Upper Extremity Deep Venous Thrombosis Risk Factors, Associated Morbidity and Mortality in Trauma Patients.

BACKGROUND: The literature on upper extremity deep venous thrombosis (UEDVT) is not as abundant as that on lower extremities. This study aimed to identify the risk factors for UEDVT, associated mortality and morbidity in trauma patients and the impact of pharmacological prophylaxis therein. METHODS: A 3-year retrospective review of patients admitted to a Level 1 trauma center was conducted. Patients aged 18 years or older who had experienced a traumatic event and had undergone an upper extremity ultrasound (UEUS) were included in the study. Multiple logistic regression was used to identify independent risk factors that contributed to UEDVT. RESULTS: A total of 6,607 patients were admitted due to traumatic injuries during the study period, of whom 5.6% (373) had at least one UEUS during their hospitalization. Fifty-six (15%) were diagnosed with an UEDVT, as well as three non-fatal pulmonary emboli (PE) and four (7.1%) deaths, p = 0.03. Pharmacological prophylaxis with low-molecular-weight heparin (LMWH) or unfractionated heparin showed a protective effect against UEDVT; among the patients positive for UEDVT, 14 of 186 patients (7.5%) received LMWH, while 42 of 195 (21.5%) did not receive LMWH (p < 0.001). Multiple logistic regression revealed that the presence of upper extremity fractures, peripherally inserted central catheter (PICC) lines, and traumatic brain injury (TBI) were independent risk factors for UEDVT. CONCLUSIONS: UEDVT are associated with a higher mortality. The presence of upper extremity fractures, PICC lines, and TBI were independent risk factors for UEDVTs. Further, pharmacological prophylaxis reduces the risk of UEDVT.

The Emergency Surgery Score accurately predicts the need for postdischarge respiratory and renal support after emergent laparotomies: A prospective EAST multicenter study.

BACKGROUND: The Emergency Surgery Score (ESS) was recently validated as an accurate mortality risk calculator for emergency general surgery. We sought to prospectively evaluate whether ESS can predict the need for respiratory and/or renal support (RRS) at discharge after emergent laparotomies (EL). METHODS: This is a post hoc analysis of a 19-center prospective observational study. Between April 2018 and June 2019, all adult patients undergoing EL were enrolled. Preoperative, intraoperative, and postoperative variables were systematically collected. In this analysis, patients were excluded if they died during the index hospitalization, were discharged to hospice, or transferred to other hospitals. A composite variable, the need for RRS, was defined as the need for one or more of the following at hospital discharge: tracheostomy, ventilator dependence, or dialysis. Emergency Surgery Score was calculated for all patients, and the correlation between ESS and RRS was examined using the c-statistics method. RESULTS: From a total of 1,649 patients, 1,347 were included. Median age was 60 years, 49.4% were men, and 70.9% were White. The most common diagnoses were hollow viscus organ perforation (28.1%) and small bowel obstruction (24.5%); 87 patients (6.5%) had a need for RRS (4.7% tracheostomy, 2.7% dialysis, and 1.3% ventilator dependence). Emergency Surgery Score predicted the need for RRS in a stepwise fashion; for example, 0.7%, 26.2%, and 85.7% of patients required RRS at an ESS of 2, 12, and 16, respectively. The c-statistics for the need for RRS, the need for tracheostomy, ventilator dependence, or dialysis at discharge were 0.84, 0.82, 0.79, and 0.88, respectively. CONCLUSION: Emergency Surgery Score accurately predicts the need for RRS at discharge in EL patients and could be used for preoperative patient counseling and for quality of care benchmarking. LEVEL OF EVIDENCE: Prognostic and epidemiological, level III.

The emergency surgery score (ESS) and outcomes in elderly patients undergoing emergency laparotomy: A post-hoc analysis of an EAST multicenter study.

INTRODUCTION: We sought to evaluate whether the Emergency Surgery Score (ESS) can accurately predict outcomes in elderly patients undergoing emergent laparotomy (EL). METHODS: This is a post-hoc analysis of an EAST multicenter study. Between April 2018 and June 2019, all adult patients undergoing EL in 19 participating hospitals were prospectively enrolled, and ESS was calculated for each patient. Using the c-statistic, the correlation between ESS and mortality, morbidity, and need for ICU admission was assessed in three patient age cohorts (65-74, 75-84, ≥85 years old). RESULTS: 715 patients were included, of which 52% were 65-74, 34% were 75-84, and 14% were ≥85 years old; 51% were female, and 77% were white. ESS strongly correlated with postoperative mortality (c-statistic:0.81). Mortality gradually increased from 0% to 20%-60% at ESS of 2, 10 and 16 points, respectively. ESS predicted mortality, morbidity, and need for ICU best in patients 65-74 years old (c-statistic:0.81, 0.75, 0.83 respectively), but its performance significantly decreased in patients ≥85 years (c-statistic:0.72, 0.64, 0.67 respectively). CONCLUSION: ESS is an accurate predictor of outcome in the elderly EL patient 65-85 years old, but its performance decreases for patients ≥85. Consideration should be given to modify ESS to better predict outcomes in the very elderly patient population.

Prospective validation of the Emergency Surgery Score in emergency general surgery: An Eastern Association for the Surgery of Trauma multicenter study.

BACKGROUND: The Emergency Surgery Score (ESS) was recently developed and retrospectively validated as an accurate mortality risk calculator for emergency general surgery. We sought to prospectively validate ESS, specifically in the high-risk nontrauma emergency laparotomy (EL) patient. METHODS: This is an Eastern Association for the Surgery of Trauma multicenter prospective observational study. Between April 2018 and June 2019, 19 centers enrolled all adults (aged >18 years) undergoing EL. Preoperative, intraoperative, and postoperative variables were prospectively and systematically collected. Emergency Surgery Score was calculated for each patient and validated using c-statistic methodology by correlating it with three postoperative outcomes: (1) 30-day mortality, (2) 30-day complications (e.g., respiratory/renal failure, infection), and (3) postoperative intensive care unit (ICU) admission. RESULTS: A total of 1,649 patients were included. The mean age was 60.5 years, 50.3% were female, and 71.4% were white. The mean ESS was 6, and the most common indication for EL was hollow viscus perforation. The 30-day mortality and complication rates were 14.8% and 53.3%; 57.0% of patients required ICU admission. Emergency Surgery Score gradually and accurately predicted 30-day mortality; 3.5%, 50.0%, and 85.7% of patients with ESS of 3, 12, and 17 died after surgery, respectively, with a c-statistic of 0.84. Similarly, ESS gradually and accurately predicted complications; 21.0%, 57.1%, and 88.9% of patients with ESS of 1, 6, and 13 developed postoperative complications, with a c-statistic of 0.74. Emergency Surgery Score also accurately predicted which patients required intensive care unit admission (c-statistic, 0.80). CONCLUSION: This is the first prospective multicenter study to validate ESS as an accurate predictor of outcome in the EL patient. Emergency Surgery Score can prove useful for (1) perioperative patient and family counseling, (2) triaging patients to the intensive care unit, and (3) benchmarking the quality of emergency general surgery care. LEVEL OF EVIDENCE: Prognostic study, level III.

The prevalence of positive drug and alcohol screens in elderly trauma patients.

BACKGROUND: Alcohol and drug abuse are recognized to be significantly prevalent in trauma patients, and are frequent harbingers of injury. The incidence of substance abuse in elderly trauma patients has, however, been limitedly examined. The authors sought to identify the spectrum of positive alcohol and drug toxicology screens in patients ≥65 years admitted to a Level I trauma center. METHODS: Patients ≥65 years old admitted to an American College of Surgeons (ACS) Level I trauma center over a 60--month period were identified from the trauma registry. Demographic data, blood alcohol content (BAC), and urine drug screen (UDS) results at admission were obtained and analyzed. The positive results were compared with individuals below 65 years in different substance categories using Fisher's exact test. RESULTS: In the 5-year period studied, of the 4139 patients ≥65 years, 1302 (31.5%) underwent toxicological substance screening. A positive BAC was present in 11.1% of these patients and a positive UDS in 48.3%. The mean BAC level in those tested was 163 mg/dL and 69% of patients had a level >80 mg/dL. CONCLUSIONS: These data show that alcohol and drug abuse are an issue in patients ≥65 years in our institution, though not as pervasive a problem as in younger populations. Admission toxicology screens, however, are important as an aid to identify geriatric individuals who may require intervention.

Complications arising from splenic artery embolization: a review of an 11-year experience.

BACKGROUND: Splenic artery embolization (SAE) is a staple adjunct in the management of blunt splenic trauma. We examined complications of SAE over an 11-year period. METHODS: Patients who underwent SAE were identified. Demographic data and the location of the SAE-proximal, distal, or combined-were noted. Major and minor complications were identified. RESULTS: Of 1,383 patients with blunt splenic trauma, 298 (21.5%) underwent operative management, and 1,085 (78.5%) underwent nonoperative management (NOM). SAE was performed in 8.1% of the NOM group. Major complications which occurred in 14% of patients, included splenic abscesses, infarction, cysts, and contrast-induced renal insufficiency. Three-fourths of patients with major complications underwent distal embolization. There were more complications in patients who underwent distal embolization (24% distal vs 6% proximal alone; P = .02). Minor complications, which occurred in 34% of patients, included left-sided pleural effusions, coil migration, and fever. CONCLUSIONS: SAE is a useful tool for managing splenic injuries. Major and minor complications can occur. Distal embolization is associated with more major complications.

Is routine tube thoracostomy necessary after prehospital needle decompression for tension pneumothorax?

BACKGROUND: Thoracic needle decompression is lifesaving in tension pneumothorax. However, performance of subsequent tube thoracostomy is questioned. The needle may not enter the chest, or the diagnosis may be wrong. The aim of this study was to test the hypothesis that routine tube thoracostomy is not required. METHODS: A prospective 2-year study of patients aged ≥18 years with thoracic trauma was conducted at a level 1 trauma center. RESULTS: Forty-one patients with chest trauma, 12 penetrating and 29 blunt, had 47 needled hemithoraces for evaluation; 85% of hemithoraces required tube thoracostomy after needle decompression of the chest (34 of 41 patients [83%]). CONCLUSIONS: Patients undergoing needle decompression who do not require placement of thoracostomy for clinical indications may be assessed using chest radiography, but thoracic computed tomography is more accurate. Air or blood on chest radiography or computed tomography of the chest is an indication for tube thoracostomy.

Comparison of hemodynamic measurements from invasive and noninvasive monitoring during early resuscitation.

BACKGROUND: Measurements obtained from the insertion of a pulmonary artery catheter (PAC) in critically ill and/or injured patients have traditionally assisted with resuscitation efforts. However, with the recent utilization of ultrasound in the intensive care unit setting, transthoracic echocardiography (TTE) has gained popularity. The purpose of this study is to compare serial PAC and TTE measurements and document levels of serum biomarkers during resuscitation. METHODS: Over a 25-month period, critically ill and/or injured patients admitted to a Level I adult trauma center were enrolled in this 48-hour intensive care unit study. Serial PAC and TTE measurements were obtained every 12 hours (total = 5 points/patient). Serial levels of lactate, Δ base, troponin-1, and B-type natriuretic peptide were obtained. Pearson correlation coefficient and intraclass correlation (ICC) assessed relationship and agreement, respectively, between PAC and TTE measures of cardiac output (CO) and stroke volume (SV). Analysis of variance with post hoc pairwise determined differences over time. RESULTS: Of the 29 patients, 69% were male, with a mean age of 47.4 years ± 19.5 years and 79.3% survival. Of these, 25 of 29 were trauma with a mean Injury Severity Score of 23.5 ± 10.7. CO from PAC and TTE was significantly related (Pearson correlations, 0.57-0.64) and agreed with moderate strength (ICC, 0.66-0.70). SV from PAC and TTE was significantly related (Pearson correlations, 0.40-0.58) and agreed at a weaker level (ICC, 0.41-0.62). Tricuspid regurgitation was noted in 80% and mitral regurgitation in 50% to 60% of patients. CONCLUSION: Measurements of CO and SV were moderately strong in correlation and agreement which may suggest PAC measurements overestimate actual values. The significance of tricuspid regurgitation and mitral regurgitation during early resuscitation is unknown.

Circulating cellular and humoral elements of immune function following splenic arterial embolisation or splenectomy in trauma patients.

BACKGROUND: Splenectomy impairs the ability to combat infection, especially with encapsulated organisms. However, there is limited understanding of the impact of splenic arterial embolisation on immune function. Our hypothesis was that embolisation would not impair systemic immune function. This study examines elements of cellular and humoral immunity in patients undergoing splenic embolisation or splenectomy for trauma. PATIENTS AND METHODS: Splenic embolisation (SE) and splenectomy patients (S) were compared to blunt trauma patients without splenic injury (NS). Lymphocyte counts, natural-killer cells, serum complement (C3, C4), and properdin levels were assayed. RESULTS: No significant differences in total, helper, or suppressor T-lymphocytes, complement (C3, C4), or properdin were found. B-lymphocyte counts were higher in S (602±445cells/mm(3)) than SE (238±114cells/mm(3)) or NS (293±153cells/mm(3)) (p=.003 for pairwise comparisons). S also had more natural killer T-cells than NS (325±170cells/mm(3) vs. 174±116cells/mm(3), p=.004). CONCLUSION: Splenic embolisation does not alter the measured immunologic parameters. The absence of sensitive markers for splenic immune function limits the ability to assess the impact of embolisation for trauma.

The prevalence of incidental findings on abdominal computed tomography scans of trauma patients.

BACKGROUND: Abdominal computed tomography scanning (AbdCTS) is the standard of care in the evaluation of blunt trauma patients. The liberal use of AbdCTS coupled with advancing imaging technology often results in the detection of incidental findings. OBJECTIVES: We sought to characterize the incidence and prevalence of such findings, describe the lesions most frequently seen on AbdCTS performed on patients admitted to a Level I trauma center, and develop a plan for follow-up through our performance improvement process. METHODS: AbdCTS reports of all admissions to a Level I trauma center between January 2000 and December 2002 were reviewed. Incidental findings identified were classified into benign anatomic variants, benign pathologic lesions, and pathologic lesions requiring further work-up. RESULTS: A total of 3,113 patients were evaluated by AbdCTS during this time period. There were 1474 incidental findings in 1,103 patients. Seventy-five percent of patients with incidental lesions had no traumatic findings. Benign anatomic variants were present in 1.8%, benign pathologic findings in 27.5%, and pathologic findings requiring work-up in 6.1%. Congenital renal anomalies and duplicate inferior vena cava were the most common benign anatomical findings. Renal and hepatic cysts were the most frequent benign lesions and non-calcified pulmonary nodules and adrenal masses were the pathologic lesions most commonly seen. CONCLUSIONS: Incidental findings are seen in up to 35% of trauma AbdCTS. No concomitant traumatic injuries are present in up to 75% of these patients. Protocols for appropriate intervention or arrangements for follow-up care need to be incorporated into the care of the trauma patients.

Neurologic outcomes with cerebral oxygen monitoring in traumatic brain injury.

BACKGROUND: Optimizing cerebral oxygenation is advocated to improve outcome in head-injured patients. The purpose of this study was to compare outcomes in brain-injured patients treated with 2 types of monitors. METHODS: Patients with traumatic brain injury and a Glasgow Coma Scale score<8 were identified on admission. A polarographic cerebral oxygen/pressure monitor (Licox) or fiberoptic intracranial pressure monitor (Camino) was inserted. An evidence-based algorithm for treatment was implemented. Elements from the prehospital and emergency department records and the first 10 days of intensive care unit (ICU) care were collected. Glasgow Outcome Scores (GOS) were determined every 3 months after discharge. RESULTS: Over a 3-year period, 145 patients were entered into the study; 81 patients in the Licox group and 64 patients in the Camino group. Mortality, hospital length of stay, and ICU length of stay were equivalent in the 2 groups. More patients in the Licox group achieved a moderate/recovered GOS at 3 months than in the Camino Group (79% vs 61%; P = .09). CONCLUSION: Three-month GOS revealed a clinically meaningful 18% benefit in patients undergoing cerebral oxygen monitoring and optimization. Six-month outcomes were also better. Unfortunately, these important differences did not reach significance. Continued study of the benefits of cerebral oxygen monitoring is warranted.

Outcome of cervical near-hanging injuries.

BACKGROUND: Cervical near-hangings are not rare, but have received little attention in the trauma literature. Increasing numbers of patients received from our local jail and detention centers prompted this study. METHODS: Seventeen-year review of a level I Trauma Center Registry identified 67 patients with cervical strangulation for study. Data were analyzed using the Mann-Whitney test to evaluate continuous predictors, and Fisher's exact test for categorical predictors. RESULTS: Ten of 67 patients died (14.9% mortality). Patients having a lower Glasgow Coma Score (GCS) at the scene (3.5 +/- 1.3 vs. 8.3 +/- 5.0; p = 0.001) and lower GCS in the emergency department (ED) (3.0 +/- 0.0 vs. 9.0 +/- 5.3; p < 0.001) were more likely to die. Injuries consisted predominantly of neck abrasions and anoxic brain injuries (83% mortality). Laryngeal fractures and carotid arterial injuries were detected. No cervical spine fractures were seen, but subluxations were identified. Forty-two percent of the patients were in detention centers when the near-hanging incident occurred. CONCLUSIONS: Cervical near-hangings are referred to the Trauma Service for evaluation. Scene or ED GCS of 3 does not preclude neurologically intact survival, although mortality is high. In our study, the most useful prognostic factors were the need for airway control by intubation or cricothyrotomy, cardiopulmonary resuscitation, lower scene and ED GCS, and cerebral edema on CT Scan. Optimal evaluation includes head and neck CT and CT angiography of the neck. We plan to share these results with local authorities and encourage improvement in risk identification, with earlier involvement of mental health personnel.

Is chest x-ray an adequate screening tool for the diagnosis of blunt thoracic aortic injury?

BACKGROUND: Blunt thoracic aortic injuries (BTAI) have a high mortality rate. For survivors, chest X-ray (CXR) findings are used to determine the need for further diagnostic testing with chest computerized tomography with angiography (CTA) or conventional angiography. We set to determine the adequacy of utilizing CXR alone as a screening tool for BTAI. METHODS: All patients diagnosed with BTAI at a level I trauma-center during a 7-year-period were identified. CXRs of these patients and those of a control group of blunt trauma patients with an injury severity score >15 were reviewed by four trauma surgeons blinded to the diagnosis. Based on each CXR viewed, the surgeons decided if they would have proceeded to chest CTA, angiography, or required no further studies to rule out BTAI. RESULTS: In the 7-year-period, 83 patients had BTAI. CXRs were available in 45 patients. The four surgeons viewed 96 CXRs including those of 51 controls. Based on the CXR appearance in patients with BTAI, the surgeons chose to proceed to chest CTA in 38 patients (84.4%), conventional aortography in two patients (4.4%), and no further testing in five patients (11.2%). A widened mediastinum (75%) and loss of the aorto-pulmonary window (40%) were the most frequent CXR abnormalities. Patients with BTAI were more likely to have an abnormal CXR-40 of 45 (88.8%) patients when compared with the controls-25 of 51 (49%)patients-p < 0.001. CONCLUSIONS: Although CXR is a sensitive screening modality, it failed to identify the possibility of BTAI in 11% of patients. The liberal use of chest CTA after high speed motor vehicle crashes is recommended to minimize the incidence of missed BTAI.

Diagnosis of blunt intestinal and mesenteric injury in the era of multidetector CT technology--are results better?

BACKGROUND: Blunt Bowel and Mesenteric injuries (BBMI) can present diagnostic difficulties and are occasionally recognized in a delayed fashion. Most studies evaluating these injuries predate multidetector Computerized Tomography (CT) scan technology. We set out to analyze whether the current era of multislice CT scanning has led to changes in the incidence of missed injuries in BBMI or altered the patterns of diagnosis. METHODS: All patients with blunt small and large intestinal injury as well as mesenteric lacerations, recognized in the operating room (OR) between November 2000 and December 2006 were identified from the trauma registry. A 4 slice helical multidetector CT scanner was in use for abdominal CT scans during the first portion of the study (November 2000-July 2005) whereas a 16 slice scanner was in use in the second portion (July 2005-December 2006). Rectal injuries and serosal tears were excluded. RESULTS: Eighty-two patients were identified with BBMI. Twenty-five patients went directly to the OR for laparotomy after a positive Diagnostic Peritoneal Lavage, a positive Focused Abdominal Sonogram or other injury. Of the 57 patients who underwent CT, findings indicating possible BBMI were present in 46 patients (80.7%). These included free fluid without solid organ injury (50.9%), free air (10.5%), active mesenteric bleeding (10.5%), and bowel swelling (5.3%). Eleven patients (19.3%) had delayed bowel or mesenteric injury recognition with the diagnosis ultimately made by repeat CT or in the OR (range, 1-10 days). CONCLUSION: Missed injuries remain common in BBMI even in the current era of multislice CT scanners. Free fluid w/o solid organ injury, though not specific, continues to be an important finding. Adjuncts to CT continue to be necessary for the optimal diagnosis of bowel injuries.

Delayed closure of ventral abdominal hernias after severe trauma.

BACKGROUND: Primary closure after trauma celiotomies is not always accomplished. We reviewed our experience with delayed closure in trauma patients. METHODS: Prospective data were collected on patients who had damage-control celiotomy and were discharged with open abdomens. The time to closure, repair methods, and complication data also were compiled. RESULTS: In the 6-year period, 84 patients underwent damage-control celiotomy. Thirty-one patients died and 33 patients had early closure. Twenty patients had closure during a subsequent hospitalization (mean time to delayed closure, 193 days): 8 patients (40%) had component separation, 3 (15%) had component separation with mesh, 4 (20%) had mesh alone, and primary closure occurred in 5 (25%). Nine patients (45%) had complications such as wound and mesh infections, hernias, and fistulas. Repair before or after 6 months showed no statistically significant difference for the presence of complications or enterotomies (P = .64 and .5743, respectively). CONCLUSIONS: Open-abdomen reconstruction presents significant challenges. Closure within 6 months is possible; the presence of complications is not affected by early repair.

Radiated groin wounds: pitfalls in reconstruction.

Reconstruction procedures of soft tissue defects created after tumor excision in the ilioinguinal region which have received prior radiation therapy are associated with serious morbidities. Despite the availability of muscle or myocutaneous flaps, wound infection, wound breakdown, and necrosis occur with relative frequency. Changes in tissues secondary to radiation therapy are chronic and permanent and adversely affect wound healing. Tumors in this region should be considered for primary excision and reconstruction, followed by radiation, if necessary.

Mycobacterium kansasii causing carpal tunnel syndrome with concomitant pulmonary Mycobacterium tuberculosis infection.

Mycobacterium kansasii is an uncommon cause of infection of the hand. Other atypical mycobacteria that cause hand infections are M marinium, M avium, M intracellularis, and M chelonei. Such infections usually occur around aquatic areas, though sometimes the source of infection is elusive. Inoculation of the atypical mycobacterium into the host occurs usually from a traumatic break in the skin. Patients commonly report a history of fish tank cleaning, oyster shucking, swinuning, or other aquatic activities. Several drug regimenshave been suggested and used successfully. Surgical intervention is occasionally required for unresponsive or symptomatic cases. Concomitant hand infection and pulmonary tuberculosis is extremely rare. We present a case report of M kansasii infection of the hand and forearm, with carpal tunnel syndrome complicated by concomitant pulmonary M tuberculosis.