Ronald P. Fischer

Diagnostic peritoneal lavage: Fourteen years and 2,586 patients later☆☆☆

During a fourteen year period, diagnostic peritoneal lavage was 98.5 per cent accurate in determining the presence or absence of blunt intraabdominal injuries among 2,586 patients. Of these, 69.4 per cent had a negative lavage and 29.2 per cent a positive lavage. Six patients (0.2 per cent) had a false-positive lavage. Thirty-two patients (1.2 per cent) had a false-negative lavage; however, all but one of these patients underwent exploratory laparotomy on the basis of clinical acumen or other diagnostic tests.

The significance of scapular fractures.

Scapular fractures in the multiply injured patient have received little attention. Fifty-six patients with 58 scapular fractures secondary to blunt trauma were reviewed. The patients averaged 3.9 major injuries excluding their scapular fractures. The injury pattern associated with blunt scapular fracture is unique. Patients with scapular fracture have a high incidence of injury to the ipsilateral lung and chest wall and to the ipsilateral shoulder girdle and its contained structures: rib fractures, 53.6%; pulmonary contusions, 53.6%; clavicular fracture, 26.8%; brachial plexus injury, 12.5%; subclavian, brachial, or axillary artery injury, 10.7%. Eight patients died (14.3%). Although no patient died from the scapular fracture, half of the deaths in this series were the result of pulmonary sepsis arising in an associated ipsilateral pulmonary contusion. Scapular fractures provide the trauma surgeon with a reliable clinical clue that the patient is at inordinate risk to have associated injuries of major consequence to the ipsilateral lung and chest wall, the ipsilateral shoulder girdle, and the ipsilateral subclavian, axillary, or brachial artery.

The natural history of electrical injury.

The natural history of electrical injury, exclusive of electrical flash burns, was determined in 64 patients. These patients sustained relatively small burns (x=11%); only nine patients (14%) had burns greater than 25%. Forty-six patients suffered 114 major complications. EKG abnormalities occurred in 36%, including major cardiac arrhythmias in ten patients. One-fourth of the patients developed neurologic sequelae (CNS-8, peripheral-8). Electrical vascular injury with subsequent arterial occlusion was responsible for many of the major amputations. Nineteen patients required 32 amputations (digits-17, hand-1, foot-2, leg-3, arm-9). Early patient referral and vigorous fluid resuscitation minimized renal failure (1.5%) and mortality (3.1%). Early fasciotomy and vigorous debridement appeared to decrease wound sepsis (8%), but apparently had little if any effect on major limb salvage. The unsolved problems of electrical injury, namely neurological and vascular sequelae, are major contributors to the high morbidity of electrical injury.

Major injury as a unique opportunity to initiate treatment in the alcoholic

A prospective study was performed on the use of a standard outpatient intervention technique to induce inpatient alcoholic trauma patients into accepting alcoholism treatment. Interventions were performed on 17 trauma patients. All patients who underwent intervention accepted treatment and were immediately transferred to a 28-day inpatient treatment facility. Alcoholic trauma patients are highly susceptible to intervention for their disease. We found that intervention performed upon discharge from the trauma service successfully initiates alcoholism treatment.

Mucormycosis in trauma patients.

Cutaneous mucormycosis is a rare but often fatal infection in trauma patients. We retrospectively reviewed a 9-year experience with mucormycosis among injured patients. Eleven patients had biopsy- or culture-proven mucormycosis. Nine patients were victims of blunt trauma, two patients had burns measuring greater than 50% TBSA. No patient was at increased risk because of underlying disease or immunosuppression prior to injury. All 11 patients had open wounds on admission. Four patients died of mucormycosis. All nonsurvivors had phycomycotic gangrenous cellulitis of the head, the trunk, or both. In contrast, survivors had involvement of only the extremities. Because of underlying disease, contaminating wounds, antibiotic use, or immunocompromise secondary to shock and sepsis, trauma patients are at risk of developing mucormycosis. To successfully treat mucormycosis, diagnosis must be prompt and accompanied by aggressive debridement and parenteral administration of amphotericin B.

The inadequacy of peritoneal lavage in diagnosing acute diaphragmatic rupture.

Thirty-eight patients with acute diaphragmatic rupture secondary to blunt trauma have been reviewed. Peritoneal lavage is diagnostically inexact in patients with diaphragmatic rupture. One-fourth of the patients had falsely negative peritoneal lavages during their initial evaluation. All four patients without associated intra-abdominal injuries had falsely negative peritoneal lavages, as did four of 30 patients (13%) with significantly associated intra-abdominal injuries. We conclude from these data that: 1) peritoneal lavage is falsely negative in patients with isolated diaphragmatic rupture; 2) positive peritoneal lavage in patients with diaphragmatic rupture results from associated intra-abdominal injuries; and 3) peritoneal lavage may be falsely negative despite significant intra-abdominal injuries; because of herniation of injured organ(s) into the thoracic cavity, thus bleeding is excluded from the peritoneal cavity.

Urgent thoracotomy for pulmonary or tracheobronchial injury.

Three hundred eighty-eight of 7,283 (5.3%) admitted trauma patients underwent urgent thoracotomy. In 61 patients (15.7%), pulmonary or tracheobronchial injury prompted thoracotomy (11, blunt; 50, penetrating). Pulmonary hemorrhage necessitated thoracotomy in 54 patients (88.5%); tracheobronchial injury in five patients (8.2%). The mortality was 27.9%. Nine patients (14.8%) underwent pneumonectomy: eight died of intractable hemorrhagic shock during thoracotomy despite rapid control of pulmonary hemorrhage: one died of sepsis. Eleven patients (18.0%) underwent lobectomy: six (54.5%) died of concomitant injuries. Thirty-six patients (59.0%) underwent pneumonorrhaphy: one died of concomitant injuries. Five (8.2%) patients underwent tracheobronchial repair: one died of concomitant injuries. Pneumonectomy was uniformly fatal and should be a procedure of last resort in the treatment of pulmonary injury, as lobectomy and pneumonorraphy are better tolerated by these critically ill patients.

The efficacy of magnetic resonance cholangiography for the evaluation of patients with suspected choledocholithiasis before laparoscopic cholecystectomy

BACKGROUND Endoscopic retrograde cholangiography is the most commonly utilized tool for the identification of common bile duct stones (CBDS) before laparoscopic cholecystectomy, whereas the role of magnetic resonance cholangiography (MRC) for patient evaluation before laparoscopic cholecystectomy is currently undefined. METHODS We prospectively evaluated the efficacy of MRC for the identification of CBDS among patients with high risk for choledocholithiasis. Patient selection was based on clinical, sonographic, and laboratory criteria. Standard cholangiograms were obtained when possible for verification of MRC results. RESULTS Ninety-nine patients underwent evaluation with preoperative MRC. CBDS was visualized in 30% of patients. MRC sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 85%, 90%, 77%, 94%, and 89%, respectively. CONCLUSIONS MRC is useful for the evaluation of patients with suspected choledocholithiasis. Advantages of MRC include its noninvasive nature, ease of application, and accuracy in identifying and estimating the size of CBDS. Application of MRC in this setting reduces the need for diagnostic endoscopic retrograde cholangiography. Future investigations should be directed at the development of cost-effective utilization strategies for MRC application.

Urban helicopter response to the scene of injury

Metropolitan Houston with a population of four million has the nations poorest freeway system. Its two Level I trauma centers are adjacent within a centrally located freeway loop, therefore the city is ideally suited for a trauma scene helicopter transport service. During 1981 there were 577 flights to the scene of injury (blunt, 466; penetrating, 111). Flights were requested by 60 agencies (EMS, law enforcement, etc.). All flights were manned by a surgical resident and flight nurse. The flight distances ranged from 2 to 57 miles (average, 14.4). Three hundred six flights (53%) were within the city, including 59 (10.2%) within the freeway loop. In approximately one half of the flights, the initial responding EMS unit was a paramedic unit. The average time at the scene was 28 minutes. The overall mortality for trauma scene flights was 35.7% (206/577). Eighty-nine patients (15.1%) died at the scene and were not transported (initial median scene Trauma Score, 2). The mortality among transported patients was 24.0% (117/488). Twenty-nine patients died during attempted emergency-center resuscitation (initial median scene Trauma Score, 5). Eight-eight patients died after hospital admission (initial median scene Trauma Score, 10). Only 27 patients (5.5%) did not require hospitalization. Scene treatment (intubation, hyperventilation and, when appropriate, mannitol administration) was routinely initiated for patients with severe head injuries. Two hundred seventy-nine patients required cardiopulmonary resuscitation, tracheal intubation, chest-tube placement, or other invasive procedures. Based upon these resuscitative efforts and invasive procedures, a physician in attendance was deemed medically desirable for one half of the flights.(ABSTRACT TRUNCATED AT 250 WORDS)

Major vascular injuries secondary to pelvic fractures: An unsolved clinical problem

Twelve patients sustained sixteen pelvic fracture-related iliac and femoral arterial (5) and venous (11) injuries. Death was due in large part to delays in recognition and direct operative control of the major vascular disruption. Prompt operative exploration of all pedestrians admitted in hemorrhagic shock will open pelvic fractures characterized by a double break in the pelvic ring should reduce the 83 per cent mortality currently associated with this combination of injuries.