Increasing the use of anti-inflammatory agents for acute asthma in the emergency department: experience with an asthma care map.

PURPOSE: Acute asthma is a common emergency department (ED) presentation and variation in its management is well recognized. The present study examined the use of an asthma care map (ACM) in one Canadian ED to improve adherence to acute asthma guidelines, emphasizing the use of systemic corticosteroids (SCSs) and inhaled corticosteroids (ICSs). METHODS: Three time periods were studied: the 15 months before ACM introduction (PRE), the 15 months following a three-month introduction of the ACM (POST(1)) and the 18 months after POST(1) (POST(2)). Randomly selected patient charts from each period were included from patients who were 18 to 60 years of age and presented with a primary diagnosis of acute asthma. A priori criteria were established to determine the degree of completion and success of the ACM. Primary outcomes included documentation, use of SCSs in the ED, and prescription of SCSs and ICSs at ED discharge. RESULTS: A total of 387 patient charts were included (PRE, n=150; POST(1), n=150; POST(2), n=87). Patient characteristics in the three groups were similar; however, patients in POST(1) and POST(2) showed higher use of newer agents than those in the PRE group. Overall, more women (n=209; 54%) than men were seen; the mean age was 32.4 years. The care map was used in 67% of cases during POST(1) and 70% during POST(2). The use of peak expiratory flow (PEF) was high during the PRE, POST(1) and POST(2) periods (91%, 89% and 91%, respectively); however, documentation of other markers of severity increased in the POST periods. Use of SCSs occurred earlier (P<0.01) and more often (57% PRE, 68% POST(1) and 75% POST(2); P<0.01) in the POST(1,2) periods than the PRE period. There was a significant increase in use of SCSs on discharge (55% PRE, 66% POST(1) and 69% POST(2); P<0.05), and prescription of ICSs significantly increased (24% PRE, 45% POST(1) and 61% POST(2); P<0.001) in the POST(1,2) periods. Discharge without any corticosteroids decreased over the three periods (32% PRE, 21% POST(1) and 17% POST(2); P<0.05). The length of stay in the ED increased over the study periods (181 min PRE, 209 min POST(1) and 265 min POST(2); P<0.01) and admissions were infrequent (9% PRE, 13% POST(1) and 6% POST(2); P=0.50). CONCLUSIONS: The present study provides evidence that the standardized ED ACM was widely accepted, improved chart documentation, improved some aspects of ED care and increased prescribing of discharge preventive medications.

Persistence, reproducibility, and cost-effectiveness of an intervention to improve the quality of osteoporosis care after a fracture of the wrist: results of a controlled trial.

INTRODUCTION: Older patients with fragility fractures are not commonly tested or treated for osteoporosis. Compared to usual care, a previously reported intervention led to 30% absolute increases in osteoporosis treatment within 6 months of wrist fracture. Our objective was to examine longer-term outcomes, reproducibility, and cost-effectiveness of this intervention. METHODS: We conducted an extended analysis of a non-randomized controlled trial with blinded ascertainment of outcomes that compared a multifaceted intervention to usual care controls. Patients >50 years with a wrist fracture treated in two Emergency Departments in the province of Alberta, Canada were included; those already treated for osteoporosis were excluded. Overall, 102 patients participated in this study (55 intervention and 47 controls; median age: 66 years; 78% were women). The interventions consisted of faxed physician reminders that contained osteoporosis treatment guidelines endorsed by opinion leaders and patient counseling. Controls received usual care; at 6-months post-fracture, when the original trial was completed, all controls were crossed-over to intervention. The main outcomes were rates of osteoporosis testing and treatment within 6 months (original study) and 1 year (delayed intervention) of fracture, and 1-year persistence with treatments started. From the perspective of the healthcare payer, the cost-effectiveness (using a Markov decision-analytic model) of the intervention was compared with usual care over a lifetime horizon. RESULTS: Overall, 40% of the intervention patients (vs. 10% of the controls) started treatment within 6 months post-fracture, and 82% (95%CI: 67-96%) had persisted with it at 1-year post-fracture. Delaying the intervention to controls for 6 months still led to equivalent rates of bone mineral density (BMD) testing (64 vs. 60% in the original study; p = 0.72) and osteoporosis treatment (43 vs. 40%; p = 0.77) as previously reported. Compared with usual care, the intervention strategy was dominant - per patient, it led to a $13 Canadian (U.S. $9) cost savings and a gain of 0.012 quality-adjusted life years. Base-case results were most sensitive to assumptions about treatment cost; for example, a 50% increase in the price of osteoporosis medication led to an incremental cost-effectiveness ratio of $24,250 Canadian (U.S. $17,218) per quality-adjusted life year gained. CONCLUSIONS: A pragmatic intervention directed at patients and physicians led to substantial improvements in osteoporosis treatment, even when delivered 6-months post-fracture. From the healthcare payer's perspective, the intervention appears to have led to both cost-savings and gains in life expectancy.

Prevention of bleeding after islet transplantation: lessons learned from a multivariate analysis of 132 cases at a single institution.

Islet transplantation is being offered increasingly for selected patients with unstable type 1 diabetes. Percutaneous transhepatic portal access avoids a need for surgery, but is associated with potential risk of bleeding. Between 1999 and 2005, we performed 132 percutaneous transhepatic islet transplants in 67 patients. We encountered bleeding in 18/132 cases (13.6%). In univariate analysis, the risk of bleeding in the absence of effective track ablation was associated with an increasing number of procedures (2nd and 3rd procedures with an odds ratio (OR) of 9.5 and 20.9, respectively), platelets count <150,000 (OR 4.4), elevated portal pressure (OR 1.1 per mm Hg rise), heparin dose > or =45 U/kg (OR 9.8) and pre-transplant aspirin (81 mg per day) (OR 2.6, p = 0.05). A multivariate analysis further confirmed the cumulative transplant procedure number (p < 0.001) and heparin dose > or =45 U/kg (p = 0.02) as independent risk factors for bleeding. Effective mechanical sealing of the intrahepatic portal catheter tract with thrombostatic coils and tissue fibrin glue completely prevented bleeding in all subsequent procedures (n = 26, p = 0.02). We conclude that bleeding after percutaneous islet implantation is an avoidable complication provided the intraparenchymal liver tract is sealed effectively.

Inhaled magnesium sulfate in the treatment of acute asthma.

BACKGROUND: Asthma exacerbations can be frequent and range in severity from relatively mild to status asthmaticus. The use of magnesium sulfate (MgSO4) is one of numerous treatment options available during acute exacerbations. While the efficacy of intravenous MgSO4 has been demonstrated, little is known about inhaled MgSO4. OBJECTIVES: To examine the efficacy of inhaled MgSO4 in the treatment asthma exacerbations. SEARCH STRATEGY: Randomised controlled trials were identified from the Cochrane Airways Group "Asthma and Wheez*" register. These trials were supplemented with trials found in the reference list of published studies, studies found using extensive electronic search techniques, as well as a review of the gray literature and conference proceedings. SELECTION CRITERIA: Randomised (or pseudo-randomised) controlled trials were eligible for inclusion. Studies were included if patients were treated with nebulised MgSO4 alone or in combination with beta2-agonist and where compared to beta2-agonist alone or inactive control. DATA COLLECTION AND ANALYSIS: Trial selection, data extraction and methodological quality were assessed by two independent reviewers. Efforts were made to collect missing data from authors. Results from fixed effects models are presented as standardized mean differences (SMD) for pulmonary functions and relative risks (RR) for hospital admission; both are displayed with their 95% confidence intervals (95% CI). MAIN RESULTS: Six trials involving 296 patients were included. Four studies compared nebulised MgSO4 with beta2-agonist to beta2-agonist and two studies compared MgSO4 to beta2-agonist alone. Three studies enrolled only adults and 2 enrolled exclusively pediatric patients; three of the studies enrolled severe asthmatics. Overall, there was a non significant improvement in pulmonary function between patients whose treatments included nebulised MgSO4 in addition to beta2-agonist (SMD: 0.23; 95% CI: -0.03 to 0.50; 4 studies). Hospitalizations were similar between the groups (RR: 0.69; 95% CI: 0.42 to 1.12; 3 studies). Subgroup analyses did not demonstrate significant differences in lung function improvement between adults and children, but in severe asthmatics the lung function difference was significant (SMD: 0.55; 95% CI: 0.12 to 0.98). Conclusions regarding treatment with nebulised MgSO4 alone are difficult to draw due to lack of studies in this area. AUTHORS' CONCLUSIONS: Nebulised inhaled magnesium sulfate in addition to beta2-agonist in the treatment of an acute asthma exacerbation, appears to have benefits with respect to improved pulmonary function in patients with severe asthma and there is a trend towards benefit in hospital admission. Heterogeneity between trials included in this review precludes a more definitive conclusion.

Inhaled magnesium sulfate in the treatment of acute asthma.

BACKGROUND: Asthma exacerbations can be frequent and range in severity from relatively mild to status asthmaticus. The use of magnesium sulfate (MgSO4) is one of numerous treatment options available during acute exacerbations. While the efficacy of intravenous MgSO4 has been demonstrated, little is known about inhaled MgSO4. OBJECTIVES: To examine the efficacy of inhaled MgSO4 in the treatment asthma exacerbations. SEARCH STRATEGY: Randomised controlled trials were identified from the Cochrane Airways Group "Asthma and Wheez*" register. These trials were supplemented with trials found in the reference list of published studies, studies found using extensive electronic search techniques, as well as a review of the gray literature and conference proceedings. SELECTION CRITERIA: Randomised (or pseudo-randomised) controlled trials were eligible for inclusion. Studies were included if patients were treated with nebulised MgSO4 alone or in combination with beta(2)-agonist and where compared to beta2-agonist alone or inactive control. DATA COLLECTION AND ANALYSIS: Trial selection, data extraction and methodological quality were assessed by two independent reviewers. Efforts were made to collect missing data from authors. Results from fixed effects models are presented as standardized mean differences (SMD) for pulmonary functions and relative risks (RR) for hospital admission; both are displayed with their 95% confidence intervals (95% CI). MAIN RESULTS: Six trials involving 296 patients were included. Four studies compared nebulised MgSO4 with beta2-agonist to beta2-agonist and two studies compared MgSO4 to beta2-agonist alone. Three studies enrolled only adults and 2 enrolled exclusively pediatric patients; three of the studies enrolled severe asthmatics. Overall, there was a significant difference in pulmonary function between patients whose treatments included nebulised MgSO4 in addition to beta2-agonist (SMD: 0.30; 95% CI: 0.03 to 0.56; 4 studies); however, hospitalizations were similar between the groups (RR: 0.69; 95% CI: 0.42 to 1.12; 3 studies). Subgroup analyses did not demonstrate significant differences in lung function improvement between adults and children, but were significantly different between severe and mild to moderate asthmatics (SMD: 0.69; 95% CI 0.13 to 1.25). Conclusions regarding treatment with nebulised MgSO4 alone are difficult to draw due to lack of studies in this area. AUTHORS' CONCLUSIONS: Nebulised inhaled magnesium sulfate in addition to beta2-agonist in the treatment of an acute asthma exacerbation, appears to have benefits with respect to improved pulmonary function and there is a trend towards benefit in hospital admission. The benefit is significantly greater in more severe asthma exacerbations. Heterogeneity between trials included in this review precludes a more definitive conclusion.

Inhaled magnesium sulfate in the treatment of acute asthma.

BACKGROUND: Asthma exacerbations can be frequent and range in severity from relatively mild to status asthmaticus. The use of magnesium sulfate (MgSO4) is one of numerous treatment options available during acute exacerbations. While the efficacy of intravenous MgSO4 has been demonstrated, little is known about inhaled MgSO4. OBJECTIVES: To examine the efficacy of inhaled MgSO4 in the treatment asthma exacerbations. SEARCH STRATEGY: Randomised controlled trials were identified from the Cochrane Airways Group "Asthma and Wheez*" register. These trials were supplemented with trials found in the reference list of published studies, studies found using extensive electronic search techniques, as well as a review of the gray literature and conference proceedings. SELECTION CRITERIA: Randomised (or pseudo-randomised) controlled trials were eligible for inclusion. Studies were included if patients were treated with nebulised MgSO4 alone or in combination with beta2-agonist and where compared to beta2-agonist alone or inactive control. DATA COLLECTION AND ANALYSIS: Trial selection, data extraction and methodological quality were assessed by two independent reviewers. Efforts were made to collect missing data from authors. Results from fixed effects models are presented as standardized mean differences (SMD) for pulmonary functions and relative risks (RR) for hospital admission; both are displayed with their 95% confidence intervals (95% CI). MAIN RESULTS: Six trials involving 296 patients were included. Four studies compared nebulised MgSO4 with beta2-agonist to beta2-agonist and two studies compared MgSO4 to beta2-agonist alone. Three studies enrolled only adults and 2 enrolled exclusively pediatric patients; three of the studies enrolled severe asthmatics. Overall, there was a significant difference in pulmonary function between patients whose treatments included nebulised MgSO4 in addition to beta2-agonist (SMD: 0.37; 95% CI: 0.1 to 0.63; 4 studies); however, hospitalizations were similar between the groups (RR: 0.64; 95% CI: 0.40 to 1.04; 3 studies). Subgroup analyses did not demonstrate significant differences in lung function improvement between adults and children, or between severe and mild to moderate asthmatics. Conclusions regarding treatment with nebulised MgSO4 alone are difficult to draw due to lack of studies in this area. AUTHORS' CONCLUSIONS: Nebulised inhaled magnesium sulfate in addition to beta2-agonist in the treatment of an acute asthma exacerbation, appears to have benefits with respect to improved pulmonary function and there is a trend towards benefit in hospital admission. Heterogeneity between trials included in this review precludes a more definitive conclusion.

Influenza. Cost of illness and considerations in the economic evaluation of new and emerging therapies.

Influenza infection has been a burden to humans for thousands of years. Despite the fact that epidemics could be predicted with regularity, the lack of available prevention or treatment measures left humankind vulnerable to the harmful effects of this ubiquitous virus. While the pandemics of 1918 and 1957 are recent examples of the devastation that influenza may inflict, even in a typical year influenza infection and related complications cause significant morbidity and mortality. The development of an influenza vaccine during the 1940s marked a major turning point in the management of this disease. Vaccination of the elderly and other high risk patients has been shown to reduce morbidity and mortality and to be a worthwhile investment from an economic perspective. Despite these benefits, vaccine use in this group remains suboptimal. The role of annual vaccination for individuals at lower risk for influenza-related complications remains controversial. While prevention by vaccination is relatively straightforward, the treatment of symptomatic influenza-like illness with medication is more complicated. Differentiating symptoms caused by the influenza viruses from those caused by other common viruses is difficult. Currently available tests to document influenza as the cause of illness are either too expensive, too inaccurate or too time consuming to impact treatment. Symptom-based diagnosis remains the most commonly used strategy in clinical practice. The approval of the neuraminidase inhibitors (NIs)--zanamivir and oseltamivir--remind healthcare providers of the difficulties in diagnosing and treating influenza. NIs have been shown to reduce the duration of symptoms of individuals infected with influenza when prescribed within the first 2 days of symptoms. Whether these innovative agents are cost effective, however, requires a more detailed understanding of the benefits that these agents may offer above and beyond existing therapies. In this review, we examine the burden of influenza infection, diagnostic challenges and the clinical and economic impact of available interventions. Clinical controversies and potential areas for further investigation are also explored.

Diagnostic testing for influenza: review of current status and implications of newer treatment options.

AUDIENCE: This article is intended for all clinicians caring for patients at risk for or infected with influenza. GOAL: To review the accuracy and utility of diagnostic tests for influenza and to compare them with clinical diagnosis. OBJECTIVES: 1. Discuss the epidemiology and scope of influenza infection. 2. Discuss available diagnostic tests for influenza. 3. Discuss the implications of newer options for prevention and therapy.

A biomechanical analysis of methods used for transferring totally dependent patients.

Lifting and transferring patients have been identified as frequent precipitating factors or causes of low back problems among nurses. This study systematically evaluated six different transfer methods (three manual and three mechanical) completed by two female nurses working as a team to transfer two totally dependent patients (heavy, 95 kg and light, 56 kg). The patient transfers were completed on a rehabilitation unit of a large university hospital. Each transfer was videotaped and the short (150 cm) and tall (178 cm) nurse each performed the lead and assist roles using all six methods for both patients for a total of 24 transfers. A biomechanical software program referred to as the "3-Dimensional Static Strength Prediction Program (3DSSPPTM)" was used to model each patient transfer, and to compute the peak compressive force on the L5/S1 disc, as well as estimate the percent of the population with sufficient strength capability to transfer patients. The results of biomechanical analysis revealed that the low back compression forces exceeded the back compression design limit recommended by the National Institute for Occupational Safety and Health (NIOSH) (3400N). For the manual transfer methods peak compressive forces greater than 10,000 N were predicted, which far exceeded the NIOSH upper limit of 6400 N. When mechanical lift devices were used, the back compression forces were below the back compression design limits. This study reinforces the need to utilize a mechanical lift device when transferring totally dependent patients with only two nurses.

Medical screening of office workers for upper extremity cumulative trauma disorders.

An apparent "outbreak" of cumulative trauma disorders (CTDs) was noted in a subset of white-collar workers employed in medical illustration and medical graphic arts. Among graphic artists (n = 7), there were three cases of carpal tunnel syndrome (CTS), based on patient reports of personal physician diagnoses; no such reports occurred among other workers in the department (n = 39, p = .0023, Fisher's exact test). Jobs were studied to identify possible risk factors for CTDs, and workers underwent a standardized medical screening protocol. Specific work elements were found to be performed more frequently by graphic artists and appeared to be related to increased reporting of distal upper extremity symptoms and electrodiagnostic changes at the wrist. Nevertheless, using a strict case definition of CTS that required electrophysiologic evidence of median mononeuropathy at the wrist and appropriate symptoms or signs, only two persons--one graphic artist and one comparison subject--had evidence of mild CTS. The approach employed in this study of an outbreak of CTDs is an example of a multidisciplinary investigation of CTDs in an office setting.

Faculty expectations and primary care residents' perceptions concerning residents' growth in competence at one medical school.

The authors studied at one school both the developing confidence of primary care residents and the expectations of both internal medicine and specialty faculty members regarding the abilities of the residents. From 1980 to 1988, residents in the study institution's program in internal medicine primary care completed self-assessments concerning their diagnostic and management skills in primary care and several specialties at the start of their training and at the ends of their first, second, and third years. In 1988, the authors elicited the expectations of the primary care and specialty faculties regarding the levels of competence that residents should achieve in the specialties by the end of their third year. When the faculty assessments were compared, the specialists were found to ascribe greater levels of autonomy to residents. The authors conclude that involving residents and faculty members from various disciplines in developing expectations and evaluation criteria can enhance faculty members' perceptions of residents' clinical competence and residents' achievement of it.