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Letter to the Editor|Articles in Press

Hypotension and tachycardia following an intravenous bolus of Ringer’s acetate in an anaesthetized cat

  • Federico Gianolli
    Correspondence
    Corresponding author. Section of Anaesthesiology, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 258c, 8057 Zurich, Switzerland. ;
    Affiliations
    Section of Anaesthesiology, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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  • Annette P N Kutter
    Affiliations
    Section of Anaesthesiology, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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Published:March 02, 2023DOI:https://doi.org/10.1016/j.vaa.2023.02.011
      This letter reports the cardiovascular complications that developed in a cat after a 3 mL kg-1 fluid bolus of Ringer’s acetate during sevoflurane general anaesthesia. We highlight the possible side effects of acetate containing intravenous (IV) crystalloid fluids administered as a rapid bolus. Fluid therapy is routinely administered to veterinary patients during general anaesthesia and IV fluid boluses are administered to increase preload, stroke volume and possibly improve tissue perfusion (

      Boysen, S. R., & Gommeren, K. (2021). Assessment of Volume Status and Fluid Responsiveness in Small Animals. In Frontiers in Veterinary Science (Vol. 8). Frontiers Media S.A. https://doi.org/10.3389/fvets.2021.630643

      ). To avoid unnecessary fluid administration, which may increase morbidity and mortality, the fluid responsiveness of an individual can be assessed with a preload challenge. This can be a mini IV isotonic fluid bolus of 3-5 mL kg -1, administered over 1-5 minutes (

      Boysen, S. R., & Gommeren, K. (2021). Assessment of Volume Status and Fluid Responsiveness in Small Animals. In Frontiers in Veterinary Science (Vol. 8). Frontiers Media S.A. https://doi.org/10.3389/fvets.2021.630643

      ).
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