Stenosis = problem in
opening the valve
Regurgitation = problem in closing the valve
Need to know where valves are heard best – right 2ndICS (aortic valve), left 2nd ICS (pulmonic), left parasternal border (tricuspid), apex (mitral) – this isn’t necessarily where the valve is, but where the noise is heard the best.
• STENOSIS MURMURS: → problem in OPENING the valve
In SYSTOLE
Who is opening
in systole = aortic and pulmonic valves = therefore, murmurs of aortic
stenosis and pulmonic stenosis are occurring in systole.
In DIASTOLE
Who is opening in diastole = mitral and tricuspid valves are opening = therefore, murmurs of mitral stenosis and tricuspid stenosis are occurring in diastole
• REGURGITATION MURMURS: → problem in CLOSING the valve
In SYSTOLE
Who is closing in systole = mitral and tricuspid valves = therefore, murmurs of mitral regurgitation and tricuspid regurgitation are occurring in systole.
In DIASTOLE
Who is closing in diastole = atrial and pulmonic valves are closing = therefore, murmurs of atrial regurgitation and pulmonic regurgitation are occurring in diastole
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