Emergency thoracotomy in thoracic trauma-a review

Thoracic trauma is one of the leading causes of death in all age groups and accounts for 25-50% of all traumatic injuries. While the majority of patients with thoracic trauma can be managed conservatively, a small but significant number requires emergency thoracotomy as part of their initial resuscitation. The procedure has been advocated for evacuation of pericardial tamponade, direct control of intrathoracic haemorrhage, control of massive air-embolism, open cardiac massage and cross-clamping of the descending aorta. Emergency thoracotomy can be defined as thoracotomy "occurring either immediately at the site of injury, or in the emergency department or operating room as an integral part of the initial resuscitation process". Following emergency thoracotomy, the overall survival rates for penetrating thoracic trauma are around 9-12% but have been reported to be as high as 38%. The survival rate for blunt trauma is approximately 1-2%. The decision to perform emergency thoracotomy involves careful evaluation of the scientific, ethical, social and economic issues. This article aims to provide a review of the current literature and to outline the pathophysiological features, technical manoeuvres and selective indications for emergency thoracotomy as a component of the initial resuscitation of trauma victims with thoracic injury.     

Urgent thoracotomy for penetrating chest trauma: analysis of 158 patients of a single center

Background

Penetrating injuries to the chest present a frequent and challenging problem, but the majority of these injuries can be managed non-\operatively. The aim of this study was to describe the incidence of penetrating chest trauma and the ultimate techniques used for operative management, as well as the diagnosis, complications, morbidity and mortality.

Methods

A retrospective 9-year review of patients who underwent an operative procedure following penetrating chest trauma was performed. The mechanism of injury, gender, age, physiological and outcome parameters, including injury severity score (ISS), chest abbreviated injury scale (AIS) score, lung injury scale score, concomitant injuries, time from admission to operating room, transfusion requirement, indications for thoracotomy, intra-operative findings, operative procedures, length of hospital stay (LOS) and rate of mortality were recorded.

Results

A total of 1123 patients who were admitted with penetrating thoracic trauma were investigated. Of these, 158 patients (93 stabbings, 65 gunshots) underwent a thoracotomy within 24 h after the penetrating trauma. There were 146 (92.4%) male and 12 (7.6%) female patients, and their mean age was 25.72 ± 9.33 (range, 15-54) years. The mean LOS was 10.65 ± 8.30 (range, 5-65) days. Patients admitted after a gunshot had a significantly longer LOS than those admitted with a stab wound (gunshot, 13.53 ± 9.92 days; stab wound, 8.76 ± 6.42 days, p < 0.001). Patients who died had a significantly lower systolic blood pressure (SBP) on presentation in the emergency room (42.94 ± 36.702 mm Hg) compared with those who survived (83.96 ± 27.842 mm Hg, p = 0.001). The overall mortality rate was 10.8% (n = 17). Mortality for patients with stab wounds was 8/93 (8.6%) compared with 9/65 (13.8%) for patients with gunshot wounds (p = 0.29). Concomitant abdominal injuries (p = 0.01), diaphragmatic injury (p = 0.01), ISS (p = 0.001), chest AIS score (p < 0.05), ongoing output (p = 0.001), blood transfusion volume (p < 0.01) and SBP (p = 0.001) were associated with mortality.

Conclusion

Penetrating injuries to the chest requiring a thoracotomy are uncommon, and lung-sparing techniques have become the most frequently used procedures for lung injuries. The presence of associated abdominal injuries increased the mortality five-fold. Factors that affected mortality were ISS, chest AIS score, SBP, ongoing chest output, blood transfusion volume, diaphragmatic injury and associated abdominal injury.     

Emergency room thoracotomy for acute traumatic cardiac tamponade caused by a blunt cardiac injury: A case report

IntroductionTraumatic blunt cardiac injuries have a high mortality rate, and prompt diagnosis and treatment can be lifesaving in cardiac tamponade.Presentation of caseA 62-year-old man was transferred to the emergency department after a motor vehicle accident. He was hemodynamically unstable. A focused assessment with sonography in trauma (FAST) showed pericardial fluid with right ventricular collapse consistent with cardiac tamponade in the subxiphoid view. He collapsed despite a subxiphoid pericardiotomy. Owing to the ongoing hemodynamic instability, we performed a left anterolateral thoracotomy. Direct incision of the pericardium showed blood and clots within the pericardial space, indicating hemopericardium. The heart stroke and hemodynamic status recovered on removing the clot.DiscussionAlthough the physical findings of cardiac tamponade are not always apparent in life-threatening acute cardiac tamponade after blunt trauma, FAST is a reliable tool for diagnosing and following cardiac tamponade. A median sternotomy is a standard approach for evaluating cardiac injury in hemodynamically stable patients with or without cardiopulmonary bypass. However, a left anterior thoracotomy was the fastest, simplest life-saving procedure considering the need for open-chest cardiac massage given our patient’s life-threatening condition.ConclusionA prompt diagnosis using FAST and treatment can be lifesaving in traumatic acute cardiac tamponade. A pericardiotomy via a thoracotomy is mandatory for lifesaving cardiac decompression in acute traumatic cardiac tamponade in cases of ineffective drainage due to clot formation within the pericardial space.     

Resuscitative emergency thoracotomy in a Scandinavian trauma hospital--is it justified?

OBJECTIVE: Resuscitative emergency thoracotomy (ET) is of value in selected (penetrating) trauma patients. Current survival-estimates and recommended guidelines are based on data from the United States. However, reports from European trauma centres are lacking. We report the current experience from a Scandinavian trauma hospital. METHODS: Identification of all consecutive ETs performed during a 5-year period. Data on demographics, and injury severity score (ISS), mechanism and location were recorded. Physiological status on admission (revised trauma score, RTS) and probability of survival (Ps) were calculated. Signs of life (SOL) and need for closed-chest cardiopulmonary resuscitation (CC-CPR) were recorded through the post-injury phase. RESULTS: Ten patients underwent ET with no survivors. The annual incidence of ET was 0.7 per 100,000 inhabitants during the study period, with an increasing trend during the last years (r=0.74, p=0.014). ETs were performed in 0.7% of all trauma admissions, and in 2.5% of all severely injured patients (ISS>or=16). Blunt mechanism dominated; only three had penetrating injuries. Most frequent location of major injury was "multiple" (n=4) and "thoracic" (n=4). The male to female ratio was 7:3. Median age was 51 years (range 21-77). Median ISS was 34.5 (range 26-75), indicating severely injured patients, with seriously deranged physiology (median RTS of 0.0, range 0-6.1) with poor chance of survival (median Ps of 4.4%, range 0-89.5%). Males had significantly lower RTS and Ps (p=0.007 and 0.03, respectively) than females. Eight patients had signs of life at some time post-injury, but only four in the emergency room. Six patients had both pre- and in-hospital CC-CPR. Four patients had additional surgery to ET. Two possible preventable deaths were identified (Ps) of 51 and 89%), one in a third trimester pregnancy. CONCLUSION: Emergency thoracotomy is a rarely performed procedure in a rather busy Scandinavian trauma hospital, and outcome is dismal. Reevaluation of our decision-making process concerning the use of emergency thoracotomy is needed. How survival data and clinical experience in Europe compare to current figures from North America deserves further attention.     

Benchmarking emergency department thoracotomy: Using trauma video review to generate procedural norms

IntroductionEmergency department thoracotomy (EDT) must be rapid and well-executed. Currently there are no defined benchmarks for EDT procedural milestones. We hypothesized that trauma video review (TVR) can be used to define the ‘normative EDT’ and generate procedural benchmarks. As a secondary aim, we hypothesized that data collected by TVR would have less missingness and bias than data collected by review of the Electronic Medical Record (EMR).MethodsWe used continuously recording video to review all EDTs performed at our centre during the study period. Using skin incision as start time, we defined four procedural milestones for EDT: 1. Decompression of the right chest (tube thoracostomy, finger thoracostomy, or clamshell thoracotomy with transverse sternotomy performed in conjunction with left anterolateral thoracotomy) 2. Retractor deployment 3. Pericardiotomy 4. Aortic Cross-clamp. EDTs with any milestone time ≥ 75^th percentile of time or during which a milestone was omitted were identified as outliers. We compared rates of missingness in data collected by TVR and EMR using McNemar’s test.Results44 EDTs were included from the study period. Patients had a median age of 30 [IQR 25–44] and were predominantly African-American (95%) males (93%) with penetrating trauma (95%). From skin incision, median times in minutes to milestones were as follows: right chest decompression: 2.11 [IQR 0.68–2.83], retractor deployment 1.35 [IQR 0.96–1.85], pericardiotomy 2.35 [IQR 1.85–3.75], aortic cross-clamp 3.71 [IQR 2.83–5.77]. In total, 28/44 (64%) of EDTs were either high outliers for one or more benchmarks or had milestones that were omitted. For all milestones, rates of missingness for TVR data were lower than EMR data (p < 0.001).ConclusionsVideo review can be used to define normative times for the procedural milestones of EDT. Steps exceeding the 75^th percentile of time were common, with over half of EDTs having at least one milestone as an outlier. Data quality is higher using TVR compared to EMR collection. Future work should seek to determine if minimizing procedural technical outliers improves patient outcomes.     

Evaluation of massive transfusion protocol practices by type of trauma at a level I trauma center

Purpose

To evaluate massive transfusion protocol practices by trauma type at a level I trauma center.

Hemodynamic variables predict outcome of emergency thoracotomy in the pediatric trauma population

Background

Limited data exist regarding indications for resuscitative emergency thoracotomy (ETR) in the pediatric population. We attempt to define the presenting hemodynamic parameters that predict survival for pediatric patients undergoing ETR.

Methods

We reviewed all pediatric patients (age < 18 years), entered into the National Trauma Data Bank from 2007 to 2010, who underwent ETR within one hour of ED arrival. Mechanism of injury and hemodynamics were analyzed using Chi squared and Wilcoxon tests.

Results

316 children (70 blunt, 240 penetrating) underwent ETR, 31% (98/316) survived to discharge. Less than 5% of patients survived when presenting SBP was ≤ 50 mmHg or heart rate was ≤ 70 bpm. For blunt injuries there were no survivors with a pulse ≤ 80 bpm or SBP ≤ 60 mmHg. When survivors were compared to nonsurvivors, blood pressure, pulse, and injury type were statistically significant when treated as independent variables and in a logistic regression model.

Conclusions

When ETR was performed for SBP ≤ 50 mmHg or for heart rate ≤ 70 bpm less than 5% of patients survived. There were no survivors of blunt trauma when SBP was ≤ 60 mmHg or pulse was ≤ 80 bpm. This review suggests that ETR may have limited benefit in these patients.     

Rescue extracorporeal membrane oxygenation in a young man with a stab wound in the chest

A 27-year-old man with haemorrhagic shock and acute cardiac tamponade due to a stab in the chest underwent successful resuscitation and surgical repair of the right ventricular perforation thanks to the use of extracorporeal membrane oxygenation (ECMO) in the emergency department. To the best of the authors’ knowledge, this is the first report around the use of ECMO to rescue a victim of a penetrating cardiac trauma. The physicians who have portable ECMO device should be aware of this option when a life-threatening internal bleeding in haemodynamically unstable patients could be quickly controlled by surgery, even if performed in ill-suited settings.     

The utility of an autologous blood salvage system in emergency thoracotomy for a hemothorax after chest trauma

In Japan, little is known about using the Cell Saver in treating blunt or penetrating chest trauma. We therefore report the utility of this autologous blood salvage device. Two patients underwent emergency thoracotomies with the Cell Saver to treat massive hemothorax and made full recoveries. The first was a 29-year-old man who suffered a stab injury to his chest; 5000 ml blood was collected from the thorax, of which about 3000 ml was reinfused. The second was a 51-year-old man involved in a car crash; 1600 ml blood was collected from the thorax, of which about 500 ml was reinfused. When no banked blood is available for an emergency thoracotomy, the Cell Saver is an extremely useful machine. This device is also effective in treating progressive hemorrhagic shock and helpful when the rate of blood loss exceeds the supply available from the blood bank.     

Out of hospital thoracotomy for cardiac arrest after penetrating thoracic trauma

IntroductionEmergency department thoracotomy is an established procedure for cardiac arrest in patients suffering from penetrating thoracic trauma and yields relatively high survival rates (up to 21%) in patients with cardiac tamponade. To minimize the delay between arrest and thoracotomy, some have advocated thoracotomy on the accident scene. The aim of this study was to determine the proportion of patients with return of spontaneous circulation and subsequent survival after out of hospital thoracotomy in the Netherlands.MethodsA retrospective analysis of data collected on all out of hospital thoracotomies performed in the Netherlands after penetrating trauma between April 1st, 2011 and September 30th, 2016 was performed. Data on patient characteristics, trauma mechanism and outcome were collected and analyzed. Primary outcome measure was return of spontaneous circulation after the intervention. Survival to hospital discharge was the secondary outcome variable.ResultsThirty-three prehospital emergency thoracotomies were performed. Ten patients (30%) had gunshot wounds and 23 patients (70%) had stab wounds. Nine patients (27%) had return of spontaneous circulation and were presented to the hospital. Of these, one patient survived until discharge without neurological damage. Five died in the emergency department or operating room and three died in ICU.ConclusionReturn of spontaneous circulation after out of hospital thoracotomy for cardiac arrest due to penetrating thoracic injury is achievable, but a substantial number of patients die during the in hospital resuscitation phase. However, neurologic intact survival can be achieved.     

A novel streamlined trauma response team training improves imaging efficiency for pediatric blunt abdominal trauma patients

Background/purposeThe morbidity and mortality of children with traumatic injuries are directly related to the time to definitive management of their injuries. Imaging studies are used in the trauma evaluation to determine the injury type and severity. The goal of this project is to determine if a formal streamlined trauma response improves efficiency in pediatric blunt trauma by evaluating time to acquisition of imaging studies and definitive management.MethodsThis study is a chart review of patients < 18 years who presented to a pediatric trauma center following blunt trauma requiring trauma team activation. 413 records were reviewed to determine if training changed the efficiency of CT acquisition and 652 were evaluated for FAST efficiency. The metrics used for comparison were time from ED arrival to CT image, FAST, and disposition.ResultsTime from arrival to CT acquisition decreased from 37 (SD 23) to 28 (SD27) min (p < 0.05) after implementation. The proportion of FAST scans increased from 315 (63.5%) to 337 (80.8%) and the time to FAST decreased from 18 (SD15) to 8 (SD10) min (p < 0.05). The time to operating room (OR) decreased after implementation.ConclusionThe implementation of a streamlined trauma team approach is associated with both decreased time to CT, FAST, OR, and an increased proportion of FAST scans in the pediatric trauma evaluation. This could result in the rapid identification of injuries, faster disposition from the ED, and potentially improve outcomes in bluntly injured children.Type of studyTherapeuticLevel of evidenceLevel III     

Survival following resuscitative thoracotomy for combined left ventricle and left atrium ruptures secondary to blunt trauma

Improvements in pre-hospital care and the development of integrated Trauma Systems have streamlined access for the severely injured to sophisticated, specialist Trauma Centre reception and resuscitation. We describe the initial care of a survivor of combined ruptures of the left ventricle and left atrium secondary to blunt injury. This case emphasises the contribution of such a Trauma System in achieving a favourable outcome for a severely injured trauma patient with injuries previously considered non-survivable.     

The utility of chest X-ray as a screening tool for blunt thoracic aortic injury

BackgroundThe early and accurate identification of patients with blunt thoracic aortic injury (BTAI) remains a challenge. Traditionally, a portable AP chest X-ray (CXR) is utilized as the initial screening modality for BTAI, however, there is controversy surrounding its sensitivity. The purpose of this study was to assess the sensitivity of CXR as a screening modality for BTAI.MethodsAfter IRB approval, all adult (≥18 yo) blunt trauma patients admitted to LAC+USC (01/2011–12/2013) who underwent CXR and chest CT were retrospectively reviewed. Final radiology attending CXR readings were reviewed for mediastinal abnormalities (widened mediastinum, mediastinal to chest width ratio greater than 0.25, irregular aortic arch, blurred aortic contour, opacification of the aortopulmonary window, and apical pleural haematoma) suggestive of aortic injury. Chest CT final attending radiologist readings were utilized as the gold standard for diagnosis of BTAI. The primary outcome analyzed was CXR sensitivity.ResultsA total of 3728 patients were included in the study. The majority of patients were male (72.6%); mean age was 43 (SD 20). Median ISS was 9 (IQR 4–17) and median GCS was 15 (IQR 14–15). The most common mechanism of injury was MVC (48.0%), followed by fall (20.6%), and AVP (16.9%). The total number of CXRs demonstrating a mediastinal abnormality was 200 (5.4%). Widened mediastinum was present on 191 (5.1%) of CXRs, blurred aortic contour on 10 (0.3%), and irregular aortic arch on 4 (0.1%). An acute aortic injury confirmed by chest CT was present in 17 (0.5%) patients. Only 7 of these with CT-confirmed BTAI had a mediastinal abnormality identified on CXR, for a sensitivity of 41% (95% CI: 19–67%).ConclusionThe results from this study suggest that CXR alone is not a reliable screening modality for BTAI. A combination of screening CXR and careful consideration of other factors, such as mechanism of injury, will be required to effectively discriminate between those who should and should not undergo chest CT.     

Predictors of outcome in patients requiring surgery for liver trauma

INTRODUCTION: Severe bleeding from liver injury is one of the major causes of mortality in patients with abdominal trauma. The study was undertaken to assess factors that influence outcome following liver trauma. PATIENTS AND METHODS: This is a prospective study of patients with liver injury treated in one surgical ward at King Edward VIII Hospital over a 7-year period (from 1998 to 2004). Data collected included demographics, intra-operative findings, operative management and outcome. RESULTS: Of a total of 478 patients with abdominal trauma, 105 (22%) were found to have liver injuries, of whom only 7 were female. Their mean age was 27.81+/-10.33 years. Injuries were due to firearms (70), stabs (26) and blunt trauma (9). Nineteen patients presented with shock (systolic BP6h in 47 patients. Forty patients required ICU management (38%) and the mean ICU stay was 6.55+/-5.65 days. Twenty patients (19%) needed a re-laparotomy for various reasons. The complication rate was 37% and the mortality rate was 20% (23% for firearms, 44% for blunt trauma and 4% for stabs). The mortality rate in patients with shock was 58% compared to 12% in those who were not shocked (p<0.0001). Mortality rate was 2, 23 and 63% for Injury Severity Score (ISS)20, respectively (group 1 versus group 2 p=0.015; group 1 versus group 3 p<0.0001 and group 2 versus group 3 p=0.001). Mortality rates for delay 6h were 28 and 9%, respectively (p=0.008). Associated injuries led to a higher mortality (3% versus 27%; p=0.006). Hospital stay was 11.27+/-12.09 days. CONCLUSIONS: Liver injuries occurred in 22% of abdominal injuries. Injury mechanism, delay before surgery, shock on admission, grade of injury, associated injury and ISS are significantly associated with outcome.     

Evaluation of a tiered trauma call system in a level 1 trauma centre

Background

Appropriate triage of the trauma patient is essential to ensure prompt access to definitive care. Many trauma centres use a “tiered” trauma call protocol with the intention of providing a match between the facility's resources and the needs of the patient. This study describes the incidence and impact of undertriage on the trauma patient in the context of an Australian level 1 trauma centre with a tiered trauma call system.

Methods

This was a retrospective analysis of prospective data collected through the Trauma Registry. Undertriage was defined as sustaining an injury severity score greater than 15 and receiving a non-optimal response (i.e., trauma standby call or no call). The level of association between outcome measures (such as LOS in ED, time to OT) and the level of trauma call the patient received was assessed using a general linear model, controlling for injury severity and haemodynamic stability.

Results

Between February 2004 and November 2008, 5233 patients meeting trauma criteria presented to the study hospital. There was an undertriage rate of 42% and overtriage rate of 21%. Patients were more likely to be undertriaged if they were older, self-presented, their cause of injury was assault or their head or chest were their most severely injured body region. Undertriaged patients had a significantly longer LOS in the ED (2 h) than appropriately triaged patients.

Conclusion

The implementation of a tiered trauma call system resulted in significant undertriage, especially if the patient was older, had been assaulted or had a head/chest injury. Undertriaged patients experienced delay to definitive care. This study has highlighted the importance of compliance with trauma team activation criteria, trauma monitoring and evaluation.     

Insurance status predicts survival for trauma patients undergoing urgent intervention

Background

The purpose of this study was to investigate the relationship between insurance status and outcomes for trauma patients presenting without vital signs undergoing urgent intervention.

Materials and methods

The National Trauma Data Bank was queried for patients presenting with a systolic blood pressure equal to zero and a Glasgow Coma Scale score of three (“clinically dead”), who underwent urgent thoracotomy and–or laparotomy (UTL). Insured patients were compared with uninsured (INS [−]) patients.

Results

There were 18,171 patients presenting clinically dead having a payment source documented. INS (−) patients were more likely to undergo UTL (5.4% [416–7704] versus 2.7% [285–10,467], 1.481 [1.390–1.577], <0.001). Out of 689 patients who underwent UTL and meeting inclusion criteria, 416 (60.4%) were INS (−). Patients with insurance demonstrated a significantly greater survival (9.9% [27–273] versus 1.7% [7–416], 5.878 [2.596–13.307] P < 0.001). Adjusting for mechanism, race, age, injury severity, and comorbidities, insured status was independently associated with survival.

Conclusions

The presence of health insurance is independently associated with survival in trauma patients presenting with cardiovascular collapse who undergo urgent surgical intervention.     

Prehospital triage and survival of major trauma patients in a Dutch regional trauma system: relevance of trauma registry

Background and aims Since 1999, the Dutch trauma care has been regionalized into ten trauma systems. This study is the first to review such a trauma system. The aim was to examine the sensitivity of prehospital triage criteria [triage revised trauma score (T-RTS)] in identifying major trauma patients and to evaluate the current level of trauma care of a regionalized Dutch trauma system for major trauma patients.Patients and methods Major trauma patients (n=511) (June 2001–December 2003) were selected from a regional trauma registry database. The prehospital T-RTS was computed and standardized W scores (Ws) were generated to compare observed vs expected survival based on contemporary US- and UK-norm databases.Results The T-RTS showed low sensitivity for the prehospital identification of major trauma patients [34.1% (T-RTS≤10)]. Nevertheless, 78.0% of all major trauma patients were directly managed by the trauma center. These patients were more severely injured than their counterparts at non-trauma-center hospitals (p<0.001). No significant difference emerged between the mortality rates of both groups. The Ws {−0.46 calculated on the US model [95% confidence interval (CI) ranging from −1.99 to 1.07]} [0.60 calculated on the UK model (95% CI ranging from −1.25 to 2.44)] did not differ significantly from zero.Conclusion The trauma center managed most of the major trauma patients in the trauma system but the triage criteria need to be reconsidered. The level of care of the regional trauma system was shown to measure up to US and UK benchmarks.     

Evolution, not revolution: splenic salvage for blunt trauma in a statewide voluntary trauma system--a 10-year experience

BACKGROUND: State-legislated trauma systems have been enacted in an attempt to improve trauma care. Blunt splenic injury incidence without a legislated trauma system was examined for changes in care with a hypothesis that a voluntary system may perform equally with a legislated system. METHODS: Data from a statewide discharge database for the years 1993 to 2002 were examined. RESULTS: There were 276,425 trauma admissions overall, with blunt splenic injury occurring in 1.76%. Average Injury Severity Score (ISS) increased in trauma centers and decreased in the community. Trauma centers (TC) had more multisystem injuries. Splenic injury diagnosis increased 44% in TC between the early and late periods but only 7% in community facilities. Splenectomies increased 16% in TC but declined 16% in community hospital. Splenic salvage rate improved at both types of facilities. CONCLUSIONS: Splenic salvage rates improved over time in hospitals with no formal trauma system. Community hospitals cared for more than 50% of splenic injuries but transferred complex multisystem injuries, including splenic injuries, suggesting evolving care. Non-invasive imaging has increased the recognition of splenic injuries in both community hospitals and TC. Splenectomies are performed less, but have increased in TC with increasing ISS scores.