High blood pressure is generally caused by other conditions e.g. kidney damage or hormonal imbalances which occur more frequently in old age. By measuring blood pressure such issues can be detected at an early stage and treated before further damage is caused. On the one hand the heart is at risk as it has to pump against the increased resistance. This can lead to circulatory problems, frailties, breathing difficulties and movement disorders. On the other hand, the kidneys are often affected by the consequences of high blood pressure.
The vet can prescribe various medicines for the treatment of cats: for example a vasodilator to help in acute cases, or a beta-blocker for long-term reduction of blood pressure, which is similar to what is administered to heart patients in human medicine. Finally, there is the possibility to positively influence the condition by providing the cat with a low-salt diet and, in the case of overweight cats, reducing weight.