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  • 1
    ISSN: 1432-1238
    Keywords: Key words Hemofiltration ; Systemic inflammatory response syndrome ; Tumor necrosis factor α ; Interleukin-6 ; Clearance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To test the hypothesis that continuous hemofiltration increases interleukin-6 (IL-6) and tumor necrosis factor alpha (TNFα) clearances and results in decreased cytokine plasma concentrations independent of renal function in patients with early SIRS. Design: Prospective, controlled, randomized study. Setting: Intensive care units at a university hospital. Patients: 28 consecutive patients who fulfilled the criteria of the systemic inflammatory response syndrome (SIRS). Interventions: Patients with SIRS were randomly assigned to either a hemofiltration or a control group irrespective of renal function. In patients of the hemofiltration group an isovolemic hemofiltration was initiated directly after the diagnosis of SIRS and maintained for at least 48 h. Measurements and results: A significant (p 〈 0.001) increase in total IL-6 clearance (hemofiltrate + urine), but not in TNFα clearance, was observed with hemofiltration. However, the plasma concentrations of both cytokines remained unchanged. Hemodynamic variables did not change significantly. Conclusions: Continuous hemofiltration increases IL-6 plasma clearance but not TNFα clearance. However, hemofiltration failed to decrease plasma concentrations of TNFα and IL-6 and, therefore, cannot be used effectively for cytokine elimination in SIRS. Accordingly, beneficial effects occasionally reported with hemofiltration are unlikely to be expected due to elimination of IL-6 or TNFα.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1238
    Keywords: Key words Percutaneous dilatational tracheostomy ; Complications ; Results ; Tracheal stenosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To analyze perioperative and postoperative complications and long-term sequelae following percutaneous dilatational tracheostomy (PDT). Design: A prospective clinical study of patients undergoing PDT. Setting: Seven intensive care units at a University hospital Patients: 326 intensive care patients (202 male, 124 female; age: 11–95 years) with indications for tracheostomy. Interventions: Using tracheoscopic guidance, 337 PDTs were performed according to Ciaglias' method. In 106 decannulated patients, tracheal narrowing was assessed by plain tracheal radiography. Results: Two procedure-related deaths were seen (0.6 %). Perioperative and postoperative complications occurred with 9.5 % of the PDTs. One of 106 patients, who were followed-up for at least 6 months, showed a clinically relevant tracheal stenosis. Subclinical tracheal stenosis of at least 10 % of the cross-sectioned area was recognized in 46 of 106 patients (43.4 %). In the univariate analysis, the degree of stenosis was influenced by the age of the patient (p = 0.044), the duration of intubation prior to PDT (p = 0.042) and by the duration of cannulation (p = 0.006). These parameters had no statistical significance in a multiple regression model. Conclusion: When performed by experienced physicians, percutaneous dilatational tracheostomy under fiberoptic guidance is a safe method. The risks of early complications and of clinically relevant tracheal stenoses are low. Subclinical tracheal stenoses are found in about 40 % of patients following PDT.
    Type of Medium: Electronic Resource
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