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PubMed2003

[Risk factors for the development of pneumonia in multiple injured patients. Results of a prospective clinical trial].

Pneumonia is the most common infectious complication in multiple trauma patients. In a prospective clinical cohort study, 266 multiply injured patients were examined for the development of pneumonia. Various risk factors were tested in uni- and multivariate analyses. Three different definitions of pneumonia were used in order to examine how results depended on definition. The incidence of pneumonia was 41%, but varied with definition (30-50%). Injuries to the thorax, head,and abdomen were associated with a significantly increased risk of pneumonia (adjusted relative risk: 1.77, 1.97,and 1.52, respectively).Furthermore, increasing age led to a higher risk of pneumonia. Although the primary analysis revealed a higher pneumonia risk in male patients (adjusted relative risk: 2.23; 95% CI: 1.43-3.05), this result could not be consistently reproduced when using other definitions of pneumonia. Trunk and head injuries and age are proven risk factors for developing posttraumatic pneumonia. The association between male gender and an increased rate of infectious complications remained questionable.

Abbreviated Injury Scale↗
PubMed1992

Rapid diagnosis of gram negative pneumonia by assay of endotoxin in bronchoalveolar lavage fluid.

BACKGROUND: Diagnosis of ventilator associated pneumonia can be made by quantitative cultures of bronchoalveolar lavage fluid or of protected specimen brushings, though cultures require 24-48 hours to provide results. In 80% of cases aerobic Gram negative bacteria are the cause. METHODS: A rapid diagnostic method of assessing the endotoxin content of lavage fluid by Limulus assay is described. Forty samples of lavage fluid were obtained from patients with multiple trauma requiring mechanical ventilation for a prolonged period. Pneumonia was diagnosed on the basis of clinical, radiological, and bacteriological findings, including quantitative cultures of lavage fluid. RESULTS: A relation was observed between the concentration of endotoxin in lavage fluid and the quantity of Gram negative bacteria. The median endotoxin content of lavage fluid in Gram negative bacterial pneumonia was 15 endotoxin units (EU)/ml; the range observed in individual patients was 6 to > 150 EU/ml. In patients with pneumonia due to Gram positive cocci and in non-infected patients the median endotoxin level was 0.17 (range < or = 0.06 to 2) EU/ml. An endotoxin level greater than or equal to 6 EU/ml distinguished patients with Gram negative bacterial pneumonia from colonised patients and from those with pneumonia due to Gram positive cocci. CONCLUSION: The measurement of endotoxin in lavage fluid is a rapid (less than two hours) and accurate diagnostic method. It should allow specific and early treatment of Gram negative bacterial pneumonia.

Bronchoalveolar Lavage Fluid↗
PubMed1989

[Use of unilateral external fixation in pediatric femur shaft fracture within the scope of polytrauma].

Femoral fractures in children are mostly managed conservatively. The recommended methods are overhead traction, 90/90 degree traction on a special table (Weber) and skeletal traction in a Thomas splint or on a Brown's frame. This treatment proves cumbersome in most multiply injured children, especially in those with head injury. Due to uncooperative behaviour the fracture is difficult to hold in an acceptable position. Therefore, operative treatment has been favoured by several authors in the past. Over a period of 8 years, 167 adolescent multiple trauma victims were treated in our institution, 48% of whom had sustained femoral fractures. Since June 1985 such fractures have been stabilized with the unilateral De Bastiani external fixator as the primary and definitive treatment. Our first series consists of ten children (eight male, two female) with a total of eleven fractures, aged 3.2-15 years, mean age 8.1 years. Nine fractures were closed and two compound. Nine fractures were fixed on the day of injury and two 2 days after injury. Depending on the patient's age and the level of the fracture, controlled overriding of 10-15 mm was performed to compensate for expected overgrowth. All fractures healed in an average time of 11 weeks. Free hip and knee movement was achieved in all cases 6 weeks after removal of frame. Neither refracture nor deep infection was seen in any of these patients. Compared with internal fixation, use of this device is less invasive and requires a very short operating time. The fixator can be removed as an outpatient procedure with no need for an anaesthetic.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1995

General concepts of surgical treatment of severe multisystem injuries.

This article is based on an investigation of the management of 1976 patients with multisystem injuries. Three hundred twenty-five patients with multiple trauma and 981 patients with single injury were studied. The surgical treatment of severe multisystem injuries is based on 3 main concepts. The first concept is the substantiated widening of the score of indications for surgical treatment of injuries. Surgical treatment is done in 68.9% of patients with multisystem injuries. Indications for surgical intervention (according to their significance) can be categorized as emergency, urgent, postponed, and planned operations; these were 59%, 17.2%, 23.5%, and 11.3%, respectively, of total surgical procedures. The second concept is assessment of the clinical state of injured patients by means of the BIIX-CI scale, which was developed to define a reasonable time for doing a surgical procedure and to define vital function stability. The 3 levels of clinical state are graded as compensated (range, 16-30 points), subcompensated (range, 31-40 points), and decompensated (> 40 points). The third concept is the reasonable succession in surgical procedures. It is advantageous to do similar operations simultaneously at compensated and subcompensated states. Dissimilar surgical interventions should be done in succession during the course of a single anesthesia or at different times according to the grading of emergency (urgent, postponed, and planned).

Humans↗
PubMed1996

Early nutritional support in severe traumatic patients.

Multiple trauma is associated with altered metabolism, wasting of the lean body mass and compromised wound healing. Nutritional support is one way to improve the condition of these critically ill patients. We performed a prospective randomized study on the effect of early nutritional support in severely injured patients admitted to the Division of Traumatic Surgery, Siriraj Hospital between June 1992 and January 1994. Thirty-eight severe traumatic patients with ISS between 20-40 were randomly divided into control and study group. The 17 patients in the control group were treated in the conventional method with administration of hypo caloric intravenous regimen and supplement with oral diet as soon as the bowel function was returned. The 21 patients of the study group were fed either by enteral or parenteral feeding or both with an appropriate caloric and protein requirement as soon as hemodynamic status was stabilized. We found the study group had a lower mortality rate, a lower complication rate, a shorter period of ICU stay, and an earlier weaning from the ventilator than the control group. The study group also lost less weight than the control group. Nitrogen balance in the study group was significantly lower than the control group.

Adult↗
PubMed2002

The timing of fracture treatment in polytrauma patients: relevance of damage control orthopedic surgery.

Information illustrating the benefits of fracture stabilization after multiple trauma has been gathering for almost a century. At the turn of the last century, the introduction of the Thomas splint clearly demonstrated the importance of skeletal stabilization in the management of these patients. The introduction of standardized surgical treatment for fractures in the early 1950s is considered today as the turning point in the care of the polytraumatized patient. With the knowledge acquired, the application of early operative fixation of fractures in severely injured patients in the 1980s has yielded to the concept of early total care of all fractures. Yet, in distinct patient subgroups with severe thoracic injuries and very high injury severity scores, this concept has been associated with adverse outcomes. Therefore, in a further era that began in the 1990s, a different approach has been favored for these subgroups. It recommends early (initial) temporary stabilization followed by secondary definitive osteosynthesis of major fractures in patients at high risk of developing systemic complications. In the last decade, attempts have been made to determine which patients benefit from early total care and which ones should undergo a secondary definitive approach. This manuscript provides a historical overview on the changing treatment of fractures and summarizes the evolution of "damage control orthopedic surgery."

Embolism, Fat↗
PubMed1992

Pulmonary damage after intramedullary femoral nailing in traumatized sheep--is there an effect from different nailing methods?

Stabilization of femoral shaft fractures is a controversial issue in the management of patients with multiple trauma. Intramedullary nailing usually is preferred primarily; in recent years, however, pulmonary complications (e.g., ARDS) have been reported that were attributed to the reaming procedure. To study the effects of different nailing methods in a model of severe trauma, hemorrhagic shock and lung contusion were created at day 1 in sheep prepared by the method described by Staub. After recuperation (day 3) the animals in the study group (group 1) underwent intramedullary nailing of a closed femur without prior reaming; group 2 was treated with reaming and nailing according to AO standards. The reaming procedure led to an acute increase of pulmonary arterial pressure only in group 2 (19.8 +/- 2.1 to 31.0 +/- 4.6 mm Hg). Pulmonary triglyceride levels increased at parallel time points from 18.27 +/- 2.3 to 33.04 +/- 7.37 mg/dL only in group 2. Stimulatory capacity of polymorphonuclear leukocytes (PMNL) increased in the study group and decreased in controls (group 1: 2.652 +/- 0.23 x 10(6) cpm to 3.387 +/- 1.34 x 10(6) cpm; group 2: 2.699 +/- 0.34 x 10(6) cpm to 2.460 +/- 0.187 x 10(6) cpm). Intramedullary nailing caused an increase of lung capillary permeability in both groups; in the study group less damage was seen (group 1: 0.390 +/- 0.0006 to 0.354 +/- 0.011; group 2: 0.391 +/- 0.0004 to 0.336 +/- 0.015; p < 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

Acetylglucosaminidase↗
PubMed1993

Interleukin-8 and development of adult respiratory distress syndrome in at-risk patient groups.

Neutrophils have been implicated in the pathogenesis of the adult respiratory distress syndrome (ARDS). We have measured concentrations of the neutrophil attractant interleukin-8 in blood and bronchoalveolar lavage fluid (BAL) from patients at risk of ARDS. We studied 29 patients from three groups at risk of developing ARDS: multiple trauma (n = 16), perforated bowel (n = 6), and pancreatitis (n = 7). ARDS developed in 7 of these patients. Interleukin-8 in BAL and blood samples taken on initial hospital presentation was measured by a sandwich enzyme-linked immunosorbent assay. The mean BAL interleukin-8 concentration was significantly higher for the patients who subsequently progressed to ARDS than for the non-ARDS group (3.06 [SE 2.64] vs 0.053 [0.010] ng/mL, p = 0.0006). There was no difference between the groups in plasma interleukin-8 (6.23 [2.60] vs 5.12 [2.22] ng/mL, p = 0.31). Immunocytochemistry suggested that the alveolar macrophage is an important source of interleukin-8 at this early stage in ARDS development. This study provides evidence of a relation between the presence of interleukin-8 in early BAL samples and the development of ARDS. The early appearance of interleukin-8 in BAL of patients at risk of ARDS may be an important prognostic indicator for the development of the disorder and reinforces the likely importance of neutrophils and the effects of their accumulation and activation in the pathogenesis of many cases of ARDS.

Adolescent↗
PubMed1994

Role of selectins in development of adult respiratory distress syndrome.

The acute lung injury of adult respiratory distress syndrome (ARDS) is characterised by inflammatory cell accumulation and activation in the lung. Selectins are a family of adhesion molecules implicated in leucocyte-endothelial adhesion, whose receptors can exist in a cleaved, soluble form. We investigated whether circulating soluble selectin adhesion molecules, obtained from ARDS at-risk patients, were associated with subsequent ARDS development. 82 patients, at risk of ARDS, were enrolled from three well-defined groups (multiple trauma, pancreatitis, perforated bowel). Plasma samples were obtained on hospital presentation and soluble L, E, and P, selectins were quantified with a sandwich enzyme-linked immunosorbent assay (ELISA). 14 patients subsequently developed ARDS. Initial plasma soluble L-selectin (sL-selectin) levels were significantly lower in patients who progressed to ARDS compared to those who did not (p = 0.0001; 95% Cl for mean in ARDS patients as percent of that in non-ARDS patients, 27-61%). Moreover concentrations were lower than in 62 normal volunteers (range 0.37-6.55, median 1.83 micrograms/mL, n = 62), suggesting that a selective reduction of sL-selectin correlates with susceptibility. In addition, a significant correlation was found between low values of sL-selectin and indices of subsequent lung injury including requirement for ventilation (p = 0.0001) and degree of respiratory failure (p = 0.0001). A significant correlation was also found between low values of sL-selectin and patient mortality (p = 0.002). These results elucidate the inflammatory cell endothelial interactions in the early stages of ARDS and may be of prognostic value.

Acute Disease↗
PubMed1993

Lactate clearance and survival following injury.

Previous reports cite optimization of O2 delivery (DO2) to 660 mL/min/m2, O2 consumption (VO2) to 170 mL/min/m2, and cardiac index (CI) of 4.5 L/min as predicting survival. We prospectively evaluated 76 consecutive patients with multiple trauma admitted directly to the ICU from the operating room or emergency department. Patients had serum lactate levels and oxygen transport measured on ICU admission and at 8, 16, 24, 36, and 48 hours. Patients were analyzed with respect to survival (S) versus nonsurvival (NS), lactate clearance to normal (< or = 2 mmol/L) by 24 and 48 hours, hemodynamic optimization as defined above, as well as Injury Severity Score (ISS), ICU stay (LOS), and admission blood pressure. All patients achieved non-flow-dependent VO2. There was no difference in CI, DO2, VO2, or ISS when S was compared with NS. All 27 patients whose lactate level normalized in 24 hours survived. If lactate levels cleared to normal between 24 and 48 hours, the survival rate was 75%. Only 3 of the 22 patients who did not clear their lactate level to normal by 48 hours survived. Ten of the 25 nonsurvivors (40%) achieved the above arbitrary optimization criteria. Fifteen of the survivors never achieved any of these criteria. Optimization alone does not predict survival. However, the time needed to normalize serum lactate levels is an important prognostic factor for survival in severely injured patients.

Adolescent↗
PubMedDate not supplied

Metabolic and respiratory effects of sodium lactate during short i.v. nutrition in critically ill patients.

BACKGROUND: Hyperglycemia and an increased ventilatory demand secondary to an increased CO2 production are frequent undesirable effects of total parenteral nutrition (TPN) in critically ill patients. This study was performed to assess whether sodium lactate as a metabolic substrate may affect these variables. METHODS: Five male patients with multiple trauma during the flow phase were studied during two consecutive 3-hour periods of isocaloric (1.1 x resting energy expenditure) TPN. Sixty-five percent of total calories was provided as carbohydrate, 15% as lipids, and 20% as amino acids during the first period (TPN-glucose), whereas 35% carbohydrate, 30% lactate, 20% lipids, and 15% amino acids (TPN-lactate) were substituted during the second period. Respiratory gas exchanges and net substrate oxidation were assessed by means of indirect calorimetry. Glucose kinetics was determined by primed-constant infusion of U-13C glucose. RESULTS: Compared with TPN-glucose, TPN-lactate decreased glycemia by 20%, insulinemia by 43%, net carbohydrate oxidation (assessed from indirect calorimetry) by 34%, and plasma glucose oxidation (assessed from 13CO2) by 54%. Respiratory oxygen exchange were increased by 3.7% due to a 20% thermic effect of lactate, but respiratory CO2 exchanges did not change. Pao2 decreased by 11.3 mm Hg, indicating that the increased O2 consumption was not matched by an appropriate increase in spontaneous ventilation. Arterial pH increased from 7.41 +/- 0.04 to 7.46 +/- 0.05. CONCLUSION: Sodium lactate as a metabolic substrate limits hyperglycemia but induces metabolic alkalosis and does not spare the ventilatory demand.

Adult↗
PubMed2002

[Early clinical management after polytrauma with 1 and 4 slice spiral CT].

In the early clinical phase the comprehensive imaging of patients with multiple trauma using helical CT is already established. Aim of this study was to assess whether MSCT may improve the patient management and the diagnostic results. The procedure is designed as follows: after life-thretening treatment x-ray of chest and ultrasound are carried out in the emergency room. Then the patient is moved to CT. From 1998 to december 2000 241 patients were examined using a single slice helical CT (Somatom plus 4), in 2001 79 patients using a 4-slice helical CT (Somatom VZ, Siemens Med.Sol.). After CT selected radiograms of the extremities were taken. 359 of 360 procedures were carried out successfully. Excluding 1 case (death during 1-sl.h CT) all relevant lesions of head, neck, and body were diagnosed. Although the patients had an injury severity score of approximately 30. The change from 1 slice-helical CT to 4 slice-helical CT allowed us to reduce the stay in the CT room from 28 to 16 min. The total lethality decreased by approximately 4%. Advantages for the patient arose from the standardized examination protocol using multislice CT. If integrated in an interdisciplinary management concept, it is a good compromise between examination time, comprehensive diagnostic imaging, life-saving therapeutic procedures, and therapy planning.

Efficiency, Organizational↗
PubMed2004

[Injury to the pelvic ring. Diagnosis and current possibilities for treatment].

Pelvic fracture, especially in combination with multiple trauma, can still lead to ife-threatening situations. Only clear inclusion criteria and decisions can ensure survival of the patient, the key task being mechanical stabilization using external fixators or pelvic clamps with or without surgical intervention for hemostasis. The basis for problem-orientated management is a precise classification, which is based on conventional X-rays in emergency situations and detailed analysis of computed tomography for the planning of definitive surgical interventions. The classification groups postulated are stable pelvic fractures (type A), rotational unstable pelvic fractures (type B -- partial stability of the posterior ring present), and translational instabilities (type C -- with a complete disruption of the anterior and posterior pelvic ring). This classification leads to clear indications for pelvic ring stabilization as surgical interventions are only exceptionally indicated in type A fractures, stabilization of the anterior ring is sufficient for type B fractures, and combined posterior and anterior stabilization is necessary for treatment of type C fractures. Following these concepts and by using standardized procedures and implants, the high rate of enclosed anatomical healing can be achieved even after type C injuries. Nevertheless, the role of concomitant soft tissue injuries and scar formation is not clear as the origin of the frequently observed long-term clinical impairments even after anatomical reconstruction of the osteoligamentous structures.

Emergencies↗
PubMed1995

[Cost analysis of clinical treatment of polytrauma patients].

In order to assess the costs arising from the treatment of polytraumatized patients we analysed the data of 100 prospectively studied multiple trauma patients (ISS 38) calculating all medical expenses during their clinical stay. The average cost per patient in the studied group (n = 100) amounted to 63989.- DM. About 65% of this sum derived from the costs of intensive care, while the expenses for operations covered 19%. The group of primarily deceased patients (n = 25) generated the lowest costs of 8468.- DM (per pat.). The highest costs of 95626.- DM were caused by the treatment of patients (n = 32) that developed one or more complications (organ failure) during their stay in the intensive care unit or died (n = 10) during this therapy (101940.- DM). Since the data concerning medical equipment (i.e. surgical devices, radiological equipment) were not centrally registered in the administration department of our clinic, it was not possible to include these costs into this calculation. Thus the total costs must be presumed higher. A relationship between costs of treatment and injury severity (ISS) appeared in polytrauma only by a cost reduction in early deceased very severely injured patients (ISS > 70). The primary diagnosis (injury pattern and severity) cannot predict the incidence of complications increasing the costs of treatment. In the presented study we did not find a correlation between age and treatment costs.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1988

[Results of surgical treatment of pelvic fractures in polytraumatized patients].

High-speed accidents involving automobiles and two-wheeled vehicles with resultant entrapment and crush injuries have led to an ever-increasing incidence of pelvic fracture within the realm of multiple trauma. Between the years 1982 and 1986 ninety-eight cases of pelvic fracture were operatively stabilised by the Department of Surgery and the Outpatient Department of the Technical University, Klinikum Rechts der Isar, Munich, West Germany. This paper is a report on fifty-five of these patients who were discovered to have suffered additional multitrauma. Independent from those patients found to have sustained multitraumatisation, twenty-four cases of isolated acetabulum fracture as well as four instances of pelvic ring fracture and one fracture of the pelvic brim were also documented. Combinations of the above mentioned fractures were uncovered in twenty-six patients. With fifty-four of the fracture injuries, osteosynthesis was carried out while in one case primary alloarthroplasty was deemed necessary. Following a mean post-treatment period of twenty-six months forty-five of the patients were objectively evaluated for results of treatment according to the methodology of Merle d'Aubigne. 70% of those patients assessed were rated with a "good" result. At the time of follow-up thirty-five (78%) of the forty-five reexamined individuals reported to be once again employed. Early operative treatment along with internal stabilisation and prompt initiation of physiotherapy have proved decisive in obtaining a favourable postoperative result.

Adolescent↗
PubMed2000

Hip dislocation in patients with multiple injuries. A followup investigation.

The combination of traumatic hip dislocation and multiple trauma have not been well documented in the medical literature to date. The role of surgery therefore has not been well defined in these patients. During a 12-year period, 29 consecutive patients with 31 traumatic hip dislocations with concomitant Injury Severity Scores exceeding 18 points were treated at the authors' institution. An initial satisfactory closed reduction was achieved in 23 patients, two patients had failed reductions, and four patients had noncongruous reductions. Open surgical procedures were done on these patients and on 10 additional patients who had associated acetabular or femoral head fractures. Overall, seven patients from the group died including two patients who had surgical procedures. From 17 living patients who did not require surgery for failed or noncongruous reductions, 13 patients were available for followup at a mean of 8 years after their injury. The clinical results at this followup were excellent in three hips, good in seven hips, and fair in four hips. The radiologic results, however, showed that five patients had early (Grades I and II according to Matta) hip degeneration and seven patients had Grade II (according to Ficat) avascular necrosis of the femoral head. These changes were not clinically significant at this followup and it is proposed that these results justify a policy of active treatment of traumatic hip dislocation in patients with multitrauma.

Adolescent↗
PubMed2003

[CT-guided aortic balloon occlusion in traumatic abdominal and pelvic bleeding].

PURPOSE: To introduce a new interventional method for CT-guided aortic balloon occlusion in patients with life-threatening abdominal or pelvic bleeding. MATERIALS AND METHODS: Three male patients (age 18, 30, and 45 years) with multiple trauma underwent CT-guided balloon occlusion of the aorta after CT identified an active abdominal or pelvic bleeding site and the patients became unstable (systolic blood pressure, BP < 80 mm Hg) despite resuscitation continuous volume. Using a right femoral approach, a 9F sheath was immediately introduced and the positions of the guide wire and balloon catheter (20 x 40 mm) were intermittently checked with CT scans and CT fluoroscopy. In one case, a C-clamp was applied to the pelvic ring under CT guidance for emergency stabilization of an unstable pelvic fracture. RESULTS: CT-guided aortic balloon occlusion and the mounting of the pelvic C-clamp were technically successful. Intervention time was 4 to 6 minutes for aortic balloon occlusion. All patients became at least temporarily stable hemodynamically with the blood pressure rising above 100 mmHg. The infrarenal occlusion catheters were left in place up to 60 minutes. Suprarenal occlusion was not performed. Two patients died due to protracted shock and complex injuries (injury severity score (ISS: 50 - 64). CONCLUSION: CT-guided aortic occlusion provides fast and effective bleeding control immediately after completion of the diagnostic CT. The procedure can be combined with other specific emergency surgical or interventional procedures. Experience with more patients is necessary for further evaluation of this new technique.

Adolescent↗
PubMed2003

[Pelvic fracture. Diagnostics and current treatment options].

Pelvic fracture, especially in combination with multiple trauma, can still lead to life-threatening situations. Only clear inclusion criteria and decisions can ensure the survival of the patient, the key task being mechanical stabilization using external fixators or pelvic clamps with or without surgical intervention for hemostasis. The basis for problem-oriented management is a precise classification, which is based on conventional X-rays in emergency situations and detailed analysis of computed tomography for the planning of definitive surgical interventions. The classification groups postulated are stable pelvic fractures (type A), rotational unstable pelvic fractures (type B--partial stability of the posterior pelvic ring present), and translational instabilities (type C--with a complete disruption of the anterior and posterior pelvic ring). This classification leads to clear indications for pelvic ring stabilization as surgical interventions are only exceptionally indicated in type A fractures, stabilization of the anterior ring is sufficient for type B fractures, and combined posterior and anterior stabilization is necessary for treatment of type C fractures. Following these concepts and by using standardized procedures and implants, the high rate of enclosed anatomical healing can be achieved even after type C injuries. Nevertheless, the role of concomitant soft tissue injuries and scar formation is not clear as the origin of the frequently observed long-term clinical impairments even after anatomical reconstruction of the osteoligamentous structures.

Adolescent↗