Relationships between heart rate and age, bodyweight and breed in 10,849 dogs

Authors

  • M. J. Hezzell,

    1. Department of Veterinary Clinical Sciences, The Royal Veterinary College, North Mymms, Hertfordshire
    Search for more papers by this author
    • Dr. M. J. Hezzell's current address is Matthew J Ryan Veterinary Hospital of the University of Pennsylvania, 3900 Delancey Street, Philadelphia, PA 19104, USA

  • K. Humm,

    1. Department of Veterinary Clinical Sciences, The Royal Veterinary College, North Mymms, Hertfordshire
    Search for more papers by this author
  • S. G. Dennis,

    1. Department of Veterinary Clinical Sciences, The Royal Veterinary College, North Mymms, Hertfordshire
    Search for more papers by this author
    • Mr. S. G. Dennis’ current address is North Downs Specialist Referrals, The Friesian Buildings 3 & 4, The Brewerstreet Dairy Business Park, Brewer Street, Bletchingley, Surrey RH1 4QP

  • L. Agee,

    1. Department of Veterinary Clinical Sciences, The Royal Veterinary College, North Mymms, Hertfordshire
    Search for more papers by this author
    • Ms L. Agee's current address is Banfield Pet Hospital, 11066 Pecan Park Blvd., Cedar Park, TX 78613, USA

  • A. Boswood

    1. Department of Veterinary Clinical Sciences, The Royal Veterinary College, North Mymms, Hertfordshire
    Search for more papers by this author

Errata

This article is corrected by:

  1. Errata: Relationships between heart rate and age, bodyweight and breed in 10,849 dogs Volume 54, Issue 8, 440, Article first published online: 23 July 2013

Abstract

Objectives

To evaluate relationships between heart rate and clinical variables in healthy dogs and dogs examined at a referral hospital.

Methods

Clinical data were extracted from the electronic patient records of a first opinion group (5000 healthy dogs) and a referral hospital (5849 dogs). Univariable and multi-variable general linear models were used to assess associations between heart rate and clinical characteristics. Separate multi-variable models were constructed for first opinion and referral populations.

Results

In healthy dogs, heart rate was negatively associated with bodyweight (P<0·001) but was higher in Chihuahuas. The mean difference in heart rate between a 5 and 55 kg dog was 10·5 beats per minute. In dogs presenting to a referral hospital, heart rate was negatively associated with bodyweight (P<0·001) and the following breeds; border collie, golden retriever, Labrador retriever, springer spaniel and West Highland white terrier and positively associated with age, admitting service (emergency and critical care, emergency first opinion and cardiology) and the following breeds; Cavalier King Charles spaniel, Staffordshire bull terrier and Yorkshire terrier.

Clinical Significance

Bodyweight, age, breed and disease status all influence heart rate in dogs, although these factors account for a relatively small proportion of the overall variability in heart rate.

Ancillary