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Transvenous demand Pacemaker Treatment for intermittent complete Heart Block in a Cat.

S Forterre¹, J H Nürnberg, F Forterre

¹Clinic for small animals, Free University Berlin, Germany.

Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology

|December 17, 2008

Summary

A cat with heart block and hyperthyroidism experienced fainting spells. A pacemaker implantation successfully resolved these syncopal episodes, preventing recurrence over 18 months.

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Area of Science:

Veterinary Cardiology
Comparative Medicine

Background:

Recurrent syncopal episodes in cats can indicate serious underlying cardiac conditions.
Complete heart block leading to ventricular asystole presents a significant risk of sudden death.

Purpose of the Study:

To describe the successful implantation of a transvenous ventricular demand pacemaker system in a cat with complete heart block.
To evaluate the efficacy of pacemaker implantation in resolving syncopal episodes associated with bradycardia.

Main Methods:

A 13-year-old domestic shorthaired cat with documented intermittent ventricular asystole and hyperthyroidism underwent implantation of a unipolar transvenous ventricular demand pacemaker (VVIM) system.
The pacemaker lead was inserted via the jugular vein, tunneled subcutaneously, and connected to a generator placed in an abdominal pocket.

Main Results:

The implanted pacemaker effectively managed the complete heart block and ventricular asystole.
No syncopal episodes recurred during an 18-month follow-up period post-implantation.

Conclusions:

Transvenous pacemaker implantation is a viable and effective treatment for syncopal episodes caused by complete heart block in cats.
Pacemaker therapy offers a long-term solution for managing bradyarrhythmias and preventing syncope in feline patients.