Analysis of chest injuries sustained during the 1999 Marmara earthquake

Purpose: The chest injury pattern after a major earthquake is not well understood because data on the type of trauma and surgical intervention are limited. This study was conducted to analyze patients who sustained chest injury during the Marmara earthquake that struck Turkey on August 17, 1999 registering 7.4 on the Richter scale. Methods: The medical reports of 528 patients transported to a military hospital in the first 48 h after the earthquake were reviewed. Two chest surgeons examined these 528 patients, 19 of whom (4%) had suffered a major chest injury. We retrospectively evaluated the injury pattern, Abbreviated Injury Score (AIS), and Injury Severity Score (ISS) in these 19 patients. Results: Eight patients (42%) had isolated chest injuries and 11 (58%) had suffered injury to more than one organ system, including chest trauma. The mean AIS and ISS were assigned as 2.9 (SD: 1) and 22 (SD: 7), respectively. Three (16%) of the 19 patients died, all of whom had suffered multiple injuries. The mean ISS of these three patients was 28.7 (range 25–34). Chest injury after a major earthquake was associated with an overall mortality rate of 16%, but chest injury with multiple injuries and an ISS over 25 was associated with a mortality rate of 60%. All patients with isolated chest injuries survived. Conclusion: Coexistent trauma with chest injury and an ISS over 25 were defined as poor prognostic factors for patients rescued after a major earthquake. Received: April 16, 2001 / Accepted: March 5, 2002     

Effective use of the air ambulance for pediatric trauma

BACKGROUND: The purpose of this study was to compare outcomes of pediatric trauma patients transported by helicopter from the injury scene (IS group) to a trauma center and those transported by air after hospital stabilization (HS group). METHODS: A retrospective analysis of pediatric trauma patients (<19 years of age) transported by air ambulance and admitted to a pediatric trauma center was conducted. Outcomes compared were mortality and length of stay. Patients were subdivided into minor (Injury Severity Score [ISS] < 15) and major (ISS > 15) trauma. TRISS analysis was performed to verify the overall quality of the care. RESULTS: Eight hundred forty-two HS and 379 IS patients were included. The mean age, median ISS, and distribution of penetrating and blunt injuries did not differ significantly between the groups. The overall death rate was significantly lower for the interfacility transfer patients (HS group, 5.5%; IS group, 8.7%; p < 0.05). Mean intensive care unit (ICU) and hospital length of stay did not differ significantly. HS patients with major trauma had significantly less mortality (HS group, 15.5%; IS group, 26.7%; p < 0.05) and shorter mean ICU stays (HS group, 118.3 hours; IS group, 149.1 hours; p < 0.05) than IS major trauma patients. No differences were seen in patients with minor trauma. TRISS analysis showed improved survival for all patients compared with Major Trauma Outcome Study norms. CONCLUSION: Retrospective analysis was not able to demonstrate any benefit to direct transport from the scene to a trauma center. Hospital stabilization before transfer by air ambulance may improve survival and shorten ICU stays for patients with major trauma.     

Which AIS based scoring system is the best predictor of outcome in orthopaedic blunt trauma patients?

BACKGROUND: Abbreviated Injury Scale (AIS)-based systems-the Injury Severity Score (ISS), New Injury Severity Score (NISS), and AISmax-are used to assess trauma patients. The merits of each in predicting outcome are controversial. METHODS: A large prospective database was used to assess their predictive capacity using receiver operator characteristic curves. RESULTS: In all, 10,062 adult, blunt-trauma patients met the inclusion criteria. All systems were significant outcome predictors for sepsis, multiple organ failure (MOF), length of hospital stay, length of intensive care unit (ICU) admission and mortality (p < 0.0001). NISS was a significantly better predictor than the ISS for mortality (p < 0.0001). NISS was equivalent to the AISmax for mortality prediction and superior in patients with orthopaedic injuries. NISS was significantly better for sepsis, MOF, ICU stay, and total hospital stay (p < 0.0001). CONCLUSIONS: NISS is superior or equivalent to the ISS and AISmax for prediction of all investigated outcomes in a population of blunt trauma patients. As NISS is easier to calculate, its use is recommended to stratify patients for clinical and research purposes.     

Helicopter scene transport of trauma patients with nonlife-threatening injuries: a meta-analysis

BACKGROUND: Helicopters have become a major part of the modern trauma care system and are frequently used to transport patients from the scene of their injury to a trauma center. While early studies reported decreased mortality for trauma patients transported by helicopters when compared with those transported by ground ambulances, more recent research has questioned the benefit of helicopter transport of trauma patients. The purpose of this study was to determine the percentage of patients transported by helicopter who have nonlife-threatening injuries. METHODS: A meta-analysis was performed on peer-review research on helicopter utilization. The inclusion criteria were all studies that evaluated trauma patients transported by helicopter from the scene of their injury to a trauma center with baseline parameters defined by Injury Severity Score (ISS), Trauma Score (TS), Revised Trauma Score (RTS), and the likelihood of survival as determined via Trauma Score-Injury Severity Score (TRISS) methodology. RESULTS: There were 22 studies comprising 37,350 patients that met the inclusion criteria. According to the ISS, 60.0% [99% confidence interval (CI): 54.5-64.8] of patients had minor injuries, According to the TS, 61.4% (99% CI: 60.8-62.0) of patients had minor injuries. According to TRISS methodology, 69.3% (99% CI: 58.5-80.2) of patients had a greater than 90% chance of survival and thus nonlife-threatening injuries. There were 25.8% (99% CI: -1.0-52.6) of patients discharged within 24 hours after arrival at the trauma center. CONCLUSIONS: The majority of trauma patients transported from the scene by helicopter have nonlife-threatening injuries. Efforts to more accurately identify those patients who would benefit most from helicopter transport from the accident scene to the trauma center are needed to reduce helicopter overutilization.     

Direct transport versus inter hospital transfer of severely injured trauma patients

IntroductionSeveral studies have suggested that severely injured patients should be transported directly to a trauma centre bypassing the nearest hospital. However, the evidence remains inconclusive. The purpose of this study was to examine the benefits in terms of mortality of direct transport to a trauma centre versus primary treatment in a level II or III centre followed by inter hospital transfer to a trauma centre for severely injured patients without Traumatic Brain Injury (TBI).Patients and methodsWe used the regional trauma registry and included all patients with an Injury Severity Score (ISS) >15 and an Abbreviated Injury Score <4 for head injury. We adjusted for survival bias by including “potential transfers”: patients who died at the nearest hospitals before transportation to a trauma centre.ResultsA total of 439 patients was included. The majority of patients (349/439, 79%) was transported directly to the level I trauma centre (direct group). The transferred group was formed by the remaining 90 patients, of whom 81 were transferred to the level I trauma centre after initial stabilisation elsewhere and 9 patients died in the emergency room before transfer to a level 1 trauma centre could occur. There were no significant differences in baseline and injury characteristics between the groups. Overall, 60 patients died in-hospital including 41 of the 349 patients (12%) in the direct group and 19 of the 90 patients (21%) in the transferred group. Nine of the 19 deaths in the transferred group were ascribed to potential transfers. After adjusting for prehospital Revised Trauma Score (RTS) and ISS, the odds ratio of death was 2.40 (95%CI: 1.07–5.40) for patients in the transfer group. When potential transfer patients were excluded from the analysis, the adjusted odds ratio of death was 1.14 (95%CI: 0.43–3.01).ConclusionsAfter adjusting for survivor bias by including potential transfers, the results of this study suggest a lower risk of death for patients who are directly transported to a level I trauma centre than for patients who receive primary treatment in a level II or III centre and are transferred to a trauma centre. However, this finding was only significant when adjusting for survival bias and therefore we conclude that it is still uncertain if there is a lower risk of death for patients who are transported directly to a level I trauma centre.     

Penetrating trauma in patients older than 55 years: a case-control study

BACKGROUND: Multiple studies have compared young and elderly blunt trauma patients, and concluded that, because elderly patients have outcomes similar to young patients, aggressive resuscitation should be offered regardless of age. Similar data on penetrating trauma patients are limited. STUDY DESIGN: In a retrospective review, 79 patients with penetrating injuries and age > or =55 were blindly matched for Injury Severity Score (ISS) and Abbreviated Injury Scores (AIS) with 79 penetrating trauma patients aged 15-35 years, who were admitted to the hospital over the same 4 year period (June 1994-June 1998). Mortality rates and length of stay in the intensive care unit (ICU) and the hospital were compared between the two groups. RESULTS: The average ISS for all patients was 12 (range 1-75) and identical for both groups. Both groups had similar injuries and were evaluated by an equal number and type of diagnostic studies. The mean ISS was not different between severely injured older and younger patients who required ICU admission or died. Among 32 nonsurvivors (18 older and 14 younger), older patients were more likely than younger patients to present with normal vital signs, although the comparison did not reach statistical significance (50% vs. 13%, P=0.25). There was a clinically significant trend for longer ICU (15+/-30 vs. 3+/-2 days, P=0.096) and hospital stay (10+/-18 vs. 6+/-8 days, P=0.08) among older patients, but mortality rates were similar (23% in older vs. 18% in younger, P=NS). Furthermore, these outcome parameters showed no difference when both groups were classified according to severity of injury or physiologic response. CONCLUSIONS: Following penetrating trauma, older patients arriving alive and admitted to the hospital are as likely to survive as younger patients who have injuries of similar severity, but at the expense of longer ICU and hospital stays.     

Early surgery for thoracolumbar spine injuries decreases complications

BACKGROUND: The proper timing for surgical fracture repair is controversial. Early repair of long bone and cervical fractures reduces complications and is safe. Few studies exist to compare time to surgery with outcomes in thoracolumbar (TL) spine injuries. METHODS: Patients with TL spine injuries were identified from the trauma registry and divided into two cohorts on the basis of Injury Severity Score (ISS). Cohorts were compared for infectious, respiratory, and total complications in patients who had early (<72 hours from injury) versus late (>72 hours from injury) surgical repair. A retrospective chart review was performed on High ISS patients (> or =15) to identify differences in resuscitation needs and neurologic, respiratory, and infectious complications. RESULTS: Early surgery, Low ISS patients were younger, received fewer anterior repairs, and had shorter hospitalizations. Early patients in the High ISS cohort had significantly fewer total complications and shorter hospital and intensive care unit lengths of stay. Resuscitative requirements were similar for both surgery groups. More late surgery patients required ventilator support for noninfectious reasons. There was no difference in admission or postoperative neurologic status or the incidence of head injury. CONCLUSION: Early surgery in severely injured patients with thoracolumbar spine trauma was associated with fewer complications and shorter hospital and intensive care unit lengths of stay, required less ventilator support for noninfectious reasons, and did not increase neurologic deficits.     

Study of the outcome of patients transferred to a level I hospital after stabilization at an outlying hospital in a rural setting

OBJECTIVE: To determine the characteristics and outcome of transferred trauma patients in a rural setting. METHODS: We conducted a case-control study of all trauma admissions to a rural Level I trauma center to examine a 3.5-year (1993-1996) comparison of trauma patients admitted directly with those transferred (RTTP) after being initially stabilized at an outlying hospital. We used prehospital times, Injury Severity Score (ISS), LD50ISS (the ISS at which 50% of patients died), Revised Trauma Score, probability of survival, Acute Physiology and Chronic Health Evaluation II, and observed survival as main outcome measures. RESULTS: RTTPs (39.4%) spent an average of 182+/-139 minutes at the outlying hospital and 72+/-42 minutes in transport to the trauma center. Proportionately more head/neck and patients with multiple injuries composed the RTTP group. The RTTP were more severely injured (ISS 11.1+/-8.5; Acute Physiology and Chronic Health Evaluation II 16.2+/-5.8; Revised Trauma Score 7.44+/-1.1) than the trauma patients admitted directly (ISS 7.9+/-5.3; Acute Physiology and Chronic Health Evaluation II 13.1+/-6.3; Revised Trauma Score 7.8+/-0.4; p < 0.05). However, both groups had the same LD50ISS (ISS = 35). When logistic regression was applied with death as the dependent variable, both ISS and age contributed significantly (p = 0.0001) but transfer status did not (p = 0.473). CONCLUSION: Rural trauma centers admit a high percentage of RTTP. These RTTP have a higher injury severity and acuity than their trauma patients admitted directly counterparts. Trauma care in rural areas that involves initial stabilization at outlying hospitals does not adversely affect mortality.     

The impact of multiple casualty incidents on clinical outcomes

BACKGROUND: Multiple casualty incidents (MCI) highlight discrepancies between patient needs and available resources. It is generally thought that heavy patient loads adversely affect trauma health care delivery. The purpose of this study was to identify the impact of multiple casualty situations on the clinical outcomes of injured patients. METHODS: All severely injured trauma patients (Injury Severity Score [ISS] > or = 12) who presented during a 12-month period to a regional trauma center were retrospectively reviewed. MCIs were defined as treating and admitting three or more trauma patients within a maximum of 3 hours. This cohort was compared with all other patients who did not meet MCI criteria. RESULTS: Ten percent (88/861) of all trauma patients were treated in an MCI setting. Groups did not vary among sex, age, ISS, or mechanism of injury (p > 0.05). MCI patients displayed a greater length of hospital stay, time to first surgical procedure, time to emergency laparotomy, and time spent in the emergency room (p < 0.05). MCI and non-MCI patients did not differ in ICU length of stay, postadmission morbidity, or mortality (p > 0.05). CONCLUSION: The impact of a MCI on the quality of trauma care has not been previously defined. MCI events delay definitive care and prolong a patient's length of stay. This is particularly concerning in the emergency department where a trauma center's ability to treat MCI patients effectively via an increased surge capacity relies on swift patient triage and flow. We are now investigating these issues in other trauma centers.     

System compliance with out-of-hospital trauma triage criteria

BACKGROUND: Emergency Medical Services (EMS) providers are the initial link to a trauma care system. Previous studies have demonstrated poor compliance with trauma triage by EMS personnel. We sought to determine the proportion of adult EMS cases within a large state meeting Trauma Triage Criteria (TTC) who are ultimately cared for in trauma centers. METHODS: Merged EMS and hospital discharge records for 1996 were examined. All adult acute trauma cases were included. Single-system burns and late effects of injury were excluded. RESULTS: Nine thousand one hundred seventy-four adult cases had at least one TTC, and 60.1% of these patients were transported to a non-trauma center (NTC) and 74.6% of cases with an Injury Severity Score > 15 and one TTC were taken to trauma centers. Analyzing two large urban counties, 58.2% and 27.0% of all TTC cases were still taken to NTC hospitals. CONCLUSION: A significant proportion of seriously injured patients meeting TTC were transported by EMS personnel to NTCs.     

Air versus ground transport of major trauma patients to a tertiary trauma centre: a province-wide comparison using TRISS analysis

OBJECTIVE: The purpose of this study was to compare the outcomes of adult (aged > 15 yr) blunt trauma patients with an Injury Severity Score (ISS) = 12 who were transported to a single tertiary trauma centre (TTC) by helicopter emergency medical service (HEMS) versus those transported by ground ambulance. METHODS: We retrospectively analyzed all adult (aged > 15 yr) trauma patients between March 27, 1998 and March 28, 2002 with an ISS score = 12, as identified through the provincial trauma registry. We used the Trauma and Injury Severity Score (TRISS) methodology to determine a difference in outcomes between the 2 groups. RESULTS: We identified 823 patients; of these, we excluded 32 (3.9%) penetrating trauma patients. Of the blunt trauma cases (n = 791) 237 (30%) patients were transported by air and 554 were transported by ground (70%). A total of 770 (97.3%) patients were eligible for TRISS analysis. Using the TRISS methodology, the air group had a Z statistic of 2.77, yielding a W score of 6.40. This compared with the ground transport group, whose Z statistic was 1.97 and W score was 2.39. CONCLUSION: The transport of trauma patients with an ISS = 12 by a provincially dedicated rotor wing air medical service was associated with statistically significantly better outcomes than those transported by standard ground ambulance. This is the first large Canadian study to specifically compare the outcome of patients transported by ground with those transported by air.     

Helicopter transport of pediatric trauma patients in an urban emergency medical services system: a critical analysis

BACKGROUND: Helicopter transport of pediatric trauma patients in an urban Emergency Medical Services system remains controversial. METHODS: A retrospective review of pediatric patients transported by helicopter to a pediatric trauma center in Los Angeles, California, was conducted over a 3-year period. Pediatric patients (age < 15 years) are transported by helicopter if ground transport to a pediatric trauma center would exceed 20 minutes. Emergency Medical Services reports and hospital records were reviewed for key prehospital and outcome indicators. RESULTS: One hundred eighty-nine patients met the study inclusion criteria. The median age was 5 years (range, 0-14 years). The most common mechanisms of injury were falls and automobile versus pedestrian crashes. Eighty-two percent of patients had a Revised Trauma Score > 7. Of the 175 (93%) patients whose hospital records were available, 24 (14%) were intubated in the emergency department, 32 (18%) were admitted to the intensive care unit, and 7 (4%) were taken directly to the operating room. Injury Severity Scores (ISSs) were as follows: ISS 0 to 15, 146 (83%); ISS 16 to 30, 26 (15%); and ISS > 30, 3 (2%). Fifty-seven (33%) patients were discharged home from the emergency department. CONCLUSION: The majority of pediatric trauma patients transported by helicopter in our study sustained minor injuries. A revised policy to better identify pediatric patients who might benefit from helicopter transport appears to be warranted.     

Prognosis of penetrating trauma in elderly patients: a comparison with younger patients

BACKGROUND: It has previously been shown that elderly patients have a worse prognosis than their younger counterparts after sustaining blunt trauma. This is due in part to a higher incidence of comorbid conditions as well as less physiologic reserve in an elderly population sustaining largely blunt trauma. We compared the outcome after penetrating trauma in elderly patients to matched "younger" patients to determine whether they had a similarly poor prognosis. METHODS: Elderly patients (> or = 65 years) were identified from our trauma registry. Sex, mechanism of injury, and Abbreviated Injury Score/Injury Severity Score were determined from the registry. Patients presenting with traumatic arrest were excluded. The registry was then searched for patients aged 15 to 40 years with the same sex, mechanism of injury, and Abbreviated Injury Score in each region. A chart review was then performed to determine additional details of their hospital stay. The two groups were then compared using Student's t test and Fisher's exact chi2 test, as appropriate. RESULTS: Eighty-five elderly patients (OLD group) were admitted with penetrating trauma between 1983 and 1998. They were compared with 85 matched young patients (YOUNG group). Each group included 66 male and 19 female patients. In each group, gunshot wounds occurred in 45.9%, stab wounds in 52.9%, and shotgun wounds in 1.2% of patients. The average Injury Severity Score in each group was 5.5 +/- 5.6 (range, 1-29) and the regional Abbreviated Injury Scores were likewise equal in both groups. The OLD patients had an average hospital stay of 6.9 +/- 9.1 days compared with 4.3 +/- 5.7 days in the YOUNG patients (p < 0.05). Twenty-seven OLD patients spent 7.3 +/- 9.2 days in the intensive care unit compared with 19 YOUNG patients who stayed 3.4 +/- 3.2 days (p < .05). A total of 91 comorbidities were identified in 58 OLD patients compared with 18 in 15 YOUNG patients (p < .0001). Eighty-six invasive procedures were performed in the OLD group compared with 96 in the YOUNG group (p = not significant). Nineteen OLD patients (22.3%) and 15 YOUNG patients (17.6%) suffered one or more complications, including death (p = not significant). A total of 91% of surviving OLD patients were discharged to home compared with 100% of surviving YOUNG patients (p < .01). CONCLUSION: Elderly patients who sustain penetrating trauma have more comorbidities than their younger counterparts. This may account for their longer hospital stay and lesser ability to be discharged home. These patients do not have an increased complication rate and should continue to be managed aggressively.     

Popliteal artery trauma in a rural level I trauma center

Popliteal vascular trauma has historically been an urban phenomenon. We hypothesized that rural popliteal artery injury would result more often from blunt mechanisms of injury (MOI), have a longer time to operation, and result in a higher amputation rate. We retrospectively reviewed all cases of popliteal artery injury from December 1994 to May 2001 at our rural trauma center. Age, gender, Injury Severity Score (ISS), MOI, scene transport versus transfer from a referring hospital, time to operation, and operative times were studied. Significance was determined by Student's t test with a P value < or = 0.05. Thirty-two popliteal artery injuries were found. Blunt trauma accounted for 50 per cent of the injuries. Eighty-eight per cent of the patients were transferred from a referring hospital. Patients transported directly from the scene had a higher ISS. Longer operative times translated into an increased need for fasciotomy. The amputation rate was 19 per cent. This is the first attempt to delineate the specific nature of rural popliteal artery trauma. The amputation rate was not different between the two different MOI and was independent of the time to operation. Of those patients receiving an amputation 83 per cent were transferred from another hospital and despite a statistically lower ISS still required an amputation.     

Early versus delayed stabilization of pediatric femur fractures: analysis of 387 patients.

OBJECTIVES: To assess the effect of timing of femur fracture stabilization on pulmonary complication rates in pediatric trauma patients. DESIGN: Retrospective review. SETTING: Level I trauma center. PATIENTS: Three hundred eighty-seven previously healthy patients from zero to fifteen years of age with traumatic diaphyseal femur fractures. INTERVENTION: Femur fracture stabilization: early (less than twenty-four hours after injury) in 213 patients and late in 174 patients. MAIN OUTCOME MEASUREMENTS: Age, sex, GCS (Glasgow Coma Score), AIS/ISS (Abbreviated Injury Score/Injury Severity Score), timing of fracture stabilization, duration of mechanical ventilation, intensive care unit stay, and hospital stay were recorded. Pulmonary complications, including pneumonia, respiratory distress syndrome, and pulmonary embolus, were recorded. RESULTS: Thirteen patients developed pulmonary complications. Twelve of these had severe head injuries (GCS < or = 8). One had sustained an upper cervical spine fracture that resulted in quadriplegia. Statistical analysis revealed GCS, GCS < or = 8, ISS, and head and neck AIS to be significant predictors of pulmonary complications. Early stabilization of femur fractures had no apparent effect on the pulmonary complication rate. CONCLUSIONS: Pulmonary complications are rare in pediatric femur fracture patients. Patients with severe head injuries (GCS < or = 8) or cervical spinal cord injuries are at high risk for pulmonary complications. The timing of femur fracture stabilization does not appear to affect the prevalence of pulmonary complications in these patients.     

The impact of hyperglycemia on patients with severe brain injury

BACKGROUND: This study aimed to analyze the relation of hyperglycemia to outcome in cases of severe traumatic brain injury, and to examine factors that may be responsible for the hyperglycemic state. METHODS: A retrospective analysis in an intensive care unit of a level 1 trauma center investigated 77 patients with severe traumatic brain injury. Patients with a Glasgow Coma Scale (GCS) of 8 or lower who survived more than 5 days were reviewed. Serum glucose, base deficit, GCS, use of steroids, and amounts of insulin and carbohydrates were recorded for 5 days, along with age. The Injury Severity Score (ISS) and the Abbreviated Injury Score (AIS) for the head, chest, and abdomen also were recorded. A hyperglycemia score (HS) was calculated as follows. A value of 1 was assigned each day the glucose exceeded 170 mg/dL (range, 0-5). A hyperglycemia score for days 3, 4, and 5 (HS day 3-5) also was calculated (range, 0-3). Outcomes included mortality, day 5 GCS, intensive care unit length of stay, and hospital length of stay. RESULTS: Of the 77 patients, 24 (31.2%) died. Nonsurvivors had higher glucose levels each day. The HS was higher for those who died: 2.4 +/- 1.7 versus 1.5 +/- 1.4 (p = 0.02). Univariate analysis showed that only HS and ISS correlated with all four outcome variables studied. Cox's regression analysis showed that mortality was related to age and ISS. Head AIS and HS were independent predictors of lower day 5 GCS, whereas HS 3-5 and day 4 GCS were related to prolonged hospital length of stay. Older age, diabetes, and lower day 1 GCS were associated with higher HS, whereas carbohydrate infusion rate, ISS, head AIS, and steroid administration were not. CONCLUSIONS: Early hyperglycemia is associated with poor outcomes for patients with severe traumatic brain injury. Tighter control of serum glucose without reduction of nutritional support may improve the prognosis for these critically ill patients.     

Elderly trauma patients with rib fractures are at greater risk of death and pneumonia

BACKGROUND: The purpose of this study was to show that elderly patients admitted with rib fractures after blunt trauma have increased mortality. METHODS: Demographic, injury severity, and outcome data on a cohort of consecutive adult trauma admissions with rib fractures to a tertiary care trauma center from April 1, 1993, to March 31, 2000, were extracted from our trauma registry. RESULTS: Among 4,325 blunt trauma admissions, there were 405 (9.4%) patients with rib fractures; 113 were aged > or = 65. Injuries were severe, with Injury Severity Score (ISS) > or = 16 in 54.8% of cases, a mean hospital stay of 26.8 +/- 43.7 days, and 28.6% of patients requiring mechanical ventilation. Mortality (19.5% vs. 9.3%; p < 0.05), presence of comorbidity (61.1% vs. 8.6%; p < 0.0001), and falls (14.6% vs. 0.7%; p < 0.0001) were significantly higher in patients aged > or = 65 despite significantly lower ISS (p = 0.031), higher Glasgow Coma Scale score (p = 0.0003), and higher Revised Trauma Score (p < 0.0001). After adjusting for severity (i.e., ISS and Revised Trauma Score), comorbidity, and multiple rib fractures, patients aged > or = 65 had five times the odds of dying when compared with those < 65 years old. CONCLUSION: Despite lower indices of injury severity, even after taking account of comorbidities, mortality was significantly increased in elderly patients admitted to a trauma center with rib fractures.     

Prevalence of chest trauma, associated injuries and mortality: a level I trauma centre experience

A review of prospectively collected data in our trauma unit for the years 1998–2003 was undertaken. Adult patients who suffered multiple trauma with an Injury Severity Score (ISS) of ≥16, admitted to hospital for more than 72 hours and with sustained blunt chest injuries were included in the study. Demographic details including pre-hospital care, trauma history, admission vital signs, blood transfusions, details of injuries and their abbreviated injury scores (AIS), operations, length of intensive care unit and hospital stays, Injury Severity Score (ISS) and mortality were analysed. Fulfilling the inclusion criteria with at least one chest injury were 1,164 patients. The overall mortality reached 18.7%. As expected, patients in the higher AIS groups had both a higher overall ISS and mortality rate with one significant exception; patients with minor chest injuries (AIS_chest = 1) were associated with mortality comparable to injuries involving an AIS_chest = 3. Additionally, the vast majority of polytraumatised patients with an AIS_chest = 1 died in ICU sooner than patients of groups 2–5.     

Preexisting conditions and mortality in older trauma patients

BACKGROUND: Among older trauma patients, those with preexisting chronic medical conditions (CMCs) appear to have an elevated risk of death. Whether this association is dependent on the severity of injury or other occult factors remains unanswered. This study evaluated the association between preexisting CMCs and risk of death among older trauma patients according to injury severity. METHODS: This was a retrospective cohort study using data from the National Trauma Data Bank, a registry of trauma patients admitted to 131 trauma centers across the United States. The main outcome measure was in-hospital mortality. RESULTS: In patients 50 to 64 years of age who sustain severe (Injury Severity Score [ISS] of 26+) and moderate injuries (ISS of 16-25), the presence of one or more CMCs is not associated with an increased relative risk (RR) of death (RR, 0.80 and 95% confidence interval [CI], 0.71-0.90; RR, 1.09 and 95% CI, 0.95-1.24, respectively). Those with minor injuries (ISS < 16) have increased risk of death (RR, 2.80; 95% CI, 2.33-3.36). For those patients 65 years of age and older who sustain severe, moderate, and minor injuries, the pattern of results is similar (RR, 0.91 and 95% CI, 0.83-1.00; RR, 1.13 and 95% CI, 1.04-1.23; and RR, 1.88 and 95% CI, 1.73-2.05, respectively). CONCLUSION: Older trauma patients with CMCs who present with minor injuries should be considered to have an increased risk of death when compared with their nonchronically ill counterparts.