Step II Hocm

[zenna]

I thought I understood this in class but when I self studying now I don't understand why decreasing afterload should increase the obstruction in HOCM ( hypertrophic obstructive cardiomyopathy)?

 

[Fuzuli]

I thought I understood this in class but when I self studying now I don't understand why decreasing afterload should increase the obstruction in HOCM ( hypertrophic obstructive cardiomyopathy)?

What will happen to LV end-diastolic volume if afterload decreases? A decrease in afterload will decrease LVEDV (basically, there will be less blood in the left ventricle)

Would the hypertrophied septum will come closer or be further apart if there's less blood in the left ventricle? If they come further closer, will this increase or decrease the obstruction? Therefore, any manuever that decreases LVEDV (decreased preload, decreased afterload, increased contraction) will increase the obstruction seen in HOCM.

 

[zenna]

THANKS👍