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* aortic stenosis
 #248207  
  daiguren - 12/02/07 02:34
 
  how does pheylephrine decrease the murmur in AS and amyl nitrite increase the murmur?
 
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* Re:aortic stenosis
#1071822
  prayforthebest - 12/02/07 02:40
 
  afterload increases with phenlephrine less blood pumped out of the heart, more blood in the heart hence AS murmur intensity decreases. Opposite for amyl nitrite.  
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* Re:aortic stenosis
#1071843
  darkhorse - 12/02/07 04:39
 
  AS murmur is dependent on aortic gradient....normally pressure is high on the cardiac side of aortic valve and low on the aorta side.....phenylephrine causes vasoconstriction...thereby increses peripheral vascular resistance....so increses the pressure on the aorta.....thereby decreasing the gradient...so intensity of murmur decreases....and the reverse happens with amyl nitrate being a vasodilator  
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* Re:aortic stenosis
#3390553
  aliston - 10/15/20 09:47
 
  Many live with the debilitating symptoms of severe aortic stenosis, impacting their quality of life, adding considerable costs to the healthcare system.  
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* Re:aortic stenosis
#3390554
  aliston - 10/15/20 09:48
 
  https://hopeforhearts.com.au/aortic-stenosis/symptoms/  
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