Glossary of Cardiac Cycle
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- How is blood flow in the left vs. right side of heart?
- Equal - both is 5 L/min
- is pressure/resistance higher in pulmonary or systemic circulation?
- where is the
- tri = right AV valve
mitral = left AV valve
- What is the period between Mitral valve closing and Aortic valve opening?
- what happens during Systole?
- Ventricular contraction.
1. Isovolumetric contraction
2. Ventricular ejection
- Systole =
- ventricles contract
- Diastole =
- ventricles relax
- when are ventricles contracting?
- when are ventricles relaxing?
- what occurs between lub and dub heart sounds?
- SYSTOLE - period between mitral valves shutting and semilunar valves shutting.
- what are the 3rd and 4th heart sounds?
- 3rd = rapid ventricular filling during early diastole
4th = atrial systole (contraction) during reduced filling
- what is atrial systole?
- diastasis - reduced filling of the ventricles
- when is diastasis more important?
- during increased heart rates.
- what does stenosis cause?
- -narrowed valve opening
-pressure buildup behind valve
-murmur when valve open
- what does insufficiency cause?
- -abnormal valve closing
-regurgitation murmur when valve is closed.
- what abnormality is heard when a valve is open?
- what abnormality is heard when a valve is closed?
- what are 2 stenotic abnormalities of aortic valve?
- -Bicuspid Aortic valve
-Senile Aortic stenosis
- what is bicuspid aortic valve?
what is senile aortic stenosis?
- Bicuspid = congenital defect, narrow aortic valve restricts BF
Senile = stiff, calcified aortic valve
- what is a cause of mitral stenosis?
- bacterial rheumatic fever.
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