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The heart has four chambers: two chambers at the top, the right and left atria; and two chambers on the bottom, the right and left ventricles. The right side of the heart collects blood from the body and pumps it into the lungs, where the blood is oxygenated. The oxygen rich blood is then collected by the left side of the heart, and from there it is pumped out into the body's various organs.
Congestive left-sided heart failure refers to a condition in which the left side of the heart is not able to push blood through the body efficiently enough to meet the metabolic needs of the body, and frequently results in blood pooling in the lungs. This is the most common type of congestive heart failure in dogs. Low blood output from the heart causes tiredness, exercise intolerance and fainting.
Muscle failure of the left ventricle (the left lower chamber of the heart):
Pressure overload of the left heart:
Volume overload of the left heart (the mitral valve on the left side of the heart, separating the left atrium from the left ventricle):
Difficulties filling the left heart with blood:
Heart beat rhythm disturbances:
Your veterinarian will perform a thorough physical exam on your pet, taking into account the background history, onset of symptoms and possible incidents that might have led to this condition. A blood chemical profile, complete blood count, urinalysis and an electrolyte panel will be ordered to check the underlying cause of the heart disease and its severity. Your veterinarian will also draw blood from your dog to check thyroid function.
Imaging studies can be used to gain a further understanding of your dog's heart condition. X-ray and ultrasound imaging may be used, as well as electrocardiogram (ECG, or EKG) recordings for examining the electrical currents in the heart muscles. These recordings may reveal any abnormalities in cardiac electrical conduction (which underlies the heart’s ability to contract/beat).
An in-depth examination of the properties of urine; used to determine the presence or absence of illness
a) A cavity in certain animals b) Term refers to a rear chamber in the heart or a cavity in the brain
The fold of membrane found between the left atrium and left ventricle
The amount of pressure applied by the blood on the arteries.
The superior chamber in an animal's heart.
A large blood vessel that transports blood out of the heart.
A record of the activity of the myocardium