Anesthesia Sensitivity in Brittany Spaniels

No. That designation typically applies to sighthounds and a few other breeds with unusual body composition. A healthy Brittany undergoes standard anesthetic protocols without special breed-specific drug adjustments.

Not necessarily. It means your vet will likely recommend a pre-anesthetic cardiac evaluation and choose drugs and monitoring suited to the murmur's severity, rather than avoiding anesthesia entirely for routine procedures.

Yes, with planning. Vets generally avoid certain sedatives known to lower seizure threshold and monitor more closely during recovery, since the stress and drug exposure of anesthesia can occasionally trigger a seizure in a predisposed dog.

Standard bloodwork checking organ function is typical for any dog, and a vet may add a cardiac exam or echocardiogram if a murmur has been noted, or discuss seizure history if epilepsy is documented.

Most healthy dogs are alert and near-normal within a few hours and fully back to baseline energy within 24 hours, though grogginess the evening of a procedure is completely normal.

Age itself isn't a strict contraindication, but older dogs are more likely to have developed a heart murmur or other condition that changes the anesthetic plan, which is why senior pre-anesthetic workups tend to be more thorough.

It's a decision to make with your vet, not a strict yes or no. Bloodwork catches issues that don't show up on a physical exam, and for a dog with any documented cardiac or seizure history, skipping it removes information your vet would otherwise use to plan safely.