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PubMed2005

Using real time process measurements to reduce catheter related bloodstream infections in the intensive care unit.

PROBLEM: Measuring a process of care in real time is essential for continuous quality improvement (CQI). Our inability to measure the process of central venous catheter (CVC) care in real time prevented CQI efforts aimed at reducing catheter related bloodstream infections (CR-BSIs) from these devices. DESIGN: A system was developed for measuring the process of CVC care in real time. We used these new process measurements to continuously monitor the system, guide CQI activities, and deliver performance feedback to providers. SETTING: Adult medical intensive care unit (MICU). KEY MEASURES FOR IMPROVEMENT: Measured process of CVC care in real time; CR-BSI rate and time between CR-BSI events; and performance feedback to staff. STRATEGIES FOR CHANGE: An interdisciplinary team developed a standardized, user friendly nursing checklist for CVC insertion. Infection control practitioners scanned the completed checklists into a computerized database, thereby generating real time measurements for the process of CVC insertion. Armed with these new process measurements, the team optimized the impact of a multifaceted intervention aimed at reducing CR-BSIs. EFFECTS OF CHANGE: The new checklist immediately provided real time measurements for the process of CVC insertion. These process measures allowed the team to directly monitor adherence to evidence-based guidelines. Through continuous process measurement, the team successfully overcame barriers to change, reduced the CR-BSI rate, and improved patient safety. Two years after the introduction of the checklist the CR-BSI rate remained at a historic low. LESSONS LEARNT: Measuring the process of CVC care in real time is feasible in the ICU. When trying to improve care, real time process measurements are an excellent tool for overcoming barriers to change and enhancing the sustainability of efforts. To continually improve patient safety, healthcare organizations should continually measure their key clinical processes in real time.

Adult↗

PubMed2005

Handheld computer surveillance: shoe-leather epidemiology in the "palm" of your hand.

BACKGROUND: Although urinary tract infections (UTIs) are the most common nosocomial infection, active UTI surveillance is often not feasible for infection control departments. METHODS: As part of an ongoing urinary catheter evaluation, we investigated the accuracy and cost-effectiveness of using handheld personal digital assistants (PDA) and computer-based UTI surveillance in comparison with traditional surveillance of UTIs among medical intensive care unit (MICU) patients. From September 22, 2000, to October 22, 2000, an infection control practitioner (ICP) actively surveyed all MICU patients who had a urinary catheter to determine criteria for a nosocomial UTI as defined by the Centers for Disease Control and Prevention (CDC). Research assistants visited the unit each day to determine which patients had urinary catheters, and this information was uploaded to a database designed for laboratory-based UTI surveillance. Patients with a urinary catheter were included if admitted to the MICU for >48 hours and excluded if symptoms developed <48 hours after admission. RESULTS: Both data collection methods identified 8 UTIs within the 1-month period, with 3 UTIs meeting inclusion criteria. Traditional surveillance required 8 hours weekly, whereas the PDA-computer surveillance required 1-and-a-half hours weekly. Traditional surveillance correctly attributed all 3 UTIs to the MICU. The PDA-computer surveillance incorrectly attributed the location of 2 of the UTIs. In both cases, the UTI occurred less than 48 hours after the patient was transferred from the MICU. CONCLUSION: Our data demonstrate that PDA surveillance detects nosocomial UTIs efficiently and is a novel, timesaving technique that realizes a cost savings in the first year.

Catheters, Indwelling↗

PubMed2001

Prevention of influenza and pneumococcal pneumonia in Canadian long-term care facilities: how are we doing?

BACKGROUND: Influenza and pneumococcal pneumonia are serious health problems among elderly people and a major cause of death in long-term care facilities. We describe the results of serial surveys of vaccination coverage and influenza outbreak management in Canadian long-term care facilities over the last decade. METHODS: Cross-sectional surveys consisting of questionnaires mailed to all Canadian residential long-term care facilities for elderly people in 1991 and to a random sample of respondents in 1995 and 1999. RESULTS: The response rates were 83% (430/515) in 1995 and 75% (380/506) in 1999. In 1999 the mean reported rates of influenza vaccination were 83% among residents and 35% among staff, and the mean rate of pneumococcal vaccination among residents was 71%; all 3 rates were significantly higher than those in 1991. The rates were also higher in facilities with an infection control practitioner than in those without such an individual (88% v. 82% for influenza vaccination among residents [p < 0.001], 42% v. 35% for influenza vaccination among staff [p = 0.008] and 75% v. 63% for pneumococcal vaccination among residents [p < 0.001]). Obtaining consent for vaccination on admission to the facility was associated with higher influenza and pneumococcal vaccination rates among residents (p = 0.04 and p < 0.001 respectively). Facilities with higher influenza vaccination rates among residents and staff reported lower rates of influenza outbreaks (p = 0.08 and 0.03 respectively). Despite recommendations from the National Advisory Committee on Immunization, only 50% of the facilities had policies for amantadine prophylaxis during influenza A outbreaks. Amantadine was judged effective in controlling 76% of the influenza A outbreaks and was discontinued because of side effects in 3% of the residents. INTERPRETATION: Influenza and pneumococcal vaccination rates among residents and staff in Canadian long-term care facilities have increased over the last decade but remain suboptimal. Vaccination of residents and staff against influenza is associated with a reduced risk of influenza outbreaks. Amantadine is effective in controlling influenza outbreaks in long-term care facilities.

Aged↗

PubMed1997

Varied approaches to tuberculosis control in a multihospital system.

OBJECTIVES: To document the actual tuberculosis (TB) control policies and procedures in a nonoutbreak setting in a variety of hospitals. To determine if any particular practices are linked to higher rates of employee tuberculin skin-test conversion. DESIGN: Survey of hospital occupational health and infection control practitioners for the year 1994 regarding hospital TB policies. Review of hospital records to verify the number of patients with TB at each hospital and to verify the number of employees with positive tuberculin skin tests. Smoke-stick testing of negative-pressure ventilation rooms. SETTING: A 13-hospital health system in the Midwest. RESULTS: Hospitals ranged in size from 40 to 1,208 beds (median 220) and employed 150 to 6,500 workers (median 875). There were seven rural and six urban centers, including four teaching hospitals. All 13 hospitals had TB control plans, and all performed annual tuberculin skin testing on employees. Annual skin-test positivity rates ranged from 0% to 1.0% (median 0.3%). Negative-pressure ventilation rooms were available in 11 hospitals. The percentage of negative-pressure rooms with effective negative pressure ranged from 44% to 100% (median 95%). Three of the 13 hospitals used high-efficiency particulate air (HEPA) masks as primary personal respiratory protection, and 8 used dust-mist or dust-mist-fume masks. We found no relation between the type of face mask used, number of functional negative-pressure rooms, or hospital TB risk category, and employee skin-test conversion rates. CONCLUSIONS: Considerable variation existed in the TB control policies and procedures between hospitals, but employee TB skin-test conversion rates were low in all settings.

Cross Infection↗

PubMed2000

Association between implementation of CDC recommendations and ventilator-associated pneumonia at selected US hospitals.

BACKGROUND: To assess whether selected recommendations in the Centers for Disease Control and Prevention "Guideline for Prevention of Nosocomial Pneumonia" were being implemented and having an impact on the occurrence of ventilator-associated pneumonia (VAP) at US hospitals, we surveyed hospitals participating in the National Nosocomial Infections Surveillance (NNIS) system. METHODS: We mailed a questionnaire to the infection control practitioner of each NNIS hospital in 1995 and used data from the NNIS system to calculate annual rates of VAP. RESULTS: Of the 188 hospitals surveyed, 179 (95%) returned completed questionnaires. Of these, 175 (98%) had implemented the recommended change of mechanical-ventilator breathing circuits at 48-hour or greater intervals. Of 110 hospitals using the hygroscopic condenser-humidifiers or heat-moisture exchangers with ventilators, 102 (93%) changed the hygroscopic condenser-humidifiers or heat-moisture exchangers routinely, and of 98 hospitals using bubbling humidifiers, 96 (98%) used sterile water to fill these humidifiers. Other practices for which the guideline provides no recommendation and their frequency of use by NNIS hospitals include use of hygroscopic condenser-humidifiers or heat-moisture exchangers (110/179 [61%]) and use of bacterial filters in anesthesia machines (128/171 [61%]). There was a significant decrease in the VAP rate from 1987 to 1998. CONCLUSION: Most NNIS hospitals had implemented selected recommendations in the Centers for Disease Control and Prevention "Guideline for Prevention of Nosocomial Pneumonia" before the final publication of the revised guideline. Further studies are needed to assess the impact of these recommendations on the occurrence of VAP.

Anesthesiology↗

PubMed1987

Transmission of invasive Haemophilus influenzae type b disease in day care settings.

We prospectively studied the risk of secondary transmission of invasive Haemophilus influenzae type b (Hib) disease among children in day care in Oklahoma. We established a statewide surveillance system for the reporting of all forms of invasive Hib disease from physicians, clinical laboratories, county health departments, and infection control practitioners from all hospitals in and bordering Oklahoma. For the 2-year period March 15, 1984, to March 15, 1986, there were 409 culture-confirmed cases of invasive Hib disease in children 12 years of age or younger; 147 (37%) case-patients attended day care. When a case-patient attended day care during the week before illness, we prospectively identified and observed all classroom contacts (n = 2147) for the next 60 days. Of 1253 classroom contacts younger than 4 years of age, seven (0.6%) secondary cases were identified. Isolates from all paired index and secondary cases had identical outer membrane protein (OMP) patterns. Strains causing primary disease were indistinguishable by OMP distribution from those causing secondary disease. Of 685 classroom contacts younger than 2 years of age from whom rifampin use was ascertained, five (1.7%) of 292 who did not receive rifampin became secondary cases, compared with one (0.3%) of 393 who received rifampin (rate ratio 6.7; 95% confidence limits 1.1, 42.5; P less than 0.05). Of 495 classroom contacts 24 to 47 months of age for whom rifampin use was ascertained, one (0.5%) of 194 who did not receive rifampin became a secondary case, compared with none of 301 who received rifampin. This experience indicates that secondary transmission of invasive Hib disease can be appreciable in day care settings, particularly in children younger than 2 years of age, and that rifampin prophylaxis reduces this risk.

Child↗

PubMed1988

Infection control in correctional facilities: a new challenge.

The potential for communicable disease transmission in a prison setting is high. Infection control programs in correctional facilities must be designed (1) to develop effective systems for identification, prevention, and control of communicable diseases, (2) to collect data in a systematized way, and (3) to ensure follow-up and coordination of health care after release. The role and activities in which the infection control practitioner must engage include surveillance and reporting, administration, education, and consultation with correction personnel, local health agencies, and health care workers. Specific tasks within each of these areas require modification to meet the unique needs of correctional facilities.

Adult↗

PubMed2005

Extracting information on pneumonia in infants using natural language processing of radiology reports.

Natural language processing (NLP) is critical for improvement of the healthcare process because it can encode clinical data in patient documents. Many clinical applications such as decision support require coded data to function appropriately. However, in order to be applicable for healthcare, performance must be adequate. A valuable automated application is the detection of infectious diseases, such as surveillance of pneumonia in newborns (e.g., neonates) because the disease produces significant rates of morbidity and mortality, and manual surveillance is challenging. Studies have demonstrated that automated surveillance using NLP is a useful adjunct to manual surveillance and an effective tool for infection control practitioners. This paper presents a study evaluating the feasibility of an NLP-based monitoring system to screen for healthcare-associated pneumonia in neonates. We estimated sensitivity, specificity, and positive predictive value by comparing results with clinicians' judgments. Sensitivity was 71% and specificity was 99%. Our results demonstrated that the automated method was feasible.

Database Management Systems↗

PubMed1999

What does a clinician expect from a microbiologist? Towards an effective joint policy.

What a clinician needs from a microbiologist and microbiological service depends on the specialty. To provide a diagnosis of infection, the service should organize and also follow-up the specimen transport, microbiological examination and antimicrobial susceptibility testing together with antigen detection and other modern test technology. A manual describing the local service and including guidelines should be placed in every department. At the same time a clinician should be familiar with clinical syndromes and causative micro-organisms, in order to be able to ask for the correct investigation. Only with continuous interchange of information by both parties is an effective joint policy possible in daily routine work.

Decision Making↗

PubMed1987

Survey on testing criteria and reporting methods for human immunodeficiency virus serologic tests in Veterans Administration Medical Centers.

Guidelines for the indications for use, requirements for consent, and mechanisms for reporting of serologic tests for human immunodeficiency virus (HIV) infection are not standardized. In trying to establish such guidelines for our hospital, we surveyed all Veterans Administration Medical Centers regarding their current approach to testing both patients and employees. Infection control practitioners from 67 hospitals representing 37 states responded. Patients are likely to be tested for diverse reasons, unlikely to be counseled about the test or be required to consent to it, and test results are given no special precautions. Although 66% of the respondents do not use any extra precautions concerning patient confidentiality, 80% utilize more stringent criteria for testing and result-reporting with employees than patients. Thus, while the majority of hospitals maintain that current modes of confidentiality are acceptable for patients, practice suggests that these modes are considered inadequate for employees.

Acquired Immunodeficiency Syndrome↗

PubMed2004

Reprocessing the bronchoscope: the challenges.

Spread of infection through the flexible bronchoscope is underrecognized and underreported. Prevention of bronchoscopy-induced infection requires increased vigilance by the physician, assiduous implementation of reprocessing protocols, and closer collaboration between bronchoscopy personnel, infection control practitioners, and instrument manufacturers. Patient safety depends on adequate disinfection of bronchoscopes and accessories used, as well as proper training of bronchoscopists, nurses, and ancillary staff. It is important to recognize that microbial transmission may occur via any part of instruments or anything in contact with the instruments including cleaning solutions, automated washers, and rinsing water. Numerous surveys have suggested poor adherence to published preventive guidelines. To address the challenges of reprocessing bronchoscopes, all users must comply with guidelines for cleaning and disinfection and each procedure should be performed with a clean, disinfected bronchoscope.

Journal Article↗

PubMed2006

Efficacy of environmental measures to decrease the risk of hospital-acquired aspergillosis in patients hospitalised in haematology wards.

This study evaluated a multidisciplinary strategy to decrease the rate of invasive pulmonary aspergillosis (IPA) among adult patients hospitalised in two haematology wards in a single 560-bed building at the University Hospital of Saint-Etienne. Upgrading of the air filtration system and construction of an air-lock chamber at the entrance to the unit were completed during 1994. In 1995, specific hygienic measures were introduced during hospital building work, including the use of plastic barriers, watering during demolition work, reduction of pedestrian traffic in construction areas, and the wearing of high-efficiency filtration masks by immunosuppressed patients when outside the protected unit. This strategy was evaluated by a prospective survey of IPA cases between 1993 and 2001, coupled with environmental surveillance. The number and risk-level of hospital renovation projects increased between 1995 and 2001 (p < 0.01). In parallel, the rate of IPA decreased globally in the haematology unit from 0.85% (1.19/1,000 patients) in 1993 to 0.28% (0.21/1,000 patients) in 2001. The incidence of IPA decreased significantly between 1993-1996 and 1997-2001 (p 0.02, Mann-Whitney test). These results show that a multidisciplinary approach involving engineers, infection control practitioners, mycologists and clinicians enables IPA rates among patients hospitalised in haematology wards to be significantly decreased.

Environmental Microbiology↗

PubMed1982

Blood culture cross contamination associated with a radiometric analyzer.

During a 9-day period in August 1980 in a New Jersey hospital, three pairs of consecutively numbered blood cultures from different patients were identified as positive for the same organism (two pairs of Klebsiella pneumoniae and one pair of group A Streptococcus), for each pair, both cultures were positive in the same atmosphere, both organisms had the same sensitivities, and the second of each pair grew at least 2 days after the first and was the only positive blood culture obtained from the patient. When the hospital laboratory discontinued use of its radiometric culture analyzer for 15 days, no more consecutive pairs of positive cultures occurred. Subsequent use of the machine for 9 days with a new power unit but the original circuit boards resulted in one more similar consecutive pair (Staphylococcus epidermidis). After replacement of the entire power unit, there were no further such pairs. Examination of the machine by the manufacturer revealed a defective circuit board which resulted in inadequate needle sterilization. Laboratories which utilize radiometric analyzers should be aware of the potential for cross contamination. Recognition of such events requires alert microbiologists and infection control practitioners and a record system in the bacteriology laboratory designed to identify such clusters.

Bacteria↗

PubMed2005

Online bioterrorism continuing medical education: development and preliminary testing.

OBJECTIVE: Education to achieve awareness and competency in responding to incidents of bioterrorism is important for health care professionals, especially emergency physicians and nurses, who are likely first points of medical contact. The authors describe the development of a computer-based approach to initial education, incorporating a screensaver to promote awareness and a Web-based approach to provide initial content competency in the areas of smallpox and anthrax. METHODS: Screensavers were developed and tested on emergency department rotating senior medical students and internal medicine interns. Conceptually, screensavers were designed as "billboards" for attracting attention to the educational domain. Five rotating images sequenced at five-second intervals incorporated a teaser question and an interactive toolbar. An interactive toolbar was linked to a Web site that provided content on smallpox and anthrax for hospital-based specialties (emergency physicians and nurses, infection control practitioners, pathologists, and radiologists). The content included both summary and comprehensive content as well as free continuing education credits in an online, specialty-specific, case-scenario format with remediation pop-up boxes. RESULTS: Formal testing indicated that the screensaver and Web site combination deployed on computers in the emergency department and the events of the fall of 2001 significantly increased the percentage of correct responses to five standardized bioterrorism questions. Formal evaluation with a randomized trial and long-term follow-up is ongoing. CONCLUSIONS: Screensavers and Web sites can be used to increase awareness of bioterrorism. Web-based education may provide an effective means of education for bioterrorism.

Awareness↗

PubMed2006

Severe pediatric influenza in California, 2003-2005: implications for immunization recommendations.

OBJECTIVE: The 2003-2004 influenza season was marked by both the emergence of a new drift "Fujian" strain of influenza A virus and prominent reports of increased influenza-related deaths in children in the absence of baseline data for comparison. In December 2003, the California Department of Health Services initiated surveillance of children who were hospitalized in California with severe influenza in an attempt to measure its impact and to identify additional preventive measures. METHODS: From December 2003 to May 2005, surveillance of children who were hospitalized in PICUs or dying in the hospital with laboratory evidence of influenza was performed by hospital infection control practitioners and local public health departments using a standardized case definition and reporting form. RESULTS: In the 2003-2004 and 2004-2005 influenza seasons, 125 and 35 cases, respectively, of severe influenza in children were identified in California. The mean and median age of cases were 3.1 years and 1.5 years, with breakdown as follows: < 6 months, 39 (24%); 6 to 23 months, 53 (33%); 2 to 4 years, 40 (25%); 5 to 11 years, 15 (9%); and 12 to 17 years, 13 (8%). Fifty-three percent (85 of 160) had an underlying medical condition(s), including a neurologic disorder (n = 36), chronic pulmonary disease (n = 26), genetic disorder (n = 19), cardiac disease (n = 18), prematurity (n = 14), immunocompromised status (n = 12), endocrine/renal disease (n = 2), and other (n = 1). Only 16% (15 of 96) of all patients had received influenza vaccination. Thirty-seven patients had an underlying illness that met existing Advisory Committee on Immunization Practices (ACIP) or American Academy of Pediatrics (AAP) recommendations for immunization, but only 8 had been vaccinated. CONCLUSIONS: More than 3 times as many children were reported to be hospitalized in intensive care with influenza in California during the 2003-2004 season compared with the 2004-2005 season. Because children who are younger than 6 months remain at highest risk for severe influenza yet cannot currently be immunized, development and validation of preventive measures for them (eg, maternal immunization, breastfeeding, immunization of young infants and their close contacts) are urgently needed. ACIP's recent recommendation for influenza vaccination of children with conditions that can compromise respiratory function (eg, cognitive dysfunction, spinal cord injuries, seizure disorders, other neuromuscular disorders) is further supported by the frequency of underlying neurologic disease in these cases of severe influenza. A significant proportion of children with severe influenza in California, including children who are aged 2 to 4 years or have underlying genetic syndromes or prematurity, would not have been routinely recommended for influenza vaccination in 2005-2006 ACIP and AAP recommendations, calling into question whether such guidelines should be expanded. Continued surveillance for severe influenza-related morbidity and mortality is important to measure the impact of influenza on children.

Adolescent↗

PubMed1990

Evaluation of active versus passive AIDS surveillance in Oregon.

We searched for unreported AIDS cases in Oregon through death certificate and medical record review, and enhanced infection control practitioner and physician surveillance. Fifty-six AIDS cases diagnosed between February 1, 1986 and January 31, 1987 were reported passively. Twenty-nine additional cases diagnosed during this time were retrospectively identified by active methods. Ninety percent of those 29 cases were diagnosed by physicians and cared for in hospitals that had previously reported cases. Completeness of reporting under the passive system was 64 percent.

Acquired Immunodeficiency Syndrome↗

PubMedDate not supplied

Custom procedure trays. An overview.

A new service industry has emerged to assemble and sterilize custom procedure trays for use in the hospital. CS and materials managers, OR supervisors, infection control practitioners and other hospital personnel are being asked to make a selection among many competing vendors. A methodology is needed to assist these managers in the decision making process. This article will define custom procedure trays and suggest criteria by which the selection process may be assisted.

Central Supply, Hospital↗

PubMed2003

Weekly versus daily changes of in-line suction catheters: impact on rates of ventilator-associated pneumonia and associated costs.

BACKGROUND: An earlier randomized, controlled trial showed that weekly or as-needed (as opposed to daily) changes of in-line suction catheters were associated with substantial cost savings, without a higher rate of ventilator-associated pneumonia (VAP). To examine the impact of decreasing the frequency of in-line suction catheter changes in our medical intensive care unit, we conducted an observational study, comparing the catheter costs and frequency of VAP during (1) a control period, during which in-line suction catheters were changed daily, and (2) a treatment period, during which the catheters were changed every 7 days or sooner if needed, for mechanical failure or soilage. METHODS: All adult patients admitted to our 18-bed medical intensive care unit were evaluated for the 3-month interval 1 year prior to the practice change (May through July 1998) and for the 3 months after implementing the new policy (May through July 1999). To avoid bias related to usual seasonal variation in VAP frequency, we also determined (via medical records) the VAP rate during May through July 1997. The occurrence of VAP was ascertained by an infection control practitioner, using criteria established by the Centers for Disease Control and applied in a standard fashion. The VAP rate was calculated as the mean number of VAPs per 100 ventilator-days for each 3-month interval. Use of ventilators, humidifiers, and non-heated-wire, disposable circuits was uniform during the study, as were policies regarding humidity, temperature settings, and frequency of routine ventilator circuit changes. RESULTS: During the control period 146 patients accounted for 1,075 ventilator-days and there were 2 VAPs (0.19 VAPs per 100 ventilator-days). During the treatment period 143 patients accounted for 1,167 ventilator-days and there were no VAPs. The mean +/- SD duration of in-line suction catheter use during the treatment period was 3.8 +/- 0.8 days, and 51% of the patients had the same catheter in place for > 3 days (range 4-9 days). The actual cost of catheters used during the treatment period was lower than during the control period ($1,330 vs $6,026), predicting annual catheter cost savings of $18,782. CONCLUSIONS: We conclude that (1) a policy of weekly (vs daily) change of in-line suction catheter is associated with substantial cost savings, with no significant increase in the frequency of VAP, and (2) to the extent that these findings confirm the results of prior studies they support a policy of changing in-line suction catheters weekly rather than daily.

Catheterization↗