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1.
J Sex Res ; : 1-8, 2023 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-37579247

RESUMO

Sexual risk taking may be heightened among U.S. service members and veterans reporting military sexual assault (MSA) exposure. MSA increases the risk for posttraumatic stress disorder (PTSD), which is a common correlate of sexual risk taking among civilians. PTSD may relate to sexual risk taking through its association with alcohol use, which increases impulsivity and risky behavioral engagement. Male survivors may be at notably higher risk given greater overall alcohol use and engagement in sexual risk taking relative to female survivors. This study assessed whether higher alcohol use mediated the association between PTSD and sexual risk taking among MSA survivors, and whether this effect differed by sex. Participants included 200 male and 200 female service members and veterans (age: M = 35.89, SD = 5.56) who completed measures of PTSD symptoms, alcohol use, sexual risk taking, and a demographic inventory. In a moderated mediation analysis using linear regression, higher PTSD severity was associated with higher alcohol use, and higher alcohol use was associated with higher sexual risk taking. A significant indirect effect of alcohol use was observed, which was stronger among men. To reduce sexual risk taking among MSA survivors, it may be beneficial to target PTSD symptoms and alcohol use with sex-specific interventions. This line of inquiry would be strengthened by longitudinal studies that explore the fluidity of these experiences to identify periods of elevated risk. Studies that examine alcohol use expectancies and sexual delay discounting could expand our understanding of these associations.

2.
Arch Pediatr ; 30(5): 307-313, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37236887

RESUMO

BACKGROUND: Collagen gastritis is a rare disease that manifests in children mainly as isolated gastric involvement associated with martial deficiency anemia. There are no recommendations for the management and follow-up of these patients. We aimed to describe the clinical data, endoscopic findings, and treatments deployed in France's children with collagenous gastritis. METHODS: All French pediatric gastroenterology centers and pediatric centers for rare digestive diseases (Centres de Maladies Rares Digestives) were contacted to collect cases of collagenous gastritis, defined on gastric biopsies and diagnosed before 18 years of age. RESULTS: A total of 12 cases diagnosed (4 males and 8 females) between 1995 and 2022 could be analyzed. The median age at diagnosis was 12.5 years (7-15.2). The most frequent clinical presentation was abdominal pain (6/11) and/or nonspecific symptomatology attributed to anemia (8/10). Anemia was present in all children (11/11; Hb 2.8-9.1 g/dL). Nodular gastritis was present in 10 patients (antrum: 2; fundus: 4; in antrum and fundus: 4). All patients had a basement membrane thickening (from 19 to 100 µm). The treatments received were PPI (11), oral or intravenous martial supplementation (12), budesonide (1), and prednisone (1). Martial supplementation improved anemia in all cases. At discontinuation, nine of 10 patients had a recurrence of anemia. CONCLUSION: Collagenous gastritis is an exceptional condition, clinically manifested in children as abdominal pain and iron deficiency anemia probably of hemorrhagic origin. Patients require long-term follow-up and monitoring of their disease to describe the risk of progression better.


Assuntos
Anemia , Gastrite , Síndromes de Malabsorção , Masculino , Feminino , Humanos , Criança , Gastrite/complicações , Gastrite/diagnóstico , Gastrite/terapia , Biópsia , Síndromes de Malabsorção/complicações , Anemia/complicações , Dor Abdominal/etiologia
3.
Prev Chronic Dis ; 15: E122, 2018 10 11.
Artigo em Inglês | MEDLINE | ID: mdl-30316307

RESUMO

Veterans who are discharged from military service due to misconduct are vulnerable to negative health-related outcomes, including homelessness, incarceration, and suicide. We used national data from the Veterans Health Administration for 218,608 veterans of conflicts in Iraq and Afghanistan that took place after the events of September 11, 2001, to compare clinical diagnoses between routinely-discharged (n = 203,174) and misconduct-discharged (n = 15,433) veterans. Misconduct-discharged veterans had significantly higher risk for all mental health conditions (adjusted odds ratio [AOR] range, 2.5-8.0) and several behaviorally linked chronic health conditions (AOR range, 1.2-5.9). Misconduct-discharged veterans have serious and complex health care needs; prevention efforts should focus on behavioral risk factors to prevent the development and exacerbation of chronic health conditions among this vulnerable population.


Assuntos
Doença Crônica/epidemiologia , Nível de Saúde , Veteranos/psicologia , Campanha Afegã de 2001- , Doença Crônica/psicologia , Bases de Dados Factuais , Feminino , Humanos , Guerra do Iraque 2003-2011 , Masculino , Estudos Retrospectivos , Estados Unidos/epidemiologia , United States Department of Veterans Affairs , Veteranos/estatística & dados numéricos
4.
J Perinatol ; 38(2): 175-180, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-28933776

RESUMO

OBJECTIVE: To examine the association of nursing overtime, nursing provision and unit occupancy rate with medical incident rates in the neonatal intensive care unit (NICU) and the risk of mortality or major morbidity among very preterm infants. STUDY DESIGN: Single center retrospective cohort study of infants born within 23 to 29 weeks of gestational age or birth weight <1000 g admitted at a 56 bed, level III NICU. Nursing overtime ratios (nursing overtime hours/total nursing hours), nursing provision ratios (nursing hours/recommended nursing hours based on patient dependency categories) and unit occupancy rates were pooled for all shifts during NICU hospitalization of each infant. Log-binomial models assessed their association with the composite outcome (mortality or major morbidity). RESULTS: Of the 257 infants that met the inclusion criteria, 131 (51%) developed the composite outcome. In the adjusted multivariable analyses, high (>3.4%) relative to low nursing overtime ratios (⩽3.4%) were not associated with the composite outcome (relative risk (RR): 0.93; 95% confidence interval (CI): 0.86 to 1.02). High nursing provision ratios (>1) were associated with a lower risk of the composite outcome relative to low ones (⩽1) (RR: 0.81; 95% CI: 0.74 to 0.90). NICU occupancy rates were not associated with the composite outcome (RR: 0.98; 95% CI: 0.89 to 1.07, high (>100%) vs low (⩽100%)). Days with high nursing provision ratios (>1) were also associated with lower risk of having medical incidents (RR: 0.91; 95% CI: 0.82 to 0.99). CONCLUSION: High nursing provision ratio during NICU hospitalization is associated with a lower risk of a composite adverse outcome in very preterm infants.


Assuntos
Ocupação de Leitos/estatística & dados numéricos , Doenças do Prematuro/epidemiologia , Unidades de Terapia Intensiva Neonatal/estatística & dados numéricos , Recursos Humanos de Enfermagem/organização & administração , Admissão e Escalonamento de Pessoal , Feminino , Humanos , Lactente , Mortalidade Infantil/tendências , Recém-Nascido de Peso Extremamente Baixo ao Nascer , Lactente Extremamente Prematuro , Recém-Nascido , Doenças do Prematuro/mortalidade , Masculino , Quebeque , Análise de Regressão , Estudos Retrospectivos , Recursos Humanos
5.
Clin Toxicol (Phila) ; 52(9): 926-44, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25283255

RESUMO

CONTEXT: Calcium channel blocker poisoning is a common and sometimes life-threatening ingestion. OBJECTIVE: To evaluate the reported effects of treatments for calcium channel blocker poisoning. The primary outcomes of interest were mortality and hemodynamic parameters. The secondary outcomes included length of stay in hospital, length of stay in intensive care unit, duration of vasopressor use, functional outcomes, and serum calcium channel blocker concentrations. METHODS: Medline/Ovid, PubMed, EMBASE, Cochrane Library, TOXLINE, International pharmaceutical abstracts, Google Scholar, and the gray literature up to December 31, 2013 were searched without time restriction to identify all types of studies that examined effects of various treatments for calcium channel blocker poisoning for the outcomes of interest. The search strategy included the following Keywords: [calcium channel blockers OR calcium channel antagonist OR calcium channel blocking agent OR (amlodipine or bencyclane or bepridil or cinnarizine or felodipine or fendiline or flunarizine or gallopamil or isradipine or lidoflazine or mibefradil or nicardipine or nifedipine or nimodipine or nisoldipine or nitrendipine or prenylamine or verapamil or diltiazem)] AND [overdose OR medication errors OR poisoning OR intoxication OR toxicity OR adverse effect]. Two reviewers independently selected studies and a group of reviewers abstracted all relevant data using a pilot-tested form. A second group analyzed the risk of bias and overall quality using the STROBE (STrengthening the Reporting of OBservational studies in Epidemiology) checklist and the Thomas tool for observational studies, the Institute of Health Economics tool for Quality of Case Series, the ARRIVE (Animal Research: Reporting In Vivo Experiments) guidelines, and the modified NRCNA (National Research Council for the National Academies) list for animal studies. Qualitative synthesis was used to summarize the evidence. Of 15,577 citations identified in the initial search, 216 were selected for analysis, including 117 case reports. The kappa on the quality analysis tools was greater than 0.80 for all study types. RESULTS: The only observational study in humans examined high-dose insulin and extracorporeal life support. The risk of bias across studies was high for all interventions and moderate to high for extracorporeal life support. High-dose insulin. High-dose insulin (bolus of 1 unit/kg followed by an infusion of 0.5-2.0 units/kg/h) was associated with improved hemodynamic parameters and lower mortality, at the risks of hypoglycemia and hypokalemia (low quality of evidence). Extracorporeal life support. Extracorporeal life support was associated with improved survival in patients with severe shock or cardiac arrest at the cost of limb ischemia, thrombosis, and bleeding (low quality of evidence). Calcium, dopamine, and norepinephrine. These agents improved hemodynamic parameters and survival without documented severe side effects (very low quality of evidence). 4-Aminopyridine. Use of 4-aminopyridine was associated with improved hemodynamic parameters and survival in animal studies, at the risk of seizures. Lipid emulsion therapy. Lipid emulsion was associated with improved hemodynamic parameters and survival in animal models of intravenous verapamil poisoning, but not in models of oral verapamil poisoning. Other studies. Studies on decontamination, atropine, glucagon, pacemakers, levosimendan, and plasma exchange reported variable results, and the methodologies used limit their interpretation. No trial was documented in humans poisoned with calcium channel blockers for Bay K8644, CGP 28932, digoxin, cyclodextrin, liposomes, bicarbonate, carnitine, fructose 1,6-diphosphate, PK 11195, or triiodothyronine. Case reports were only found for charcoal hemoperfusion, dialysis, intra-aortic balloon pump, Impella device and methylene blue. CONCLUSIONS: The treatment for calcium channel blocker poisoning is supported by low-quality evidence drawn from a heterogeneous and heavily biased literature. High-dose insulin and extracorporeal life support were the interventions supported by the strongest evidence, although the evidence is of low quality.


Assuntos
Bloqueadores dos Canais de Cálcio/intoxicação , Overdose de Drogas/terapia , Animais , Bloqueadores dos Canais de Cálcio/sangue , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Overdose de Drogas/mortalidade , Guias como Assunto , Hospitalização , Humanos , Insulina/uso terapêutico , Tempo de Internação , Estudos Observacionais como Assunto , Resultado do Tratamento , Vasoconstritores/administração & dosagem
6.
Osteoporos Int ; 20(5): 723-9, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-18839050

RESUMO

UNLABELLED: This study aims to analyze whether the interval from hospital admission to surgery may be used as a surrogate of the actual gap from fracture to surgery when investigating in-hospital hip fracture mortality. After analyzing 3,754 hip fracture admissions, we concluded that those intervals might be used interchangeably without misinterpretation bias. INTRODUCTION: The debate regarding the influence of time to surgery in hip fracture (HF) mortality is one of the most controversial issues in the HF medical literature. Most previous investigations actually analyzed the time from hospital admission to surgery as a surrogate of the less easily available gap from fracture to surgery. Notwithstanding, the assumption of equivalency between those intervals remains untested. METHODS: We analyzed 3,754 hospital admissions of elderly patients due to HF in Quebec, Canada. We compared the performance as predictors of in-hospital mortality of the delay from admission to surgery and the actual gap from fracture to surgery using univariate and multiple logistic regression analysis. RESULTS: The mean times from fracture to surgery and from admission to surgery were 1.84 and 1.02 days (P < 0.001), respectively. On univariate logistic regression, both times were slightly significant as mortality predictors, yielding similar odds ratios of 1.08 (P < 0.001) for time from fracture to surgery and 1.11 (P < 0.001) for time from admission to surgery. After accounting for other covariates, neither times remained significant mortality predictors. CONCLUSION: The gap from admission to surgery may be used as a surrogate of the actual delay from fracture to surgery when studying in-hospital HF mortality.


Assuntos
Fraturas do Quadril/mortalidade , Mortalidade Hospitalar , Hospitalização/estatística & dados numéricos , Idoso , Idoso de 80 Anos ou mais , Feminino , Fraturas do Quadril/etiologia , Fraturas do Quadril/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Osteoporose/complicações , Osteoporose/cirurgia , Quebeque/epidemiologia , Fatores de Tempo
7.
QJM ; 98(1): 41-51, 2005 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-15625353

RESUMO

BACKGROUND: Little is known about how physicians' knowledge of and attitudes to practice guidelines for stable angina may influence their implementation. AIM: To explore the association between physicians' demographics, their knowledge, and opinions about stable angina and their self-reported adherence to guideline recommendations. DESIGN: Questionnaire-based survey. METHODS: We surveyed 1228 Quebec physicians using a questionnaire based on the 'awareness-to-adherence' conceptual framework to measure their adherence with recommendations for the pharmacological treatment of stable angina. Independent predictors of adherence with the targeted recommendations were determined by stepwise linear regression analysis. RESULTS: We received 877 (71.4%) responses from the 1228 eligible physicians. More than 90% of respondents were aware of and agreed with the targeted recommendations. However, the adoption rate varied, even among physicians who generally agreed with the guidelines. Factor analysis indicated that most physicians agreed with recommendations concerning ASA. More negative attitudes were expressed toward beta-blockers and hypolipaemic drugs. Respondents trusted the recommendations of a variety of scientific and professional organizations. Awareness, agreement, and adoption were the strongest predictors of adherence for the three recommendations. Physician demographics and practice characteristics did not predict adherence. DISCUSSION: Physicians were aware of and agreed with the recommendations, so additional large-scale dissemination of the guidelines would be unlikely to improve prescription patterns. However, negative attitudes about beta-blockers and hypolipaemic therapy affected adherence to recommendations for these drugs. Continuing medical education interventions involving local opinion leaders might address some of the obstacles identified.


Assuntos
Angina Pectoris/tratamento farmacológico , Atitude do Pessoal de Saúde , Competência Clínica , Médicos/psicologia , Antagonistas Adrenérgicos beta/uso terapêutico , Adulto , Idoso , Feminino , Fidelidade a Diretrizes , Humanos , Hipolipemiantes/uso terapêutico , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Inibidores da Agregação Plaquetária/uso terapêutico , Guias de Prática Clínica como Assunto , Quebeque , Inquéritos e Questionários
8.
Ann Chir ; 129(1): 11-3, 2004 Feb.
Artigo em Francês | MEDLINE | ID: mdl-15019848

RESUMO

Can we accept the statistics provided by the Ministry of Health, which uses large computerized databases? Through MEDECHO, the Ministry provides to hospital managers, reports cards on different interventions. These reports compare different hospitals performances. Surgeons involved in the process hesitate to accept this information. Using the results of the performance of cholecystectomy provided by this system (Gr: A), we compared the same cohort (1 April-31 December 1996 = 346 cholecystectomies) but using specific criteria determined as relevant to our surgeons (Gr: B). The rate of complication gives a crude aftermath and no attempt was used to adjust for severity. The MEDECHO data are adjusted for severity. The global rate of complications is similar Gr: A 11%, Gr: B 12%. Major complication rate for pulmonary embolism, hemorrhage and biliary duct trauma are identical. The rate of surgical site infection is higher in Gr: B (5% vs. 2%). The patients are seen in the outpatient clinic and these observations are not included by the analytical system unless the patient has been readmitted. For our hospital, the MEDECHO data are valid and reliable even though they underestimated the wound infection rate. These results could be explained by an appropriate interpretation of the code system by the archivist and by the surgeons' precision to complete the summary sheet of hospitalization. We can conclude that these data can be used as a means to evaluate the quality of outcome of a surgical service.


Assuntos
Colecistectomia/estatística & dados numéricos , Programas Nacionais de Saúde/estatística & dados numéricos , Canadá , Bases de Dados Factuais , Humanos , Complicações Pós-Operatórias/epidemiologia , Reprodutibilidade dos Testes
9.
QJM ; 97(1): 21-31, 2004 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-14702508

RESUMO

BACKGROUND: Public agencies responsible for implementing health care policies often adapt and disseminate clinical practice guidelines, but the effectiveness of mass dissemination of guidelines is unknown. AIM: To study the effects of guideline dissemination on physicians' prescribing practices for the treatment of stable angina pectoris. DESIGN: Randomized controlled trial. METHODS: A sample of 3293 Quebec physicians were randomly assigned to receive a one-page summary of clinical practice guidelines on the treatment of stable angina (in February 1999), to receive the summary and a reminder (in February and March 1999, respectively), or to receive no intervention (controls). The prescribing profiles of participants, as well as sociodemographic characteristics of the physicians and their patients, were examined for June-December 1999. RESULTS: The intervention had no effect on prescription rates of beta-blockers, antiplatelet agents, or hypolipaemic drugs. Compared to 1997 data for the same physicians, there was an overall 10% increase in appropriate prescription rates, irrespective of the intervention. DISCUSSION: In-house production and dissemination of clinical practice guidelines may not improve physicians' practice patterns if there is pre-existing substantial scientific consensus on the issue.


Assuntos
Angina Pectoris/tratamento farmacológico , Guias de Prática Clínica como Assunto , Padrões de Prática Médica/estatística & dados numéricos , Antagonistas Adrenérgicos beta/uso terapêutico , Idoso , Competência Clínica , Feminino , Seguimentos , Humanos , Hipolipemiantes/uso terapêutico , Modelos Logísticos , Masculino , Inibidores da Agregação Plaquetária/uso terapêutico , Quebeque
10.
QJM ; 94(6): 301-8, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11391028

RESUMO

There is good evidence for the use of antiplatelet, beta-blocker and lipid-lowering drugs in the treatment of ischaemic heart disease, but few data on how these medications are used in treating stable angina pectoris. We examined prescription profiles for a sample of patients aged > or =65 years with stable angina, to compare the profiles to local guidelines and to explore the determinants of these profiles, in a cross-sectional study. We identified 11 141 individuals from the Quebec provincial out-patient pharmaceutical database for the period 1 June 1996 to 31 May 1997, and examined the percentage of these patients with and without associated co-morbidities receiving antiplatelet, beta-blocker and lipid-lowering medications. We used hierarchical modelling to examine the role of patient and physician characteristics in explaining the variation in the use of these medications. Calcium-channel blockers were the class of anti-ischaemic drugs most prescribed (63%). Beta-blockers were prescribed in 52.1% of patients. Antiplatelet and lipid-lowering drugs were prescribed to 56.8% and 32.6%, respectively. Increasing age and female gender made patients less likely to be prescribed these treatments. General practitioners were less likely than cardiologists to prescribe beta-blockers and lipid-lowering drugs (OR 0.79, CI 95% 0.68-0.91 and OR 0.77, CI 95% 0.66-0.91, respectively). There is a general under-use of antiplatelet, beta-blocker and lipid-lowering medications in the treatment of stable angina pectoris patients, possibly leading to adverse patient outcomes.


Assuntos
Antagonistas Adrenérgicos beta/uso terapêutico , Angina Pectoris/tratamento farmacológico , Hipolipemiantes/uso terapêutico , Inibidores da Agregação Plaquetária/uso terapêutico , Padrões de Prática Médica , Fatores Etários , Idoso , Estudos Transversais , Feminino , Fidelidade a Diretrizes , Humanos , Modelos Logísticos , Masculino , Guias de Prática Clínica como Assunto , Fatores Sexuais
11.
Chest ; 119(5): 1316-21, 2001 May.
Artigo em Inglês | MEDLINE | ID: mdl-11348934

RESUMO

STUDY OBJECTIVES: To assess whether the utilization of inhaled short-acting beta(2)-agonists (ISAB) and inhaled long-acting beta(2)-agonists (ILAB) for the treatment of asthma was appropriate according to the 1996 Canadian Asthma Consensus Conference recommendations. DESIGN: Population-based retrospective drug utilization review using pharmacists' billing data of the Prescription Drug Insurance Plan administered by the Quebec health insurance board. However, the database used did not contain complete patient clinical information to accurately assess severity of asthma. SETTING: Province of Quebec, Canada. PATIENTS: Persons who received at least one outpatient prescription of ISAB (age range, 5 to 45 years) or ILAB (age range, 12 to 45 years) for the treatment of asthma between August 1997 and April 1998. MEASUREMENTS: Percentages of patients whose use was appropriate according to three criteria regarding the average daily dose of ISAB (criterion 1), the renewal interval of ILAB (criterion 2), and the concomitant daily use of corticosteroids for the expected length of utilization of ILAB (criterion 3). RESULTS: Overall proportions of appropriate use according to criterion 1 were as follows: 75% (without inhaled corticosteroids [ICS]) and 84% and 43% (with one or more than one prescription of ICS, respectively). Appropriateness was slightly higher for female patients, younger patients (5 to 18 years old), and those treated by pediatricians. However, appropriateness was only 9% among patients who received at least two prescriptions of ISAB during the study period. The proportion of appropriate use was 19% according to criterion 2 and 15% according to criterion 3; there were few differences by gender or by age, but the appropriateness according to criterion 2 was somewhat higher for patients of respirologists. CONCLUSION: Compared to the 1996 Canadian asthma consensus conference recommendations, ISAB are overused, ICS are underused, and ILAB are often used improperly. Close collaboration between health professionals and patients is essential to improve the pharmacotherapy of asthma.


Assuntos
Agonistas Adrenérgicos beta/uso terapêutico , Albuterol/administração & dosagem , Asma/tratamento farmacológico , Administração por Inalação , Adolescente , Corticosteroides/uso terapêutico , Adulto , Idoso , Assistência Ambulatorial , Criança , Pré-Escolar , Preparações de Ação Retardada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Quebeque , Estudos Retrospectivos
12.
J Midwifery Womens Health ; 46(2): 60-7, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11370691

RESUMO

In 1990, the province of Québec, Canada, adopted a law that authorized the evaluation of the practice of midwifery through pilot projects before its legalization. A key objective of this evaluation, as defined by the law, was the documentation of women's assessment of maternity care, especially with regard to humanization and continuity of care. Two to 3 months after birth, 933 midwifery clients and 1,000 physicians' clients, matched on several characteristics, responded to a mailed questionnaire (response rates were 93% and 76%, respectively). Results showed that women from both groups were generally satisfied with the care they received, although women who received midwifery care were assessed as more positive on every issue surveyed. Objective measures supported impressions that were also confirmed through qualitative data analysis: midwifery clients had a greater number of and longer prenatal visits, their care was perceived to be more personalized, and a greater number of midwives' clients breastfed their infants. However, the interpretation of these results must take into account that the two groups had different personal expectations and values with regard to health and health care. These findings are enlightening in evaluating women's needs, expectations, and satisfaction with health care services and should be included in future development of maternity care, including idwifery services, in Québec and other locations.


Assuntos
Tocologia/normas , Auditoria de Enfermagem , Avaliação de Processos e Resultados em Cuidados de Saúde , Satisfação do Paciente , Qualidade da Assistência à Saúde/estatística & dados numéricos , Estudos de Coortes , Feminino , Humanos , Cuidado Pós-Natal , Gravidez , Cuidado Pré-Natal , Indicadores de Qualidade em Assistência à Saúde , Quebeque , Inquéritos e Questionários
13.
Med Phys ; 27(5): 1127-30, 2000 May.
Artigo em Inglês | MEDLINE | ID: mdl-10841419

RESUMO

We have developed a variable speed translating patient couch system for the delivery of total body irradiation (TBI). For a whole body Rando-type phantom, dose variation at mid-plane relative to the prescription point (navel) can be as high as 15% (neck or legs) with a constant velocity. By taking into account variations in body thickness, the intensity modulation radiation therapy, resulting from variable velocities, effectively delivers a uniform dose distribution at mid plane. The couch control user interface, technical aspects and dose planning optimization procedure for determining velocity distribution are described.


Assuntos
Irradiação Corporal Total/instrumentação , Fenômenos Biofísicos , Biofísica , Humanos , Movimento (Física) , Neoplasias/diagnóstico por imagem , Neoplasias/radioterapia , Imagens de Fantasmas , Planejamento da Radioterapia Assistida por Computador , Tomografia Computadorizada por Raios X , Irradiação Corporal Total/métodos
14.
Can J Public Health ; 91(1): I1-4, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-10765580

RESUMO

In 1990, the province of Quebec adopted a law authorizing the evaluation of the practice of midwifery through eight pilot projects. The projects, which took the form of birth centres outside hospitals, started operating in 1994. The objectives of the evaluation were 1) to compare midwives' services to current physician services with regard to maternal and neonatal mortality and morbidity, the use of obstetrical intervention, individualization and continuity of care as perceived by clients, and cost; and 2) to identify the professional and organizational factors associated with the integration of midwives into the health care system. A mixed evaluative design was used: a multiple case study with each pilot project representing a case and a cohort study where 1,000 women followed by midwives in the birth centres were matched with 1,000 women followed by physicians in the usual hospital-based services. Various quantitative and qualitative data collection instruments were used. Overall, many results were favourable to midwifery practice, while some were favourable to medical care. Following the evaluation, the Government of Quebec decided to legalize the practice of midwifery.


Assuntos
Centros de Assistência à Gravidez e ao Parto/organização & administração , Enfermeiros Obstétricos/organização & administração , Resultado da Gravidez , Estudos de Casos e Controles , Análise Custo-Benefício , Feminino , Humanos , Mortalidade Infantil , Recém-Nascido , Mortalidade Materna , Enfermeiros Obstétricos/educação , Pesquisa em Avaliação de Enfermagem , Obstetrícia/normas , Projetos Piloto , Gravidez , Resultado da Gravidez/epidemiologia , Quebeque/epidemiologia
15.
Can J Public Health ; 91(1): I5-11, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-10765581

RESUMO

The purpose of this study was to compare indicators of process and outcome of midwifery services provided in the Quebec pilot projects to those associated with standard hospital-based medical services. Women receiving each type of care (961 per group) were matched on the basis of socio-demographic characteristics and level of obstetrical risk. We found midwifery care to be associated with less obstetrical intervention and a reduction in selected indicators of maternal morbidity (caesarean section and severe perineal injury). For neonatal outcome indicators, midwifery care was associated with a mixture of benefits and risks: fewer babies with preterm birth and low birthweight, but a trend toward a higher stillbirth ratio and more frequent requirement for neonatal resuscitation. The study design does not permit to conclude that the associations were causal in nature. However, the high stillbirth rate observed in the group of women who were selected for midwife care raises concerns both regarding the appropriateness of the screening procedures for admission to such care and regarding the quality of care itself.


Assuntos
Centros de Assistência à Gravidez e ao Parto/normas , Hospitalização , Enfermeiros Obstétricos/normas , Obstetrícia/normas , Indicadores de Qualidade em Assistência à Saúde , Adulto , Feminino , Morte Fetal/epidemiologia , Humanos , Pesquisa em Avaliação de Enfermagem , Avaliação de Processos e Resultados em Cuidados de Saúde , Projetos Piloto , Gravidez , Resultado da Gravidez/epidemiologia , Quebeque/epidemiologia , Fatores Socioeconômicos
16.
Can J Public Health ; 91(1): I12-5, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-10765582

RESUMO

This study compared the cost-effectiveness of midwife services provided in birth centres operating as pilot projects with current hospital-based medical services in the province of Quebec. One thousand midwives' clients were matched with 1,000 physicians' clients on the basis of socio-demographic characteristics and obstetrical risk. Direct costs for the prenatal, intrapartum and postpartum periods were estimated. Effectiveness was assessed on the basis of three clinical indicators and four indices related to the individualization of care as assessed by women. Results show that the costs of midwife services were barely lower than or equal to those of physician services, but cost-effectiveness ratios were to the advantage of the midwife group, except for one clinical indicator (neonatal ventilation). Overall, this study provides rational support for the process of legalizing midwifery in the province.


Assuntos
Centros de Assistência à Gravidez e ao Parto/economia , Custos Diretos de Serviços/estatística & dados numéricos , Custos Hospitalares/estatística & dados numéricos , Enfermeiros Obstétricos/economia , Obstetrícia/economia , Centros de Assistência à Gravidez e ao Parto/normas , Análise Custo-Benefício , Feminino , Humanos , Enfermeiros Obstétricos/normas , Pesquisa em Avaliação de Enfermagem , Obstetrícia/normas , Projetos Piloto , Gravidez , Resultado da Gravidez , Indicadores de Qualidade em Assistência à Saúde , Quebeque
17.
Can J Public Health ; 91(1): I16-20, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-10765583

RESUMO

This paper reports on one aspect of the evaluation of the midwifery pilot projects in Quebec: the identification of the professional and organizational factors, as well as the mode of integrating midwives into the maternity care system, that would promote the best outcomes and the autonomy of midwives. The research strategy involved a multiple-case study, in which each midwifery pilot project represented a case. Based on a qualitative approach, the study employed various sources of data: individual interviews and focus groups with key informants, site observations and analyses of written documents. Results show that midwives were poorly integrated into the health care system during the evaluation. Four main reasons were identified: lack of knowledge about the practice of midwifery on the part of other health care providers; deficiencies in the legal and organizational structure of the pilot projects; competition over professional territories; and gaps between the midwives' and other providers' professional cultures. Recommendations are provided to facilitate the integration of midwives into the health care system.


Assuntos
Atitude do Pessoal de Saúde , Centros de Assistência à Gravidez e ao Parto/organização & administração , Prestação Integrada de Cuidados de Saúde/organização & administração , Conhecimentos, Atitudes e Prática em Saúde , Serviços de Saúde Materna/organização & administração , Enfermeiros Obstétricos/organização & administração , Enfermeiros Obstétricos/psicologia , Médicos/psicologia , Grupos Focais , Humanos , Enfermeiros Obstétricos/educação , Pesquisa em Avaliação de Enfermagem , Obstetrícia , Projetos Piloto , Quebeque , Inquéritos e Questionários
18.
J Nurse Midwifery ; 44(4): 399-407, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10466287

RESUMO

The objective of this study was to identify the characteristics of physicians practicing obstetrics in the province of Quebec, Canada and relate these to their opinions about midwifery practice. A self-administered questionnaire was sent to a systematic random sample of 844 physicians; 597 physicians answered (response rate = 71%). Results show that physicians who were more open to midwives had a more client-centered approach to maternity care. They had attended premed school outside Canada but received their specialty training in Canada. They also had often collaborated with midwives since they had begun practicing. Physicians who were more open to midwives were less demanding in terms of level of midwife training. They agreed that midwives should be self-regulating. It is concluded that greater knowledge of midwives' practice, gained through collaboration in the workplace and interdisciplinary education, could help physicians to better understand the significant contributions that midwives can make to the health care system.


Assuntos
Tocologia , Obstetrícia , Médicos , Padrões de Prática Médica , Adulto , Feminino , Humanos , Masculino , Quebeque , Inquéritos e Questionários
19.
Soc Sci Med ; 48(9): 1237-45, 1999 May.
Artigo em Inglês | MEDLINE | ID: mdl-10220022

RESUMO

The purpose of this study was to compare the use of medical services over a period of one year by members of ethnic groups and native Quebecers in Canada, while controlling for a number of confounding factors. The objective was to determine whether the two groups made the same number of medical visits to the same sites (private offices, outpatient clinic and emergency room and hospital inpatient care) and the same types of physicians (general practitioners, specialists). Two sources of data were used. The first was the Quebec Health Survey conducted in 1987 on a representative sample of 31,995 noninstitutionalized persons. Through personal interviews and self-administered questionnaires, data were collected on the demographic characteristics and health status of the respondents. The second source of data was the Quebec physician claims database, which contains a complete registry of services paid to physicians on a fee for service basis in the 12 months prior to the survey. The two databases were linked at the individual level (success rate is 88%). Members of ethnic groups aged 15 years and older were then individually matched to native Quebecers having the same six characteristics (age, gender, household income, access to health care facilities, perceived health and overall health). Final sample size was 1182 (divided equally into the two study groups). Results showed that neither the average number of medical services used over a year by the two groups nor the number of users differed. However, ethnic groups made more visits to specialists in private offices. Although not definite, possible explanations of these results are discussed. It is concluded that health care professionals should be sensitive to the particular needs of ethnic groups in order to provide them with accessible and appropriate services.


Assuntos
Etnicidade/estatística & dados numéricos , Serviços de Saúde/estatística & dados numéricos , Adolescente , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Programas Nacionais de Saúde/estatística & dados numéricos , Quebeque
20.
Can J Public Health ; 88(3): 159-62, 1997.
Artigo em Inglês | MEDLINE | ID: mdl-9260355

RESUMO

PURPOSE: To determine whether users and non-users of alternative medicine in the province of Quebec differ in terms of demographic characteristics, health profile or utilization of medical services. METHODS: The Quebec Health Insurance Board (QHIB) medical service records of the Quebec Health Survey (1987) respondents for the 12 months before the survey were linked with respondents' survey answers. Those who saw an alternative medicine practitioner at their last professional consultation (the "users", n = 169) were matched by diagnosis and area of residence with those who saw a physician instead (the "non-users", n = 169). RESULTS: Users and non-users of alternative medicine differed in age, activity, education and income. After adjustment for age, education and income, the two groups had a similar health profile, but users of alternative medicine had made fewer medical visits in the previous year. CONCLUSION: Alternative medicine attracts a particular clientele. More research is needed to understand the reasons people look to alternative therapies instead of conventional medicine.


Assuntos
Terapias Complementares/estatística & dados numéricos , Adolescente , Adulto , Idoso , Distribuição de Qui-Quadrado , Tomada de Decisões , Demografia , Feminino , Serviços de Saúde/estatística & dados numéricos , Indicadores Básicos de Saúde , Inquéritos Epidemiológicos , Humanos , Masculino , Pessoa de Meia-Idade , Quebeque
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