The Rhodesian Ridgeback Club of the United Status (RCCUS)  has a lot of good health information:

Health Registries


Rhodesian Ridgeback Inherited Arrhythmia (RR IVA)

Please take time to learn about a devastating issue with our Ridgebacks (Inherited Arrhythmia (RR IVA)).

There is a study being done by Dr. Meurs  of NC State,  the following link provides an overview as well as several interesting webinars.

If interested, please join the Facebook group (Rhodesian Ridgeback Inherited Arrhythmia (RR IVA)) for the latest discussions.