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Possible sinoatrial node dysfunction in a 6-month-old domestic shorthair cat
Florence Hillen1, Laurent Locquet2
1School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, UK.
JFMS Open Reports
|December 9, 2024
Summary
Sinoatrial node dysfunction (SND) was suspected in a young cat, an unusual occurrence given its rarity in felines. This case highlights the importance of pre-anesthetic ECGs for detecting subtle cardiac abnormalities in immature animals.
Area of Science:
- Veterinary Cardiology
- Feline Medicine
- Electrocardiography
Background:
- Sinoatrial node dysfunction (SND) is uncommon in cats, with most reported cases in older dogs and humans.
- This study investigates a suspected case of SND in a 6-month-old domestic shorthair cat, an unusual demographic for this condition.
Observation:
- A 6-month-old cat presented for routine procedures exhibited a lower than normal heart rate and frequent ventricular escape beats on ambulatory ECG monitoring.
- Clinical examination was unremarkable, with subtle signs of stress noted, underscoring the limitations of physical assessment in diagnosing cardiac issues.
Findings:
- Ambulatory ECG revealed sinus rhythm with a mean heart rate of 98 bpm, significantly lower than typical for hospitalized cats.
- Ventricular escape beats were frequent, suggesting sinoatrial node dysfunction (SND) or increased vagal tone.
Implications:
- This case suggests SND may occur in immature cats, challenging the current understanding of its typical patient profile.
- Highlights the critical role of pre-anesthetic electrocardiogram (ECG) in identifying subtle cardiac abnormalities, even in young animals.
- Emphasizes the need for further research into the prevalence and presentation of SND in younger feline populations.
