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DOI: 10.1055/s-2003-37314
Procalcitonin is a Valid Marker of Infection in Decompensated Cirrhosis
Procalcitonin ist ein zuverlässiger Infektionsmarker bei Zirrhose mit BauchwassersuchtPublikationsverlauf
Manuscript recieved: 17 July 2002
Accepted after revision: 27 December 2002
Publikationsdatum:
19. Februar 2003 (online)

Zusammenfassung
Einleitung: Bakterielle Infektionen sind lebensbedrohliche Komplikationen bei Patienten mit Leberzirrhose und eine frühzeitige Diagnostik ist daher notwendig. Procalcitonin, ein 116 Aminosäuren großes Propeptid des Calcitonins, ist ein neuer Marker für Infektionen. Ziel unserer Studie war es, die Wertigkeit des Procalcitonins in der Diagnose einer Infektion bei Leberzirrhose zu evaluieren. 127 Patienten mit Leberzirrhose wurden analysiert und in drei Gruppen aufgeteilt, abhängig von morphologischen und bakteriologischen Befunden: dekompensierte Patienten mit (Gruppe I = 36) und ohne (Gruppe II = 64) Infektion und 27 Patienten (Gruppe III) nichtdekompensiert und ohne Nachweis einer Infektion.
Methoden: Die Diagnose einer Infektion wurde anhand von Standardkriterien gestellt. Serum-Procalcitonin, Tumornekrosefaktor α, Interleukin-6 und C-reaktives Protein wurden mittels kommerziell erhältlicher Methoden gemessen.
Ergebnisse: Die PCT-Serumspiegel waren zwischen den verschiedenen Gruppen signifikant unterschiedlich: Gruppe I 2,8 ng/ml (0,4 - 20,4); Gruppe II 0,6 ng/ml (0,1 - 5,9); Gruppe III 0,4 ng/ml (0,1 - 1,2). Werte über 0,58 ng/ml hatten eine Sensitivität von 92 % und eine Spezifität von 78 % für die Diagnose einer Infektion und waren mit einer 50 %-Mortalität innerhalb der ersten zwei Monate assoziiert. Interleukin-6, Tumornekrosefaktor α und C-reaktives Protein zeigten eine deutlich niedrigere Sensivität und Spezifität für die Diagnose Infektion.
Schlussfolgerung: Bei Patienten mit dekompensierter Leberzirrhose sind die Serum-Procalcitoninspiegel der bislang sensitivste und spezifischste Marker für die frühe Erfassung einer bakteriellen Infektion.
Abstract
Background/Aims: Bacterial infections are life-threatening complications in cirrhosis and early diagnosis is mandatory. Procalcitonin, a 116 amino acid propeptide of calcitonin, is an early marker of infection. The aim was to evaluate prospectively procalcitonin in the diagnosis of bacterial infection in cirrhosis. 127 patients with liver cirrhosis were analysed and stratified into three groups according bacteriological and morphological findings; decompensated patients with (group I = 36) and without (group II = 64) infection, and 27 non-decompensated and non-infected (group III).
Methods: Diagnosis of infection was made using standard criteria. Serum procalcitonin, tumour necrosis factor alpha, interleukin-6 and C-reactive protein were measured using commercially available methods.
Results: PCT serum levels were significantly different between group I (2.8 ng/ml [0.4 - 20.4]), group II (0.6 ng/ml [0.1 - 5.9]) and group III (0.4 ng/ml [0.1 - 1.2]), respectively. Levels above 0.58 ng/ml had a sensitivity of 92 % and specificity of 78 % for the diagnosis of infection and were associated with a 50 % mortality in the first two months. Interleukin-6, tumour necrosis factor alpha and C-reactive protein were less sensitive and specific for the diagnosis of infection.
Conclusion: In decompensated cirrhosis procalcitonin serum levels provided the most sensitive and specific tool for the initial diagnosis of bacterial infection.
Schlüsselwörter
Cytokine - dekompensierte Leberzirrhose - Varizenblutung - spontan bakterielle Peritonitis - Überleben
Key words
Cytokines - liver decompensation - variceal bleeding - spontaneous bacterial peritonitis - survival
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Christoph Elsing, MD
St. Elisabeth Krankenhaus
P.O. Box 580
46225 Dorsten
eMail: c.elsing@krankenhaus-dorsten.de