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TYK35: Difference between revisions
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All of the following concerning cardiac physiology are true EXCEPT: | All of the following concerning cardiac physiology are true EXCEPT: | ||
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D. Arteriolar tone is the primary determinant of SVR | D. Arteriolar tone is the primary determinant of SVR | ||
<div class="mw-customtoggle-TYK_Answer" style="text-align: right; color:#0000ff">Click for Answer</div> | |||
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==Answer== | ==Answer== | ||
The answer is C. SVR (and SVRI) are calculated based on measured cardiac output, MAP and CVP. This is why some people don't care what the SVR and SVRI are as long as they know the BP and CO. The right ventricle is more sensitive to increases in afterload due to its relatively thin wall compared to the LV. This is a similar concept as why single RV will usually do worse long term than single LV patients. The equation for SVR is: SVR= 80 x (MAP-CVP/CO) | The answer is C. SVR (and SVRI) are calculated based on measured cardiac output, MAP and CVP. This is why some people don't care what the SVR and SVRI are as long as they know the BP and CO. The right ventricle is more sensitive to increases in afterload due to its relatively thin wall compared to the LV. This is a similar concept as why single RV will usually do worse long term than single LV patients. The equation for SVR is: SVR= 80 x (MAP-CVP/CO) | ||
==Notes== | ==Notes== | ||
<references /> | <references /> | ||
Pappenheimer, J. R., et al. "Role of cerebral fluids in control of respiration as studied in unanesthetized goats." American Journal of Physiology--Legacy Content 208.3 (1965): 436-450.[http://www.ncbi.nlm.nih.gov/pubmed/14264731] | |||
==Keywords== | ==Keywords== | ||
</div> | </div> | ||
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