Abstract
The VISEP study was conducted in a randomized manner from April 2003 to June 2005 in 18 interdisciplinary intensive care units. Two questions were to be clarified: (1) Is the benefit of intensive insulin therapy reproducible in septic patients and (2) should crystalloids or colloids be used for initial fluid resuscitation in severe sepsis? A total of 2212 patients were screened, but only 600 patients were randomized into the four study groups. Intensive insulin therapy The blood glucose level was adjusted to be between 80 and 110 mg/dl in the intensive insulin therapy (IIT) group and between 180 and 200 mg/dl in the “conservative” insulin group (CIT). There were no significant differences in mortality at day 28 and day 90 (24.7 vs 26.0%; p = 0.74 and 39.7 vs 35.4%; p = 0.31, respectively). Indeed, the study had to be stopped because of safety reasons due to significantly more serious hypoglycemic states (17.0 vs 4.1%; p < 0.001) in the IIT group. Although the study does not refute the benefit of intensive insulin therapy, the results will contribute to the end of IIT in intensive care units. Colloids vs crystalloids A total of 600 patients were randomized, but only 262 patients were treated by 10% HES 200/0.5 and 303 by Ringer’s lactate (Sterofundin®). At day 28, the mortality was insignificantly increased in the HES group compared with the Ringer’s lactate group (26.7 vs 24.1%; p = 0.48). At day 90, a significantly increased mortality was observed in the HES group (26.7 vs 24.1%; p = 0.48). In addition, a significantly increased incidence of acute renal failure (34.9 vs 22.8%; p = 0.02) was seen and renal replacement therapy became necessary more frequently (18.3 vs 9.2%). For these reasons, the authors warn about the use of hydroxyethyl starch in severe sepsis and septic shock. The submitted data do not justify this warning. The daily maximal dose of 20 ml/ kg/d for 10% HES 200/0.5 was exceeded and the recommended upper serum creatinine level was elevated from 177 to 320 µmol/l. For patients treated with recommended daily dosage of 20 ml/kg/ d (22 mg/kg/d in the study), the mortality is comparable with Ringer’s lactate at days 28 and 90 (22.8 vs 24.1%; p = 0.747 and 30.9 vs 33.9%; p = 0.562, respectively). The study has shown that 10% HES 200/0.5 is a drug, for which the indication, contraindications and daily maximal dose have to be met.
Zusammenfassung
Die VISEPStudie wurde zwischen April 2003 und Juni 2005 in 18 interdisziplinären Intensivstationen deutscher Krankenhäuser randomisiert durchgeführt, um 2 Fragen zu klären: (1) Lässt sich der Nutzen der intensiven Insulintherapie am septischen Patienten reproduzieren und (2) sollen Kristalloide oder Kolloide zur initialen Kreislaufstabilisierung bei schwerer Sepsis verwendet werden? Es wurden 2212 Patienten mit Sepsis ge screent, aber letztendlich nur 600 in die 4 Studienarme randomisiert. Intensive Insulintherapie In der Gruppe mit intensiver Insulintherapie (IIT) sollte der Blutzucker zwischen 80 und 110 mg/ dl und in der „konservativen“ Insulingruppe zwischen 180 und 200 mg/dl eingestellt werden. Es gab keine signifikanten Letalitätsunterschiede nach 28 bzw. 90 Tagen (24,7 vs. 26,0%; p = 0,74 bzw. 39,7 vs. 35,4%; p = 0,31). Die Studie wurde jedoch wegen signifikant häufigerer schwerer Hypoglykämien (17,0 vs. 4,1%; p < 0,001) in der IIT-Gruppe aus Sicherheitsgründen gestoppt. Damit steht die intensive Insulintherapie auf den Intensivstationen vor dem „Aus“, ihr Nutzen ist allerdings nicht schlüssig widerlegt worden. Kolloide vs. Kristalloide Es wurden 600 Patienten randomisiert und letztlich 262 mit 10% HES 200/0,5 und 303 mit Ringer- Laktat (Sterofundin®) behandelt. Die HES- Gruppe wies gegenüber der Ringer-Laktat-Gruppe eine nichtsignifikant erhöhte 28-Tage- Letalität (26,7 vs. 24,1%; p = 0,48), aber eine signifikant erhöhte 90- Tage-Letalität auf (41,0 vs. 33,9%; p = 0,09). In der HES-Gruppe fand sich eine signifikant höhere Rate von akutem Nierenversagen (34,9 vs. 22,8%; p = 0,002) und mehr Nierenersatztherapie (18,3 vs. 9,2%). Daraus leiten die Autoren die Schlussfolgerung ab, vor der Therapie mit Hydroxyäthylstärke bei schwerer Sepsis und septischem Schock warnen zu müssen. Nach den vorliegenden Daten ist das nicht gerechtfertigt. Die Tagesmaximaldosis von 20 ml/kg/d für 10% HES 200/0,5 wurde überschritten und der empfohlene obere Serumkreatininwert von 177 _mol/l in der Studie auf maximale 320 µmol/l angehoben. Bei Einhalten der empfohlenen maximalen HES-Dosis pro Tag von 20 ml/kg Körpermasse (in der Studie wurden 22 ml/kg/d zugrunde gelegt) ergibt sich eine dem Ringer-Laktat vergleichbare 28- und 90 Tage-Letalität (22,8 vs. 24,1%; p = 0,747 bzw. 30,9 vs. 33,9%; p = 0,562). Die Studie hat lediglich belegt, dass die 10% HES 200/0,5 ein Medikament ist, für das Indikationen, Kontraindikationen und Tagesmaximaldosierungen einzuhalten sind.
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Engelmann, L. Die VISEP-Studie: ein Schritt vorwärts, zwei Schritte zurück. Intensivmed 45, 255–262 (2008). https://doi.org/10.1007/s00390-008-0887-x
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DOI: https://doi.org/10.1007/s00390-008-0887-x
Key words
- severe sepsis
- septic shock
- intensive insulin therapy
- hypoglycemia
- volume resuscitation
- hydroxyethyl starch
- Ringer’s lactate
- mortality
- renal failure