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Forward to Regurgitant Flow Ratio

6489 Views 10 Replies 7 Participants Last post by  angermngment, 
F
this is one of the questions of uw...but i cudnt understand the explanation..so plz guys help me wid dis one-:toosad:

A 46 yr old Caucasian female presents to ur office becoz of easy fatiguability n exertional dyspnea. Auscultation of heart reveals a diminished first heart sound and an apical holosystolic murmur radiating to d axilla. Lungs have bibasilar crackles. There is no elevation of JVP or peripheral edema. Which of d following wud most likely increase forward to regurgitant volume ratio in this patient?

A. Decreasing LV preload
B. Increasing LV contractility
C. Decreasing LV afterload
D. Decreasing heart rate
E. Increasing left ventricular volume
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A
I have a question to you guys. After reading some of the responses, I was just a little curious, because I dont remember the physio too well.


If you slow down heart rate, are you also increasing preload, because you are giving the ventricles more time to fill?

If you are doing that, you are keeping cardiac output roughly the same as it was at a higher HR. Because CO = SV X HR


Just a little confused.

Also, if you give a selective beta blocker, it is slowing HR, but how is BP decreasing?
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