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Механизмы возникновения шумов при аускультации сердца

Механизмы возникновения шумов при аускультации сердца

 

 

 

 

 

 

 

 

 

 

 

 

Murmur Production Mechanism Guide

  Diastole Systole
Normal
механизм шумов1
Normal Diastole 
- Atrioventricular valves (tricuspid and mitral) are open.  
- Semilunar valves (pulmonic and aortic) are closed.
механизмы шумов1систола
Normal Systole 
- Atrioventricular valves (tricuspid and mitral) are closed. 
- Semilunar valves (pulmonic and aortic) are open.
Aortic Valve Murmurs механизмы шумов2диастола Aortic Insufficiency 
- Turbulence caused by the backflow of blood as the valve is partially open.
механизмы шумов2систола Aortic Stenosis, Aortic Sclerosis, LV Flow Obstruction 
- Turbulence caused by the flow of blood through a narrowed valve.  
- Murmur radiates to carotids.
Pulmonic Valve Murmurs механизмы шумов3диастола Pulmonic Regurgitation 
- Turbulence caused by the backflow of blood as the valve is partially open.  
- Heard along left sternal border.
механизмы шумов3систола Pulmonic Stenosis 
- Turbulence caused by the flow of blood through a narrowed valve.
Tricuspid Valve Murmurs механизмы шумов4диастола Tricuspid Stenosis 
- Turbulence caused by the flow of blood through a narrowed valve.
механизмы шумов4систола Tricuspid Regurgitation 
- Turbulence caused by the backflow of blood into the right atrium because of the failure of the valve to close properly.  
- May radiate to the apex via papillary muscles.
Mitral Valve Murmurs механизмы шумов5диастола Mitral Stenosis 
- Turbulence caused by the flow of blood through a narrowed valve.
механизмы шумов5систола Mitral Regurgitation 
- Backflow of blood into the left atrium over an abnormal mitral valve is associated with a systolic murmur.  
- May radiate to axilla.
Atrial and Ventricular Septal Defects механизмы шумов6диастола Atrial Septal Defect 
- Systolic murmur is due to increased blood flow through the pulmonic outflow tract. 
- Mid-diastolic rumble is due to increased blood flow through tricuspid valve.
механизмы шумов6систола Ventricular Septal Defect 
- Flow of blood from higher pressure chamber (left ventricle) to the lower pressure chamber (right ventricle) causes a systolic murmur.  
- Murmur is usually holosystolic.
Patent Ductus Arteriosus Возможно, формат этой картинки не поддерживается браузером. Patent Ductus Arteriosus 
- A continual connection between the aorta and pulmonary artery causes a pressure differential resulting in a continuous turbulence causing a diastolic murmur.
Возможно, формат этой картинки не поддерживается браузером. Patent Ductus Arteriosus 
- A continual connection between the aorta and pulmonary artery causes a pressure differential resulting in a continuous turbulence causing a systolic murmur.