly during exercise in both conditions, the higher insulin levels after the meal might have blunted glucose production, creating an imbalance between total glucose production and total peripheral utilization in the fed state in contrast to the fasted state.


Assuntos
Glicemia/análise , Diabetes Mellitus Tipo 2/terapia , Exercício Físico/fisiologia , Hipoglicemiantes/sangue , Insulina/sangue , Humanos , Hiperglicemia , Masculino , Pessoa de Meia-Idade , Consumo de Oxigênio , Período Pós-Prandial
7.
Ann Thorac Surg ; 72(6): 2026-32, 2001 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11789788

RESUMO

BACKGROUND: There are limited data to help clinicians identify patients likely to have an improvement in quality of life following CABG surgery. We evaluated the relationship between preoperative health status and changes in quality of life following CABG surgery. METHODS: We evaluated 1,744 patients enrolled in the VA Cooperative Processes, Structures, and Outcomes in Cardiac Surgery study who completed preoperative and 6-month postoperative Short Form-36 (SF-36) surveys. The primary outcome was change in the Mental Component Summary (MCS) and Physical Component Summary (PCS) scores from the SF-36. RESULTS: On average, physical and mental health status improved following the operation. Preoperative health status was the major determinant of change in quality of life following surgery, independent of anginal burden and other clinical characteristics. Patients with MCS scores less than 44 or PCS scores less than 38 were most likely to have an improvement in quality of life. Patients with higher preoperative scores were unlikely to have an improvement in quality of life. CONCLUSIONS: Patients with preoperative health status deficits are likely to have an improvement in their quality of life following CABG surgery. Alternatively, patients with relatively good preoperative health status are unlikely to have a quality of life benefit from surgery and the operation should primarily be performed to improve survival.


Assuntos
Angina Pectoris/cirurgia , Ponte de Artéria Coronária/psicologia , Complicações Pós-Operatórias/psicologia , Qualidade de Vida , Atividades Cotidianas/psicologia , Idoso , Angina Pectoris/psicologia , Feminino , Nível de Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Papel do Doente , Resultado do Tratamento
8.
AIDS ; 14(14): 2109-16, 2000 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-11061651

RESUMO

OBJECTIVE: To determine the relationship between human herpesvirus 8 (HHV-8 or Kaposi's sarcoma-associated herpesvirus) peripheral blood virus load and Kaposi's sarcoma (KS) clinical stage. DESIGN: Blinded, cross-sectional analysis of peripheral blood HHV-8 DNA levels in persons with AIDS-related KS in Harare, Zimbabwe. METHODS: Subjects were stratified by KS clinical stage. The amount of HHV-8 DNA in plasma and peripheral blood mononuclear cells (PBMC) was determined by quantitative real-time PCR amplification of the HHV-8 open reading frame 26. RESULTS: Thirty-one HIV-1/HHV-8-coinfected persons were studied: 26 subjects had histologically confirmed KS (one stage II, 11 stage III and 14 stage IV) and five subjects had antibodies to HHV-8 but did not have KS. The age, CD4 lymphocyte count and plasma HIV-1 RNA levels were similar in all groups. HHV-8 DNA was detected in the plasma of all HHV-8-infected subjects (range < 2.4 to 5.2 log10 copies/ml), but plasma HHV-8 DNA levels were not associated with KS disease stage. In contrast, the amount of HHV-8 DNA in PBMC (range < 0.7 to 4.5 log10 copies/microg) was strongly associated with KS clinical stage (P = 0.005). Among stage IV KS cases, there was a linear relationship between plasma and PBMC HHV-8 DNA levels (r2 = 0.42; P = 0.01). CONCLUSION: The strong association observed between the extent of KS disease and the levels of HHV-8 DNA in PBMC provides further evidence for a relationship between HHV-8 virus load and KS pathogenesis.


Assuntos
Infecções por HIV/virologia , HIV-1 , Herpesvirus Humano 8/isolamento & purificação , Sarcoma de Kaposi/virologia , Adulto , Estudos Transversais , DNA Viral/análise , Feminino , Infecções por HIV/complicações , Herpesvirus Humano 8/genética , Humanos , Leucócitos Mononucleares/virologia , Masculino , Pessoa de Meia-Idade , Sarcoma de Kaposi/etiologia , Carga Viral , Replicação Viral , Zimbábue
9.
Ann Thorac Surg ; 70(3): 702-10, 2000 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11016297

RESUMO

BACKGROUND: In this study we explored different risk model options to provide clinicians with predictions for resource utilization. The hypotheses were that predictors of mortality are not predictive of resource consumption, and that there is a correlation between cost estimates derived using a cost-to-charge ratio or a product-line costing approach. METHODS: From March 1992 to June 1995, 2,481 University of Colorado Hospital patients admitted for ischemic heart disease were classified by diagnosis-related group code as having undergone or experienced coronary bypass procedures (CBP), percutaneous cardiovascular procedures (PCVP), acute myocardial infarction (AMI), and other cardiac-related discharges (Other). For each diagnosis-related group, Cox proportional hazards models were developed to determine predictors of cost, charges, and length of stay. RESULTS: The diagnosis groups differed in the clinical factors that predicted resource use. As the two costing methods were highly correlated, either approach may be used to assess relative resource consumption provided costs are reconciled to audited financial statements. CONCLUSIONS: To develop valid prediction models for costs of care, the clinical risk factors that are traditionally used to predict risk-adjusted mortality may need to be expanded.


Assuntos
Custos e Análise de Custo , Honorários e Preços , Tempo de Internação , Isquemia Miocárdica/economia , Idoso , Colorado , Grupos Diagnósticos Relacionados , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Modelos Teóricos , Isquemia Miocárdica/mortalidade , Isquemia Miocárdica/terapia , Fatores de Risco , Índice de Gravidade de Doença
10.
Am J Kidney Dis ; 35(6): 1127-34, 2000 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10845827

RESUMO

The present study was performed to ascertain whether the presence of mild renal failure (defined as a serum creatinine concentration of 1. 5 to 3.0 mg/dL) is an independent risk factor for adverse outcome after cardiac valve surgery. An extensive set of preoperative and postoperative data was collected in 834 prospectively evaluated patients undergoing cardiac valve surgery at 14 Veterans Affairs Medical Centers. Univariate and multivariable analyses were performed to determine whether an independent association of mild renal dysfunction with adverse outcomes was present. Patients with mild renal failure had significantly greater 30-day mortality rates (P = 0.001; 16% versus 6%) and frequency of postoperative bleeding (P = 0.023; 16% versus 8%), respiratory complications (P = 0.02, 29% versus 16%), and cardiac complications (P = 0.002; 18% versus 7%) than patients with normal renal function (serum creatinine <1.5 mg/dL) when controlling for multiple other variables. The presence of a serum creatinine concentration of 1.5 to 3.0 mg/dL is significantly and independently associated with adverse outcomes after cardiac valve surgery.


Assuntos
Valvas Cardíacas/cirurgia , Insuficiência Renal/complicações , Fatores Etários , Idoso , Análise de Variância , Distribuição de Qui-Quadrado , Ponte de Artéria Coronária , Creatinina/sangue , Transfusão de Eritrócitos , Feminino , Cardiopatias/etiologia , Humanos , Tempo de Internação , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Hemorragia Pós-Operatória/etiologia , Estudos Prospectivos , Insuficiência Renal/sangue , Insuficiência Renal/classificação , Doenças Respiratórias/etiologia , Fatores de Risco , Taxa de Sobrevida , Resultado do Tratamento
11.
Haemophilia ; 6(3): 162-9, 2000 May.
Artigo em Inglês | MEDLINE | ID: mdl-10792474

RESUMO

We hypothesized that magnetic resonance imaging (MRI) scans taken prior to radiosynoviorthesis may be predictive of response to the procedure in persons with haemophilia. Specifically, response would be inversely related to the severity of synovial hyperplasia. Radiosynoviorthesis was administered to 21 joints with recurrent haemorrhage (target joints). A detailed self-report of haemorrhage history, joint evaluation with scoring according to the World Federation of Haemophilia orthopaedic joint and pain scales, plain radiographs, and MRI studies of the joints were performed pre- and post-radiosynoviorthesis. To augment comparison of the MRI findings to those assessed using the Arnold-Hilgartner and Pettersson scales, a provisional MRI scale for evaluation of haemophilic arthropathy was designed. We found the MRI findings prior to the procedure were not predictive of clinical response; independent of the severity of synovial hyperplasia, most joints bled less and showed improvement by the WFH orthopaedic score. There was generally no change in the severity of synovial hyperplasia after the procedure. We conclude that MRI evaluation is not routinely indicated prior to radiosynoviorthesis.


Assuntos
Hemartrose/diagnóstico , Hemartrose/radioterapia , Hemofilia A/complicações , Imageamento por Ressonância Magnética , Adolescente , Adulto , Tornozelo/patologia , Tornozelo/efeitos da radiação , Criança , Cotovelo/patologia , Cotovelo/efeitos da radiação , Seguimentos , Hemartrose/etiologia , Hemofilia A/sangue , Hemofilia A/patologia , Hemofilia A/radioterapia , Hemofilia B/sangue , Hemofilia B/complicações , Hemofilia B/patologia , Humanos , Hiperplasia/diagnóstico , Hiperplasia/diagnóstico por imagem , Hiperplasia/radioterapia , Joelho/patologia , Joelho/efeitos da radiação , Radioisótopos de Fósforo/uso terapêutico , Radiografia , Índice de Gravidade de Doença , Membrana Sinovial/patologia , Membrana Sinovial/efeitos da radiação
12.
CJEM ; 2(4): 266, 2000 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17612455
13.
JAMA ; 281(14): 1298-303, 1999 Apr 14.
Artigo em Inglês | MEDLINE | ID: mdl-10208145

RESUMO

CONTEXT: Health-related quality of life has not been evaluated as a predictor of mortality following coronary artery bypass graft (CABG) surgery. Evaluation of health status as a mortality predictor may be useful for preoperative risk stratification. OBJECTIVE: To determine whether the Physical and Mental Component Summary scores from the preoperative Short-Form 36 (SF-36) health status survey predict mortality following CABG surgery after adjustment for known clinical risk variables. DESIGN: Prospective cohort study conducted between September 1992 and December 1996. SETTING: Fourteen Veterans Affairs hospitals. PATIENTS: Of the 3956 patients undergoing CABG surgery only and who were enrolled in the Processes, Structures, and Outcomes of Care in Cardiac Surgery study, the 2480 who completed a preoperative SF-36. MAIN OUTCOME MEASURE: All-cause mortality within 180 days after surgery. RESULTS: A total of 117 deaths (4.7%) occurred within 180 days of CABG surgery. The Physical Component Summary of the preoperative SF-36 was a statistically significant risk factor for 6-month mortality after adjustment for known clinical risk factors for mortality following CABG surgery. In multivariate analysis, a 10-point lower SF-36 Physical Component Summary score had an odds ratio (OR) of 1.39 (95% confidence interval [CI], 1.11-1.77; P=.006) for predicting mortality. The SF-36 Mental Component Summary score was not associated with 6-month mortality in multivariate analyses (OR, 1.09; 95% CI, 0.92-1.29; P=.31). CONCLUSIONS: The Physical Component Summary score from the preoperative SF-36 is an independent risk factor for mortality following CABG surgery. The baseline Mental Component Summary score does not appear to be predictive of mortality. Preoperative patient self-report of the physical component of health status may be helpful for risk stratification and clinical decision making for patients undergoing CABG surgery.


Assuntos
Ponte de Artéria Coronária/mortalidade , Avaliação de Resultados em Cuidados de Saúde , Qualidade de Vida , Perfil de Impacto da Doença , Feminino , Hospitais de Veteranos , Humanos , Funções Verossimilhança , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Estudos Prospectivos , Medição de Risco , Estatísticas não Paramétricas , Estados Unidos
14.
Kidney Int ; 55(3): 1057-62, 1999 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10027944

RESUMO

BACKGROUND: More than 600,000 coronary artery bypass graft (CABG) procedures are done annually in the United States. Some data indicate that 10 to 20% of patients who are undergoing a CABG procedure have a serum creatinine of more than 1.5 mg/dl. There are few data on the impact of a mild increase in serum creatinine concentration on CABG outcome. METHODS: We analyzed a Veterans Affairs database obtained prospectively from 1992 through 1996 at 14 of 43 centers performing heart surgery. We compared the outcome after CABG in patients with a baseline serum creatinine of less than 1.5 mg/dl (median 1.1 mg/dl, N = 3271) to patients with a baseline serum creatinine of 1.5 to 3.0 mg/dl (median 1.7, N = 631). RESULTS: Univariate analysis revealed that patients with a serum creatinine of 1.5 to 3.0 mg/dl had a higher 30-day mortality (7% vs. 3%, P < 0.001) requirement for prolonged mechanical ventilation (15% vs. 8%, P = 0.001), stroke (7% vs. 2%, P < 0.001), renal failure requiring dialysis at discharge (3% vs. 1%, P < 0.001), and bleeding complications (8% vs. 3%, P < 0.001) than patients with a baseline serum creatinine of less than 1.5 mg/dl. Multiple logistic regression analyses found that patients with a baseline serum creatinine of less than 1.5 mg/dl had significantly lower (P < 0.02) 30-day mortality and postoperative bleeding and ventilatory complications than patients with a serum creatinine of 1.5 to 3.0 mg/dl when controlling for all other variables. CONCLUSION: These results demonstrate that mild renal failure is an independent risk factor for adverse outcome after CABG.


Assuntos
Ponte de Artéria Coronária/efeitos adversos , Falência Renal Crônica/complicações , Idoso , Ponte de Artéria Coronária/mortalidade , Creatinina/sangue , Bases de Dados Factuais , Feminino , Humanos , Falência Renal Crônica/sangue , Masculino , Pessoa de Meia-Idade , Hemorragia Pós-Operatória/etiologia , Estudos Prospectivos , Doenças Respiratórias/etiologia , Fatores de Risco , Resultado do Tratamento , Estados Unidos/epidemiologia
15.
J Am Diet Assoc ; 99(1): 58-65, 1999 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-9917733

RESUMO

OBJECTIVE: To determine differences in dietary intake, resting energy expenditure, activity level, fat-free mass, and percentage body and abdominal fat in nonobese children of obese mothers compared with nonobese children of nonobese mothers. DESIGN: Cross-sectional comparison study. Children's food diaries were analyzed to determine average energy and nutrient content. Resting energy expenditure of children was measured by means of indirect calorimetry. Children's activity levels were estimated through questionnaires administered during interviews. Dual-energy x-ray absorptiometry was used to estimate body composition of children. SUBJECTS: Mothers of subjects responded to advertisements and were recruited as nonobese (body mass index = 20 to 25) or obese (body mass index > or = 30). Offspring included in the study were prepubertal and nonobese (10th to 90th percentile of weight for height by gender). Twelve pairs of children could be matched for weight, gender, and age. STATISTICAL ANALYSIS PERFORMED: Wilcoxon signed rank tests were used to determine differences between the 2 groups of children. RESULTS: Percentage abdominal fat was greater (median difference = 3.15, P = .001) and fat-free mass was lower (median difference = 1.19, P = .04) in children of obese mothers compared with children of nonobese mothers. No statistically significant differences between the 2 groups of children were found for dietary intake, resting energy expenditure, activity level, or percentage body fat. APPLICATIONS/CONCLUSIONS: The significantly higher percentage of abdominal fat and lower fat-free mass in children of obese mothers may contribute to obesity onset. Use of dual-energy x-ray absorptiometry as a screening tool for nonobese, prepubertal children with an obese parent will help to identify those at risk. Education and lifestyle changes can then be implemented to help prevent the onset of obesity.


Assuntos
Composição Corporal , Ingestão de Alimentos , Metabolismo Energético , Mães , Obesidade , Absorciometria de Fóton , Tecido Adiposo/anatomia & histologia , Adulto , Antropometria , Composição Corporal/genética , Índice de Massa Corporal , Calorimetria Indireta , Criança , Estudos Transversais , Registros de Dieta , Teste de Esforço , Pai , Feminino , Humanos , Masculino , Atividade Motora , Obesidade/genética , Puberdade/fisiologia
16.
J Acquir Immune Defic Syndr ; 22(4): 333-40, 1999 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-10634194

RESUMO

OBJECTIVE: To determine the prevalence of human herpesvirus 8 (HHV-8) infection in men treated for HIV-1 infection in Denver, Colorado. DESIGN: Cross-sectional analysis METHODS: Blood samples were obtained from 216 HIV-1-infected men. Antibody to latency-associated nuclear antigen (LANA) was detected by an immunofluorescent assay and the presence of HHV-8 in peripheral blood mononuclear cells (PBMC) was detected by polymerase chain reaction amplification. RESULTS: Among HIV-1-infected men who did not have Kaposi's sarcoma (KS), prevalence of HHV-8 infection was 46% (95% confidence interval [CI], 0.39-0.52). LANA seropositivity was common both among subjects with KS and subjects without KS (69% versus 42%; p = .06), but detection of HHV-8 DNA in peripheral blood was strongly associated with a diagnosis of KS (44% versus 10%; p = .001). In a univariate analysis of study subjects without KS, neither the odds of LANA seropositivity nor detection of HHV-8 DNA in PBMC was significant for CD4+ lymphocyte count, HIV-1 virus load, the use of three drug antiretroviral regimens or the prior occurrence of non-KS AIDS-related conditions. CONCLUSION: Although antibodies to HHV-8 are common among HIV-1-infected men, detection of HHV-8 DNA in PBMC is uncommon and is associated with a diagnosis of Kaposi's sarcoma.


Assuntos
Infecções Oportunistas Relacionadas com a AIDS/epidemiologia , Infecções por HIV/tratamento farmacológico , HIV-1 , Infecções por Herpesviridae/epidemiologia , Herpesvirus Humano 8/isolamento & purificação , Infecções Oportunistas Relacionadas com a AIDS/virologia , Adulto , Fármacos Anti-HIV/uso terapêutico , Anticorpos Antivirais/sangue , Antígenos Virais , Estudos Transversais , DNA Viral/sangue , Imunofluorescência , Infecções por HIV/complicações , Infecções por HIV/virologia , HIV-1/isolamento & purificação , Infecções por Herpesviridae/virologia , Herpesvirus Humano 8/genética , Herpesvirus Humano 8/imunologia , Humanos , Masculino , Pessoa de Meia-Idade , Proteínas Nucleares/imunologia , Reação em Cadeia da Polimerase , Prevalência , Carga Viral
17.
J Immunol ; 161(1): 513-9, 1998 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-9647263

RESUMO

We studied the in vitro effects of IL-12 on HIV-1-specific CTL lines derived from PBMC of HIV-1-infected children. HIV-1-specific CTL lines were derived by limiting dilution following Ag-specific stimulation of PBMC from HIV-1-infected children and were maintained with repeated anti-CD3 stimulation. Following incubation with IL-12 for 5 to 7 days, HIV-1-specific cytotoxicity was augmented in a dose-dependent fashion (mean increase, 94 +/- 83 lytic units; p = 0.0006). Experiments performed with CD3-blocking Abs and MHC-mismatched targets demonstrated that the IL-12-enhanced activity was MHC restricted and dependent on cells bearing CD3. The effect of IL-12 on proliferation of the CTL lines as tested by [3H]TdR uptake was minimal, with stimulation indexes ranging from 1.25 to 4.9. The effects of IL-12 on cytotoxicity were not significantly altered by addition of Ab to the IL-2R (anti-Tac) in quantities sufficient to block exogenous IL-2 (p = 0.15), demonstrating that endogenous IL-2 activity is not required for IL-12-enhanced cytolytic activity. Likewise, addition of neutralizing Ab specific for IFN-gamma did not change IL-12-enhanced cytotoxicity (p = 0.61). The in vivo role of IL-12 in the generation and the stimulation of CTL remains to be determined; however, its ability to augment HIV-1-specific CTL in vitro adds additional support for IL-12 as a candidate for immune-based therapy of HIV-1.


Assuntos
Infecções por HIV/imunologia , HIV-1/imunologia , Interleucina-12/farmacologia , Linfócitos T Citotóxicos/imunologia , Adolescente , Antígenos Virais/imunologia , Divisão Celular/efeitos dos fármacos , Divisão Celular/imunologia , Linhagem Celular , Criança , Pré-Escolar , Testes Imunológicos de Citotoxicidade , Citotoxicidade Imunológica/efeitos dos fármacos , Epitopos de Linfócito T/imunologia , Infecções por HIV/patologia , Humanos , Interferon gama/fisiologia , Interleucina-2/fisiologia , Leucócitos Mononucleares/imunologia , Leucócitos Mononucleares/patologia , Ativação Linfocitária/efeitos dos fármacos , Teste de Cultura Mista de Linfócitos , Subpopulações de Linfócitos T/imunologia , Subpopulações de Linfócitos T/virologia , Linfócitos T Citotóxicos/virologia
18.
Anesthesiology ; 88(6): 1447-58, 1998 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-9637636

RESUMO

BACKGROUND: Early tracheal extubation is an important component of the "fast track" cardiac surgery pathway. Factors associated with time to extubation in the Department of Veterans Affairs (DVA) population are unknown. The authors determined associations of preoperative risk and intraoperative clinical process variables with time to extubation in this population. METHODS: Three hundred four consecutive patients undergoing coronary artery bypass graft, valve surgery, or both on a fast track clinical pathway between October 1, 1993 and September 30, 1995 at a university-affiliated DVA medical center were studied retrospectively. After univariate screening of a battery of preoperative risk and intraoperative clinical process variables, stepwise logistic regression was used to determine associations with tracheal extubation < or = 10 h (early) or > 10 h (late) after surgery. Postoperative lengths of stay, complications, and 30-day and 6-month mortality rates were compared between the two groups. RESULTS: One hundred forty-six patients (48.3%) were extubated early; one patient required emergent reintubation (0.7%). Of the preoperative risk variables considered, only age (odds ratio, 1.80 per 10-yr increment) and preoperative intraaortic balloon pump (odds ratio, 7.88) were multivariately associated with time to extubation (model R) ("late" association is indicated by an odds ratio >1.00; "early" association is indicated by an odds ratio <1.00). Entry of these risk variables into a second regression model, followed by univariately significant intraoperative clinical process variables, yielded the following associations (model R-P): age (odds ratio, 1.86 per 10-yr increment), sufentanil dose (odds ratio, 1.54 per 1-microg/kg increment), major inotrope use (odds ratio, 5.73), platelet transfusion (odds ratio, 10.03), use of an arterial graft (odds ratio, 0.32), and fentanyl dose (odds ratio, 1.45 per 10-microg/kg increment). Time of arrival in the intensive care unit after surgery was also significant (odds ratio, 1.42 per 1-h increment). Intraoperative clinical process variables added significantly to model performance (P < 0.001 by the likelihood ratio test). CONCLUSIONS: In this population, early tracheal extubation was accomplished in 48% of patients. Intraoperative clinical process variables are important factors to be considered in the timing of postoperative extubation after fast track cardiac surgery.


Assuntos
Ponte de Artéria Coronária , Implante de Prótese de Valva Cardíaca , Intubação Intratraqueal , Adulto , Ponte de Artéria Coronária/economia , Ponte de Artéria Coronária/métodos , Controle de Custos , Implante de Prótese de Valva Cardíaca/economia , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Cuidados Pós-Operatórios , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
19.
Am J Med ; 103(3): 223-32, 1997 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-9316555

RESUMO

PURPOSE: This study assesses the efficacy and safety of fluconazole therapy in patients with acquired immunodeficiency syndrome (AIDS) and mild to moderately severe manifestations of disseminated histoplasmosis. PATIENTS AND METHODS: This was a multicenter, open-label, nonrandomized prospective trial. All patients had AIDS and disseminated histoplasmosis. Patients were treated with 1,200 mg of fluconazole given by mouth once on the first day, then 600 mg once daily for 8 weeks, and those patients who improved clinically were then assigned fluconazole maintenance therapy 200 mg once daily for at least 1 year. Interim analysis revealed a high failure rate (10 of 20, 50%), causing revision of the protocol to increase the fluconazole dose to 1,600 mg given once on the first day, then 800 mg once daily, and the duration to 12 weeks for induction therapy and then 400 mg daily for 1 year for maintenance therapy. MEASUREMENTS AND MAIN RESULTS: Thirty-six of 49 patients (74%; 95% confidence interval [CI]: 59% to 85%) with mild to moderately severe clinical manifestations who entered into the revised study responded to 800 mg of fluconazole daily for 12 weeks as induction therapy. Of the seven patients who failed induction therapy because of progression of histoplasmosis, one died of the infection. Of 36 patients who entered into the maintenance phase of the study receiving 400 mg of fluconazole daily for 1 year, 11 (30.5%) relapsed, including one who died (2.8%). Two of the 49 patients (4.1%) were removed because of grade 4 adverse events, alkaline phosphatase elevation for one and aspartate aminotransferase elevation in the other. The relapse-free rate at 1 year was 53% (95% CI: 32% to 89%), prompting closure of the study. CONCLUSIONS: Fluconazole 800 mg daily is a safe and moderately effective induction therapy for mild or moderately severe disseminated histoplasmosis in patients with AIDS. On the basis of historic comparison, fluconazole 400 mg daily is less effective than itraconazole 200 to 400 mg daily or amphotericin B 50 mg given weekly as maintenance therapy to prevent relapse.


Assuntos
Infecções Oportunistas Relacionadas com a AIDS/tratamento farmacológico , Antifúngicos/uso terapêutico , Fluconazol/uso terapêutico , Histoplasmose/tratamento farmacológico , Adulto , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Seleção de Pacientes , Estudos Prospectivos , Índice de Gravidade de Doença , Resultado do Tratamento
20.
Ann Thorac Surg ; 64(1): 134-41, 1997 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-9236349

RESUMO

BACKGROUND: "Fast-track" (FT) cardiac surgery is popular in the private and university sectors. This study was designed to examine its safety and efficacy in the Department of Veterans Affairs elderly, male patient population, a population with multiple comorbid risk factors, often decreased social functioning, and impaired support systems. METHODS: Time to extubation, hospital length of stay, perioperative morbidity, and mortality were studied in two consecutive cohorts undergoing cardiac operations requiring cardiopulmonary bypass before (pre-FT: n = 255, January 1992 to September 1993) and after (FT: n = 304, October 1993 to October 1995) institution of an FT protocol at a university-affiliated teaching Department of Veterans Affairs medical center. Preoperative risk factors, including a Department of Veterans Affairs risk-adjusted estimate of operative mortality, and perioperative surgical and anesthetic processes of care were evaluated. RESULTS: The mean Department of Veterans Affairs risk estimate of perioperative mortality was not different between the pre-FT and FT cohorts (3.5% versus 3.7%, p = 0.13). In the FT cohort, median time to extubation decreased significantly (19.2 versus 10.2 hours; p < 0.001) along with median surgical intensive care unit stay (96 versus 49 hours; p < 0.001) and total postoperative length of stay (222 versus 167 hours; p < 0.001). Median postoperative day of hospital discharge decreased from day 10 to 7 (p < 0.001). One patient (0.3%) required emergent reintubation directly related to early extubation. Reintubation for medical reasons was unchanged between pre-FT and FT groups (6.3% versus 5.0%; p = 0.48). Postoperative morbidity was similar between groups except for nosocomial pneumonia, the rate of which decreased significantly in the FT cohort (14.7% versus 7.3%; p < 0.005). Thirty-day (3.9% versus 4.6%; p = 0.69) and 6-month mortality (6.7% versus 6.9%; p = 0.91) were unchanged. CONCLUSIONS: An FT cardiac surgery protocol has been instituted in a university-affiliated teaching Department of Veterans Affairs medical center, with decreased length of stay and no significant increase in postoperative morbidity, 30-day mortality, or 6-month mortality. It was associated with a lower rate of nosocomial pneumonia, a finding that must be validated in a prospective study.


Assuntos
Procedimentos Cirúrgicos Cardíacos/métodos , Serviço Hospitalar de Cardiologia/estatística & dados numéricos , Protocolos Clínicos , Cardiopatias/cirurgia , Idoso , Procedimentos Cirúrgicos Cardíacos/mortalidade , Colorado/epidemiologia , Comorbidade , Cardiopatias/epidemiologia , Mortalidade Hospitalar , Hospitais de Veteranos , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Medição de Risco , Análise de Sobrevida , Fatores de Tempo
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