Therefore the ventricle receives

Therefore the ventricle receives more time for acceleration before the mitral valve will be closed. 3. How blockade of the left leg of a ventriculonector influences loudness of a mitral component? As a rule, at blockade of the left leg the mitral hoodia diet component becomes more silent, because: And. The relation dP/dt in an early phase of reduction at such blockade is often lowered, it is probable, because initial carrying out of impulse occurs almost exclusively in an interventricular septum. Hence, the left ventricle great bulk does not participate in reduction (i.e. in the phase of reduction previous occurrence of a mitral component). . The beginning of reduction of a left ventricle can be late, thanks to what blockade of the left leg renders the same effect, as elongation of interval PR. Valval heart diseases and loudness of a mitral component 1. When at an aortal stenosis the silent mitral component of the first tone is auscultated? It has been shown, that if the systolic gradient exceeds 50 mm hg contractility of a left ventricle decreases, especially at patients is more senior 40 years. 2.
How at a mitral stenosis the gradient of pressure arising in the end of a diastole on the mitral valve influences loudness of a mitral component? Why? It enlarges loudness of a mitral component. The matter is that in connection with a high pressure in the left auricle, framing in the end of a diastole, to a left ventricle the high pressure before it can close the mitral valve is required to develop a gradient of pressure even more. Hence, before closing of the mitral valve the left ventricle receives more time for acceleration of growth of pressure. The note: At a chronic cardial compression loud first tone if there is the calcareous infiltration of an atrioventricular sulcus framing effect of "an external mitral stenosis can be auscultated. 3. How rather rigid mitral valve (for example, at a mitral stenosis) influences a timbre of a mitral component? Why it occurs? The rigidity of the mitral valve does a mitral component of the first tone short and clicking (i.e. leads to "closing snap" occurrence [closing snap]). The resistance to the moving rendered and soldered edges of a cusp, forces kept flexibility the central part ("paunch") of a forward cusp to evaginate upwards like a clapping sail. Notes: And. The free central part ("paunch") of a back cusp busty alli usually has rather small sizes if only there is no superfluous growth of its tissue (as at a syndrome the mitral valve). Hence, the basic contribution to occurrence of a clicking mitral component is brought by a forward cusp. . When there is a fibrosing of pork artificial valves as a part of the first tone high frequencies start to dominate. Century If the centre of a forward cusp became rigid and rigid owing to a fibrosis or the clicking mitral component of the first tone is not auscultated. 4. How loudness of a mitral component changes at a mitral stenosis if the atrial fibrillation simultaneously takes place? In such situation three types of changes can be observed, at least. Type 1. If the mitral stenosis is expressed slightly, though after short diastoles the mitral component and becomes more silent (as at not changed valve), the tendency to augmentation of loudness of a mitral component after long diastoles is expressed to a lesser degree in comparison with norm. Type 2. If the mitral valve strongly and (that is there is no opening click), intensity of a mitral component of last and penultimate intervals RR (accordingly thanks to effects and postextrasystolic are entirely defined certainly-diastolicheskim by left ventricle volume, and also in). Thus, the first tone that becomes louder, than more for a long time the previous diastole. Type 3. If the mitral valve moderately , loudness of the first tone inversely proportional duration of the previous diastole (that is the more shortly previous interval RR, the more loudly a mitral component because its intensity depends on an is final-diastolic gradient of pressure between the left auricle and a left ventricle). Mitral component of the first tone at a mitral regurgitation 1. Than duration a diastolic gradient of pressure on the mitral valve, caused by a fast blood flow through the left atrioventricular aperture (for example, at a mitral regurgitation) differs from that at a mitral stenosis? The fast blood flow at a mitral regurgitation can frame a pressure gradient only in the beginning and in the middle of a diastole while the valve even at smaller, than in norm, a blood flow frames a pressure gradient on the mitral valve during all diastole. (The gradient illustration on the mitral valve is resulted on p. 382). 2. Whether the mitral component is loud or silent at a mitral regurgitation? At the isolated mitral regurgitation approximately in half of cases the silent mitral component is auscultated. If left ventricle function the mitral component can be loud thus is not broken.