Management of extremity fasciotomy sites prospective randomized evaluation of two techniques.

INTRODUCTION: Morbidity from the treatment of extremity compartment syndrome is underappreciated. Closure technique effectiveness has yet to be definitively established. METHODS: A randomized non-blinded prospective study was performed involving patients who underwent an extremity fasciotomy following trauma. Shoelace wounds were strapped with vessel loops under tension and VAC wounds were treated with a standard KCI VAC dressing. After randomization, patients returned to the OR every 96 h until primarily closed or skin grafted. RESULTS: 21 patients were consented for randomization with 11 (52%) successfully closed at the first re-operation. After interim analysis the study was closed early with 5/5 (100%) of wounds treated with the shoelace technique closed primarily and only 1/9 (11%) of VAC wounds closed primarily (p = 0.003). Overall primary closure was achieved in 74% of patients. CONCLUSIONS: Aggressive attempts at wound closure lead to an increased early closure rate. For wounds that remain open after the first re-operation, a simple shoelace technique is more successful than a wound VAC for achieving same hospital stay skin closure.

Percutaneous Tracheostomy under Bronchoscopic Visualization Does Not Affect Short-Term or Long-Term Complications.

Percutaneous tracheostomy is a safe and effective bedside procedure. Some advocate the use of bronchoscopy during the procedure to reduce the rate of complications. We evaluated our complication rate in trauma patients undergoing percutaneous tracheostomy with and without bronchoscopic guidance to ascertain if there was a difference in the rate of complications. A retrospective review of all tracheostomies performed in critically ill trauma patients was performed using the trauma registry from an urban, Level I Trauma Center. Bronchoscopy assistance was used based on surgeon preference. Standard statistical methodology was used to determine if there was a difference in complication rates for procedures performed with and without the bronchoscope. From January 2007, to April 2016, 649 patients underwent modified percuteaneous tracheostomy; 289 with the aid of a bronchoscope and 360 without. There were no statistically significant differences in any type of complication regardless of utilization of a bronchoscope. The addition of bronchoscopy provides several theoretical benefits when performing percutaneous tracheostomy. Our findings, however, do not demonstrate a statistically significant difference in complications between procedures performed with and without a bronchoscope. Use of the bronchoscope should, therefore, be left to the discretion of the performing physician.

Reassessing the cardiac box: A comprehensive evaluation of the relationship between thoracic gunshot wounds and cardiac injury.

BACKGROUND: High-energy missiles can cause cardiac injury regardless of entrance site. This study assesses the adequacy of the anatomic borders of the current "cardiac box" to predict cardiac injury. METHODS: Retrospective autopsy review was performed to identify patients with penetrating torso gunshot wounds (GSWs) 2011 to 2013. Using a circumferential grid system around the thorax, logistic regression analysis was performed to detect differences in rates of cardiac injury from entrance/exit wounds in the "cardiac box" versus the same for entrance/exit wounds outside the box. Analysis was repeated to identify regions to compare risk of cardiac injury between the current cardiac box and other regions of the thorax. RESULTS: Over the study period, 263 patients (89% men; mean age, 34 years; median injuries/person, 2) sustained 735 wounds (80% GSWs), and 239 patients with 620 GSWs were identified for study. Of these, 95 (34%) injured the heart. Of the 257 GSWs entering the cardiac box, 31% caused cardiac injury, whereas 21% GSWs outside the cardiac box (n = 67) penetrated the heart, suggesting that the current "cardiac box" is a poor predictor of cardiac injury relative to the thoracic non-"cardiac box" regions (relative risk [RR], 0.96; p = 0.82). The regions from the anterior to posterior midline of the left thorax provided the highest positive predictive value (41%) with high sensitivity (90%) while minimizing false-positives, making this region the most statistically significant discriminator of cardiac injury (RR, 2.9; p = 0.01). CONCLUSION: For GSWs, the current cardiac box is inadequate to discriminate whether a GSW will cause a cardiac injury. As expected, entrance wounds nearest to the heart are the most likely to result in cardiac injury, but, from a clinical standpoint, it is best to think outside the "box" for GSWs to the thorax. LEVEL OF EVIDENCE: Therapeutic/care management, level IV.

Factors affecting mortality after penetrating cardiac injuries: 10-year experience at urban level I trauma center.

BACKGROUND: Despite the lethality of injuries to the heart, optimizing factors that impact mortality for victims that do survive to reach the hospital is critical. METHODS: From 2003 to 2012, prehospital data, injury characteristics, and clinical patient factors were analyzed for victims with penetrating cardiac injuries (PCIs) at an urban, level I trauma center. RESULTS: Over the 10-year study, 80 PCI patients survived to reach the hospital. Of the 21 factors analyzed, prehospital cardiopulmonary resuscitation (odds ratio [OR] = 30), scene time greater than 10 minutes (OR = 58), resuscitative thoracotomy (OR = 19), and massive left hemothorax (OR = 15) had the greatest impact on mortality. Cardiac tamponade physiology demonstrated a "protective" effect for survivors to the hospital (OR = .08). CONCLUSIONS: Trauma surgeons can improve mortality after PCI by minimizing time to the operating room for early control of hemorrhage. In PCI patients, tamponade may provide a physiologic advantage (lower mortality) compared to exsanguination.

Penetrating cardiac injuries: A 36-year perspective at an urban, Level I trauma center.

BACKGROUND: This study evaluates patterns of injuries and outcomes from penetrating cardiac injuries (PCIs) at Grady Memorial Hospital, an urban, Level I trauma center in Atlanta, Georgia, over 36 years. METHODS: Patients sustaining PCIs were identified from the Trauma Registry of the American College of Surgeons and the Emory Department of Surgery database; data of patients who died prior to any therapy were excluded. Demographics and outcomes were compared over three time intervals: Period 1 (1975-1985; n = 113), Period 2 (1986-1996; n = 79), and Period 3 (2000-2010; n = 79). RESULTS: Two hundred seventy-one patients (86% were male; mean age, 33 years; initial base deficit = -11.3 mEq/L) sustained cardiac stab (SW, 60%) or gunshot wounds (GSW, 40%). Emergency department thoracotomy was performed in 67 (25%) of 271 patients. Overall mortality increased in the modern era (Period 1, 27%, vs. Period 2, 22%, vs. Period 3, 42%; p = 0.03) along with GSW mechanisms (Period 1, 32%, vs. Period 2, 33%, vs. Period 3, 57%; p = 0.001), GSW mortality (Period 1, 36%, vs. Period 2, 42%, vs. Period 3, 56%; p = 0.04), and multichamber injuries (Period 1, 12%, vs. Period 2, 10%, vs. Period 3, 34%; p< 0.001). In Period 3, GSWs (n = 45) resulted in multichamber injuries in 28 patients (62%) and multicavity injuries in 19 patients (42%). Surgeon-performed ultrasound accurately identified pericardial blood in 55 of 55 patients in Period 3. CONCLUSIONS: Increased frequency of GSWs in the past decade is associated with increased overall mortality, multichamber injuries, and multicavity injuries. Ultrasound is sensitive for detection of PCI. LEVEL OF EVIDENCE: Therapeutic study, level IV; epidemioligc study, level III.

Immediate post-traumatic pulmonary embolism is not associated with right ventricular dysfunction.

BACKGROUND: Post-traumatic pulmonary embolic events are associated with significant morbidity. Computed tomographic (CT) measurements can be predictive of right ventricular (RV) dysfunction after pulmonary embolus. However, it remains unclear whether these physiologic effects or clinical outcomes differ between early (<48 hours) vs late (≥48 hours) post-traumatic pulmonary embolism (PE). METHODS: All patients with traumatic injury and CT evidence of PE between 2008 and 2013 were identified. The study population was divided into 2 groups based on the time of diagnosis of the PE. The primary outcome was PE-related mortality. RESULTS: Fifty patients were identified (14 early PE and 36 late PE). Patients sustaining a late PE had a higher PE-related mortality rate (16.7% vs 0%), larger RV diameters, RV/left ventricular diameter ratios, RV volumes, and RV/left ventricular volume ratios (all P < .05). CONCLUSIONS: Early post-traumatic PE appears to be associated with fewer RV physiologic changes than late post-traumatic PE and may be representative of primary pulmonary thrombosis. It remains to be seen whether early CT findings of PE should be managed according to previously established guidelines for embolic disease.

Retrospective review of injury severity, interventions and outcomes among helicopter and nonhelicopter transport patients at a Level 1 urban trauma centre.

BACKGROUND: Air ambulance transport for injured patients is vitally important given increasing patient volumes, the limited number of trauma centres and inadequate subspecialty coverage in nontrauma hospitals. Air ambulance services have been shown to improve patient outcomes compared with ground transport in select circumstances. Our primary goal was to compare injuries, interventions and outcomes in patients transported by helicopter versus nonhelicopter transport. METHODS: We performed a retrospective 10-year review of 14 440 patients transported to an urban Level 1 trauma centre by helicopter or by other means. We compared injury severity, interventions and mortality between the groups. RESULTS: Patients transported by helicopter had higher median injury severity scores (ISS), regardless of penetrating or blunt injury, and were more likely to have Glasgow Coma Scale scores less than 8, require airway control, receive blood transfusions and require admission to the intensive care unit or operating room than patients transported by other means. Helicopter transport was associated with reduced overall mortality (odds ratio 0.41, 95% confidence interval 0.33-0.39). Patients transported by other methods were more likely to die in the emergency department. The mean ISS, regardless of transport method, rose from 12.3 to 15.1 (p = 0.011) during our study period. CONCLUSION: Patients transported by helicopter to an urban trauma centre were more severely injured, required more interventions and had improved survival than those arriving by other means of transport.

CONTEXTE: Le transport par ambulance aérienne pour les polytraumatisés est d'une importance vitale compte tenu du volume croissant de patients, du nombre limité de centres de traumatologie et des effectifs insuffisants en médecine de spécialité dans les hôpitaux dépourvus d'unités de traumatologie. Les services de transport ambulanciers aériens ont la capacité d'améliorer les résultats chez les patients, comparativement au transport terrestre dans certaines situations. Notre objectif principal était de comparer les traumatismes, les interventions et les résultats chez les patients transportés par hélicoptère ou autrement. MÉTHODES: Nous avons procédé à une revue rétrospective sur 10 ans du transport de 14 440 patients vers un centre urbain de traumatologie de niveau 1 par hélicoptère ou autrement. Nous avons comparé la gravité des blessures, les interventions et la mortali té entre les groupes. RÉSULTATS: Les patients transportés par hélicoptère présentaient des indices médians de gravité des blessures plus élevés, indépendamment de la nature ouverte ou fermée des blessures, et ils étaient plus susceptibles de présenter un score inférieur à 8 sur l'échelle de Glasgow, de nécessiter une intubation, de recevoir des transfusions sanguines et d'être admis aux soins intensifs ou au bloc opératoire, comparativement aux patients transportés autrement. Le transport par hélicoptère a été associé à une mortalité globale moins élevée (rapport des cotes 0,41; intervalle de confiance de 95 % 0,33­0,39). Les patients transportés autrement étaient plus susceptibles de mourir à l'urgence. Le score moyen de gravité des blessures, indépendamment du moyen de transport, est passé de 12,3 à 15,1 (p = 0,011) durant la période de l'étude. CONCLUSION: Les patients transportés par hélicoptère vers un centre de traumatologie urbain étaient plus grièvement blessés, nécessitaient plus d'interventions et leur survie a été meilleure que celle des patients transportés autrement.

Help is in your pocket: the potential accuracy of smartphone- and laptop-based remotely guided resuscitative telesonography.

BACKGROUND: Ultrasound (US) examination has many uses in resuscitation, but to use it to its full effectiveness typically requires a trained and proficient user. We sought to use information technology advances to remotely guide US-naive examiners (UNEs) using a portable battery-powered tele-US system mentored using either a smartphone or laptop computer. MATERIALS AND METHODS: A cohort of UNEs (5 tactical emergency medicine technicians, 10 ski-patrollers, and 4 nurses) was guided to perform partial or complete Extended Focused Assessment with Sonography of Trauma (EFAST) examinations on both a healthy volunteer and on a US phantom, while being mentored by a remote examiner who viewed the US images over either an iPhone(®) (Apple, Cupertino, CA) or a laptop computer with an inlaid depiction of the US probe and the "patient," derived from a videocamera mounted on the UNE's head. Examinations were recorded as still images and over-read from a Web site by seven expert reviewers (ERs) (three surgeons, two emergentologists, and two radiologists). Examination goals were to identify lung sliding (LS) documented by color power Doppler (CPD) in the human and to identify intraperitoneal (IP) fluid in the phantom. RESULTS: All UNEs were successfully mentored to easily and clearly identify both LS (19 determinations) and IP fluid (14 determinations), as assessed in real time by the remote mentor. ERs confirmed IP fluid in 95 of 98 determinations (97%), with 100% of ERs perceiving clinical utility for the abdominal Focused Assessment with Sonography of Trauma. Based on single still CPD images, 70% of ERs agreed on the presence or absence of LS. In 16 out of 19 cases, over 70% of the ERs felt the EFAST exam was clinically useful. CONCLUSIONS: UNEs can confidently be guided to obtain critical findings using simple information technology resources, based on the receiving/transmitting device found in most trauma surgeons' pocket or briefcase. Global US mentoring requires only Internet connectivity and initiative.

The impact of a massive transfusion protocol (1:1:1) on major hepatic injuries: does it increase abdominal wall closure rates?

BACKGROUND: Massive transfusion protocols (MTPs) using high plasma and platelet ratios for exsanguinating trauma patients are increasingly popular. Major liver injuries often require massive resuscitations and immediate hemorrhage control. Current published literature describes outcomes among patients with mixed patterns of injury. We sought to identify the effects of an MTP on patients with major liver trauma. METHODS: Patients with grade 3, 4 or 5 liver injuries who required a massive blood component transfusion were analyzed. We compared patients with high plasma:red blood cell:platelet ratio (1:1:1) transfusions (2007-2009) with patients injured before the creation of an institutional MTP (2005-2007). RESULTS: Among 60 patients with major hepatic injuries, 35 (58%) underwent resuscitation after the implementation of an MTP. Patient and injury characteristics were similar between cohorts. Implementation of the MTP significantly improved plasma: red blood cell:platelet ratios and decreased crystalloid fluid resuscitation (p = 0.026). Rapid improvement in early acidosis and coagulopathy was superior with an MTP (p = 0.009). More patients in the MTP group also underwent primary abdominal fascial closure during their hospital stay (p = 0.021). This was most evident with grade 4 injuries (89% vs. 14%). The mean time to fascial closure was 4.2 days. The overall survival rate for all major liver injuries was not affected by an MTP (p = 0.61). CONCLUSION: The implementation of a formal MTP using high plasma and platelet ratios resulted in a substantial increase in abdominal wall approximation. This occurred concurrently to a decrease in the delivered volume of crystalloid fluid.

CONTEXTE: Les protocoles de transfusion massive (PTM) impliquant des rapports plasma:plaquettes élevés sont de plus en plus populaires pour traiter les patients atteints d'un traumatisme hémorragique. Les chirurgies majeures du foie requièrent souvent le déclenchement de protocoles de transfusion massive et une maîtrise immédiate de l'hémorragie. La littérature actuelle décrit les résultats chez des patients victimes de divers types de traumatismes. Nous avons voulu mesurer les effets d'un PTM sur les patients ayant subi un traumatisme majeur au foie. MÉTHODES: Nous avons analysé les dossiers de patients ayant subi des blessures au foie de grade 3, 4 ou 5 qui ont nécessité des transfusions massives de composants sanguins. Nous avons comparé les patients ayant nécessité des transfusions importantes de plasma, de culots globulaires et de plaquettes selon un rapport (1:1:1; 2007­2009) à des patients ayant subi leur traumatisme avant la mise en oeuvre d'un PTM par l'établissement (2005­2007). RÉSULTATS: Sur 50 patients ayant subi des lésions hépatiques majeures, 35 (58%) ont reçu des traitements de réanimation après la mise en place du PTM. Les caractéristiques propres aux patients et à leurs blessures étaient similaires entre les cohortes. L'application du PTM a significativement amélioré les rapports plasma:culots globulaires:plaquettes et réduit l'administration de cristalloïdes à des fins de réanimation liquidienne (p = 0,026). L'amélioration rapide de l'acidose naissante et de la coagulopathie a été meilleure avec le PTM (p = 0,009). Plus de patients du groupe soumis au PTM ont aussi subi une fermeture aponévrotique abdominale primaire durant leur séjour hospitalier (p = 0,021). Cela s'est surtout observé avec les lésions de grade 4 (89% c. 14%). Le délai moyen avant la fermeture aponévrotique a été de 4,2 jours. L'application du PTM n'a pas modifié le taux de survie global pour l'ensemble des traumatismes hépatiques majeurs (p = 0,61). CONCLUSION: La mise en place d'un PTM officiel reposant sur des rapports plasma et plaquettes élevés a donné lieu à une augmentation substantielle des fermetures de la paroi abdominale. Cela s'est produit en parallèle avec une diminution du volume de cristalloïdes administrés pour la réanimation liquidienne.

Modern management of penetrating tracheal injuries.

Complications after tracheal repair in the past have included wound infections, tracheal stenosis, "spitting" of sutures, and tracheoesophageal fistulas. Modern operative approaches have significantly decreased the incidence of these complications. We conducted retrospective data collection using the TRACS database. Changes that preceded the time interval of the study included the following: 1) an emphasis on clinical (rather than endoscopic) recognition of injury; 2) minimal peritracheal dissection and repair with absorbable sutures; 3) limited use of "protective" tracheostomies; and 4) use of muscle buttresses to cover tracheal repairs, especially in patients with combined injuries. From 1997 to 2010, 22 patients were treated for wounds to the trachea (cervical 20, thoracic 2). The mechanism of injury was a gunshot wound in 15 patients and a stab wound in seven. A clinical diagnosis of the need for cervical operation or of a tracheal injury was made in 19 patients (86%), whereas three patients had positive diagnostic studies. Direct tracheal repair (No. 19) or evaluation of a superficial injury (No. 1) was performed in 20 patients, and three (15%) had a tracheostomy performed. Combined injuries were present in 12 patients (55%), most commonly to the esophagus (10 of 12 [83%]), and 10 of these 12 patients had vascularized buttresses applied to the tracheal repair. There were seven significant complications in patients with combined injuries to the esophagus or carotid artery. One patient (4.5%) died. Patients with penetrating tracheal injuries most commonly present with overt findings. Modern techniques of repair have eliminated many of the complications noted in the past.

Outcomes after massive transfusion in nontrauma patients in the era of damage control resuscitation.

There are little data regarding the use of massive transfusion protocols (MTP) outside of the trauma setting. This study compares the use of an MTP between trauma and non-trauma (NT) patients. Data were collected for trauma and NT patients from the prospectively maintained MTP database at a Level I trauma center over a 4-year period. Massive transfusion was defined as ≥ 10 units packed red blood cells (PRBCs) in a 24-hour period. Of 439 MTP activations, 37 (8%) were NT patients (64% male; mean age = 51 years, initial base deficit = -10.8). Activations were for gastrointestinal bleeding (n = 18), bleeding during surgery (n = 13), obstetrical complications (n = 5), and ruptured aortic aneurysm (n = 1). Over-activation of MTP (<10 units PRBCs/24 hours) was higher in NT than trauma patients (19/37, 51% vs 118/284, 29%, P < 0.01). For massive transfusion patients, 24-hour mortality was higher in NT compared with trauma patients (10/17, 59% vs 100/284, 35%, P = 0.05), but there was no difference in 30-day mortality (10/17, 59% vs 144/284, 51%, P = 0.51). With over-activation in 51% of NT patients, MTP usage outside of trauma is inefficient. Outcomes in NT patients were worse than trauma patients, which may be related to the underlying disease processes.

Base deficit as a marker of survival after traumatic injury: consistent across changing patient populations and resuscitation paradigms.

BACKGROUND: Damage control resuscitation (DCR) has improved outcomes in severely injured patients. In civilian centers, massive transfusion protocols (MTPs) represent the most formal application of DCR principles, ensuring early, accurate delivery of high fixed ratios of blood components. Recent data suggest that DCR may also help address early trauma-induced coagulopathy. Finally, base deficit (BD) is a long-recognized and simple early prognostic marker of survival after injury. METHODS: Outcomes of patients with admission BD data resuscitated during the DCR era (2007-2010) were compared with previously published data (1995-2003) of patients cared for before the DCR era (pre-DCR). Patients were considered to have no hypoperfusion (BD, >-6), mild (BD, -6 to -14.9), moderate (BD, -15 to -23.9), or severe hypoperfusion (BD, <-24). RESULTS: Of 6,767 patients, 4,561 were treated in the pre-DCR era and 2,206 in the DCR era. Of the latter, 218 (9.8%) represented activations of the MTP. DCR patients tended to be slightly older, more likely victims of penetrating trauma, and slightly more severely injured as measured by trauma scores and BD. Despite these differences, overall survival was unchanged in the two eras (86.4% vs. 85.7%, p = 0.67), and survival curves stratified by mechanism of injury were nearly identical. Patients with severe BD who were resuscitated using the MTP, however, experienced a substantial increase in survival compared with pre-DCR counterparts. CONCLUSION: Despite limited adoption of formal DCR, overall survival after injury, stratified by BD, is identical in the modern era. Patients with severely deranged physiology, however, experience better outcomes. BD remains a consistent predictor of mortality after traumatic injury. Predicted survival depends more on the energy level of the injury (stab wound vs. nonstab wound) than the mechanism of injury (blunt vs. penetrating).

The effects of protocolized use of recombinant factor VIIa within a massive transfusion protocol in a civilian level I trauma center.

Despite conflicting data regarding its effectiveness, many massive transfusion protocols (MTPs) include recombinant Factor VIIa (rFVIIa) as an adjunct to hemorrhage control. Over a 3-year period, outcome data for massively transfused patients was compared based on administration of rFVIIa as part of a mature MTP. Of 228 MTP activations, 117 patients were candidates for rFVIIa, and, of these, 39 patients received rFVIIa under the MTP. Comparing patients who received rFVIIa with those who did not based on initial packed red blood cell (PRBC) transfusion requirements, there was no difference in mortality for transfusions ≤ 20 units (25 vs 24%, 24-hour; 25 vs 42%, 30-day) or 21 to 30 units (33 vs 47%, 24-hour; 55 vs 50%, 30-day). For initial requirement ≥ 30 units of PRBCs, 24-hour mortality (26 vs 64%, P = 0.02) was significantly decreased in patients that received rFVIIa (n = 19) compared with those who did not (n = 17). These mortality differences were not maintained at 30 days (68 vs 71%). rFVIIa had minimal clinical impact on outcomes for patients requiring less than 30 units of PRBCs. For patients transfused more than 30 units of PRBCs, differences in 24-hour and 30-day mortality suggest that rFVIIa converted early deaths from exsanguination to late deaths from multiorgan failure.

A decade's experience with balloon catheter tamponade for the emergency control of hemorrhage.

BACKGROUND: Balloon catheter tamponade is a valuable technique for arresting exsanguinating hemorrhage. Indications include (1) inaccessible major vascular injuries, (2) large cardiac injuries, and (3) deep solid organ parenchymal bleeding. Published literature is limited to small case series. The primary goal was to review a recent experience with balloon catheter use for emergency tamponade in a civilian trauma population. METHODS: All patients requiring emergency use of a balloon catheter to tamponade exsanguinating hemorrhage (1998-2009) were included. Patient demographics, injury characteristics, technique, and outcomes were analyzed. RESULTS: Of the 44 severely injured patients (82% presented with hemodynamic instability; mean base deficit=-20.4) who required balloon catheter tamponade, 23 of the balloons (52%) remained indwelling for more than 6 hours. Overall mortality depended on the site of injury/catheter placement and indwelling time (81% if <6 hours; 52% if ≥6 hours; p<0.05). Physiologic exhaustion was responsible for 76% of deaths in patients with short-term balloons. Mortality among patients with prolonged balloon catheter placement was 11%, 50%, and 88% for liver, abdominal vascular, and facial/pharyngeal injuries, respectively. Mean indwelling times for iliac, liver, and carotid injuries were 31 hours, 53 hours, and 78 hours, respectively. Overall survival rates were 67% (liver), 67% (extremity vascular), 50% (abdominal vascular), 38% (cardiac), and 8% (face). Techniques included Foley, Fogarty, Blakemore, and/or Penrose drains with concurrent red rubber Robinson catheters. Initial tamponade of bleeding structures was successful in 93% of patients. CONCLUSIONS: Balloon catheter tamponade can be used in multiple anatomic regions and for variable patterns of injury to arrest ongoing hemorrhage. Placement for central hepatic gunshot wounds is particularly useful. This technique remains a valuable tool in a surgeon's armamentarium.

CD4 count is predictive of outcome in HIV-positive patients undergoing abdominal operations.

BACKGROUND: The impact of immune status and surgical outcome in patients with HIV and acquired immunodeficiency syndrome (AIDS) remains unknown. METHODS: Clinical variables of HIV/AIDS patients undergoing abdominal surgery were examined for their impact on outcome. RESULTS: Major abdominal procedures were performed in 77 patients with a diagnosis of HIV/AIDS (55 males, mean age 41.1 years, mean CD4 count 210 mg/dL). A majority of operations (53%) were performed on an urgent basis. Patients undergoing urgent procedures had lower CD4 counts (129 ± 121 vs 303 ± 324, P = .002). The mean CD4 count was lower for patients with complications (146 ± 156 vs 288 ± 319, P = .013) and for those who died (112 ± 113 vs 251 ± 283, P = .026). On multivariate analysis, CD4 count was independently associated with an increased risk for complication, and urgent operation was associated with an increased risk for mortality. CONCLUSION: Patients with HIV/AIDS who had lower CD4 counts were more likely to require an urgent operation and experience a complication with increased mortality.

The impact of country and culture on end-of-life care for injured patients: results from an international survey.

BACKGROUND: Up to 20% of all trauma patients admitted to an intensive care unit die from their injuries. End-of-life decision making is a variable process that involves prognosis, predicted functional outcomes, personal beliefs, institutional resources, societal norms, and clinician experience. The goal of this study was to better understand end-of-life processes after major injury by comparing clinician viewpoints from various countries and cultures. METHODS: A clinician-based, 38-question international survey was used to characterize the impacts of medical, religious, social, and system factors on end-of-life care after trauma. RESULTS: A total of 419 clinicians from the United States (49%), Canada (19%), South Africa (11%), Europe (9%), Asia (8%), and Australasia (4%) completed the survey. In America, the admitting surgeon guided most end-of-life decisions (51%), when compared with all other countries (0-27%). The practice structure of American respondents also varied from other regions. Formal medical futility laws are rarely available (14-38%). Ethical consultation services are often accessible (29-98%), but rarely used (0-29%), and typically unhelpful (<30%). End-of-life decision making for patients with traumatic brain injuries varied extensively across regions with regard to the impact of patient age, Glasgow Coma Scale score, and clinician philosophy. Similar differences were observed for spinal cord injuries (age and functional level). The availability and use of "donation after cardiac death" also varied substantially between countries. CONCLUSIONS: In this unique study, geographic differences in religion, practice composition, decision-maker viewpoint, and institutional resources resulted in significant variation in end-of-life care after injury. These disparities reflect competing concepts (patient autonomy, distributive justice, and religion).

Occult pneumothoraces in patients with penetrating trauma: Does mechanism matter?

BACKGROUND: Supine anteroposterior (AP) chest radiography is an insensitive test for detecting posttraumatic pneumothoraces (PTXs). Computed tomography (CT) often identifies occult pneumothoraces (OPTXs) not diagnosed by chest radiography. All previous literature describes the epidemiology of OPTX in patients with blunt polytrauma. Our goal was to identify the frequency of OPTXs in patients with penetrating trauma. METHODS: All patients with penetrating trauma admitted over a 10-year period to Grady Memorial Hospital with a PTX were identified. We reviewed patients' thoracoabdominal CT scans and corresponding chest radiographs. RESULTS: Records for 1121 (20%) patients with a PTX (penetrating mechanism) were audited; CT imaging was available for 146 (13%) patients. Of these, 127 (87%) had undergone upright chest radiography. The remainder (19 patients) had a supine AP chest radiograph. Fifteen (79%) of the PTXs detected on supine AP chest radiographs were occult. Only 10 (8%) were occult when an upright chest radiograph was used (p < 0.001). Posttraumatic PTXs were occult on chest radiographs in 17% (25/146) of patients. Fourteen (56%) patients with OPTXs underwent tube thoracostomy, compared with 95% (115/121) of patients with overt PTXs (p < 0.001). CONCLUSION: Up to 17% of all PTXs in patients injured by penetrating mechanisms will be missed by standard trauma chest radiographs. This increases to nearly 80% with supine AP chest radiographs. Upright chest radiography detects 92% of all PTXs and is available to most patients without spinal trauma. The frequency of tube thoracostomy use in patients with overt PTXs is significantly higher than for OPTXs in blunt and penetrating trauma.

Thoracic needle decompression for tension pneumothorax: clinical correlation with catheter length.

BACKGROUND: Tension pneumothorax requires emergent decompression. Unfortunately, some needle thoracostomies (NTs) are unsuccessful because of insufficient catheter length. All previous studies have used thickness of the chest wall (based on cadaver studies, ultrasonography or computed tomography [CT]) to extrapolate probable catheter effectiveness. The objective of this clinical study was to identify the frequency of NT failure with various catheter lengths. METHODS: We evaluated the records of all patients with severe blunt injury who had a prehospital NT before arrival at a level-1 trauma centre over a 48-month period. Patients were divided into 2 groups: helicopter (4.5-cm catheter sheath) and ground ambulance (3.2 cm) transport. Success of the NT was confirmed by the absence of a large pneumothorax on subsequent thoracic ultrasonography and CT. RESULTS: Needle thoracostomy decompression was attempted in 1.5% (142/9689) of patients. Among patients with blunt injuries, the incidence was 1.4% (101/7073). Patients transported by helicopter (74%) received a 4.5-cm sheath. The remainder (26% ground transport) received a 3.2-cm catheter. A minority in each group (helicopter 15%, ground 28%) underwent immediate chest tube insertion (before thoracic ultrasound) because of ongoing hemodynamic instability. Failure to decompress the pleural space by NT was observed via ultrasound and/or CT in 65% (17/26) of attempts with a 3.2-cm catheter, compared with only 4% (3/75) of attempts with a 4.5-cm catheter (p < 0.001). CONCLUSION: Tension pneumothorax decompression using a 3.2-cm catheter was unsuccessful in up to 65% of cases. When a larger 4.5-cm catheter was used, fewer procedures (4%) failed. Thoracic ultrasonography can be used to confirm NT placement.