Hi stranger! Signing up for MypetMD is easy, free and puts the most relevant content at your fingertips.

Get Instant Access To

  • 24/7 alerts for pet-related recalls

  • Your own library of articles, blogs, and favorite pet names

  • Tools designed to keep your pets happy and healthy

or Connect with Facebook

By joining petMD, you agree to the Privacy Policy.

PetMD Seal

Heart Disease of the Sinus Node in Dogs




Only patients showing clinical signs need treatment, and only patients requiring electrophysiologic testing of the heart, or implantation of an artificial pacemaker will need to be hospitalized.


Dogs that do not respond to medical therapy, or have adverse medical side effects to therapy, and/or dogs with abnormally fast/abnormally slow heart rate syndrome will need to have an artificial pacemaker implanted. Attempts to manage an abnormally fast or abnormally slow heart rate syndrome medically, without prior pacemaker implantation, carry a significant risk of worsening the extremes of the abnormally fast or abnormally slow heart rate syndrome.


Living and Management


While your dog is healing from this condition, you will need to keep its physical activity to a minimum. Encourage rest in a quiet, non-stressful environment as much as possible, away from other pets or active children. Although therapy for SSS may seem to work at the beginning of treatment, medical therapy commonly does not work. The only alternative in these instances is surgical correction.



Related Articles

Shock Due to Heart Failure in Dogs
Cardiogenic shock results from profound impairment of cardiac function, leading to...
Heart Block (Complete) in Dogs
The heart's sinoartial node (SA) is very much like a control center, responsible...
Abnormal Heart Rhythm in Dogs
Search Abnormal Hearth Rhythm in dogs. Search Abnormal Heart Rhythm treatments, symptoms,...
  • Lifetime Credits:
  • Today's Credits:
Hurry Before All Seats are Taken!
Be an A++ Pet Parent! Take fun & free courses to earn badges & certifications. Choose a course»
Search dog Articles


Latest In Dog Nutrition

Pet Food Ingredients that Promote Longer Life
Pet foods, in order to promote a healthy long life, must be balanced and complete...
5 Reasons Life Stage Diets Help Improve Pet ...
Balanced and complete nutrition is important for any animal. However, the nutritional...
How Obesity May Shorten Your Pet's Lifespan
Obesity is a nationwide epidemic for our pets. Unfortunately, being obese can shorten...
Around the Web