First report of Lyme borreliosis leading to cardiac bradydysrhythmia in two cats



Tornqvist-Johnsen, Camilla, Dickson, Sara-Ann, Rolph, Kerry, Palermo, Valentina, Hodgkiss-Geere, Hannah ORCID: 0000-0001-7561-8479, Gilmore, Paul and Gunn-Moore, Danielle A
(2020) First report of Lyme borreliosis leading to cardiac bradydysrhythmia in two cats. JOURNAL OF FELINE MEDICINE AND SURGERY OPEN REPORTS, 6 (1). 2055116919898292-.

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Abstract

<h4>Case series summary</h4>Two cats were presented for investigation of bradyarrhythmia detected by their referring veterinarians during routine examination. Both cats had extensive investigations, including haematology, serum biochemistry with electrolytes and thyroxine concentrations, systolic blood pressure measurement, echocardiography, electrocardiography and infectious disease testing. Infectious disease testing included serology for <i>Toxoplasma gondii, Ehrlichia canis, Anaplasma phagocytophilum</i> and <i>Borrelia burgdorferi</i>, and PCR for <i>B burgdorferi</i> antigen in both cats. Case 1 was also assessed by PCR for <i>Bartonella henselae</i> antigen and case 2 was assessed for <i>Dirofilaria immitis</i> by serology. All infectious disease tests, other than for <i>B burgdorferi</i>, were negative. Case 1 was diagnosed with Lyme carditis based on marked bradydysrhythmia, positive <i>B burgdorferi</i> serology, a structurally normal heart and clinical resolution with appropriate treatment with a 4-year follow-up. Case 2 was diagnosed with Lyme carditis based on marked bradydysrhythmia and positive <i>B burgdorferi</i> PCR; however, this cat had structural heart disease that did not resolve with treatment.<h4>Relevance and novel information</h4>This small case series describes two <i>B burgdorferi</i> positive cats presenting with newly diagnosed cardiac abnormalities consistent with those found in humans and dogs with Lyme carditis. Both cats were asymptomatic as perceived by their owners; the arrhythmia was detected by their veterinarians.

Item Type: Article
Uncontrolled Keywords: Borrelia burgdorferi, Lyme disease, Lyme carditis, bradyarrhythmia
Depositing User: Symplectic Admin
Date Deposited: 22 Sep 2020 15:01
Last Modified: 18 Jan 2023 23:31
DOI: 10.1177/2055116919898292
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3102183