title: The static electrocardiogram in clinically healthy, anesthetized, zoo-kept black-tailed prairie dogs (Cynomys ludovicianus).
abstract: OBJECTIVE
  The goal of this study was to evaluate the static electrocardiograms of clinically healthy black-tailed prairie dogs (Cynomys ludovicianus), and suggest normal values.
  
  
  METHODS
  Thirteen clinically healthy black-tailed prairie dogs were included in the study. They were anesthetized for physical examination, and complete laboratory data including troponin I concentration, thoracic radiographs, echocardiograms, and static ECG were recorded.
  
  
  METHODS
  Static electrocardiograms were recorded using standard, six-limb leads from each of the 13 apparently healthy prairie dogs. Each prairie dog was anesthetized with isoflurane via facemask. Electrocardiograms were recorded in right lateral recumbency. The data were retrospectively analyzed. Lead II was used for waveform analysis.
  
  
  RESULTS
  The median heart rate was 250 bpm (range 147-320). Median P-wave amplitude was 0.05 mV (range 0.01-0.06) and P-wave duration was 0.03 s (range 0.02-0.03). The PR interval was 0.06 s (range 0.04-0.06). The R-wave amplitude was 0.5 mV (range 0.1-1.15) and the QRS duration was 0.02 s (range 0.02-0.03). The QT interval was 0.12 s (range 0.1-0.14). Sixty-two percent of the QRS complexes were of Rs configuration.
  
  
  CONCLUSIONS
  Static electrocardiograms can be performed and evaluated in anesthetized prairie dogs. This report provided normal values in clinically healthy black-tailed prairie dogs.
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, 1800 Denison Avenue, Manhattan, KS 66506, USA. Electronic address: jthomason11@vet.k-state.edu.
authors.forename: Justin D
authors.initials: JD
authors.lastname: Thomason
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, 1800 Denison Avenue, Manhattan, KS 66506, USA.
authors.forename: David
authors.initials: D
authors.lastname: Eshar
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, 1800 Denison Avenue, Manhattan, KS 66506, USA.
authors.forename: Christy
authors.initials: C
authors.lastname: Zimmer Coyle
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, 1800 Denison Avenue, Manhattan, KS 66506, USA.
authors.forename: Sasha S
authors.initials: SS
authors.lastname: Thomason
mesh_terms: D000768:Anesthesia, General / Q000662:veterinary*; D018685:Anesthetics, Inhalation / Q000008:administration & dosage / Q000494:pharmacology*; D000818:Animals; D000836:Animals, Zoo; D004562:Electrocardiography / Q000662:veterinary; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D008297:Male; D012016:Reference Values; D012589:Sciuridae / Q000502:physiology*
chemical_list: D018685:Anesthetics, Inhalation
keywords: Anesthesia; Dilated cardiomyopathy; ECG; Waveforms