• Jürgen Graf, Andrea Reinhold, Frank M Brunkhorst, Max Ragaller, Konrad Reinhart, Markus Loeffler, Christoph Engel, and German Competence Network Sepsis (SepNet).
• Aero Medical Centre Frankfurt, Lufthansa AG, Frankfurt, Germany. juergen.graf@dlh.de
• Wien. Klin. Wochenschr. 2010 Oct 1; 122 (19-20): 572-8.

BackgroundStructures in intensive care medicine comprise human as well as material resources, organization, and management and may be related to processes thereby affecting patients' outcomes. Utilizing a unique data base we evaluated structures of German intensive care units (ICUs).MethodsThe study was carried out by the German Competence Network Sepsis (SepNet). Data were prospectively collected on a cross-sectional basis in a representative random sample of German hospitals utilizing a questionnaire. Structures were related to ICU outcome of patients with severe sepsis or septic shock. The sample was subdivided in 5 strata according to hospital size.ResultsA total of 454 ICUs cared for 3877 patients including 415 patients (11%) with severe sepsis or septic shock. The mean number of beds per ICU was 10.4, the ratio of ICU to hospital beds 1:27, both with significant differences depending on hospital size. 81% of the ICUs provided around the clock physician presence (range: 66-98% across hospital strata, p < 0.001). Shift-wise, one nurse was responsible for a mean number of 2.7 patients (morning 1:2.3, afternoon 1:2.6, night 1:3.3 patients) with significant variation according to hospital size (smaller hospitals 1:2.9, university hospitals 1:2.1, p < 0.001). More than half of all German ICUs are lead by anesthesiologists. Neither physician nor nurse staffing was associated with mortality in the subset of patients with sepsis.ConclusionsIn a representative, nationwide sample of German ICUs key elements of structures varied considerably with respect to hospital size. This has to be considered when proposing standards, reimbursement strategies, or quality assessment.

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