Decision rule and utility of routine urine toxicology screening of trauma patients.

The objective of this study was to determine the impact of urine drug screening of major trauma victims on patient care and derive a decision rule for selective screening. Retrospective chart review of 170 trauma patients at a Level I Trauma Center, certified by the American College of Surgeons, was undertaken. The decision rule was developed by Classification and Regression Tree (CART) analysis to maximize sensitivity, with secondary attention to specificity. Eighty-nine percent of trauma patients were screened, while 26.0% had positive tests for illicit drugs. Serum ethanol was positive in 31.2%, over the legal limit of 0.08 g/dl. Both a legally intoxicated ethanol level and positive illicit drug screen were found in 11.0%. Additionally, 42.5% of patients with a positive illicit drug screen were also intoxicated (blood alcohol level above legal limit). Conversely, 35.4% of legally intoxicated patients also had positive illicit screens. Drug treatment referral occurred in 17.5% of positive drug screens. For urgent surgery, median time to drug screen result was 117 min, while median time to operation was 110 min. Of operative patients, 57% had the drug screen result recorded on the chart at any time, but only 14.3% of illicit screens were noted in the anaesthesia record. For all patients with and without operations, 71.1% had the result noted on the chart. We derived a 'low risk rule' to identify most patients with positive illicit drug screens (95% sensitivity, 55% specificity, 66% positive and 93% negative predictive values; accuracy 74%), while limiting the number of unnecessary tests. The rule avoids screening 48% of patients, missing only 5% of true positives. It is concluded that urine screening for illicit drugs in trauma patients can be performed selectively according to a decision rule based on demographics, mechanism of injury and time of presentation. This rule, which captures most positive screens while eliminating screening in low risk patients, could result in significant cost savings. Only prospective validation of these rules in patient populations of other trauma centres will offer confidence that the decision points are valid. Urine drug screening infrequently affected patient management or resulted in drug treatment referral in our sample. We call for increased vigilance in recording results and referring patients for treatment.

Motivations for a career in emergency medicine: a profile of the 1996 US applicant pool.

INTRODUCTION: Although some studies have tried to assess the factors leading to choice of specialty, none have been specific to emergency medicine (EM). With a doubling of the number of EM residency programs in the past decade, an assessment of the career motivations of residents is in order. OBJECTIVES: To identify and rank the factors that lead candidates to choose EM as a career. METHODS: Fifty-four participating EM programs returned a total of 393 anonymous surveys completed by their 1996 National Residency Matching Program (NRMP) interviewees. The survey asked respondents to rank 12 factors on a 5-point (0-4) Likert scale. RESULTS: Respondents ranked the 12 motivating factors in the following descending order of importance: diversity in clinical pathology, emphasis on acute care, flexibility in choice of practice location, flexibility of EM work schedules, previous work experience in EM, greater availability of EM faculty for bedside teaching, strong influence of an EM faculty advisor or mentor, relatively shorter length of training, better salaries for EM than for primary care specialties, the presence of an EM residency at the student's medical school, perception that EM residents have more time to moonlight and popularity of EM among medical students. CONCLUSION: US applicants appear to choose a career in EM largely because of clinical factors (diversity of clinical pathology and emphasis on acute care) and practice-related factors (flexibility in practice location and schedule).

EMS Adherence to a Pre-hospital Cervical Spine Clearance Protocol.

PURPOSE: To determine the degree of adherence to a cervical spine (c-spine) clearance protocol by pre-hospital Emergency Medical Services (EMS) personnel by both self-assessment and receiving hospital assessment, to describe deviations from the protocol, and to determine if the rate of compliance by paramedic self-assessment differed from receiving hospital assessment. METHODS: A retrospective sample of pre-hospital (consecutive series) and receiving hospital (convenience sample) assessments of the compliance with and appropriateness of c-spine immobilization. The c-spine clearance protocol was implemented for Orange County EMS just prior to the April-November 1999 data collection period. RESULTS: We collected 396 pre-hospital and 162 receiving hospital data forms. From the pre-hospital data sheet, the percentage deviation from the protocol was 4.0% (16/396). Only one out of 16 cases that did not comply with the protocol was due to over immobilization (0.2%). The remaining 15 cases were under immobilized, according to protocol. Nine of the under immobilized cases (66%) that should have been placed in c-spine precautions met physical assessment criteria in the protocol, while the other five cases met mechanism of injury criteria. The rate of deviations from protocol did not differ over time. The receiving hospital identified 8.0% (13/162; 6/l6 over immobilized, 7/16 under immobilized) of patients with deviations from the protocol; none was determined to have actual c-spine injury. CONCLUSION: The implementation of a pre-hospital c-spine clearance protocol in Orange County was associated with a moderate overall adherence rate (96% from the pre-hospital perspective, and 9250 from the hospital perspective. p = .08 for the two evaluation methods). Most patients who deviated from protocol were under immobilized. but no c-spine injuries were missed. The rate of over immobilization was better than previously reported, implying a saving of resources.

Emergency medicine residency applicant educational debt: relationship with attitude toward training and moonlighting.

OBJECTIVES: Heated debate persists regarding the role of resident moonlighting in emergency medicine (EM). The attitudes of EM residency applicants have not been assessed. The objectives of this study were to assess: 1) the level of educational debt among EM residency applicants, 2) their perception of increased risk potential to patients from unsupervised EM resident practice, and 3) their opposition to laws restricting moonlighting. The authors then report the relationship between the degree of indebtedness and these stated positions. METHODS: Fifty-four EM residency programs returned 393 responses to a 1996 anonymous survey. Applicants recorded: 1) their indebtedness, 2) whether they believed that EDs should hire only physicians who have completed full training in an EM residency, and 3) whether they believed that unsupervised EM practice prior to completing EM training carries a higher risk of adverse patient outcomes. The authors used a t-test and logistic regression to determine whether there was any significant difference in debt between responders who answered yes and those who answered no to the various questions. A p-value < 0.05 was considered significant. RESULTS: The mean +/- SD debt was $72,290 +/- 48,683 (median $70,000). Most EM applicants (84.8%) agreed that unsupervised medical care by EM residents carries a higher risk of adverse patient outcomes. Paradoxically, only half the applicants opposed a moonlighting ban. Responses did not statistically correlate with educational debt. CONCLUSIONS: Emergency medicine residency applicant debt is large. The EM applicants' opposition to laws that would restrict moonlighting was mixed. This was inconsistent with the majority acknowledging an increased risk potential to patients. Nearly all EM applicants would still select EM as a career, even if moonlighting were to be banned.

Physician versus computer knowledge of potential drug interactions in the emergency department.

INTRODUCTION: Proliferation of Food and Drug Administration-approved drugs makes it impossible for emergency medicine (EM) faculty to stay current on potential interactions between drugs, and with diseases, laboratory tests, and ethanol. A computer database may augment physician knowledge. OBJECTIVES: To compare the performance of EM faculty and an "expert" emergency physician (EP) with that of a criterion standard computer database in identifying potential drug interactions, and to report the incidence of drug-ethanol and drug-laboratory test interactions. METHODS: This was a retrospective review of 276 emergency department charts for drug, ethanol, lab, and medical history. Evaluation by both EM faculty and an "expert" EP of patient history was done to identify potential interactions, and comparison with the Micromedex Drug-Reax database for potential interactions (graded minor, moderate, or major) was made. Clinical significance of potential interactions was judged by a second EM faculty member. RESULTS: Seventeen percent of the patients had potential drug-drug interactions, and 25% of these were judged to be clinically significant. Up to 52% of the patients had potential drug-ethanol interactions, while 38% of the patients could have potential drug-lab interactions. Sensitivity, specificity, and positive and negative predictive values of the EM faculty for potential drug-drug interactions compared with the computer were poor, at 14%, 58%, 6%, and 23%, respectively. The corresponding values for the "expert" EP were 25%, 86%, 26%, and 85%. The "expert" EP was statistically better than the EM faculty, but still less sensitive and predictive than the computer. CONCLUSIONS: A computer can aid the physician in avoiding potential drug interactions. Prospective validation of these findings should be done.

Earthquake epidemiology: the 1994 Los Angeles Earthquake emergency department experience at a community hospital.

INTRODUCTION: To assess the volume of patients and the composition of their injuries and illnesses that presented to an emergency department (ED) close to the epicenter of an earthquake that occurred in a seismically prepared area. METHODS: A retrospective analysis of data abstracted from charts and ED logs for patient census and types of injuries and illnesses of the patients who presented in the ED of a community hospital before and after the earthquake (6.8 Richter scale) that occurred in 1994 in Los Angeles. Illnesses were classified as trauma- and non-trauma related. Data were compared with epidemiological profiles of earthquakes in seismically prepared and unprepared areas. RESULTS: A statistically significant increase in ED patient census over baseline lasted 11 days. There was a large increase in the number of traumatic injuries such as lacerations and orthopedic injuries during the first 48 hours. Beginning on the third day after the event, primary care conditions predominated. When the effects of the LA quake were compared with those of similar Richter magnitude and disruptive capability, the ED epidemiology profile was similar to those in seismically unprepared areas, except for the total number of casualties. CONCLUSION: The majority of patients with traumatic injuries presented within the first 48 hours. The increase relative to baseline lasted 11 days. Efforts to develop disaster response systems from resources outside the disaster-stricken area should focus on providing mostly primary care assistance. Communities in seismically prepared areas could require external medical assistance for their EDs for up to two weeks following the event.

Quantification of procedures and resuscitations in an emergency medicine residency.

Currently, there are no data that govern the number of procedures that are necessary to promote competence during emergency medicine (EM) training. Nonetheless, the Residency Review Committee requires each program to report the average number of procedures and resuscitations performed by its residents. For 7 years, we have used a computer database to track resuscitation and procedure experience for 42 residents. We have documented resident experience both in our 36,000-visit Level I Trauma Center emergency department and during off-service rotations in our 400-bed university teaching hospital. We report data from four graduating classes (n = 24). We estimate that residents have recorded 60% of the actual procedures performed. The 24 residents documented 11,947 procedures, averaging 498 per resident (range 264-1055), and participated in 3432 resuscitations, or 143 per resident (range 64-379). Mean and standard deviations are reported for 20 specific EM procedures and 4 types of resuscitations. EM residents perform a large number of procedures, but there is wide inter-resident variability. There is no documentation that some residents perform even one of some rare but critical procedures. This tracking system suggests, then, that procedure simulations, or cadaver and animal models, must be developed and used to enhance experience. This program can be modified to track resident experience in any specialty, as well as to document supervision by faculty and support credentialling inquiries.

Methylprednisolone disposition kinetics in patients with acute spinal cord injury.

STUDY OBJECTIVE: To evaluate the pharmacokinetics of high-dose methylprednisolone in patients with acute spinal cord injury (ASCI). DESIGN: Open-label study of consecutive patients with ASCI, and retrospective review of able-bodied controls. SETTING: Emergency Medicine Department of a large, urban, university-affiliated, tertiary care trauma center. PATIENTS: Eleven men with ASCI. INTERVENTIONS: Methylprednisolone sodium succinate 30 mg/kg intravenous bolus, followed by 5.4 mg/kg/hour for 23 hours, administered according to the second National Acute Spinal Cord Injury Study (NASCIS 2) protocol. MEASUREMENTS AND MAIN RESULTS: The total systemic clearance of methylprednisolone was significantly less in acutely injured patients (mean +/- SD 30.04 +/- 12.03 L/hr) than in historically reported able-bodied controls (44.70 +/- 4.90 L/hr). An inverse correlation between the neurologic level of injury and systemic clearance was seen. No differences in volume of distribution were discernible between patients (126.90 L) and controls (135.45 L). CONCLUSION: Patients with acute spinal cord injury administered methylprednisolone according to the NASCIS 2 protocol had an apparent decrease in total systemic clearance of the drug without a commensurate change in volume of distribution. Additional studies are warranted to confirm these findings and assess the potential impact of diminished clearance on the efficacy of the agent in ASCI.

The threat of funding cuts for graduate medical education: survey of decision makers.

OBJECTIVE: To assess the potential actions of medical school deans, graduate medical education (GME) committee chairs, and hospital chief executive officers (CEOs) regarding future funding reductions for residency training. Specifically, institutions with emergency medicine (EM) residencies were surveyed to see whether EM training was disproportionally at risk for reductions. METHODS: An anonymous 2-page survey was used. Ninety-eight EM residency programs were identified using the American Medical Association Graduate Medical Education Directory 1994-95. Seventy deans, 102 GME chairs, and 97 hospital CEOs were identified. The survey posed a hypothetical 25% forced reduction in residency positions and asked the decision makers for their responses. Options included: 1) proportional reductions of training positions from all residencies, 2) proportional reductions in either primary care or specialty residency positions, or 3) reduction or elimination of specific training programs. The survey asked for a first and second choice of residencies to be reduced or eliminated from an alphabetical list of 17. The survey elicited explanations for each program reduction. RESULTS: 200 (74%) of 269 surveys were returned. Eighty-four responders selected specific residencies to be reduced or eliminated. EM was selected 8 times, making EM the seventh most vulnerable residency to be targeted for reductions. The decision makers who selected proportional reductions chose to reduce across all residencies 32 times, among only the specialty residencies 129 times, and among only the primary care residencies 3 times. CONCLUSIONS: In the setting of anticipated residency cuts, favored proportional reductions in specialty residencies would likely affect EM training. However, most GME decision makers with an existing EM residency program do not consider the EM residency a top choice to be reduced or eliminated.

Emergency medicine resident moonlighting: a survey of program directors. CORD Task Force on Resident Moonlighting.

OBJECTIVES: 1) To systematically describe emergency medicine (EM) program directors' perceptions of the benefits and risks of resident moonlighting. 2) To assess moonlighting policies of EM residencies, the degree of compliance with these policies, and the methods of dealing with residents who are out of compliance. METHODS: A written survey was mailed or hand-delivered to all allopathic and osteopathic EM residency directors in the United States in 1992-93. Incomplete and ambiguous surveys were completed by phone. RESULTS: There was a 96% response rate (113/118). The average EM resident clinical workweek ranged from 38 to 50 hours while the resident was assigned to ED rotations. Most (90%) of the program directors believe moonlighting interferes with residency duties to some degree. Few (10%) programs prohibit moonlighting altogether, although 44% limit moonlighting to an average of 41.5 hours per month. Program directors believe residents moonlight primarily for financial reasons. Most (60%) of the program directors believe moonlighting offers experience not available in the residency, primarily related to autonomous practice. Fifteen programs reported residents who had been sued for malpractice while moonlighting, with one program director named along with the resident. One third of program directors have penalized residents for abuse of moonlighting privileges. CONCLUSIONS: EM residency directors are concerned about the effect of moonlighting on resident education. The directors' concerns regarding litigation, excessive work hours, and interference with residency duties are balanced by a general acceptance of the financial need to supplement residency income.

National survey of emergency medicine resident moonlighting. SAEM Inservice Examination Survey Task Force.

OBJECTIVES: To survey emergency medicine (EM) residents regarding moonlighting practices and perceptions for clarifying: 1) resident moonlighting remuneration; 2) any association of perceived educational debt with moonlighting income and hours; and 3) perceptions related to moonlighting (including motivations, impact on resident training, and potential medicolegal difficulties). METHODS: A confidential, voluntary survey was administered to all allopathic EM residents in the United States. This written survey was provided to residents at their in-service examinations. Completed forms were anonymously returned by residents or local administrative staff to a central site where all identifiers were removed prior to mailing en mass to the investigators. Comparisons between groups were made using chi-square tests and correlations were assessed using the Pearson correlation coefficient. RESULTS: Seventy-six percent (1,826/2,407) of the surveys were returned. There was a weak correlation (r = 0.11) between educational debt and moonlighting hours for residents in the second year and above, but no association of debt with moonlighting income. Most (88%) of the residents reported that their programs permitted moonlighting. Nearly half (49%) reported that they did moonlight in some way. Most (82%) thought moonlighting provided experience not available in the residency. Only 13 (2%) respondents stated they had been sued for malpractice while moonlighting. Most (66%) moonlighting respondents stated that they moonlighted for financial reasons, with educational debt the primary motivating factor. Of the moonlighting residents, 28% were unsure of their type of malpractice insurance coverage, and 9% had no coverage at all. CONCLUSIONS: Education about EM practice matters including the risks of moonlighting should begin early in residency, because moonlighting is widespread. Residents are vulnerable to medicolegal action while moonlighting and have insufficient knowledge of their malpractice insurance coverage. Although educational debt is perceived as a strong motivating factor for moonlighting, there is only a weak relationship between educational debt and moonlighting hours.

Pediatric pain control and conscious sedation: a survey of emergency medicine residencies.

OBJECTIVE: To determine the availability and relative use of pediatric analgesia and sedation at sites of U.S. emergency medicine residency training programs. METHODS: A mail/telephone survey of residency directors at 80 U.S. emergency medicine residencies regarding resident experience with pediatric analgesia and sedation for painful procedures conducted during November 1991. RESULTS: Sixty of 80 surveys (75%) were completed and available for analysis. Emergency medicine faculty supervised conscious sedation and analgesia in 87% of responding programs, while pediatrics faculty and pediatrics-emergency medicine fellows supervised in the remainder. Ninety-three percent of the programs had sedating agents available in the emergency department; only four programs needed to have drugs brought from the pharmacy. Thirty-four programs (57%) had formal protocols for the administration of these drugs. Seventy-seven percent of the programs had airway resuscitation equipment at the bedside, while only 63% brought resuscitation drugs. However, 60% of the programs reported complications of sedation, including respiratory depression, prolonged sedation, agitation, and vomiting. The most commonly used agents were midazolam (82%), meperidine alone (68%) and with promethazine and chlorpromazine (67%), and chloral hydrate (67%). Only 25% of the programs used nitrous oxide, and 30% used ketamine. CONCLUSIONS: Emergency medicine residencies generally have available agents for pain control and conscious sedation in children, although the agents used vary widely. Appropriate instruction by trained faculty should enhance resident experience with pediatric pain control and sedation.

Reversal of orphenadrine-induced ventricular tachycardia with physostigmine.

A 3-year-old boy developed confusion, generalized tonic-clonic seizures, and sustained ventricular tachycardia following ingestion of an unknown quantity of orphenadrine (Norflex). Although refractory to precordial thump, synchronous cardioversion, and lidocaine, the ventricular tachycardia was reversed by intravenous administration of the tertiary acetylcholinesterase inhibitor physostigmine. We discuss the underlying physiology and manifestations of anticholinergic overdose, the specific manifestations of orphenadrine overdose, and the current recommendations regarding the utilization and toxicity of physostigmine in the treatment of anticholinergic syndromes and orphenadrine intoxication.

Computerized tracking of emergency medicine resident clinical experience.

Although we commonly assume that because residents spend a given number of months in the emergency department they achieve adequate exposure to all necessary clinical entities, this has never been shown. We suspect, rather, that great variability exists among residents in the number and variety of patients they see; and that with respect to the ED, there are important diagnoses that are rare or absent in the clinical pathology of a training program. To confirm these hypotheses, we implemented a computerized system of recording patients and diagnoses managed in the ED by the 33 residents of the University of Illinois Affiliated Hospitals Emergency Medicine Residency. We collected data for nine months and accumulated 2,152 shifts of clinical experience. These data confirm our hypotheses. We found that senior residents managed an average of 11.9 +/- 2.3 patients per ten-hour shift, but the quickest resident saw almost twice as many patients as the slowest. Junior residents saw fewer patients, 8.5 +/- 1.4 patients per shift, but maintained a twofold difference between the fastest and slowest. Furthermore, there are important diagnoses that present too rarely for each resident to become facile in their management. We found that 22.7% of the 554 diagnoses listed in the Emergency Medicine Core Content never once presented to the ED. An additional 34.7% of these diagnoses did present, but so rarely that each resident could not possibly manage one case during a residency. The Length of Training Report of the American College of Emergency Physicians provides objective guidelines for the number of encounters a resident should have with 283 clinical entities. In this study, residents fell short of these guidelines with 50.5% of diagnoses. While absolute quantity of exposure does not assure competence in management, we recommend that each residency monitor the experience of its residents. This allows a residency to change its curriculum to make optimum use of available pathology, as well as to supplement deficiencies in clinical experience with case simulations.