A cost-effectiveness analysis of propofol versus midazolam for procedural sedation in the emergency department

OBJECTIVES

To determine the incremental cost-effectiveness of using propofol versus midazolam for procedural sedation (PS) in adults in the emergency department (ED).

METHODS

The authors conducted a cost-effectiveness analysis from the perspective of the health care provider. The primary outcome was the incremental cost (or savings) to achieve one additional successful sedation with propofol compared to midazolam. A decision model was developed in which the clinical effectiveness and cost of a PS strategy using either agent was estimated. The authors derived estimates of clinical effectiveness and risk of adverse events (AEs) from a systematic review. The cost of each clinical outcome was determined by incorporating the baseline cost of the ED visit, the cost of the drug, the cost of labor of physicians and nurses, the cost and probability of an AE, and the cost and probability of a PS failure. A standard meta-analytic technique was used to calculate the weighted mean difference in recovery times and obtain mean drug doses from patient-level data from a randomized controlled trial. Probabilistic sensitivity analyses were conducted to examine the uncertainty around the estimated incremental cost-effectiveness ratio using Monte Carlo simulation.

RESULTS

Choosing a sedation strategy with propofol resulted in average savings of $17.33 (95% confidence interval [CI] = $24.13 to $10.44) per sedation performed. This resulted in an incremental cost-effectiveness ratio of -$597.03 (95% credibility interval -$6,434.03 to $6,113.57) indicating savings of $597.03 per additional successful sedation performed with propofol. This result was driven by shorter recovery times and was robust to all sensitivity analyses performed.

CONCLUSIONS

These results indicate that using propofol for PS in the ED is a cost-saving strategy.

Anxiety disorders and suicidal behaviour: an update

PURPOSE OF REVIEW

The primary aim of this review is to present the main findings from the literature published between January 2006 and May 2007 on anxiety and suicidal behaviour. The secondary aim is to present critical comments on methodological issues, highlighting areas for future research.

RECENT FINDINGS

Traditionally, anxiety disorders have not been viewed as independent risk factors for suicidal behaviour, and therefore assessment of anxiety disorders has not been particularly emphasized in clinical enquiries and suicide screening tools. This review identifies evidence suggesting that specific anxiety disorders (e.g. generalized anxiety disorder, panic disorder and obsessive-compulsive disorder) may be independently associated with suicidality, to which they particularly contribute when they are co-morbid with bipolar disorder, depression, schizophrenia, or post-traumatic stress disorder, in both child/adolescent and adult populations.

SUMMARY

Despite methodological issues preventing firm conclusions from being drawn in most cases, these findings should prompt clinicians to evaluate more specifically the impact of anxiety disorders on suicidal behaviour, particularly when they are co-morbid. Further research into treatment of anxiety disorders in relation to preventing suicide is required.

Safety and clinical effectiveness of midazolam versus propofol for procedural sedation in the emergency department: a systematic review

OBJECTIVES

To synthesize the evidence comparing the adverse event (AE) profile and clinical effectiveness of midazolam and propofol for procedural sedation (PS) in adults in the emergency care setting.

METHODS

The authors conducted a systematic review of randomized controlled trials (RCTs) and observational studies reporting the use of either midazolam and/or propofol for adult PS in the emergency department (ED). A systematic search strategy was developed and applied to six bibliographic reference databases. Three emergency medicine journals, the Canadian Adverse Drug Reaction Newsletter, and conference proceedings were hand-searched. Retrieved articles were reviewed and data were abstracted using standardized data collection. Trial quality was assessed using the Jadad score. The outcomes assessed were the proportion of patients with AEs and the pooled mean difference in the proportion of patients with successful PS.

RESULTS

Of 229 articles identified, 28 met the inclusion criteria for the analysis of AEs. Only one major AE to PS was found, resulting in no statistically significant difference in the proportion of major AEs between agents. Four studies were RCTs that met the inclusion criteria for the analysis of clinical effectiveness. Two trials met criteria for good quality. The RCTs enrolled between 32 and 86 patients, and the most common indications for PS were orthopedic reductions and cardioversions. There was a nonsignificant difference in the proportion of patients with successful PS in favor of propofol (effect difference 2.9%, 95% confidence interval (CI) = -6.5 to 15.2).

CONCLUSIONS

The authors found no significant difference in the safety profile and the proportion of successful PS between midazolam and propofol for adults in the ED.

Recto-vaginal sex leading to colostomy and recto-vaginal repair

Recto-vaginal tears have been described in association with foreign bodies, rape and accidental trauma victims. We describe a case of upper recto-vaginal tear without involvement of perineum or sphincter following consensual heterosexual coitus, which has not been previously reported.

Influence of acute physical exercise on emerging muscular biomarkers

: Although there is comprehensive information on traditional biomarkers of muscle and cardiac damage following exercise, less is known on the kinetics of innovative markers, including ischemia modified albumin (IMA), glycogen phosphorylase isoenzyme BB (GPBB), carbonic anhydrase III (CAIII) and heart-type fatty acid-binding protein (H-FABP) in athletes performing a sub-maximal exercise.

: A total of 10 healthy trained Caucasian males performed a 21-km run. Blood samples were collected before the run, immediately after (post), 3, 6 and 24 h thereafter. Cardiac troponin I (cTnI), myoglobin, creatine kinase isoenzyme MB (CK-MB), GPBB, CAIII and H-FABP were assayed using a new diagnostic system based on protein biochip array technology. IMA was measured by a commercial colorimetric assay on a Roche Modular system P.

: Significant variations by one-way analysis of variance were observed for CK-MB (p=0.013), myoglobin (p<0.001), GPBB (p=0.029), H-FABP (p<0.001), CAIII (p=0.006), but not for cTnI (p=1.00) and IMA (p=0.881). In particular, values of all the biomarkers tested, but cTnI and IMA, increased significantly immediately after the run. GPBB and H-FABP values returned to baseline 6 and 3 h thereafter, those of CAIII, CK-MB and myoglobin remained significantly elevated from the pre-run value up to 24 h after the run. The major variation over pre-run values was recorded for myoglobin (nearly 4-fold increment), whereas CAIII, CK-MB, GPBB and H-FABP increased by 2.9-, 1.8-, 1.4- and 1.2-fold, respectively.

: We conclude that a sub-maximal aerobic exercise influences the concentration of several markers of muscle damage. Except for IMA, not one of the emerging biomarkers tested can be safely used to rule out myocardial damage as well as cardiospecific troponins in patients who had undergone recent physical activity.

Clin Chem Lab Med 2008;46:1313–8.

Sudden cardiac death in young athletes

Although regular aerobic physical activity increases exercise capacity and plays a role in both primary and secondary prevention of a variety of chronic disorders, competitive physical exercise is associated with a significant increase of risk of sudden death in athletes, especially adolescents and young adults. Several pathogenetic mechanisms have been speculated, including silent cardiovascular conditions, mostly cardiomyopathy, premature coronary artery disease and congenital coronary anomalies. Uneventful events, especially commotio cordis, and abuse of unfair and dangerous performance-enhancing drugs, are also claimed as potential causes. Although identification of athletes at major risk and prevention of adverse events seems the more pervasive strategy, guidelines for screening athletes differ widely on international basis and even among the different Sport federations. The aim of this review was to compile the current knowledge on the prevalence and the most common causes of sudden death in sportsmen, providing an overview of the guidelines for pre-participation screening.

Did a health dialogue matter? Self-reported cardiovascular disease and diabetes 11 years after health screening

OBJECTIVE

To study the potential impact of health screening, with or without a motivational health dialogue, on the risk and morbidity of cardiovascular diseases (CVD) and diabetes (DM).

DESIGN

Two cross-sectional studies with an interval of 11 years.

SETTING

The community of Härnösand, Sweden.

SUBJECTS

In the first study, 402 men born in 1934, 1944, or 1954 underwent health screening for CVD prevention in 1989. In the second study, 415 men (of the same ages) completed a questionnaire in 2000 (11 years later).

MAIN OUTCOME MEASURES

Odds ratio (OR) for self-reported CVD and DM.

RESULTS

The odds ratio of self-reported CVD and DM was more than doubled among participants in the health screening without a health dialogue (OR 2.5; 95% CI 0.8-7.4) and threefold for those not participating (OR 3.0; 95% CI 1.0-8.8) compared with those who reported participation in health screening that included a structured health dialogue.

CONCLUSIONS

Health screening for the prevention of CVD and DM benefits from inclusion of a structured, motivational health dialogue.

Medical futility in asystolic out-of-hospital cardiac arrest

OBJECTIVES

To study the factors associated with short- and long-term survival after asystolic out-of-hospital cardiac arrest, with a reference to medical futility.

METHODS

This is a retrospective observational study conducted in Helsinki, Finland during 1 January 1997 to 31 December 2005. All out-of-hospital cardiac arrests were prospectively registered in the cardiac arrest database. Of 3291 arrests, 1455 had asystole as the first registered rhythm. These patients represent the study population.

RESULTS

A short time interval to the initiation of advanced life support (ALS) was associated with a long-term benefit, but a short first responding unit (FRU) response time had only a short-term benefit. Conversion of asystole into a shockable rhythm provided only a short-term benefit. The prognosis was poor if the FRU response time was over 10 min or the ALS response time was over 11 min in bystander-witnessed arrests, and if the duration of resuscitation was over 8 min in emergency medical services (EMS)-witnessed arrests. Bystander-CPR was associated with increased 30-day mortality. The 30-day survival rate after an unwitnessed arrest (n=548) was 0.5%. All survivors in this group were either hypothermic or were victims of near-drowning.

CONCLUSIONS

Resuscitation should be withheld in cases of unwitnessed asystole, excluding cases of hypothermia and near-drowning. The prognosis is poor if the FRU response time is over 10 min or the ALS response time is over 10-15 min in bystander-witnessed arrests. The decision of whether or not to attempt resuscitation should not be influenced by the presence of bystander-CPR. Early initiation of ALS should be prioritised in the treatment of out-of-hospital asystole.

Changing the process of care and practice in acute asthma in the emergency department: experience with an asthma care map in a regional hospital

INTRODUCTION

Despite the frequency of acute asthma in the emergency department (ED) and the availability of guidelines, significant practice variation exists. Asthma care maps (ACMs) may standardize treatment. This study examined the use of an ACM to determine its effects on patient management in a regional hospital.

METHODS

Patients aged 2 to 65 years who presented to the ED with a primary diagnosis of acute asthma were enrolled in a prospective study that took place 5 months before (pre) and 5 months after (post) ACM implementation. Research assistants using a standardized questionnaire abstracted data through direct patient interviews and then followed up at 2 weeks with a standardized telephone interview.

RESULTS

Overall, 71 pre patients and 70 post patients were enrolled. Characteristics in both groups were similar. The care map was used in 100% of the cases during the post period. The mean length of stay in the ED for the pre, compared with the post period, was similar (2 h 14 min v. 2 h 25 min; p = 0.60), as were admission rates (11% v. 9%; p = 0.59). Systemic corticosteroid use was similar (62% v. 57%; p = 0.56); however, the total number of beta-agonists (2 v. 4 treatments; p = 0.002) and anticholinergics (1 v. 2 treatments; p < 0.001) administered in the ED was higher during the post period. Prescriptions for oral (73% v. 60%; p = 0.15) and inhaled (78% v. 78%; p = 0.98) corticosteroids at discharge remained the same. Relapse rates at follow-up were unchanged (29% v. 34%; p = 0.52).

CONCLUSION

This study provides evidence that implementation of an ACM increased acute bronchodilator use; however, prescribing preventive medications did not increase. Further research is required to evaluate other strategies to improve asthma care by emergency physicians.

The adaptation of an adult group screening test for dyslexia into Finland-Swedish: normative data for university students and the effects of language background on test performance

We present a Finland-Swedish adaptation of the Sweden-Swedish group screening test for dyslexia for adults and young adults DUVAN (Lundberg & Wolff, 2003) together with normative data from 143 Finland-Swedish university students. The test is based on the widely held phonological deficit hypothesis of dyslexia and consists of a self-report and five subtests tapping phonological working memory, phonological representation, phonological awareness, and orthographic skill. We describe the test adaptation procedure and show that the internal reliability of the new test version is comparable to the original one. Our results indicate that the language background (Swedish, Finnish, early simultaneous Swedish-Finnish bilingualism) should be taken into account when interpreting the results on the Finland-Swedish DUVAN test. We show that the FS-DUVAN differentiates a group of students with dyslexia diagnosis from normals, and that a low performance on the FS-DUVAN correlates with a positive self-report on familial dyslexia and with a history of special education in school. Finally, we analyze the sensitivity and specificity of the FS-DUVAN for dyslexia among university students.

Electronic interface for emergency department management of asthma: a randomized control trial of clinician performance

OBJECTIVES

To evaluate the effectiveness of an integrated and dynamic electronic decision support system for management of acute asthma in the ED.

METHODS

A randomized trial was conducted comparing clinician performance using this electronic interface compared with paper documentation in a simulation scenario. The outcomes were documentation of asthma-related information and consultation times.

RESULTS

Use of this electronic interface was associated with significantly higher rates of documentation in 7 out of 10 variables, including provision of written short-term asthma management plans. After adjustment for participant seniority, there was no significant difference in consultation times.

CONCLUSION

In a simulation trial, use of this electronic interface was associated with improvements in clinical and discharge documentation. Further studies are required to test this prototype in clinical practice.

Emergency department use of intravenous procainamide for patients with acute atrial fibrillation or flutter

OBJECTIVES

Acute atrial fibrillation and flutter are very common arrhythmias seen in emergency department (ED) patients, but there is no consensus for their optimal management. The objective of this study was to examine the efficacy and safety of intravenous (IV) procainamide for acute atrial fibrillation or flutter.

METHODS

This health records review included a consecutive cohort of ED patients with acute-onset atrial fibrillation or atrial flutter who received IV procainamide at one university hospital ED during a five-year period. The standard clinical protocol involved IV infusion of 1 g of procainamide over 60 minutes, followed by electrical cardioversion if necessary. A trained observer extracted data from the original clinical records. Outcome measurements included conversion to sinus rhythm, adverse events, and relapse up to seven days.

RESULTS

The 341 study patients had a mean age of 63.9 years (SD +/- 15.5 years), and 56.6% were male. The conversion rates were 52.2% (95% confidence interval = 47% to 58%) for 316 atrial fibrillation cases and 28.0% (95% confidence interval = 13% to 46%) for 25 atrial flutter cases. Mean dose given was 860.7 mg (SD +/- 231.2 mg), and median time to conversion was 55 minutes. Adverse events occurred in 34 cases (10.0%): hypotension, 8.5%; bradycardia, 0.6%; atrioventricular block, 0.6%; and ventricular tachycardia, 0.3%. There were no cases of torsades de pointes, cerebrovascular accident, or death. Most patients (94.4%) were discharged home, but 2.9% of patients returned with a recurrence of atrial fibrillation within seven days.

CONCLUSIONS

This study of acute atrial fibrillation or flutter patients treated in the ED with IV procainamide suggests that this treatment is safe and effective in this setting. Procainamide should be prospectively compared with other ED strategies.

The challenge of ST-segment elevation myocardial infarction

BACKGROUND/INTRODUCTION

Acute coronary syndromes (ACS) represent a spectrum of ischaemic myocardial events that share a similar pathophysiology. ST-segment elevation myocardial infarction (STEMI), the most severe form of ACS short of sudden cardiac death, is a significant public health problem with an estimated 500,000 STEMI events every year in the United States.

TREATMENT/THERAPY

The mortality and morbidity associated with STEMI is significant. Early reperfusion therapy is the most important aspect of the treatment of STEMI. There are two main methods of reperfusion therapy: percutaneous coronary intervention (PCI) and fibrinolytic therapy, with PCI being the preferred method. In addition to standard reperfusion therapy, antithrombotics (unfractionated heparin and low molecular weight heparins) and antiplatelet agents (aspirin, clopidogrel and glycoprotein IIb/IIIa inhibitors) are critical adjuncts, effective in the treatment of acute STEMI.

CONCLUSIONS

The survival of patients with STEMI depends on rapid diagnosis and optimal early treatment. Guidelines for the management of patients with STEMI recommend PCI within 90 min of presentation and that fibrinolytics are administered within 30 min. However, only a fraction of patients undergo reperfusion within the recommended time. Improvements in protocols for identifying STEMI cases are therefore required to allow reperfusion therapy to be initiated sooner. Secondary prevention is another important aspect of STEMI management, and patients should be encouraged to adopt strategies that reduce the risk of subsequent ischaemic events.

An attempt to measure the spread of emergency medicine internationally

OBJECTIVE

To determine the feasibility of using the internet to track the spread of emergency medicine internationally.

OVERVIEW

This was an attempt to perform a descriptive cross-sectional study employing a web-based survey.

SUBJECTS

Potential respondents were identified from multiple sources.

OBSERVATIONS

The primary outcome was the response to 16 questions about EM care and the setting in which it was delivered for acute cardiac, paediatric, obstetrical illnesses and trauma. The questions were divided into six general areas and elicited for urban, semi-urban and rural settings. A series of four e-mails soliciting completion of the survey were sent to potential respondents.

ANALYSIS

Simple descriptive statistics.

RESULTS

We identified 358 potential respondents with valid e-mail addresses over a period of three years. Overall, 145 (41%) responded and 117 (33% 95% CI 28-38%) of them were complete and interpretable. There was one response from 54 and two responses from 29 countries, representing an overall response rate by country surveyed of 65% (95% CI 57-73%), but of all existing countries of only 43% (95% CI 36-50%). Based on sparse data, it appears that in urban areas, 47% (obstetrics) to 65% (paediatric) of acutely sick or injured patients are taken to an ED-equivalent. For rural areas, this range was 19% (obstetrical) to 40% (trauma). CT scans are available in 78% of urban ED-equivalents but 12% of rural ones. Haematocrits are available in 72% of rural settings. In 60% of responding nations, some type of EM training was available, and in 42% physicians went abroad to study EM.

CONCLUSIONS

A survey of international EM is challenging to achieve because of difficulty in both identifying and in contacting potential respondents. Based on sparse data, population density (urban, rural) appears to be related to both the location to which acutely ill patients are taken for their care and to the level of technology available. The specialty of EM is now recognised internationally and education in EM is common.

Influences on parents’ fever management: beliefs, experiences and information sources

AIM

To identify parents' knowledge, beliefs, management and sources of information about fever management.

BACKGROUND

Despite numerous studies exploring parents' management of childhood fever; negative beliefs about fever and overuse of antipyretics and health services for mild fevers and self-limiting viral illnesses continue to be reported.

DESIGN

Qualitative design using semi-structured interviews and discussions.

METHOD

Fifteen metropolitan parents whose children were aged six months to five years, volunteered to participate in individual interviews or group discussions. Recruitment was through Playgroup Queensland's online newsletter and letters from two childcare centres to all parents. Verbatim and audio data were collected by an experienced moderator using a semi-structured interview guide.

DATA ANALYSIS

Two transcripts were independently analysed by two researchers; categories, sub-headings and codes were independently developed, crosschecked and found comparable. Remaining transcripts were analysed using developed categories and codes.

RESULTS

Fever, determined through behavioural changes, was perceived as 'good', a warning that something was wrong. High fever, reported as 38.0-39.1 degrees C, was considered harmful; it must be prevented or reduced irrespective of concerns about antipyretics. Positive febrile experiences reduced concern about fever. Negative experiences such as febrile convulsions, media reports of harm, not receiving a definitive diagnosis, inaccessibility to regular doctors and receiving conflicting information about fever management increased the concerns. Parents seek information about fever from multiple sources such as doctors, books and other parents.

CONCLUSIONS

Parents' experiences with and information sources about fever and fever management influenced their knowledge, beliefs and practices. Positive experiences reduce concerns, health service usage and sometimes antipyretic usage. Negative experiences increase concerns, monitoring and antipyretic and health service usage.

RELEVANCE TO CLINICAL PRACTICE

Health professionals need to update their fever management knowledge ensuring that it is based on the latest scientific knowledge. They must provide parents of young children with consistent, reliable information preferably before their first child's first febrile episode.

Bench to bedside strategies for optimizing neuroprotection following perinatal hypoxia-ischaemia in high and low resource settings

BACKGROUND

Therapeutic hypothermia gathers impetus in the developed world as a safe and effective therapy for term asphyxial encephalopathy. Although many questions still remain about the optimal application of hypothermic neuroprotection it is difficult to ignore the developing world where the prevalence of asphyxial encephalopathy is much higher. Experimental studies to optimize high tech cooling need to run in parallel with trials to determine the possible benefits of therapeutic hypothermia in low resource settings.

METHODS

We used a validated newborn piglet model of transient HI to determine (i) whether optimal neuroprotection occurs at different temperatures in the cortical and deep grey matter; (ii) the effect of body size on regional brain temperature under normothermia and hypothermia; (iii) the effect of insult severity on the therapeutic window duration; (iv) whether cooling using a water bottle is feasible. In this model hypoxia-ischaemia is induced by reversible occlusion of the common carotid arteries by remotely controlled vascular occluders and simultaneous reduction in the inspired oxygen fraction to 0.12. Intensive care can be administered to the piglet maintaining metabolic and physiological homeostasis throughout the experiment, and cerebral energy metabolism is monitored continuously providing quantitative measures of the HI insult, latent phase and secondary energy failure using phosphorus-31 ((31)P) magnetic resonance spectroscopy (MRS).

RESULTS

(i) The optimal temperature for cooling was lower in the cortex than deep grey matter. (ii) Cerebral temperatures were body-weight dependent: a smaller body weight led to a lower brain temperature especially with selective head cooling. (iii) Latent-phase duration is inversely related to insult severity. (iv) Low tech, simple cooling methods using a water bottle can induce and maintain moderate hypothermia.

CONCLUSIONS

Small shifts in brain temperature critically influence the survival of neuronal cells and body size critically influences brain-temperature gradients - smaller subjects have a larger surface area to brain volume and hence more heat is lost. The clinical implication is that smaller infants may require higher cap or body temperatures to avoid detrimental effects of over-zealous cooling. Latent-phase brevity may explain less effective neuroprotection following severe HI in some clinical studies. "Tailored" treatments which take into account individual and regional characteristics may increase the effectiveness of therapeutic hypothermia in the developed world. Low tech cooling methods using water bottles may be feasible although adequate staffing and monitoring would be required.

Effectiveness of emergency department asthma management strategies on return visits in children: a population-based study

BACKGROUND

Emergency departments play an important role in the care of children with asthma. Emergency department return-visit rates provide a measure of the quality of acute asthma care.

OBJECTIVE

Our goal was to describe the characteristics of children treated in emergency departments for asthma, the resources and asthma management strategies used by emergency departments, and their effect on return visits within 72 hours.

DESIGN, SETTING, AND PATIENTS

We used a population-based cohort study that incorporated both comprehensive administrative heath and survey data from all 152 emergency departments in Ontario, Canada. We studied all 2- to 17-year-old children who had a visit to an emergency department for asthma from April 2003 to March 2005.

RESULTS

A total of 32,996 children (>9% of children with asthma in Ontario) had at least 1 visit to an emergency department for the care of asthma, and most of these visits (68.5%) were triaged as high acuity. The vast majority (148 of 152 [97%]) of emergency departments reported using at least 1 asthma management strategy, and 74% used 3 or more. The overall return-visit rate was 5.6%. Logistic regression models that accounted for the clustering of patients in emergency departments and controlled for patient and emergency department characteristics indicated that preprinted order sheets and access to a pediatrician for consultation were strategies significantly associated with a reduction in return visits. The 11 (17%) emergency departments that used both of these strategies had return visit rates of 4.4% compared with 6.9% in the 95 (63%) that used neither strategy.

CONCLUSIONS

Emergency departments use a range of strategies to manage asthma in children. Preprinted order sheets and access to pediatricians are associated with important reductions in return-visit rates, and more emergency departments should consider using these strategies.

Predictive validity comparison of two five-level triage acuity scales

INTRODUCTION

Each of the two most commonly used five-level triage tools in North America, the Emergency Severity Index and the Canadian Triage and Acuity Scale have been used as a measure of emergency department resource utilization in addition to acuity. In both cases, it is believed that patients triaged as having a higher level of acuity require a greater number of emergency department resources. We compared the ability of each tool to predict the emergency department resources for each emergency department visit and associated hospital admission and in-hospital mortality rates.

METHODS

This is an observational, cohort study of a population-based random sample of patients triaged at two emergency departments over a 4-month period. Correlational analyses were performed to examine the relationship between the triage assessment and: (i) resource utilization, (ii) hospital admission, and (iii) in-hospital mortality.

RESULTS

From 486 patients, analyses revealed the greatest correlation was between Emergency Severity Index and diagnostic resources [-0.54 (95% confidence intervals: -0.58, -0.50)] and the poorest correlation was between Canadian Triage and Acuity Scale and mortality [-0.16 (95% confidence intervals: -0.20, -0.12)]. No statistically significant differences (P<0.005) were observed between each tool 's ability to predict any of the outcomes measured.

CONCLUSION

No statistically significant difference was observed in the ability of Emergency Severity Index v. 3 and Canadian Triage and Acuity Scale to predict emergency department resource utilization or immediate patient outcomes. This ability is, at best, only moderate indicating that other, more accurate tools than measures of triage acuity are required for this purpose.

Management of cellulitis in a pediatric emergency department

OBJECTIVES

(1) To determine antibiotic choices, route of administration, and outcomes of children treated as outpatients with noncomplicated, nonfacial cellulitis at a tertiary care center. (2) To determine the number of visits and time spent in the emergency department (ED) for treatment.

DESIGN

A descriptive case-control study.

SETTING

A tertiary care pediatric ED at an academic medical center.

METHODS

Medical records of all otherwise healthy children (aged 1-16 yrs) presenting with noncomplicated, nonfacial cellulitis over a 3-year period (January 1, 2001-December 31, 2003) were reviewed. Data extracted included the following: demographics; clinical presentation; laboratory and microbiology results; management, including choice, dose, and route of antibiotic(s); treatment failures; and time spent in the ED.

INTERVENTIONS

None.

MAIN RESULTS

Two hundred sixty-nine patients met the inclusion criteria, and their charts were selected for review. The oral antibiotic most often prescribed was cephalexin (N = 105). Treatment failure occurred in 10 (8.9%) of the cases. The intravenous antibiotic most often prescribed was cefazolin (N = 124; 39 received cefazolin alone, and 85 received cefazolin and probenecid). The cefazolin-only group had 12 (31%) treatment failures, whereas the cefazolin and probenecid group had 7 (8.1%) treatment failures. More time in the ED (521 +/- 287 minutes) and more visits (3.4 +/- 2.8) were seen in the intravenous group as compared with the oral group (time in ED, 164 +/- 139 minutes; visits, 1.4 +/- 1).

CONCLUSIONS

Noncomplicated, nonfacial cellulitis is most commonly treated using first-generation cephalosporins. Treatment with oral antibiotics was effective and required fewer visits and less time in the ED compared with intravenous treatment. Twice-daily cefazolin and probenecid was associated with less treatment failures and admissions than cefazolin alone and may represent a reasonable alternative for children with nonfacial cellulitis requiring intravenous antibiotics.

Comparison of termination-of-resuscitation guidelines for out-of-hospital cardiac arrest in Singapore EMS

CONTEXT

Termination of resuscitation (TOR) in the field for out-of-hospital cardiac arrest (OHCA) can reduce unnecessary transport to hospital and increase availability of resources for other patients.

OBJECTIVES

To compare the performance of three TOR guidelines for Basic Life Support-Defibrillator (BLS-D) providers when applied to cardiac arrest patients in the Cardiac Arrest and Resuscitation Epidemiology (CARE) study.

DESIGN

This prospective cohort study involved all OHCA patients attended by BLS-D providers in a large urban center. The data analyses were conducted secondarily on these prospectively collected data. Three TOR guidelines proposed by Marsden et al. [BMJ 1995;311:49-51], Petrie [CJEM 2001;3:186-92] and Verbeek et al. [Acad Emerg Med 2002;9:671-8] were applied to show the relationship between the guidelines and actual survival.

RESULTS

From 1 October 2001 to 14 October 2004, 2269 patients were enrolled into the study. Thirty-two (1.4%) survived to hospital discharge. For the 3 TOR guidelines, sensitivity was 93.8% (95%CI=79.9-98.3) (Petrie), 81.3% (95%CI=64.7-91.1) (Verbeek) and 90.6% (95%CI=75.8-96.8) (Marsden). Negative predictive value was 99.7% (95%CI=99.0-100.0) (Petrie), 99.6% (95%CI=99.2-99.8) (Verbeek) and 99.8% (95%CI=99.4-99.9) (Marsden). Application of these guidelines would have resulted in transport of 68.4% (Petrie), 31.3% (Verbeek) and 36.1% (Marsden) of cases. The Petrie guidelines would have recommended TOR in two patients who eventually survived. Similarly TOR was recommended in six patients for Verbeek and three patients for Marsden who eventually survived.

CONCLUSION

We found all three TOR guidelines to have high sensitivity and negative predictive value. However the specificity and transport rates varied greatly. Application of any TOR guidelines may be affected by local EMS and population factors which should be considered in any policy decision.

Nebulized racemic epinephrine used in the treatment of severe asthmatic exacerbation: a case report and literature review

Acute asthma is a common emergency department (ED) problem that is typically treated with bronchodilators and anti-inflammatories. Nebulized selective, short-acting beta-agonists, such as salbutamol, are the bronchodilators of choice in most Canadian EDs. Other important treatments in moderate-to-severe cases include systemic corticosteroids and in severe cases may include the addition of ipratropium bromide and magnesium sulfate. Despite aggressive management, some patients do not respond adequately to nebulized salbutamol. Treatment options in these patients are limited to interventions such as parenteral epinephrine, and non-invasive and mechanical ventilation (or both). Both parenteral epinephrine and mechanical ventilation have associated risks, so alternative treatments with a lower risk profile would be useful for the treatment of life-threatening asthma. The following case report describes a patient in whom nebulized racemic epinephrine was used successfully to treat severe acute asthma following failure of standard first-line therapies.

Integrating nurse practitioners into Canadian emergency departments: a qualitative study of barriers and recommendations

OBJECTIVE

The objective of this study was to identify the facilitators and barriers associated with integrating nurse practitioners (NPs) into Canadian emergency departments (EDs) from the perspectives of NPs and ED staff.

METHODS

We conducted 24 semi-structured interviews with key multidisciplinary stakeholders in 6 Ontario EDs to gain a broad range of perspectives on implementation issues. Data were analyzed using a grounded-theory approach.

RESULTS

Qualitative analysis of the interview data revealed 3 major issues associated with NP implementation: organizational context, role clarity and NP recruitment. Organizational context refers to the environment an NP enters and involves issues related to the ED culture, physician reimbursement system and patient volume. Role clarity refers to understanding the NP's function in the ED. Recruitment issues are associated with attracting and retaining NPs to work in EDs. Examples of each issue using respondent's own words are provided.

CONCLUSIONS

Our study identified 3 issues that illustrate the complex issues involved when implementing NPs in EDs. The findings may inform policy makers and health care professionals in the future development of the role of NPs in Canadian EDs.

The safety of nurse clearance of the cervical spine using the National Emergency X-radiography Utilization Study low-risk criteria

OBJECTIVES

To determine the level of agreement between trained ED nursing staff and senior ED medical staff in the application and interpretation of the National Emergency X-radiography Utilization Study (NEXUS) low-risk criteria (NLC).

METHODS

A NEXUS training and accreditation package was developed. It was successfully undertaken by 22 senior ED nursing staff and 26 senior ED medical staff. A study nurse and doctor independently applied the NLC to a convenience sample of patients who had been placed in a hard cervical collar prior to arrival in the ED. The findings for each of the NLC and the overall decision regarding collar removal were recorded on specific case report forms. The primary endpoint was the level of agreement for the overall decision to leave the collar in place. Levels of agreement for the individual NLC were also examined.

RESULTS

In total, 183 patients were recruited. The level of 'safe agreement' where nursing and medical staff agreed that the collar should be left in place was 94.3% (95% CI: 89.5-97.2%). Agreement with regard to individual NLC varied from good to fair. The median times from patient arrival to completion of study nurse and doctor assessments were 14 min (interquartile ranges [IQR] 5-30) and 29 min (IQR 15-47), respectively.

CONCLUSION

The study demonstrated a high level of agreement between nursing and medical staff for stable low-risk trauma patients.

Scope creep: when nursing practice moves beyond traditional boundaries: an evidence-based example using procedural sedation

The finite boundaries of the scope of nursing practice are constantly changing. One could expect that with new technology and advances in science, the interventions and assessments nurses perform will change over time. The practice of nursing is governed by nursing, however, it is often challenged by our partners in medicine, and frequently driven by time constraints or reimbursement issues. This article reviews a case example in which nurses were asked to expand their practice to assume responsibility for duties that were once traditionally performed by physicians. An evaluation of a practice problem using an evidence-based approach applying the PICO (population, intervention, comparison, outcome) method is explored. Proposed steps to minimize risk and staff moral distress are also described.

A long-term follow-up study of chest pain patients: effect of panic disorder on mortality, morbidity, and quality of life

AIMS

The aim was to assess the association between panic disorder (PD) and the long-term outcome of chest pain patients with or without coronary artery disease (CAD).

METHODS

Patients (n = 199) consecutively referred to a cardiology outpatient clinic because of chest pain were reassessed after 9 years. At the initial examination 16% suffered from CAD and 38% from PD. Data were collected on mortality, cardiac events, cardiac risk factors, chest pain, anxiety and depression (SCL-90-R), and health-related quality of life (SF-36).

RESULTS

The death rate in the study population was not significantly different from that in the general population and no significant associations were found between PD at baseline and mortality and cardiac morbidity at follow-up. PD was associated with significantly higher follow-up scores of chest pain intensity (p = 0.025), depression (p = 0.005), anxiety (p = 0.039), and poorer health-related quality of life: physical functioning (p = 0.004), role physical (p = 0.001), body pain (p = 0.007), and general health (p < 0.001).

CONCLUSIONS

PD has a negative long-term effect on psychological and physical well-being of chest pain patients which emphasizes the necessity of identifying PD patients and offering them adequate treatment.

Reliability of a computerized version of the Pediatric Canadian Triage and Acuity Scale

BACKGROUND

The use of a standardized triage tool allows better comparison of the patients; a computerized version could theoretically improve its reliability.

OBJECTIVES

To compare the interrater agreement of the Pediatric Canadian Triage and Acuity Scale (PedCTAS) and a computerized version (Staturg).

METHODS

A two-phase experimental study was conducted to compare the interrater agreement between nurses assigning triage level to written case scenarios using either traditional PedCTAS or Staturg. Participants were nurses with at least one year of experience in pediatric emergency medicine and trained at triage. Each of the 54 scenarios was evaluated first by all nurses using either one of the strategies. Four weeks later, they evaluated the same scenarios using the other tool. The primary outcome was the interrater agreement measured using kappa score.

RESULTS

Eighteen of the 29 eligible nurses participated in the study. The computerized triage tool showed a better interrater agreement, with a Staturg kappa score of 0.55 (95% confidence interval = 0.53 to 0.57) versus a PedCTAS kappa score of 0.51 (95% confidence interval = 0.49 to 0.53). The computerized version was also associated with higher agreements for scenarios describing patients with the highest severity of triage (kappa score of 0.72 vs. 0.55 for level 1; kappa score of 0.70 vs. 0.51 for level 2).

CONCLUSIONS

A computerized version of the PedCTAS showed a statistically significant improvement in the interrater agreement for nurses evaluating the triage level of 54 clinical scenarios, but this difference has probably small clinical significance.

Emergency department thoracotomy in Jamaica: A case controlled study

Increasing numbers of severely injured patients have been presenting to Emergency Rooms worldwide due to advances in pre-hospital trauma care. Some of these patients may be candidates for Emergency Department Thoracotomy (EDT). Large advisory bodies have identified selection criteria for EDT in Developed Countries, but there are no regional statistics to guide the selection process in Developing Caribbean Nations. This study evaluates outcomes with EDT at the University Hospital of the West Indies in Jamaica in order to determine factors that could predict survival in this setting. A retrospective study was performed over 11 years from January 1995 to January 2006 examining patients who had EDT at the University Hospital of the West Indies. There were 13 procedures performed over 11 years, with two early survivors (15%) and one patient surviving to discharge. The factors that have been found to be significant predictors of mortality include gunshot injuries, extra-thoracic injury location, inadequate pre-hospital resuscitation, prolonged transportation time and the absence of signs of life on arrival to hospital. Several health care limitations have been uncovered in this setting that must be improved if we are to expect improved outcomes. Focused preparation of the Emergency Room is an initial step that can be easily achieved. We also need to define strict management protocols using selection criteria that are tailored to our local environment in order to exclude futile procedures in unsalvageable patients.

Impact of a triage liaison physician on emergency department overcrowding and throughput: a randomized controlled trial

BACKGROUND

Triage liaison physicians (TLPs) have been employed in overcrowded emergency departments (EDs); however, their effectiveness remains unclear.

OBJECTIVES

To evaluate the implementation of TLP shifts at an academic tertiary care adult ED using comprehensive outcome reporting.

METHODS

A six-week TLP clinical research project was conducted between December 9, 2005, and February 9, 2006. A TLP was deployed for nine hours (11 AM to 8 PM) daily to initiate patient management, assist triage nurses, answer all medical consult or transfer calls, and manage ED administrative matters. The study was divided into three two-week blocks; within each block, seven days were randomized to TLP shifts and the other seven to control shifts. Outcomes included patient length of stay, proportion of patients who left without complete assessment, staff satisfaction, and episodes of ambulance diversion.

RESULTS

TLPs assessed a median of 14 patients per shift (interquartile range, 13-17), received 15 telephone calls per shift (interquartile range, 14-20), and spent 17-81 minutes per shift consulting on the telephone. The number of patients and their age, gender, and triage score during the TLP and control shifts were similar. Overall, length of stay was decreased by 36 minutes compared with control days (4:21 vs. 4:57; p = 0.001). Left without complete assessment cases decreased from 6.6% to 5.4% (a 20% relative decrease) during the TLP coverage. The ambulance wait time and number of episodes of ambulance diversion were similar on TLP and control days.

CONCLUSIONS

A TLP improved important outcomes in an overcrowded ED and could improve delivery of emergency medical care in similar tertiary care EDs.

Ontology-enhanced automatic chief complaint classification for syndromic surveillance

Emergency department free-text chief complaints (CCs) are a major data source for syndromic surveillance. CCs need to be classified into syndromic categories for subsequent automatic analysis. However, the lack of a standard vocabulary and high-quality encodings of CCs hinder effective classification. This paper presents a new ontology-enhanced automatic CC classification approach. Exploiting semantic relations in a medical ontology, this approach is motivated to address the CC vocabulary variation problem in general and to meet the specific need for a classification approach capable of handling multiple sets of syndromic categories. We report an experimental study comparing our approach with two popular CC classification methods using a real-world dataset. This study indicates that our ontology-enhanced approach performs significantly better than the benchmark methods in terms of sensitivity, F measure, and F2 measure.

Over-the-counter medication use for childhood fever: a cross-sectional study of Australian parents

AIM

To report Australian parents' medication (paracetamol, ibuprofen and homeopathic) use in childhood fever management.

METHODS

A cross-sectional survey of 401 Queensland parents of children aged between 6 months and 5 years recruited through advertising (48.4%), face-to-face (26.4%) and snowball (24.4%) methods was conducted. A 17-item instrument was developed; construct and content validity were determined by an expert panel; and item reliability by test-retest with nine parents. Areas targeted were medication use and influences on and barriers to medication use.

RESULTS

Most participants were female, had tertiary education and lived in a major city (mean age 34.6 years). Reducing children's fever with over-the-counter medications was common (91%): 94% of parents reported using paracetamol and 77% reported using ibuprofen. A few (3.7%) used homeopathic remedies. Dosage was determined by weight (86.3%), age (84.3%), temperature (32.4%), illness severity (31.4%) and lethargy (20.9%). Frequency was determined by instructions on the medication label (55.3%), temperature (40.6%) and well-being (27.7%). Ibuprofen was administered too frequently by 31.5% (four hourly by 22.8%), and paracetamol by 3.8%. Fifty-two per cent had alternated medications, 65.8% of these for temperatures below 38.5 degrees C. Decisions to alternate were influenced by information from doctors/hospitals (49.5%) and children remaining febrile post-antipyretic (41.7%). Most parents reported over-the-counter medications as potentially harmful (73.2%), citing liver (38.2%), stomach (26.4%) and kidney (18.6%) damage and overdose (35.7%) as concerns. When medications were refused or spat out (44.0%), parents used force (62.4%), different methods (29.5%) or suppositories (20.8%).

CONCLUSIONS

Most parents used over-the-counter medications to reduce fever, often below 38.5 degrees C. The belief that these medications were harmful was overridden by fears of harmful outcomes from fever.

Physician awareness of drug cost: a systematic review

BACKGROUND

Pharmaceutical costs are the fastest-growing health-care expense in most developed countries. Higher drug costs have been shown to negatively impact patient outcomes. Studies suggest that doctors have a poor understanding of pharmaceutical costs, but the data are variable and there is no consistent pattern in awareness. We designed this systematic review to investigate doctors' knowledge of the relative and absolute costs of medications and to determine the factors that influence awareness.

METHODS AND FINDINGS

Our search strategy included The Cochrane Library, EconoLit, EMBASE, and MEDLINE as well as reference lists and contact with authors who had published two or more articles on the topic or who had published within 10 y of the commencement of our review. Studies were included if: either doctors, trainees (interns or residents), or medical students were surveyed; there were more than ten survey respondents; cost of pharmaceuticals was estimated; results were expressed quantitatively; there was a clear description of how authors defined "accurate estimates"; and there was a description of how the true cost was determined. Two authors reviewed each article for eligibility and extracted data independently. Cost accuracy outcomes were summarized, but data were not combined in meta-analysis because of extensive heterogeneity. Qualitative data related to physicians and drug costs were also extracted. The final analysis included 24 articles. Cost accuracy was low; 31% of estimates were within 20% or 25% of the true cost, and fewer than 50% were accurate by any definition of cost accuracy. Methodological weaknesses were common, and studies of low methodological quality showed better cost awareness. The most important factor influencing the pattern and accuracy of estimation was the true cost of therapy. High-cost drugs were estimated more accurately than inexpensive ones (74% versus 31%, Chi-square p < 0.001). Doctors consistently overestimated the cost of inexpensive products and underestimated the cost of expensive ones (binomial test, 89/101, p < 0.001). When asked, doctors indicated that they want cost information and feel it would improve their prescribing but that it is not accessible.

CONCLUSIONS

Doctors' ignorance of costs, combined with their tendency to underestimate the price of expensive drugs and overestimate the price of inexpensive ones, demonstrate a lack of appreciation of the large difference in cost between inexpensive and expensive drugs. This discrepancy in turn could have profound implications for overall drug expenditures. Much more focus is required in the education of physicians about costs and the access to cost information. Future research should focus on the accessibility and reliability of medical cost information and whether the provision of this information is used by doctors and makes a difference to physician prescribing. Additionally, future work should strive for higher methodological standards to avoid the biases we found in the current literature, including attention to the method of assessing accuracy that allows larger absolute estimation ranges for expensive drugs.

Patient satisfaction with care for urgent health problems: a survey of family practice patients

PURPOSE

Patient satisfaction is an important health care outcome. This study compared patients' satisfaction with care received for an urgent health problem from their family physician, at an after-hours clinic in which their physician participated, at a walk-in clinic, at the emergency department, from telephone health advisory services, or from more than 1 of those services.

METHODS

We mailed a questionnaire to a random sample of patients from 36 family practices in Thunder Bay, Ontario. We elicited satisfaction with care for the most recent urgent health problem in the past 6 months on a 7-point scale (very dissatisfied to very satisfied).

RESULTS

The response rate was 62.3% (5,884 of 9,397). Of the 5,722 eligible patients 1,342 (23.4%) reported an urgent health problem, and data were available for both services used and satisfaction for 1,227 patients. After adjusting for sociodemographic characteristics and self-reported health status, satisfaction with care received for most recent urgent health problem was significantly higher among patients who visited or spoke to their family physician (mean 6.1; 95% confidence interval [CI], 5.8-6.4) compared with all other services (all P <.004, adjusted for multiple comparisons), with the exception of patients who used the after-hours clinic affiliated with their physician, whose satisfaction was not significantly different (mean 5.6; 95% CI, 5.2-6.0).

CONCLUSIONS

Satisfaction was highest for patients receiving care from their own family physician or their physician's after-hours clinic. These results are important for new primary care models that emphasize continuity and after-hours availability of family physicians.