Injury patterns and outcomes associated with elderly trauma victims in Kingston, Ontario
- PMID: 18053371
- PMCID: PMC2386230
Injury patterns and outcomes associated with elderly trauma victims in Kingston, Ontario
Abstract
Objective: To characterize the common injuries incurred by elderly trauma victims and to identify the most frequent complications and outcomes.
Methods: We undertook a retrospective descriptive chart review of 125 consecutive patients who were over age 65 years and who were admitted to an academic hospital in Kingston, Ontario, over a 3-year period with an injury severity score (ISS) > 12. Complete data about the mechanism of injury (MOI), age, date, sex, specific injury, principal and secondary diagnoses, comorbid conditions, intensive care unit (ICU) and hospital length of stay and discharge disposition were recorded for 99 of these patients.
Results: Elderly trauma cases accounted for 125 of the total 460 trauma admissions over 3 years. For that same period, more than 50% of trauma deaths occurred among elderly patients, of whom 65 were men and 34 were women. Their mean age was 77 (standard deviation [SD] 6) years, with an age range of 66-95 years. The average ISS score was 23 (SD 13), with a range of 12-75. MOI included falls (64%), motor vehicle collision (27%), injury from machinery (3%), injury from natural and environmental causes (2%), suicide or self-inflicted injury (3%) and burns (1%). The mean length of stay was 14.6 days, but this ranged from 1 to 111 days. Of the 99 patients, 14 were admitted to the ICU for a total of 37 days, and 9 of these died. Of the total of 67 (67%) patients who were discharged from hospital, 46% were discharged home and 32% died. Falls accounted for the most frequent MOI, followed by motor vehicle collisions. The most common injury in the falls group was subdural hematoma, whereas fractures were the most common injuries in the motor vehicle collision group. The most frequent complications included urinary tract infections and aspiration pneumonias. Neither age nor MOI was correlated with injury severity. Increasing age and injury severity were predictors for complications and mortality while in hospital.
Conclusions: Despite severe injuries, most elderly patients can survive traumatic injuries. The data suggest that, although elderly patients are prone to incur complications and have greater risk of dying as a result of their injuries, most of these patients will survive their traumatic accidents. The data also show that nosocomial complications play a significant role in the risk of mortality in elderly trauma victims.
Objectif: Caractériser les traumatismes souvent subis par les personnes âgées et déterminer leurs complications et leur issue les plus fréquentes.
Méthodes: Étude descriptive rétrospective des dossiers de 125 patients consécutifs de 65 ans ou plus admis dans un hôpital universitaire à Kingston (Ont.), au cours d'une période de trois ans, et dont l'indice de gravité de la blessure (IGB) dépassait 12. On a consigné pour 99 de ces patients des données complètes sur le facteur mécanique traumatisant (FMT), l'âge, la date, le sexe, le traumatisme précis, les diagnostics principal et secondaire, les affections comorbides, la durée du séjour aux soins intensifs (SI) et à l'hôpital et l'issue au moment du congé.
Résultats: Parmi les 460 traumatisés admis en trois ans, il y avait 125 personnes âgées. Au cours de la même période, plus de 50 % des décès de traumatisés sont survenus chez les patients âgés, qui comptaient 65 hommes et 34 femmes. Les patients avaient en moyenne 77 (écart-type [ET] 6) ans, pour une plage de 66 à 95 ans. L'IGB moyen s'établissait à 23 (ET 13), pour une plage de 12 à 75. Les facteurs mécaniques traumatisants comprenaient les chutes (64 %), les accidents de la circulation (27 %), les traumatismes causés par des machines (3 %), les traumatismes attribuables à des causes naturelles et environnementales (2 %), les suicides ou traumatismes auto-infligés (3 %) et les brûlures (1 %). La durée moyenne du séjour s'établissait à 14,6 jours mais elle a varié de 1 à 111 jours. Des 99 patients, 14 ont été admis aux SI, pour un total de 37 jours, et 9 sont décédés. Des 67 (67 %) patients qui ont quitté l'hôpital, 46 % sont retournés à la maison et 32 % sont décédés. Les chutes ont constitué le facteur mécanique traumatisant le plus fréquent, suivies des accidents de la circulation. L'hématome sous-dural a constitué le traumatisme le plus fréquent chez les victimes de chutes, tandis que les victimes d'accidents de la circulation ont subi surtout des fractures. Les infections urinaires et les pneumonies d'aspiration constituaient les complications les plus fréquentes. On n'a pas établi de lien entre l'âge ou le facteur mécanique traumatisant et la gravité du traumatisme. L'âge croissant et la gravité du traumatisme étaient des prédicteurs de complications et de mortalité pendant le séjour à l'hôpital.
Conclusions: En dépit de blessures graves, la plupart des patients âgés peuvent survivre à des traumatismes. Les données indiquent que même si les patients âgés sont fragiles aux complications et risquent davantage de mourir des suites de leurs blessures, la plupart survivront au traumatisme. Les données montrent aussi que les complications nosocomiales jouent un rôle important dans le risque de mortalité chez les personnes âgées victimes d'un traumatisme.
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