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The purpose of auditing trauma care is to maintain quality assurance and to guide quality improvement. This study was conducted to identify the incidence, type, and setting of errors leading to morbidity and mortality in trauma patients. Determinations of the Medical Audit Committee of San Diego County were reviewed and classified by the authors for identification of preventable errors leading to morbidity or mortality. Errors were classified by type and categorized by phase of care. Errors were identified in the cases of 4% of all patients admitted for trauma care over a 4-year period. Of all trauma patient deaths, 5.9% were considered preventable or potentially preventable. The most common single error across all phases of care was failure to appropriately evaluate the abdomen. Although errors in the resuscitative and operative phases were more common, critical care errors had the greatest impact on preventable death. The detected error rate of 4% may represent the baseline error rate in a trauma system. While regionalized trauma care has dramatically reduced the incidence of preventable death after injury, efforts to further reduce preventable morbidity and mortality may be guided by an identification of common errors in a trauma system and their relationship to outcome.

To assess the need for a trauma system in San Diego County, a concurrent audit of trauma care was performed by an independent consultant in 1982. During the study period from 15 March through 15 June 1982, 591 consecutive major trauma victims (MTV) were collected by the 30 participating hospitals. All medical records, including autopsy reports, were audited for the timeliness and appropriateness of diagnosis and definitive care. Deaths were classified as being not preventable, potentially salvageable, or preventable. A trauma system subsequently became functional on 1 August 1984, with five adult centers and one pediatric center. A Medical Audit Committee composed of physicians and nurses from designated and nondesignated hospitals was organized to perform a monthly concurrent audit of trauma care. Between 1 August and 31 December 1984, 1,366 MTV were triaged to trauma centers. The care of MTV was considered suboptimal in 32% of patients before regionalization, compared to 4.2% after regionalization (p less than 0.01). Preventable deaths occurred in 13.6% of fatalities occurring before implementation of a trauma system, compared to 2.7% after implementation (p less than 0.01). Regionalization of trauma care significantly reduced delays, inadequate care, and preventable deaths due to trauma.

A multidisciplinary concurrent audit of the quality of medical care within a trauma system was carried out by a committee of physicians, nurses, and health officials representing trauma centers, nontrauma hospitals, and the public agency administrating the trauma system. Care was audited with regard to timeliness and appropriateness of diagnosis and therapy. Complications were classified as being due to an error in diagnosis, judgment, or technique. Deaths were classified as nonpreventable, potentially salvageable, or frankly preventable. During the first 22 months of operation (1 August 1984-30 May 1986), 7,936 cases were audited. Of the 224 deaths occurring at nontrauma hospitals, 17 (7.6%) were felt to be frankly preventable. Of 541 deaths occurring at trauma centers, 11 (2.0%) were felt to be frankly preventable (p less than 0.001). The most common problem implicated in preventable deaths at nontrauma center hospitals was an error in diagnosis. Preventable deaths at trauma centers were most commonly due to an error in technique. Complications or protocol violations occurred in 595 of 6,564 surviving trauma patients (9.1%). During the first 12 months of system operation, 7,200 person-hours were required to perform the audit. Personnel costs alone for audit in the first year were $300,420.