George H. Rodman

Prospective Study of Blunt Aortic Injury: Multicenter Trial of the American Association for the Surgery of Trauma

BACKGROUND Blunt aortic injury is a major cause of death from blunt trauma. Evolution of diagnostic techniques and methods of operative repair have altered the management and posed new questions in recent years. METHODS This study was a prospectively conducted multi-center trial involving 50 trauma centers in North America under the direction of the Multi-institutional Trial Committee of the American Association for the Surgery of Trauma. RESULTS There were 274 blunt aortic injury cases studied over 2.5 years, of which 81% were caused by automobile crashes. Chest computed tomography and transesophageal echocardiography were applied in 88 and 30 cases, respectively, and were 75 and 80% diagnostic, respectively. Two hundred seven stable patients underwent planned thoracotomy and repair. Clamp and sew technique was used in 73 (35%) and bypass techniques in 134 (65%). Overall mortality was 31%, with 63% of deaths being attributable to aortic rupture; mortality was not affected by method of repair. Paraplegia occurred postoperatively in 8.7%. Logistic regression analysis demonstrated clamp and sew (p = 0.002) and aortic cross clamp time of > or = 30 minutes (p = 0.01) to be associated with development of postoperative paraplegia. CONCLUSIONS Rupture after hospital admission remains a major problem. Although newer diagnostic techniques are being applied, at this time aortography remains the diagnostic standard. Aortic cross clamp time beyond 30 minutes was associated with paraplegia; bypass techniques, which provide distal aortic perfusion, produced significantly lower paraplegia rates than the clamp and sew approach.

Surgical cricothyroidotomy in trauma patients: analysis of its use by paramedics in the field.

OBJECTIVE To analyze the indications for and the success rate, complications, and neurologic outcomes of surgical cricothyroidotomy when performed in the field by ambulance paramedics. METHODS The ambulance and hospital records of all trauma patients on whom a surgical cricothyroidotomy was attempted in the field by ambulance paramedics over a 5-year period were reviewed. A telephone survey of survivors was used to assess long-term complications and neurologic outcome. RESULTS Surgical cricothyroidotomy was attempted on 50 patients, or 9.8% of those requiring definitive airway control. The most common indications were clenched teeth, blood or vomit obscuring visualization of the upper airway, severe maxillofacial injuries, and inaccessibility because the patient was trapped. Airway establishment was successful in 47 patients (94%). Major complications occurred in 2 patients (4%), where inadvertent dislodgement of the tube developed, requiring replacement. No patient developed significant subglottic stenosis. Nineteen patients (38%) survived and no patient died because of an inadequate airway. Evaluation of neurologic outcome revealed 12 patients (63%) with no significant deficits, 3 (16%) with moderate disability, 2 (10%) with severe disability, and only 2 in a persistent vegetative state. CONCLUSIONS Surgical cricothyroidotomy can be performed on the critically injured patient in the field by ambulance paramedics with a high success rate and a low complication rate. The use of surgical cricothyroidotomy should be included in airway protocols for well-trained, ambulance Advanced Life Support paramedics.

Femur fractures in chest-injured patients : Is reaming contraindicated?

OBJECTIVE To determine if reamed femoral intramedullary nailing increases the pulmonary complications seen in chest-injured patients. DESIGN Retrospective review of prospectively collected trauma database data from January 1991 to October 1994. SETTING Methodist Hospital, Indianapolis, Indiana, Level I Trauma Center. PATIENTS Group I: Chest-injured patients [chest Abbreviated Injury Score (AIS) > or = 2] without femur or tibia fractures. Group II: Chest-injured patients (chest AIS > or = 2) with femoral reamed intramedullary fixation. Group III: Chest-injured patients (chest AIS > or = 2) with femoral shaft fixation using nonreamed fixation (rush rods, plating, or external fixation). Group IV: Non-chest-injured patients (chest AIS < 2) with femoral reamed intramedullary fixation. MAIN OUTCOME MEASUREMENT/HYPOTHESIS: Reamed femoral intramedullary nailing does not alter pulmonary outcomes, even in chest-injured patients. RESULTS Groups I and II had a very similar incidence of adult respiratory distress syndrome (ARDS), pneumonia, and number of ventilator days. Group III had a significantly higher incidence of ARDS and number of ventilator days than did Group I or II. Group III did not have a chest AIS score significantly different than Groups I and II. Group II had significantly higher ARDS and more ventilator days than did Group IV when only analyzing raw data. When injury severity was adjusted, there were no significant differences in pulmonary outcomes. CONCLUSION Reamed intramedullary femoral fixation did not increase pulmonary morbidity in chest-injured patients.

Outcome of self-inflicted gunshot wounds of the brain

A consecutive series of 67 patients who had sustained self-inflicted gunshot wounds of the brain was reviewed retrospectively to evaluate factors determining outcome. Weapon caliber, site of bullet entry, degree of brain wounding on computerized tomographic scan, and presenting Glasgow Coma Scale (GCS) score were examined. Overall mortality, degree of disability in survivors, and survival time after injury in fatally wounded patients were assessed. Ninety-eight percent of all patients with an initial GCS score of 8 or less died. When the GCS score was more than 8, 91% of patients survived (P less than .0001). Survival rate was significantly increased in patients with injury limited to one lobe of the brain, compared with patients with brain wounds of greater severity demonstrated on computerized tomographic scan (P less than .05), while a missile crossing both vertical anatomic planes of the brain or coming to rest in the posterior fossa was lethal in 100% of cases. Survivors scored relatively well on the Glasgow Outcome Scale. Almost all (98%) fatally injured patients maintained vital functions for a time ample for transportation and evaluation at a major referral center. These findings hold important implications for trauma center and critical care resource allocation as well as organ transplantation programs.

Rupture of the Distal Thoracic Esophagus following Blunt Trauma: Case Report

Rupture of the distal thoracic esophagus is an unusual injury following blunt abdominal trauma. We recently encountered this injury in a patient following a relatively minor motor vehicle accident. An improperly positioned seatbelt was presumed contributory in this case. Prevention of further contamination and drainage of infection are primary objectives. Wide mediastinal drainage with repair, resection, or diversion are recommended, depending on the degree of mediastinitis present.

Financial analysis of an inner-city helicopter service: Charges versus collections

Trauma centers are now being perceived as financial burdens because of recent changes in trauma reimbursement for the Medicare Prospective Payment System population and the perception that collection rates are lower among trauma patients. We examined the demographic and clinical factors associated with the collection experience in a series of 114 trauma patients transferred by helicopter from the accident site to an inner-city trauma center. Factors affecting payment at 30, 60, 90, and 180 days included patient age, insurance class, and discharge status. While not as high as the collection rate for the facility as a whole, we found an average 71.2% collection rate for trauma patients at 180 days. As long as trauma reimbursement continues to be cost based for nonMedicare patients, collection rates remain an important consideration in determining the financial viability of trauma centers.

An analysis of reimbursement for outpatient medical care in an urban hospital emergency department

The investigators examined the demographic and clinical factors associated with the collection experience in a series of 786 patients who were treated in an urban hospital emergency department (ED) but not admitted to the hospital. They found that 57% of the total net charge of

Inadequate respiratory support in head injury patients

150,489 had been paid within 180 days. This rate can be compared with an average inpatient collection rate of 85% at 180 days. Seven factors were found to account for the collection rate variation, making up 38.4% of the total variation. Age, gender, primary diagnosis, season of visit, time of arrival, and residence were not found to be main contributors. Insufficient collection rates may be an indication that EDs increasingly are becoming a financial risk to hospitals. The hospitals collection experience will become more important as an indicator of financial risk if the costs of operating EDs continue to escalate and collection rates do not improve. Both the costs of providing a service and the amount of the charge actually collected are valid concerns to those operating EDs.

Diaspirin cross-linked hemoglobin (DCLHb) in the treatment of severe traumatic hemorrhagic shock : A randomized controlled efficacy trial

Hyperventilation with 100% inspired oxygen is standard practice in victims of head trauma and is directed at both reduction of intracranial pressure and ensuring adequate oxygenation. Previous studies have established that medical care providers are inconsistent in maintaining respiratory rate and depth of ventilation with a bag valve device (BVD), producing both respiratory alkalosis and acidosis. A retrospective review of arterial blood gases of 160 trauma patients who were intubated and hyperventilated with BVD during transport from the scene or referring hospital revealed that 98.7% were adequately oxygenated on arrival in the emergency department (ED). Only 53.8% were both adequately oxygenated and appropriately hyperventilated. Inadequate hyperventilation (38%) and over-ventilation (6.9%) occurred more frequently than hypoxia unaccompanied by a ventilatory change (1.3%). The authors conclude that even with the most skilled of emergency care providers, inappropriate ventilation occurred in almost half (45%) of the patients with uncontrolled BVD ventilation during transport to the ED. Future studies are needed to explore alternative strategies that ensure prehospital ventilation.