Tachycardia is the increase in the sinus rhythm of the heart in a medium-sized dog to an index of more than 160 beats per minute. In giant breeds - it's more than 140 strokes, in the toes - more than 180 beats, and in puppies - in a minute more than 220 strokes.
Rapid rhythm reduces the time of filling the chambers of the heart with blood. This leads to disorders of coronary blood flow, as well as an increase in the need for oxygen. This is the most common heart rhythm disorder in dogs who have recently undergone surgery, as well as reactions to different types of exercise.
The causes of tachycardia in dogs can be physical:
- Active loads,
- Limitation of motor functions.
- Acute heart failure ,
- Chronic lung diseases,
- The penetration of fluid into the chest cavity,
- A thrombus in the lung,
- Low blood pressure .
Provoke tachycardia can inflammations, drugs for the treatment of thyroid disorders, pregnancy.
Symptoms of tachycardia in dogs
If the tachycardia is caused by a temporary overexcitation of a healthy animal after an active physical exertion, then it will not have clinical symptoms. The dog is just breathing heavily through the mouth, and her heart is beating fast. But it quickly passes in a state of rest.
With tachycardia due to heart disease, the dog may have weakness, and when forced to carry out physical activities - loss of consciousness. If the main disease is acute heart failure or anemia, paleness of mucous membranes is observed. A fever is also possible. In addition , cough and shortness of breath may occur .
Treatment of tachycardia in dogs
First, you need to diagnose a tachycardia that occurs suddenly. To do this, the veterinarian conducts a thorough examination, you need a urine test and a biochemical blood test, counting blood cells. This is necessary to detect organ disorders or blood infection.
X-ray examination of the chest can reveal tumors or heart diseases. An electrocardiogram can show abnormalities in the ability of the heart to contract. Ultrasound is useful for assessing the condition of the adrenal glands. After confirming the diagnosis, the main diseases must first be treated. During treatment, you need to take care of the dog, you may need to limit the activity.