With Complete Solutions
Overview
*CHF is prevalent
*one of the most common reasons for hospital admission
*half of deaths from heart disease are d/t end stage CHF
*20% of AMIs develop CHF
*chronic CHF creates "revolving door" pts
What is CHF?
*stands for Congestive Heart Failure
*a clinical condition that occurs when the heart fails to function
as an effective pump and therefore does not meet the body's
, needs for oxygen
*also see diastolic vs systolic failure (Lewis pg 767)
Basic Principles of CHF
*any condition that interferes with efficiency of the heart to
pump will lead the ↓CO
*CO is dependent on the relationship between HR and SV
^SV is the amt of blood ejected from the heart with each systole
What determines cardiac output?
*CO = HR x SV
*HR controlled by ANS
*SV determined by 3 factors: