cardio: left sided heart failure Flashcards
hear failure is when:
the heart cant pump enough blood to meet demands
diastolic heart failure
Low stroke volume due to low total volume, niormal ejcetion fraction but there is abnormal filling of the ventricle so not enough to pump out
systolic heart failure
Stroke volume ejection fraction is small, normal total volume- stoke volume is small
left sided heart failure is usually casued by:
systolic: pumping
causes of Left sided heart failure in systolic
- ischemic heart disease
- long stangin hypertension
- dilated cardiomyapothy
heart failure: ischemic heart disease
systolic
casues damage to the myocardium, cant contract forecefully
- ischemic heart disease casued by atherosclerosis which damages myocardium
heart failure: long standing hypertension- systolic
systolic
- arterial pressure increaseg, making harder for left ventricle to pump blood out into hypertension systemic circulation
- hypertrophy occurs: muscle mass bulks up, greater demand for oxygen, so some muscles become weaker, weakened contraction
heart failure: dilated cardiomyopathy
systolic
heart chanmber dilates so that more blood can fill, stretch out muscle walls and get stronger contraction whch helps for a while but then eventually muscles thin so much that left sided heart failure occurs
heart failure: long standing hypertension: diastolic
diastolic
in hypertension, hypertrophy is concentric - moves into ventricular space so less room for filling causing heart failure
heart failure: aortic stenosis
diastolic
- casues concentric hypertrophy, naroowing of the aortic valve opening
heart failure: restrictive cardiomyopathy
diastolic
heart muscle gets stiffer and less comaoliant, cant stretch and fill
causes of Left sided heart failure in diastolic
- long standing hypertesion
- aortic stenosis
- hypertrophicmyopathy
- restrictive cardiomyopathy
heart failure: hypertrophic cardiomyopathy
a genetic cause of concentric hypertrophy
medicartion for left sided heart failure
ace inhibitors - dilate blood vessels
diruetics- can help reduce fluid build up and therefrore blood pressure