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Related Experiment Videos

Electrocardiogram abnormalities in captive chimpanzees (Pan troglodytes).

Cynthia J Doane1, D Rick Lee, Meg M Sleeper

  • 1Alamogordo Primate Facility, Holloman Air Force Base, Alamogordo, New Mexico, USA. cynthia.doane2@us.crl.com

Comparative Medicine
|January 16, 2007
PubMed
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Cardiovascular disease is a major cause of death in captive chimpanzees. This study found that male chimpanzees aged 20-39 with structural heart disease had higher rates of cardiac arrhythmias, and ventricular arrhythmias increased mortality.

Area of Science:

  • Veterinary Cardiology
  • Primate Health

Background:

  • Cardiovascular disease is the primary cause of mortality in captive chimpanzees.
  • Limited data exists on the prevalence and causes of heart disease in this species.

Purpose of the Study:

  • To investigate the prevalence and risk factors of cardiac arrhythmias in captive chimpanzees.
  • To determine the association between cardiac arrhythmias and mortality in this population.

Main Methods:

  • Retrospective review of physical examination records and electrocardiogram abnormalities in 265 common chimpanzees (Pan troglodytes).
  • Analysis of cardiac arrhythmia diagnoses over a 24-month period.
  • Statistical comparison of incidence and mortality rates based on demographic and clinical factors.

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Main Results:

  • 34 chimpanzees were diagnosed with cardiac arrhythmias, including ventricular arrhythmias, supraventricular arrhythmias, conduction disturbances, mixed arrhythmias, and bradycardia.
  • Higher incidence of cardiac arrhythmia was observed in male chimpanzees, those aged 20-39 years, and those with structural heart disease.
  • Ventricular arrhythmias were significantly associated with increased mortality.

Conclusions:

  • Age, male gender, and structural heart disease are identified as risk factors for cardiac arrhythmias in captive chimpanzees.
  • Ventricular arrhythmias represent a significant risk factor for mortality in this population.
  • Further research into chimpanzee cardiac health is warranted.