Rural Hospital Transfer Patterns before and after Implementation of a Statewide Trauma System

Objective: To evaluate trauma transfer practices in rural Oregon before and after implementation of a statewide trauma system. Methods: A pre- vs post-system implementation (historical control) analysis of trauma transfer practices was performed using a sample of rural ED trauma patients from 4 Level-3 and 5 Level-4 trauma hospitals. Medical records of patients with specific index injury diagnoses in 4 anatomic regions (head, chest, liver/ spleen, and femur/open-tibia) were reviewed for a 3-year period before statewide trauma system implementation and 3 years after hospital trauma designation. Results: Of 1,057 patients entered into the database, 532 were evaluated during the pre-system period and 525 were evaluated during the post-system period. Overall, 47% had head injuries, 34% had chest injuries, 23% had femur/open-tibia injuries, and 12% had spleen/liver injuries. There were 142 (13%) patients with an injury in >1 index area. After trauma system implementation, there was a significant increase in the proportion of ED trauma patients transferred from Level-4 trauma hospitals (32% vs 68%, p < 0.001), with a corresponding decrease in the number of hospital admissions to these facilities (63% to 29%, p < 0.001). Significant increases in the proportion transferred from Level-4 trauma hospital EDs were noted for all index injury categories (p < 0.001). Trauma patients presenting to Level-4 EDs were significantly more likely to be transferred to Level-2 facilities (66% vs 82%, p = 0.030), while patients at Level-3 facilities were significantly more likely to be transferred to Level-1 centers (2% vs 14%, p = 0.002) following trauma system implementation. Multiple logistic regression modeling indicated that implementation of the statewide trauma system was an independent predictor of rural trauma patient transfer from Level-4 hospitals, while transfers from Level-3 facilities were dependent on type of injury. Conclusion: Implementation of the Oregon statewide trauma system was associated with a redistribution of rural trauma patients to trauma hospitals with greater therapeutic resources.     

Oregon Trauma System: Change in Initial Admission Site and Post-admission Transfer of Injured Patients

Objective: Associate statewide trauma system development with a change in the percentage of injured patients initially hospitalized at Levels I and II categorized trauma hospitals and a change in the length of stay (LOS) prior to arrival at a Level I or II hospital (PRE-LOS) and total LOS (T-LOS) for post-admission transfer patients. Methods: A retrospective analysis was performed using a hospital discharge database of 235,395 discharges with codes for acute injury managed at 74 acute care hospitals in Oregon State from 1983 to 1991. Primary outcome measures were admission site and transfer patient PRE-LOS and T-LOS. Predictor variables included category of initial hospital admission site, injury severity scale (ISS) score, head injury, age, and status of trauma system (pre-system, 1983 to 1987; transitional, 1988 to 1989; and post-system, 1991 to 1992). Results: There was a significant increase in the percentage of initial admissions to hospitals with Level I or II categorization (17.6%, 26.2%, and 27.6% for the three periods of development, respectively; p < 0.00001). The percentage of patients with ISS scores greater than 15 admitted initially to Level I or II hospitals increased from 33.4% to 52.6% and 57.3%; p < 0.00001). Only 1,059 (0.57%) of 185,321 patients initially admitted to Level III, Level IV, or noncategorized hospitals were transferred to a Level I or II hospital. Mean PRE-LOS for the 1,059 transferred patients showed a significant decrease with system development (2.3, 1.9, and 1.8 days, respectively; p < 0.02). When adjusted for age, ISS score, and head injury effects, mean T-LOS was significantly reduced for the transitional and post-system periods (p < 0.05). Conclusions: In Oregon, development of a statewide trauma system was associated with increased initial admissions to Level I and II trauma hospitals. For those patients transferred to higher levels of care post-admission, hospital LOSs were decreased with trauma system development.     

Guardian Availability in Children Evaluated in the Emergency Department for Blunt Head Trauma

Background: Enrolling children in research studies in the emergency department (ED) is typically dependent on the presence of a guardian to provide written informed consent. Objectives: The objectives were to determine the rate of guardian availability during the initial ED evaluation of children with nontrivial blunt head trauma, to identify the reasons why a guardian is unavailable, and to compare clinical factors in patients with and without a guardian present during initial ED evaluation. Methods: This was a prospective study of children (<18 years of age) presenting to a single Level 1 trauma center after nontrivial blunt head trauma over a 10‐month period. Physicians documented patient history and physical examination findings onto a structured data form after initial evaluation. The data form contained data points regarding the presence or absence of the patient’s guardian during the initial ED evaluation. For those children for whom the guardian was not available during the initial ED evaluation, the physicians completing the data forms documented the reasons for the absence. Results: The authors enrolled 602 patients, of whom 271 (45%, 95% confidence interval [CI] = 41% to 49%) did not have a guardian available during the initial ED evaluation. In these 271 patients, 261 had reasons documented for lack of guardian availability, 43 of whom had multiple reasons. The most common of these was that the guardian did not ride in the ambulance (51%). Those patients without a guardian available were more likely to be older (mean age, 11.4 years vs. 7.6 years; p < 0.001), be victims of a motor vehicle collision (MVC; 130/268 [49%] vs. 35/328 [11%]; p < 0.001), have a Glasgow Coma Scale (GCS) score <14 (21/269 [7.8%] vs. 11/331 [3.3%]; p = 0.02), and undergo cranial computed tomography (CT) scanning (224/271 [83%] vs. 213/331 [64%]; p < 0.001). Multivariate analysis identified similar independent risk factors for lack of guardian presence. Conclusions: Nearly one‐half of children with nontrivial blunt head trauma evaluated in the ED may not have a guardian available during their initial ED evaluation. Patients whose guardians are not available at the time of initial ED evaluation are older and have more severe mechanisms of injury and more serious head trauma. ED research studies of pediatric trauma patients that require written informed consent from a guardian at the time of initial ED evaluation and treatment may have difficulty enrolling targeted sample size numbers and will likely be limited by enrollment bias.     

Use of resuscitation skills by paramedics caring for critically injured children in oregon

Objectives. 1) To perform a statewide analysis of the frequency of major pediatric trauma cases and the use of resuscitation skills by paramedics (EMT-Ps). 2) To determine whether EMT-Ps use resuscitation skills less frequently for injured children than for older patients.

Methods. Study Design: Retrospective, database analysis of major trauma cases. Setting and Population: 1995 statewide trauma registry data for patients with EMT-P scene care.

Observations. The database included patient demographics, field vital signs, field procedures [e.g., intravenous (IV) line placement, chest compressions, needle thoracostomy, endotracheal intubation], field medication, and vital signs at ED presentation. Data Analysis: Patients aged ≤ 12 years (“pediatric”) were compared with those aged >12 years (“older”). Analyses of patients with tachycardia, hypotension, and obtundation were performed using χ² analysis (α = 0.05).

Results. Of 3,502 trauma patients managed by an EMT-P, only 297 (8%) were aged ≤ 12 years. Fewer pediatric patients (18%) than adults (27%) had an injury severity scale score ≤ 16, p < 0.005. The frequency of most resuscitation skills and the administration of medications were not statistically different between patient groups. However, IVs were four times more likely to be placed in adults (76%) than in pediatric patients (42%), p < 0.001. Subanalyses indicated fewer pediatric patients with tachycardia (p = 0.02) or hypotension (p = 0.02) received an IV, compared with adults who had similar physiologic parameters. Obtunded patients were equally likely to receive endotracheal intubation, although the procedure was rarely used (20%).

Conclusions. EMT-Ps infrequently manage seriously injured children. IVs are less frequently placed in pediatric trauma patients, even in the setting of physiologic abnormalities. The contributions of these field procedures to patient outcomes should be evaluated further.     

Minor Head Trauma in Anticoagulated Patients

OBJECTIVE: To determine the incidence of clinically significant intracranial injury in the anticoagulated patient suffering minor head trauma without loss of consciousness (LOC) or acute neurologic abnormality. METHODS: A retrospective chart review was performed based on a computerized search of electronic patient records from six community hospital EDs, one of which is a trauma center. Patients taking warfarin who sustained minor head trauma without LOC having no acute neurologic abnormalities treated from January 1994 to January 1996 were identified using a search of electronic ED records. Charts were reviewed for mechanism of injury, physical examination findings of head injury, and concomitant injury. Prothrombin time and head CT results were recorded if obtained. For those patients not receiving a head CT on ED evaluation, telephone follow-up was performed to determine outcome. RESULTS: There were 65 patients meeting inclusion criteria. Thirty-eight patients had prothrombin times obtained, with ranges from 12.0 sec to 30.7 sec. There was no intracranial injury found in any of the 39 patients having a head CT. Additionally, follow-up on the 26 patients who did not undergo CT scanning revealed no evidence of complications related to their head injuries. CONCLUSIONS: The incidence of clinically significant intracranial injury is extremely low in the anticoagulated patient suffering minor blunt head trauma without LOC or acute neurologic abnormality. CT scanning may not be necessary in these patients. Larger prospective studies are needed to confirm these findings.     

Elder Patients with Closed Head Trauma: A Comparison with Nonelder Patients

Abstract. Objective: Little is known about the circumstances surrounding closed head trauma (CHT) in elders, and how they differ from nonelders. The study objective was to compare the 2 populations for outcome (positive cranial CT scan depicting traumatic injury, or the need for neurosurgery), mechanism of injury, and the value of the neurologic examination to predict a CT scan positive for traumatic injury or the need for neurosurgical intervention. Methods: A retrospective study was conducted by collecting a case series of patients with blunt head trauma who underwent CT scanning, and comparing elder (aged s60 years) with nonelder patients. The setting was the ED of a university-affiliated Level-1 trauma center. Results: Twenty percent of the elders and 13% of the nonelders had CT scans positive for traumatic injury, which conferred a risk ratio of 1.58 (95% CI 1.21–2.05). Older women were more at risk for the need for neurosurgery than were younger ones (3.1 vs 0.3%, RR 10.66, 95% CI 1.26–90.46). Among the elders, falls were the dominant mechanism of closed head trauma, followed by motor vehicle collisions (MVCs), then being struck as a pedestrian. In the nonelders, MVCs, falls, and assaults were the most important mechanisms of injury. A focally abnormal neurologic examination imparted an increased risk for both a CT scan positive for traumatic injury (elder 4.39, 95% CI 2.91–6.62; nonelder 7.75, 95% CI 5.53–10.72) and the need for neurosurgery (elder 35.68, 95% CI 4.58–275.89; nonelder 142.58, 95% CI 19.11–1064.22) in both age groups. Conclusions : Significant differences exist between elder and nonelder victims of CHT with respect to mechanisms of trauma and outcomes (CT scan positive for traumatic injury, or the need for neurosurgery).     

ATLS P RACTICES AND S URVIVAL AT R URAL L EVEL III T RAUMA H OSPITALS , 1995-1999

Objective: To determine whether Advanced Trauma Life Support (ATLS) practices characterizing initial resuscitation and interfacility transfer at rural trauma hospitals are associated with risk-adjusted survival. Methods: Retrospective, observational analysis of rural injured patient survival. Process-of-care variables were associated with TRISS (trauma and injury severity score)-derived Z-statistics (95% confidence intervals) for high-risk population subsets (defined below). Inclusion criteria: all patients ≥12 years of age entered into a statewide trauma system, January 1, 1995, to December 31, 1999, and initially presenting to Level III trauma centers (N = 4,961). Exclusion criteria: pronounced dead on arrival (n = 26), directly admitted to hospital (n = 3), and unknown disposition at first hospital (n = 2). Process variables include: intubation in emergency department (ED) given Glasgow Coma Scale (GCS) score < 9 [ INTUB ], administration of blood products in ED given systolic blood pressure (SBP) < 90?mm Hg [ BLOOD ], trauma surgeon presence within 5 minutes of patient arrival given GCS < 9?mm Hg or SBP < 90?mm Hg [ UNSTABLE-TS ], trauma surgeon presence within 5 minutes of patient arrival given injury severity score (ISS) > 15 [ ISS-TS ], transfer to higher level of care given ISS > 20 and no hypotension [ TRAN ], transfer to higher level of care given GCS < 9 [ TRAN-GCS ]. Results: For the high-risk subpopulations, the following Z-scores (with and without an intervention) were found: Conclusions: Some ATLS interventions ( BLOOD , TRAN , and TRAN-GCS ) are associated with improved survival for selected high-risk subgroups in these 21 rural Level III trauma hospitals.     

External injury documentation in major trauma victims is inadequate: Grounds for routine photography in the emergency department?

Objective: There is no widely accepted measure of clinical documentation quality in the ED. The present study creates a measure for comparing the quality of clinical documentation of external injuries with autopsy reports. This is used to discuss the advantages and disadvantages of introducing routine photography to improve clinical documentation of injuries. Methods: This retrospective case series addressed all non‐surviving major trauma patients (Injury Severity Score ≥15) presenting to St. Vincent's Hospital ED, Sydney, within the 5 year period from 1 July 2002 to 30 June 2007. Comparison between clinical and autopsy documentation of external injuries was completed for each major trauma patient. Results: Of the 48 major trauma patients, there were an average of 11.6 injuries missed in documentation per patient (P < 0.001, 95% CI 8.6–14.6). ED documentation recorded on average 29% (95% CI 26%?32%) of the external injuries that appeared in the autopsy report. We call this percentage the external injury documentation rate. The external injury documentation rate was influenced by injury count and body region, but was not influenced by age, sex, severity (using the Abbreviated Injury Scale and Injury Severity Score), or whether the clinician used a trauma survey or standard progress notes or not, and there was no visible trend over time. Conclusion: Clinical documentation of external injuries in major trauma is poor. This is presumably because of many factors, including time pressures and high‐stress environments. A possible strategy to improve this documentation is routine photography, which should offer both clinical and legal benefits.     

The Frequency of Unsuspected Minor Illness or Injury in Intoxicated Patients

Objective: To determine the frequency of unsuspected minor illness or injury in a group of patients frequently seen in the ED for acute intoxication.
Methods: The medical records of the 20 patients seen most frequently in the ED for acute intoxication in 1993 were reviewed for the number of ED visits for intoxication, the number of associated documented episodes of minor trauma or illness, the extent of ED workup of discovered illness or injury, and patient disposition from the ED.
Results: The 20 study patients were evaluated in the ED 1,858 times in 1993 for acute intoxication, a mean of 92.5 visits/patient (±26.6). The most frequent injury was minor trauma above the neck, occurring a mean of 9 times (±3.6) in each of the study patients during 1993. Evaluation included repeated neurologic examinations and frequent radiography of the cervical spine ( n = 80), skull ( n = 5), facial bones ( n = 6), and mandible ( n = 5). A limited number of head CT scans also were done ( n = 8). The most frequent minor illnesses were gastritis ( n = 7), managed with hydration, and mild hypothermia ( n = 6), managed with passive rewarming.
Conclusions: The incidence of unsuspected minor illness or injury in this patient group was substantial. While most unsuspected medical problems had little clinical significance, some were potentially dangerous, and some necessitated hospitalization (e.g., hypothermia, hematemesis, and respiratory depression).     

Pain Scores Improve Analgesic Administration Patterns for Trauma Patients in the Emergency Department

OBJECTIVE: To determine the efficacy of pain scores in improving pain management practices for trauma patients in the emergency department (ED). METHODS: A prospective, observational study of analgesic administration to trauma patients was conducted over a nine-week period following educational intervention and introduction of verbal pain scores (VPSs). All ED nursing and physician staff in an urban Level I trauma center were trained to use the 0-10 VPS. Patients younger than 12 years old, having a Glasgow Coma Scale score (GCS) <8, or requiring intubation were excluded from analysis. Demographics, mechanism of injury, vital signs, pain scores, and analgesic data were extracted from a computerized ED database and patients' records. The staff was blinded to the ongoing study. RESULTS: There were 150 patients studied (183 consecutive trauma patients seen; 33 patients excluded per criteria). Pain scores were documented for 73% of the patients. Overall, 53% (95% confidence interval [CI] = 45% to 61%) of the patients received analgesics in the ED. Of the patients who had pain scores documented, 60% (95% CI = 51% to 69%) received analgesics, whereas 33% (95% CI = 18% to 47%) of the patients without pain scores received analgesics. No patient with a VPS < 4 received analgesics, whereas 72% of patients with a VPS > 4 and 82% with a VPS > 7 received analgesics. Mean time to analgesic administration was 68 minutes (95% CI = 49 to 87). CONCLUSIONS: Pain assessment using VPS increased the likelihood of analgesic administration to trauma patients with higher pain scores in the ED.     

Early Neurosurgical Procedures Enhance Survival in Blunt Head Injury: Propensity Score Analysis

Background: Studies of trauma systems have identified traumatic brain injury as a frequent cause of death or disability. Due to the heterogeneity of patient presentations, practice variations, and potential for secondary brain injury, the importance of early neurosurgical procedures upon survival remains controversial. Traditional observational outcome studies have been biased because injury severity and clinical prognosis are associated with use of such interventions. Objective: We used propensity analysis to investigate the clinical efficacy of early neurosurgical procedures in patients with traumatic brain injury. Methods: We analyzed a retrospectively identified cohort of 518 consecutive patients (ages 18–65 years) with blunt, traumatic brain injury (head Abbreviated Injury Scale score of ≥ 3) presenting to the emergency department of a Level-1 trauma center. The propensity for a neurosurgical procedure (i.e., craniotomy or ventriculostomy) in the first 24 h was determined (based upon demographic, clinical presentation, head computed tomography scan findings, intracranial pressure monitor use, and injury severity). Multivariate logistic regression models for survival were developed using both the propensity for a neurosurgical procedure and actual performance of the procedure. Results: The odds of in-hospital death were substantially less in those patients who received an early neurosurgical procedure (odds ratio [OR] 0.15; 95% confidence interval [CI] 0.05–0.41). The mortality benefit of early neurosurgical intervention persisted after exclusion of patients who died within the first 24 h (OR 0.13; 95% CI 0.04–0.48). Conclusions: Analysis of observational data after adjustment using the propensity score for a neurosurgical procedure in the first 24 h supports the association of early neurosurgical intervention and patient survival in the setting of significant blunt, traumatic brain injury. Transfer of at-risk head-injured patients to facilities with high-level neurosurgical capabilities seems warranted.     

Prevalence,documentation, and communication of incidental findings in focused assessment with sonography for trauma (FAST) examinations

BackgroundAs the focused assessment with sonography for trauma (FAST) examination becomes increasingly ubiquitous in the emergency department (ED), a parallel increase in incidental findings can also be expected. The purpose of this study was to determine the prevalence, documentation, and communication of incidental findings on emergency physician-performed FAST examinations.MethodsRetrospective review at two academic EDs. Adult trauma patients undergoing FAST examinations used for clinical decision-making at the bedside were identified from an ED ultrasound image archival system. Expert sonologists reviewed ultrasound images for incidental findings, as well as electronic medical records for demographic information, mechanism of injury, type of incidental findings, documentation of incidental findings, and communication of incidental findings to the patient.ResultsA total of 1,452 FAST examinations were reviewed. One hundred and thirty-seven patients with incidental findings were identified (9.4%); 7 patients had an additional incidental finding. Renal cysts were most common (49/144, 34.0%), followed by pelvic cysts in women (32/144, 22.2%). While 31/144 (21.5%) incidental findings were identified and documented in the ultrasound reports or medical records by ED providers, only 6/137 (4.4%) patients were noted to be informed of their incidental findings.ConclusionIncidental findings were often encountered in FAST examinations, with cysts of the kidneys and pelvis being the most common findings. A vast majority of incidental findings were not documented or noted to be communicated to patients, which can be a barrier to follow-up care.     

Thai trauma nurses’ knowledge of neuroprotective nursing care of traumatic brain injury patients: A survey study

Thai trauma nurses play a vital role in neuroprotective nursing care of patients with moderate or severe traumatic brain injury. Nurses' knowledge of the evidence underpinning initial neuroprotective nursing care vital to safe and high‐quality patient care. However, the current state of knowledge of Thai trauma nurses is poorly understood. In this study, we investigated Thai nurses' knowledge of neuroprotective nursing care of patients with moderate or severe traumatic brain injury. Data were collected by a survey, comprising a section on participant characteristics and series of multiple‐choice questions. All registered nurses (n = 22) and nursing assistants (n = 13) from the trauma ward of a regional Thai hospital were invited to participate: the response rate was 100%. Participants had limited knowledge of carbon dioxide monitoring; causes and implications of hypercapnia; mean arterial pressure and cerebral perfusion pressure targets; management of sedatives and analgesics; and management of hyperthermia. Improving their knowledge focusing on knowledge deficits through educational training and implementation of evidence‐based practice is essential to improve the safety and quality of care for Thai patients with moderate or severe traumatic brain injury.     

Cognitive Deficits in Presumed Minor Head-injured Patients

Objective: To determine the frequency of cognitive deficits in ED patients with presumed minor head injury and to identify factors in the initial history and physical examination predictive of cognitive deficits in these patients.
Methods: A prospective clinical study was performed over a nine-month period at a large community-based ED (60,000 patient annual census). Consecutive patients between 16 and 50 years of age who presented to the ED with a history of blunt trauma or a deceleration injury to the head and a Glasgow Coma Scale (GCS) score of 14 or 15 were included. Patients who had previous head injury, mental retardation, or psychiatric problems were excluded. Patients who were admitted to the hospital or who had an abnormal imaging study of the skull or brain also were excluded. Detailed history and physical examination findings were collected using a standardized data form. Cognitive testing was done at one week postinjury (Halstead-Reitan Neuropsychological Test Battery).
Results: Seventy patients were originally entered into the study, and 36 completed the follow-up. Those completing the study were more commonly employed and less likely to have used sensorium-altering drugs or ethanol. Of the 36 patients who completed the study, 42% had either mild or moderate cognitive deficits at one week postinjury. Abnormal cerebellar function during the initial visit was associated with the presence of cognitive deficits at follow-up (p = 0.004). However, only four of 15 (27%; 95% CI 8–55%) patients with a cognitive deficit had an abnormal cerebellar finding.
Conclusion: Many patients with minor head injuries have cognitive deficits one week after injury. History and physical examination features are poor predictors of these deficits. Further studies are needed to evaluate the duration and final outcome of these cognitive deficits.     

Is Closed Diagnostic Peritoneal Lavage Contraindicated in Patients with Previous Abdominal Surgery?

Objective: To compare the accuracies and complication rates of diagnostic peritoneal lavage (DPL) in trauma patients with and without previous abdominal surgery. Methods: A retrospective review of DPL accuracy and complication rate was performed using all ED trauma patients who underwent DPL during 1993 as identified by the trauma registry. Care was provided at a Level-1 trauma center, a 1,100-bed, central-city teaching hospital with an annual ED census of 84,000. Records were reviewed for a history of previous surgery, DPL results, complications, mechanism of injury, and location of abdominal scars. DPL was performed using the Seldinger technique with a standard Arrow Diagnostic Peritoneal Lavage Kit using an 8-Fr catheter. Rates for patient groups with and without previous abdominal surgery were compared using Fisher's exact test. A “misclassified” DPL was defined as either a positive DPL with negative laparotomy or a negative DPL with subsequent need for laparotomy. “Complications” were defined as iatrogenic injury during the procedure or inability to obtain return of fluid during the lavage. Results: A total of 372 DPLs were performed; 42 in patients with previous surgery and 330 in patients without prior surgery. The groups were similar with respect to proportion with blunt trauma (95% vs 97%), positive DPL (19% vs 19%), misclassified rate (2.4% vs 1.8%), and complication rate (2.4% vs 0.9%); no significant difference was found between groups. The previous abdominal surgeries were appendectomy (n = 20), tubal ligation (n = 5), abdominal hysterectomy (n = 4), cholecystectomy (nonlaparoscopic) (n = 4), pyloric stenosis (n = 1), uterine prolapse (n = 1), undescended testis (n = 1), partial gastrectomy (n = 1), and unknown (n = 5). The analysis had a 90% power of detecting a 10% difference between the 2 groups. Conclusion: The complication rate and accuracy of closed DPL in patients with previous abdominal surgery were similar to those for DPL performed in patients without previous abdominal surgery.     

The Potential of Using Billing Data for Emergency Department Injury Surveillance

Objective: To determine the availability of and sample statewide ED injury information obtained from hospital billing data for the purpose of demonstrating the feasibility of information acquisition for subsequent data linkage.
Methods: A retrospective, database investigation was conducted to obtain data describing a statewide stratified sample of ED patients. The aim was to collect a computerized billing summary record for each injured ED patient seen at each sampled hospital over a 1-year period. All 215 Pennsylvania acute care hospitals in 1991 were eligible for sample selection. Data collection for the project was conducted in 1993. Participants included directors of hospital medical records and billing departments.
Results: Twenty-four hospitals contributed data sets from the original target goal of 31 strata. The final combined data set contained 187,404 records with injury diagnoses from approximately 616,000 ED patient visits, representing a 12% sample of all annual statewide ED visits. Age, sex, date of visit, and primary diagnosis fields were completed from the retrieved data >99% of the time. More than two-thirds of the sampled records had a social security number, and total charges were recorded >90% of the time. Other variables such as name and address were contained in <50% of the records submitted. E-codes were usually not available.
Conclusions: Retrospective compilation of multihospital ED billing data to create a statewide ED data sample—with the potential for injury research and probabilistic database linkage—can be accomplished; there are, however, important limitations.     

Weapon Carriage among Major Trauma Victims in the Emergency Department

Objective: To determine the occurrence of weapon carriage by major trauma patients at a university/county hospital ED.
Methods: Retrospective observational study of major trauma patients seen in the ED of a major urban trauma center in Los Angeles from 1979 to 1993. All major trauma patients were searched routinely for weapons by the security police. Cases of violence in the ED caused by these weapons were reviewed.
Results: Over the 14-year period, 26.7% of the victims of major trauma presenting to ED were armed with lethal weapons. The occurrence of automatic weapon seizure increased significantly from an annual rate of only 0.2 in the first five years to an average of 17 over the last five years (p < 0.001). A total of 115 "incidents" of violence involving weapons in the ED were recorded during this period; 1.7% of the weapons brought to the ED led to violence and injury. There were four fatalities of armed and dangerous patients, but only six minor injuries to the staff. No other (unarmed) patient in the ED at the time of these incidents was injured.
Conclusions: ED major trauma patients at one urban trauma center in Los Angeles frequently carry weapons, including automatic military weapons. In addition to violence prevention measures such as weapon confiscation, plans must be made and practiced for the management of violence within the "sacrosanct" hospital doors to protect both patients and ED personnel.     

Trauma systems and timing of patient transfer: are we improving?

Introduction

The regionalization of trauma services is based on the premise that injured persons presenting to nontertiary facilities will be stabilized and rapidly transported to a more definitive center. Although trauma systems seem to improve outcomes for urban patients, this same benefit has not been shown for rural patients. There are many factors associated with the decision to transfer injured patients to a regional trauma center, including referral hospital and patient age, for example. The purpose of this study is to examine factors that influence the timing of transfer of trauma patients and specifically to determine if establishing specific trauma systems has led to any changes in transfer timing over time.

Methods

The trauma registry at the University of Wisconsin was queried for all patients admitted between July 1, 1999, and June 30, 2005. Patients were included in this study if they had been transferred to the university hospital after evaluation at an outside hospital. The registry variables that were abstracted were age, referring hospital, emergency department (ED) time at referring hospital, injury severity score (ISS), the presence of a head injury, performance of a head computed tomography (CT), mode of transport, and the date of ED evaluation.

Results

There were 1656 patients with ISS higher than 9 transferred during the period. The mean ED time was 153 ± 82 minutes. Emergency department time was significantly shorter for those with ISS higher than 25 and for those transported by helicopter. Four hundred ninety-two (30%) patients had a head CT performed at the outside hospital, of which 221 (44%) were repeated at the trauma center. The mean ED time for those in whom a CT was performed was significantly longer than those without CT (179 ± 81 vs 142 ± 84 minutes). The ED times were slightly longer for level III hospitals (158 ± 82 minutes) than for level IV hospitals (137 ± 74 minutes). Emergency department times were longer for older patients. The times in the ED showed an upward, but not statistically significant, trend. After controlling for all other variables, ED times were not significantly different over the period studied.

Conclusion

Development of a statewide trauma system and outreach education has not significantly affected transfer times from nontrauma centers in our system. Outreach educational efforts should focus on systematic trauma evaluation, prompt transfer, and limitation of nontherapeutic testing.