Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
1.
Clin Infect Dis ; 64(6): 806-809, 2017 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-28011604

RESUMO

Discontinuing routine processing of screening urine cultures prior to elective joint arthroplasty resulted in substantial reduction in urine cultures ordered and antimicrobial prescriptions for asymptomatic bacteriuria, without any significant impact on incidence of prosthetic joint infection. This simple change would be scalable across institutions with potential for significant healthcare savings.


Assuntos
Artroplastia de Substituição , Procedimentos Cirúrgicos Eletivos , Infecção da Ferida Cirúrgica/etiologia , Urinálise , Infecções Urinárias/complicações , Infecções Urinárias/diagnóstico , Idoso , Idoso de 80 Anos ou mais , Artroplastia de Substituição/efeitos adversos , Procedimentos Cirúrgicos Eletivos/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Medição de Risco , Infecção da Ferida Cirúrgica/prevenção & controle
2.
Can J Infect Dis Med Microbiol ; 23(3): 130-4, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23997780

RESUMO

BACKGROUND: Caenorhabditis elegans has previously been used as a host model to determine the virulence of clinical methicillin-resistant Staphylococcus aureus isolates. In the present study, methicillin-susceptible S aureus (MSSA) strains associated with an outbreak in a neonatal intensive care unit (NICU) were investigated using the C elegans model. METHODS: Two distinct outbreak clones, MSSA type-C and MSSA type-G, were identified by pulsed-field gel electrophoresis in a MSSA outbreak during a seven-month period in the NICU of the Sunnybrook Health Sciences Centre (Toronto, Ontario). MSSA type-C was associated with severe infection, while type-G was associated with less invasive disease. Four representative type-C isolates, three type-G and three infant-colonized isolates unrelated to the outbreak, were sent to Calgary (Alberta), for the double-blinded virulence tests in the C elegans host model and for further molecular characterization. RESULTS: The invasive outbreak strains (type-C) demonstrated highly nematocidal activity, the noninvasive outbreak strains (type-G) an intermediate virulence, and the outbreak-unrelated colonization isolates demonstrated avirulence or low virulence in the C elegans model, with mean killing rates of 93.0%, 61.0% and 14.4% by day 9, respectively, for these three group strains. Different group MSSA strains had their own unique genetic profiles and virulence gene profiles, but all isolates within the same group (type-C or type-G) shared identical genetic characteristics and virulence gene patterns. CONCLUSIONS: The present blinded evaluation demonstrated that the nematocidal activities of MSSA strains correlated well with the clinical manifestation in an MSSA outbreak in the NICU, supporting C elegans as a robust host model to study the pathogenesis of S aureus.


HISTORIQUE: Le Caenorhabditis elegans a déjà été utilisé comme modèle hôte pour déterminer la virulence des isolats de Staphylococcus aureus résistant à la méthicilline. Dans la présente étude, les chercheurs ont étudié les souches de S aureus susceptible à la méthicilline (SASM) associées à une flambée dans une unité de soins intensifs néonatals (USIN), au moyen du modèle de C elegans. MÉTHODOLOGIE: Les chercheurs ont repéré deux clones de flambée distincts au moyen de l'électrophérèse sur gel en champ pulsé, soit le SASM de type C et celui de type G, lors d'une flambée de SASM sur une période de sept mois à l'USIN du Sunnybrook Health Sciences Centre de Toronto, en Ontario. Le SASM de type C s'associait à une grave infection, tandis que celui de type G s'associait à une maladie moins invasive. Les chercheurs ont envoyé à Calgary, en Alberta, quatre isolats de type C représentatifs, trois de type G et trois isolats colonisés chez des nourrissons non liés à cette flambée, pour faire effectuer des tests de virulence à double insu dans le modèle hôte de C elegans et obtenir une meilleure caractérisation moléculaire. RÉSULTATS: Les souches de flambée invasive (type C) ont démontré une activité nématicide élevée, les souches de flambée non invasive (type G), une virulence intermédiaire et les isolats de colonisation non liés à la flambée, une avirulence ou une virulence faible dans le modèle de C elegans, ce qui se traduit par des taux de suppression moyens de 93,0 %, de 61,0 % et de 14,4 % le jour 9, respectivement, dans ces trois groupes de souches. Divers groupes de souches de SASM possédaient leur propre profil génétique unique et des profils géniques de virulence, mais tous les isolats du même groupe (type C ou type G) ont partagé des caractéristiques génétiques identiques et des schémas de virulence génique. CONCLUSIONS: La présente évaluation en insu a démontré que les activités nématicides des souches de SASM étaient bien corrélées avec la manifestation clinique lors d'une flambée de SASM à l'USIN, ce qui étaye la solidité du C elegans comme modèle hôte pour étudier la pathogenèse du S aureus.

3.
BMJ Qual Saf ; 28(1): 32-38, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-29844230

RESUMO

BACKGROUND: Prevention of healthcare-associated urinary tract infection (UTI) has been the focus of a national effort, yet appropriate indications for insertion and removal of urinary catheters (UC) among surgical patients remain poorly defined. METHODS: We developed and implemented a standardised approach to perioperative UC use to reduce postsurgical UTI including standard criteria for catheter insertion, training of staff to insert UC using sterile technique and standardised removal in the operating room and surgical unit using a nurse-initiated medical directive. We performed an interrupted time series analysis up to 2 years following intervention. The primary outcome was the proportion of patients who developed postsurgical UTI within 30 days as measured by the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP). Process measures included monthly UC insertions, removals in the operating room and UC days per patient-days on surgical units. RESULTS: At baseline, 22.5% of patients were catheterised for surgery, none were removed in the operating room and catheter-days per patient-days were 17.4% on surgical units. Following implementation of intervention, monthly catheter removal in the operating room immediately increased (range 12.2%-30.0%) while monthly UC insertion decreased more slowly before being sustained below baseline for 12 months (range 8.4%-15.6%). Monthly catheter-days per patient-days decreased to 8.3% immediately following intervention with a sustained shift below the mean in the final 8 months. Postsurgical UTI decreased from 2.5% (95% CI 2.0-3.1%) to 1.4% (95% CI 1.1-1.9; p=0.002) during the intervention period. CONCLUSIONS: Standardised perioperative UC practices resulted in measurable improvement in postsurgical UTI. These appropriateness criteria for perioperative UC use among a broad range of surgical services could inform best practices for hospitals participating in ACS NSQIP.


Assuntos
Infecções Relacionadas a Cateter/prevenção & controle , Assistência Perioperatória , Melhoria de Qualidade , Cateterismo Urinário/normas , Infecções Relacionadas a Cateter/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Ontário/epidemiologia , Vigilância da População
4.
J Matern Fetal Neonatal Med ; 21(1): 53-7, 2008 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18175244

RESUMO

OBJECTIVES: To ascertain the incidence, and compare the clinical characteristics, laboratory parameters, and immediate mortality of neonates with early-onset (symptomatic and asymptomatic) and late-onset group B streptococcal (GBS) disease. METHODS: A chart review of 81 neonates with GBS disease (either blood and/or cerebrospinal fluid culture-proven) born between 1995 and 2002 admitted to two tertiary care perinatal centers in Toronto was conducted. Clinical characteristics were compared for (1) asymptomatic early-onset, symptomatic early-onset, and late-onset GBS disease and (2) survivors and non-survivors. RESULTS: The incidence of GBS disease was 1.13/1000 live births. One or more antepartum or intrapartum predisposing factors were recognized in 62% of cases. Early-onset was noted in 65 (80%) neonates (23 asymptomatic and 42 symptomatic). All full-term infants survived. The mortality was 6% and was confined to preterm neonates with early symptomatic disease who presented with shock and had thrombocytopenia. CONCLUSION: Antepartum or intrapartum known predisposing risk factors of GBS disease were lacking in one third of patients. Patients who died were preterm infants in the early symptomatic group.


Assuntos
Bacteriemia , Doenças do Recém-Nascido , Meningite , Infecções Estreptocócicas/mortalidade , Infecções Estreptocócicas/fisiopatologia , Streptococcus agalactiae/patogenicidade , Adulto , Bacteriemia/microbiologia , Bacteriemia/mortalidade , Feminino , Humanos , Incidência , Recém-Nascido , Doenças do Recém-Nascido/microbiologia , Doenças do Recém-Nascido/mortalidade , Recém-Nascido Prematuro , Meningite/microbiologia , Meningite/mortalidade , Ontário/epidemiologia , Gravidez , Estudos Retrospectivos , Fatores de Risco , Choque , Infecções Estreptocócicas/diagnóstico , Trombocitopenia
6.
Healthc Q ; 10(2): 81-6, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17491572

RESUMO

The purpose of this evaluation is to assess the effectiveness of the modifications made by the University of Toronto Postgraduate Medical Education to improve medical trainee compliance with the immunization standards set forth in national guidelines, provincial regulations and protocols and university policy. Trainee compliance with immunization requirements were evaluated as of January 2003, 2004 and 2005. Statistically significant increases in compliance rates for all required immunizations--hepatitis B virus, measles, rubella and chicken pox--and tuberculosis skin tests were observed. University of Toronto postgraduate medical trainees are now highly compliant with the Hospital Management Regulation 965 of the Ontario Public Hospitals Act, Canadian Immunization Guide, Public Health Agency of Canada guidelines for prevention and control of occupational infections in healthcare and the University of Toronto Faculty of Medicine immunization policy.


Assuntos
Centros Médicos Acadêmicos/legislação & jurisprudência , Educação de Pós-Graduação em Medicina , Fidelidade a Diretrizes , Programas de Imunização/estatística & dados numéricos , Internato e Residência , Corpo Clínico Hospitalar/legislação & jurisprudência , Vigilância da População , Vacinação/estatística & dados numéricos , Patógenos Transmitidos pelo Sangue , Infecção Hospitalar/prevenção & controle , Medicina Baseada em Evidências , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Programas de Imunização/legislação & jurisprudência , Transmissão de Doença Infecciosa do Profissional para o Paciente/prevenção & controle , Masculino , Ontário , Guias de Prática Clínica como Assunto , Avaliação de Programas e Projetos de Saúde
7.
Am J Infect Control ; 45(3): 295-297, 2017 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-27765295

RESUMO

The acquisition of methicillin-resistant Staphylococcus aureus (MRSA) after exposure to patients colonized or infected with MRSA was assessed. Among contacts with complete surveillance screening, the rate of acquisition was 5.7% and was lower in those identified postdischarge (17/683, 2.5%) compared with those tested in the immediate postexposure period (62/706, 8.8%).


Assuntos
Portador Sadio/epidemiologia , Infecções Comunitárias Adquiridas/epidemiologia , Transmissão de Doença Infecciosa , Staphylococcus aureus Resistente à Meticilina/isolamento & purificação , Infecções Estafilocócicas/epidemiologia , Portador Sadio/microbiologia , Infecções Comunitárias Adquiridas/microbiologia , Infecções Comunitárias Adquiridas/transmissão , Monitoramento Epidemiológico , Humanos , Infecções Estafilocócicas/microbiologia , Infecções Estafilocócicas/transmissão
8.
Infect Control Hosp Epidemiol ; 38(2): 147-153, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27834161

RESUMO

BACKGROUND Hip and knee arthroplasty infections are associated with considerable healthcare costs. The merits of reducing the postoperative surveillance period from 1 year to 90 days have been debated. OBJECTIVES To report the first pan-Canadian hip and knee periprosthetic joint infection (PJI) rates and to describe the implications of a shorter (90-day) postoperative surveillance period. METHODS Prospective surveillance for infection following hip and knee arthroplasty was conducted by hospitals participating in the Canadian Nosocomial Infection Surveillance Program (CNISP) using standard surveillance definitions. RESULTS Overall hip and knee PJI rates were 1.64 and 1.52 per 100 procedures, respectively. Deep incisional and organ-space hip and knee PJI rates were 0.96 and 0.71, respectively. In total, 93% of hip PJIs and 92% of knee PJIs were identified within 90 days, with a median time to detection of 21 days. However, 11%-16% of deep incisional and organ-space infections were not detected within 90 days. This rate was reduced to 3%-4% at 180 days post procedure. Anaerobic and polymicrobial infections had the shortest median time from procedure to detection (17 and 18 days, respectively) compared with infections due to other microorganisms, including Staphylococcus aureus. CONCLUSIONS PJI rates were similar to those reported elsewhere, although differences in national surveillance systems limit direct comparisons. Our results suggest that a postoperative surveillance period of 90 days will detect the majority of PJIs; however, up to 16% of deep incisional and organ-space infections may be missed. Extending the surveillance period to 180 days could allow for a better estimate of disease burden. Infect Control Hosp Epidemiol 2017;38:147-153.


Assuntos
Artroplastia de Quadril/efeitos adversos , Artroplastia do Joelho/efeitos adversos , Infecção Hospitalar/epidemiologia , Infecções Relacionadas à Prótese/epidemiologia , Infecções Estafilocócicas/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Canadá/epidemiologia , Feminino , Hospitais/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Estudos Prospectivos , Infecções Relacionadas à Prótese/microbiologia , Staphylococcus aureus/isolamento & purificação , Fatores de Tempo
9.
Infect Control Hosp Epidemiol ; 27(5): 473-8, 2006 May.
Artigo em Inglês | MEDLINE | ID: mdl-16671028

RESUMO

OBJECTIVE: To review the severe acute respiratory syndrome (SARS) infection control practices, the types of exposure to patients with SARS, and the activities associated with treatment of such patients among healthcare workers (HCWs) who developed SARS in Toronto, Canada, after SARS-specific infection control precautions had been implemented. METHODS: A retrospective review of work logs and patient assignments, detailed review of medical records of patients with SARS, and comprehensive telephone-based interviews of HCWs who met the case definition for SARS after implementation of infection control precautions. RESULTS: Seventeen HCWs from 6 hospitals developed disease that met the case definition for SARS after implementation of infection control precautions. These HCWs had a mean age (+/-SD) of 39+/-2.3 years. Two HCWs were not interviewed because of illness. Of the remaining 15, only 9 (60%) reported that they had received formal infection control training. Thirteen HCWs (87%) were unsure of proper order in which personal protective equipment should be donned and doffed. Six HCWs (40%) reused items (eg, stethoscopes, goggles, and cleaning equipment) elsewhere on the ward after initial use in a room in which a patient with SARS was staying. Use of masks, gowns, gloves, and eyewear was inconsistent among HCWs. Eight (54%) reported that they were aware of a breach in infection control precautions. HCWs reported fatigue due to an increased number and length of shifts; participants worked a median of 10 shifts during the 10 days before onset of symptoms. Seven HCWs were involved in the intubation of a patient with SARS. One HCW died, and the remaining 16 recovered. CONCLUSION: Multiple factors were likely responsible for SARS in these HCWs, including the performance of high-risk patient care procedures, inconsistent use of personal protective equipment, fatigue, and lack of adequate infection control training.


Assuntos
Pessoal de Saúde , Controle de Infecções/métodos , Exposição Ocupacional , Síndrome Respiratória Aguda Grave/epidemiologia , Coronavírus Relacionado à Síndrome Respiratória Aguda Grave , Adulto , Canadá , Análise por Conglomerados , Feminino , Humanos , Transmissão de Doença Infecciosa do Paciente para o Profissional , Entrevistas como Assunto , Masculino , Máscaras , Pessoa de Meia-Idade , Roupa de Proteção , Fatores de Risco , Síndrome Respiratória Aguda Grave/diagnóstico , Síndrome Respiratória Aguda Grave/virologia
10.
J Hosp Med ; 11(12): 862-864, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27378510

RESUMO

Physicians are notorious for poor hand hygiene (HH) compliance. We wondered if lower performance by physicians compared with other health professionals might reflect differences in the Hawthorne effect. We introduced covert HH observers to see if performance differences between physicians and nurses decreased and to gain further insights into physician HH behaviors. Following training and validation with a hospital HH auditor, 2 students covertly measured HH during clinical rotations. Students rotated off clinical services every week to increase exposure to different providers and minimize risk of exposing the covert observation. We compared covertly measured HH compliance with data from overt observation by hospital auditors during the same time period. Covert observation produced much lower HH compliance than recorded by hospital auditors during the same time period: 50.0% (799/1597) versus 83.7% (2769/3309) (P < 0.0002). The difference in physician compliance between hospital auditors and covert observers was 19.0% (73.2% vs 54.2%); for nurses this difference was much higher at 40.7% (85.8% vs 45.1%) (P < 0.0001). Physician trainees showed markedly better compliance when attending staff cleaned their hands compared with encounters when attending did not (79.5% vs 18.9%; P < 0.0002). Our study suggests that traditional HH audits not only overstate HH performance overall, but can lead to inaccurate inferences about performance by professional groupings due to relative differences in the Hawthorne effect. We suggest that future improvement efforts will rely on more accurate HH monitoring systems and strong attending physician leadership to set an example for trainees. Journal of Hospital Medicine 2015;11:862-864. © 2015 Society of Hospital Medicine.


Assuntos
Fidelidade a Diretrizes/normas , Higiene das Mãos/estatística & dados numéricos , Enfermeiras e Enfermeiros/estatística & dados numéricos , Médicos/normas , Infecção Hospitalar , Hospitais , Humanos , Controle de Infecções/normas , Corpo Clínico Hospitalar
11.
Infect Control Hosp Epidemiol ; 26(2): 134-7, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15756882

RESUMO

OBJECTIVE: The four hospitals assessed in this study use active surveillance cultures for methicillin-resistant Staphylococcus aureus (MRSA) and contact precautions for MRSA-positive patients as part of routine infection control practices. The objective of this study was to determine whether nosocomial acquisition of MRSA decreased in these hospitals during an outbreak of severe acute respiratory syndrome (SARS) when barrier precautions were routinely used for all patients. DESIGN: Retrospective cohort study. SETTING: Three tertiary-care hospitals (a 1100-bed hospital; a 500-bed hospital; and an 823-bed hospital) and a 430-bed community hospital, each located in Toronto, Ontario, Canada. PATIENTS: All admitted patients were included. RESULTS: The nosocomial rate of MRSA in all four hospitals combined during the SARS outbreak (3.7 per 10,000 patient-days) was not significantly different from that before (4.7 per 10,000 patient-days) or after (3.4 per 10,000 patient-days) the outbreak (P = .30 and P = .76, respectively). The nosocomial rate of MRSA after the outbreak was significantly lower than that before the outbreak (P = .003). Inappropriate reuse of gloves and gowns and failure to wash hands between patients on non-SARS wards were observed during the outbreak. Increased attention was paid to infection control education following the outbreak. CONCLUSIONS: Inappropriate reuse of gloves and gowns and failure to wash hands between patients may have contributed to transmission of MRSA during the SARS outbreak. Attention should be paid to training healthcare workers regarding the appropriate use of precautions as a means to protect themselves and patients.


Assuntos
Infecção Hospitalar/epidemiologia , Surtos de Doenças , Controle de Infecções/métodos , Resistência a Meticilina , Vigilância da População/métodos , Síndrome Respiratória Aguda Grave/epidemiologia , Infecções Estafilocócicas/epidemiologia , Staphylococcus aureus/isolamento & purificação , Infecção Hospitalar/prevenção & controle , Humanos , Ontário/epidemiologia , Prevalência , Estudos Retrospectivos , Infecções Estafilocócicas/transmissão
12.
Am J Infect Control ; 43(10): 1112-3, 2015 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-26190387

RESUMO

The task-oriented nurse acuity system (TONAS) has long been used to calculate nursing care needs on hospital patient units, and include nursing documentation on indwelling urinary catheter use. We performed a 2500-patient validation study of our organization's TONAS, which demonstrated high interrater reliability with manual audits (κ >0.92). For institutions that continue to rely on manual surveillance of urinary catheter use, a TONAS may represent a reliable method of automated surveillance.


Assuntos
Infecções Relacionadas a Cateter/epidemiologia , Cateteres de Demora/efeitos adversos , Cateteres de Demora/estatística & dados numéricos , Monitoramento Epidemiológico , Cateterismo Urinário/métodos , Cateteres Urinários/efeitos adversos , Infecções Urinárias/epidemiologia , Humanos , Cateteres Urinários/estatística & dados numéricos
13.
Infect Control Hosp Epidemiol ; 25(6): 477-80, 2004 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15242195

RESUMO

OBJECTIVE: To identify risk factors associated with the development of surgical-site infection (SSI) following total knee arthroplasty (TKA). DESIGN: A case-control study. SETTING: A 1,100-bed, university-affiliated, tertiary-care teaching hospital. METHODS: Case-patients with SSI occurring up to 1 year following primary TKA performed between January 1999 and December 2001 were identified prospectively by infection control practitioners using National Nosocomial Infections Surveillance (NNIS) System methods. Three control-patients were selected for each case-patient, matched by date of surgery. Stepwise logistic regression analysis was used to determine the relation of potential risk factors to the development of infection. RESULTS: Twenty-two patients with infections (6 superficial and 16 deep) were identified. Infection rates per year were 0.95%, 1.07%, and 1.19% in 1999, 2000, and 2001, respectively. Logistic regression analysis identified two variables independently associated with the development of infection: the use of closed suction drainage (odds ratio [OR], 7.0; 95% confidence interval [CI95], 2.1-25.0; P = .0015) and increased international normalized ratio (INR) (OR, 2.4; CI95, 1.1-5.7; P = .035). Factors not statistically associated with the development of infection included age, NNIS System risk index score, presence of various comorbidities, surgeon, duration of procedure or tourniquet time, type of bone cement or prosthesis used, or receipt of blood product transfusions. CONCLUSIONS: The use of closed suction drainage and a high postoperative INR were associated with the development of SSI following TKA. Avoiding the use of surgical drains and careful monitoring of anticoagulant prophylaxis in patients undergoing TKA should reduce the risk of infection.


Assuntos
Anticoagulantes/farmacologia , Artroplastia do Joelho/efeitos adversos , Infecções Bacterianas/epidemiologia , Infecção Hospitalar/epidemiologia , Hospitais de Ensino/estatística & dados numéricos , Coeficiente Internacional Normatizado/normas , Sucção/efeitos adversos , Infecção da Ferida Cirúrgica/epidemiologia , Adulto , Idoso , Antibioticoprofilaxia , Anticoagulantes/normas , Infecções Bacterianas/prevenção & controle , Estudos de Casos e Controles , Infecção Hospitalar/microbiologia , Infecção Hospitalar/prevenção & controle , Feminino , Humanos , Modelos Logísticos , Masculino , Prontuários Médicos , Pessoa de Meia-Idade , Ontário/epidemiologia , Pré-Medicação , Fatores de Risco , Vigilância de Evento Sentinela , Sucção/estatística & dados numéricos , Infecção da Ferida Cirúrgica/microbiologia , Infecção da Ferida Cirúrgica/prevenção & controle , Fatores de Tempo
14.
Infect Control Hosp Epidemiol ; 23(5): 261-7, 2002 May.
Artigo em Inglês | MEDLINE | ID: mdl-12026151

RESUMO

OBJECTIVES: To describe the investigation and management of an outbreak due to multiresistant Acinetobacter baumannii and to determine risk factors for acquisition of the organism. SETTING: A 14-bed regional burn unit in a Canadian tertiary-care teaching hospital. DESIGN: Case-control study with multivariate analysis of potential risk factors using logistic regression analysis. Surveillance cultures were obtained from the hospital environment, from noninfected patients, and from healthcare providers. RESULTS: A total of 31 (13%) of 247 patients with acute burn injuries acquired multiresistant A. baumannii between December 1998 and March 2000; 18 (58%) of the patients were infected. The organism was recovered from the hospital environment and the hands of healthcare providers. Significant risk factors for acquisition of multiresistant A. baumannii were receipt of blood products (odds ratio [OR], 10.8; 95% confidence interval [CI95], 3.4 to 34.4; P < .001); procedures performed in the hydrotherapy room (OR, 4.1; CI95, 1.3 to 13.1; P = .02); and increased duration of mechanical ventilation (OR, 1.1 per day; CI95, 1.0 to 1.1; P= .02). INTERVENTIONS: Improved compliance with hand hygiene, strict patient isolation, meticulous environmental cleaning, and temporary closure of the unit to new admissions. CONCLUSIONS: Acquisition of multiresistant A. baumannii was likely multifactorial, related to environmental contamination and contact with transiently colonized healthcare providers. Control measures addressing these potential sources of multiresistant A. baumannii were successful in terminating the outbreak. Ongoing surveillance and continued attention to hand hygiene and adequate environmental cleaning are essential to prevent recurrent outbreaks due to antibiotic-resistant bacteria in burn units.


Assuntos
Infecções por Acinetobacter/etiologia , Infecções por Acinetobacter/prevenção & controle , Acinetobacter baumannii , Unidades de Queimados , Infecção Hospitalar/etiologia , Infecção Hospitalar/prevenção & controle , Surtos de Doenças/prevenção & controle , Surtos de Doenças/estatística & dados numéricos , Farmacorresistência Bacteriana Múltipla , Infecções por Acinetobacter/epidemiologia , Transfusão de Componentes Sanguíneos/efeitos adversos , Queimaduras/complicações , Estudos de Casos e Controles , Infecção Hospitalar/epidemiologia , Monitoramento Ambiental/normas , Monitoramento Epidemiológico , Feminino , Desinfecção das Mãos/normas , Hospitais de Ensino , Zeladoria Hospitalar/normas , Humanos , Hidroterapia/efeitos adversos , Controle de Infecções/métodos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Ontário/epidemiologia , Fatores de Risco
15.
J Am Geriatr Soc ; 50(4): 608-16, 2002 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-11982659

RESUMO

OBJECTIVES: To describe the experience of Ontario long-term care facilities that used oseltamivir during influenza outbreaks in 1999/2000. DESIGN: Case series. SETTING: Ten Ontario long-term care facilities for older people and their residents. PARTICIPANTS: Older residents of long-term care facilities. INTERVENTION: Oseltamivir for treatment or prophylaxis during 11 influenza outbreaks in 1999/2000. MEASUREMENTS: Control of outbreaks; pneumonia, hospitalization, and death complicating acute influenza. RESULTS: All outbreaks were due to influenza A//H3N2/Sydney/05/97. One facility elected to use oseltamivir for treatment and amantadine for prophylaxis. The remaining nine facilities (10 outbreaks) recommended oseltamivir for treatment and prophylaxis (after amantadine failure in five and as primary prophylaxis in five). Use of oseltamivir was associated with termination of the outbreak in all eight evaluable outbreaks. Overall, 178/185 (96%) case-residents met the case definition of influenza and had complete data for evaluation. Of these, 63 (35%) were treated with antibiotics, 37 (21%) were diagnosed with pneumonia, 19 (11%) were hospitalized, and 16 (9%) died. Compared with residents receiving no therapy or who became ill while taking amantadine, residents who received oseltamivir within 48 hours of the onset of symptoms were less likely to be prescribed antibiotics, to be hospitalized, or to die (P <.05 for each outcome). These differences persisted and remained statistically significant when corrected for influenza immunization status. A total of 730 residents received oseltamivir prophylaxis for a median of 9 days (range 5-12). Of these, side effects were identified in 30 (4.1%), the most common being diarrhea (12 residents, 1.6%), cough (5, 0.7%), confusion (4, 0.5%) and nausea (4, 0.5%). CONCLUSIONS: Oseltamivir is safe and appears to be effective when used as treatment or prophylaxis to control outbreaks of influenza in older nursing home residents.


Assuntos
Acetamidas/uso terapêutico , Amantadina/uso terapêutico , Antivirais/uso terapêutico , Surtos de Doenças , Vacinas contra Influenza/administração & dosagem , Influenza Humana/tratamento farmacológico , Casas de Saúde , Acetamidas/efeitos adversos , Idoso , Idoso de 80 Anos ou mais , Antivirais/efeitos adversos , Feminino , Humanos , Influenza Humana/epidemiologia , Influenza Humana/prevenção & controle , Assistência de Longa Duração , Masculino , Pessoa de Meia-Idade , Ontário/epidemiologia , Oseltamivir , Resultado do Tratamento
17.
Otol Neurotol ; 23(4): 550-4, 2002 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-12170160

RESUMO

BACKGROUND: Meningitis is the most common life-threatening infection occurring as an early postoperative complication of neurotologic surgery. From January to March 2001, Staphylococcus aureus intracranial infection developed in three patients; two cases were consecutive. METHODS: All staff members involved in surgery on any of the three patients had nasal swabs for S. aureus. The three patient isolates and all S. aureus isolates from staff members were typed by pulsed-field gel electrophoresis. Operating room procedures were reviewed. RESULTS: All three patient isolates were identical by pulsed-field gel electrophoresis. Six staff members (40%) were found to be S. aureus carriers. The isolate from one staff members was identical to the patient isolates. A procedure audit of the operating room revealed several breaks in recommended practice. The staff carrier was immediately removed from patient care duties, given decolonization therapy, and treated for chronic rhinosinusitis. Practice changes in the operating room were implemented. CONCLUSIONS: S. aureus remains a common cause of surgical site infections. S. aureus carriage is common, and carriers with intercurrent respiratory infections have increased shedding and are a higher risk to patients. Proper use of barrier devices and consistent hand hygiene reduce bacterial contamination of the wound. Current operating room technology involves technical personnel not traditionally trained in operating room procedures. Epidemiologic investigation may be delayed if operating room records are incomplete with respect to these personnel. Molecular typing of bacterial isolates can identify common source outbreaks and effectively focus investigations.


Assuntos
Encefalopatias/epidemiologia , Impressões Digitais de DNA , Surtos de Doenças , Infecções Estafilocócicas/epidemiologia , Infecção da Ferida Cirúrgica/epidemiologia , Adulto , Encefalopatias/etiologia , Encefalopatias/genética , Neoplasias Encefálicas/cirurgia , Portador Sadio , Otopatias/cirurgia , Orelha Média , Feminino , Humanos , Masculino , Corpo Clínico , Salas Cirúrgicas , Infecções Estafilocócicas/etiologia , Infecções Estafilocócicas/genética , Infecções Estafilocócicas/transmissão , Infecção da Ferida Cirúrgica/etiologia , Infecção da Ferida Cirúrgica/genética
18.
Plast Reconstr Surg ; 109(7): 2242-4; discussion 2245-6, 2002 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12045544

RESUMO

The subject of microbial growth within the saline medium of prosthetic breast implants has been one of great controversy in recent years. Although several articles have described microbial growth within the tissue surrounding implanted breast prostheses, few have attempted to determine the possibility of such contamination of the luminal saline. The authors studied the intraluminal saline medium of a series of explanted breast prostheses with the objective of identifying any microbial contamination. Over a 6-month period, a consecutive series of saline-filled breast implants and tissue expanders were removed from 37 patients. Under the supervision of a microbiologist, saline extracted from each implant was subjected to bacterial and fungal cultures, Gram staining, and acid-fast staining. A total of 24 saline-filled breast implants were removed from 15 patients, and 32 saline-filled tissue expanders were removed from 22 patients. The average length of implantation was 28.1 months for the implants and 7.1 months for the expanders. None of the saline within the implants or expanders within our series displayed any evidence of microbial contamination. These results suggest that microbial contamination of the luminal saline of prosthetic breast implants is an extremely unlikely event.


Assuntos
Implantes de Mama/microbiologia , Cloreto de Sódio , Dispositivos para Expansão de Tecidos/microbiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Bactérias/crescimento & desenvolvimento , Remoção de Dispositivo , Feminino , Fungos/crescimento & desenvolvimento , Humanos , Pessoa de Meia-Idade
19.
Am J Infect Control ; 41(6): 509-12, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23266384

RESUMO

BACKGROUND: This study examined the epidemiology of an outbreak of Staphylococcus aureus surgical site infections (SSI) after cardiovascular surgery, and analyzed risk factors for S aureus SSIs. METHODS: This was a retrospective case-control study to determine risk factors for S aureus SSI in 38 patients who developed S aureus SSI during the outbreak period, compared with age-, sex-, and procedure-matched controls. S aureus strains were typed by pulsed-field gel electrophoresis. RESULTS: A total of 38 patients had S aureus SSI. Pulsed-field gel electrophoresis identified transmission of 3 S aureus clones (2 MSSA clones and 1 MRSA clone). Twenty-one health care workers were carriers of outbreak strains. In multivariate analysis, the significant risk factors for S aureus SSI were previous cardiac surgery (odds ratio, 7.41; 95% confidence interval, 1.05-52.16) and long procedure duration (odds ratio, 1.49; 95% confidence interval, 1.00-2.21). CONCLUSIONS: This outbreak demonstrates evidence of nosocomial transmission of 3 clones of S aureus in the setting of incomplete compliance with recommended standard perioperative infection control measures, associated with a high prevalence of staff carriage of the predominant outbreak strains.


Assuntos
Infecção Hospitalar/epidemiologia , Infecção Hospitalar/prevenção & controle , Surtos de Doenças/prevenção & controle , Infecções Estafilocócicas/epidemiologia , Infecção da Ferida Cirúrgica/epidemiologia , Idoso , Canadá/epidemiologia , Procedimentos Cirúrgicos Cardiovasculares/efeitos adversos , Procedimentos Cirúrgicos Cardiovasculares/estatística & dados numéricos , Estudos de Casos e Controles , Causalidade , Feminino , Humanos , Masculino , Staphylococcus aureus Resistente à Meticilina/isolamento & purificação , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Infecções Estafilocócicas/prevenção & controle , Infecção da Ferida Cirúrgica/microbiologia
20.
Am J Infect Control ; 41(3): 240-4, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23073484

RESUMO

BACKGROUND: The proper use of personal protective equipment (PPE) by health care workers (HCWs) is vital in preventing the spread of infection and has implications for HCW safety. METHODS: An observational study was performed in 11 hospitals participating in the Canadian Nosocomial Infection Surveillance Program between January 7 and March 30, 2011. Using a standardized data collection tool, observers recorded HCWs selecting and removing PPE and performing hand hygiene on entry into the rooms of febrile respiratory illness patients. RESULTS: The majority of HCWs put on gloves (88%, n = 390), gown (83%, n = 368), and mask (88%, n = 386). Only 37% (n = 163) were observed to have put on eye protection. Working in a pediatric unit was significantly associated with not wearing eye protection (7%), gown (70%), gloves (77%), or mask (79%). Half of the observed HCWs (54%, n = 206) removed their PPE in the correct sequence. Twenty-six percent performed hand hygiene after removing their gloves, 46% after removing their gown, and 57% after removing their mask and/or eye protection. CONCLUSION: Overall adherence with appropriate PPE use in health care settings involving febrile respiratory illness patients was modest, particularly on pediatric units. Interventions to improve PPE use should be targeted toward the use of recommended precautions (eg, eye protection), HCWs working in pediatric units, the correct sequence of PPE removal, and performing hand hygiene.


Assuntos
Fidelidade a Diretrizes , Pessoal de Saúde , Exposição Ocupacional/prevenção & controle , Equipamentos de Proteção/estatística & dados numéricos , Canadá , Higiene das Mãos/métodos , Hospitais , Humanos
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa