Abstract
BackgroundCurrently there is no drug proven to effectively treat cats with feline infectious peritonitis (FIP).HypothesisPropentofylline (PPF) can decrease vasculitis, and therefore prolong survival time in cats with FIP, and increase their quality of life.AnimalsTwenty‐three privately owned cats with FIP.MethodsPlacebo‐controlled double‐blind trial. FIP was confirmed by histology or immunostaining of feline coronavirus (FCoV) antigen in effusion or tissue macrophages or both. The cats were randomly selected for treatment with either PPF or placebo. All cats received additional treatment with glucocorticoids, antibiotics, and low molecular weight heparin according to methods.ResultsThere was no statistically significant difference in the survival time of cats treated with PPF (8 days, 95% CI 5.4–10.6) versus placebo (7.5 days, 95% CI 4.4–9.6). The median survival time of all cats was 8 days (4–36 days). There was neither a difference in quality of life (day 7, P = .892), in the amount of effusion (day 7, P = .710), the tumor necrosis factor‐alpha (TNF‐α) concentration (day 7, P = .355), nor in any other variable investigated in this study, including a complete blood count, and a small animal biochemistry profile.Conclusions and Clinical ImportanceThis study did not detect an effect of PPF on the survival time, the quality of life, or any clinical or laboratory parameter in cats with FIP. Therefore, PPF does not appear to be an effective treatment option in cats with a late stage of the disease FIP.
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