Zentralblatt für Chirurgie
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Review Comparative Study
[Value of clinical scoring systems for evaluation of injury severity and as an instrument for quality management of severely injured patients].
Trauma Score Systems attempt to summarize the severity of injury in a single value. They provide a better classification of trauma patients and translate different severities of injury in a common language. They enable thereby comparisons between hospitals or trauma systems. ⋯ Glasgow Coma Scale, Revised Trauma Score, Injury Severity Score and TRISS are the most often used international scores for severely injured patients. Their sensitivity and specificity, validity, reliability and practicability have been studied and proved in many trials. The role of these scoring systems for quality management purposes in the treatment of severe trauma is actually studied with the Trauma Registry of the German Society for Trauma Surgery.
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Adequate prehospital care of the severely traumatised patient is important to prevent or attenuate early as well as late life threatening complications, such as tissue hypoxia, ischemia/reperfusion injury and finally multiple organ failure. A mismatch of oxygen supply and oxygen demand is a hallmark in the pathophysiology of multiple trauma. Oxygen supply may be diminished by the following factors: shock-related decrease of cardiac output, anemia and hypoxia. ⋯ Furthermore, ventilatory support is indicated when respiratory failure, loss of consciousness, or severe shock are present. Additional oxygen should be given whenever possible, even in the absence of an overt hypoxic state. Important additional measures are cervical spine immobilisation and reposition as well as splinting of long bone fractures or luxations, in order to avoid secondary injury of the spinal cord or ongoing tissue and vascular damage.
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Our previous studies in isolated rat hindlimbs using crystalloid perfusion solutions have shown that control of the initial reperfusion reduces postischemic complications. However, no experimental study has been undertaken to evaluate the concept of controlled limb reperfusion experimentally in an in-vivo blood-perfused model and to assess the local as well as systemic effects of normal blood reperfusion and controlled limb reperfusion. Of twenty pigs undergoing preparation of the infrarenal aorta and iliac arteries, six were observed for 7.5 hours and served as controls. ⋯ Furthermore, controlled limb reperfusion resulted in higher total adenine nucleotides content (78% vs. 57% of control), less tissue acidosis (6.6 +/- 0.2 vs. 5.9 +/- 0.1, p < 0.002), severely reduced CK release (2,618 +/- 702 vs. 12,743 +/- 2.562, p < 0.02) and potassium release (5.1 +/- 0.3 vs. 7.9 +/- 0.3 mmol/L, p < 0.0002) as compared to normal blood reperfusion. In conclusion this study shows that 6 hours of acute infrarenal aortic occlusion will result in a severe reperfusion injury (postischemic syndrome) if normal blood at systemic pressure is given in the initial reperfusion phase. In contrast, initial treatment of the ischemic skeletal muscle by controlled limb reperfusion reduces the metabolic, functional and biochemical alterations.
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Sequential organ failure after multiple trauma emerges from a whole-body inflammatory process which develops as a complex host defense response to hypovolemic shock/resuscitation and traumatic tissue injury. Successful prevention and treatment involves exact assessment of inflicted damage and profound knowledge of the different stages of posttraumatic immune alterations. Local release of potent inflammatory mediators (cytokines, complement, arachidonic acid derivatives, reactive oxygen metabolites) primarily induces a repair process. ⋯ Diffuse capillary leakage and microcirculatory disorder prepare cellular dysfunction. Secondary severe immune defects support septic complications which maintain an autodestructive process. Therapeutical advances depend on the analysis of local and time-dependent expression of relevant inflammatory mediators and cellular signalling systems.
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Over the last 30 years intensive care medicine has undergone drastic changes not only because of changes in patient population but also because of the progress in medical technology. Given that resources are finite and limited medical and socio-ethical principles should be applied for the distribution and withdrawal of these resources. ⋯ Whilst in intensive care patients should be scored every day to identify as early as possible those patients who are going to die and those who are going to survive in order to use intensive care resources efficiently. After discharge from intensive care quality of life should be an important factor to assess intensive care performance.