Heart as a bell
The chlopnove defects are the most common kardiologickym problem dogs, mainly small breeds. There is a deformation of valve points, the surface of the valve svrastuje and lose their elasticity. They then conclude completely passes between the various sections of the heart and the heart contractions and blood flow the opposite direction through the valve nedolehajici and thus significantly reduces the efficiency of cardiac work. The causes and mechanism of this degeneration valves are not precisely known. Consideration is being given as well as genetically contingent diseases. Most are so-called chondrodystroficka predisposed breeds of dogs, which include the dachshund. Chlopnovych occurrence of defects increases with age.For dogs over nine years is demonstrated that heart disease to 25% of patients.
The main function of the heart include the maintenance of blood pressure and body tissues krveni ensuring that all parts of the body receive sufficient quantities of oxygenated blood. The heart acts as a pump. It is divided into right and left part, and they are both subdivided into the hall and chamber. Odkyslicena blood from the body returns to the right atria is prepumpovana on the right and the Comoros into the lungs. In the lungs there is blood on the oxygen enrichment of air vdechovaneho and the blood oxygenation returns to left heart atria, continues to the left heart and the Comoros is vypumpovana in the body circulation. Heart Does Not the whole time. First, download the hall and the download goes to the Comoros,So you download a little later. The chamber and hall, and also between the heart and major blood vessel, they are based, are the valves that the contractions of individual heart sections prevent back flow of blood. When the left heart atria of the lung blood inflow valve is opened between the hall and chamber and muscle contractions in blood flow to the hall Comoros. In fulfillment of Comoros, on the other hand closes valve between the left chamber and the left hall and chambers of muscle contractions in the flow of blood into the body and not return back to the hall. Thus, simply described, a healthy heart works.
The most commonly affected valve in a dog's heart is the mitral valve separates the left hall and chamber.Insufficiency of this valve is no longer between the second and third year of life between the dog and the fifth to seventh year of becoming audible murmur. If the mitral valve concludes the passage between the left chamber and hall, occurs when contractions Comoros left to recover the flow of blood into the left atria. But there has to come further oxygenation of the blood and lung at a meeting two protismernych flow of blood creates turbulence and audible murmur. Hall is at this moment in volume overloaded, and its flesh is excessively handled. When significant damage to mitral valve is pumped back large amounts of blood in the atria and the blood can not flow from the lungs, which consequently will increase the pressure in small blood vessels. At the same time, flows of less oxygenated blood to the body, talking about the so-calledreduced cardiac development, which results in lowering of blood pressure in the body. If mestnani degree of blood in the lungs reaches a certain level, the fluid transfer from blood vessels into lung tissue and lung and later flooding cellars, a so-called pulmonary edema. Higher pressure in the lungs is a barrier to blood flow from the right half of heart.
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