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Efficiency of Cont.
Contraction Efficiency
Question | Answer |
---|---|
What is the definition for "Efficiency of Contraction"? | measured as Blood OUTPUT from LEFT Ventricle |
What is the equation for Cardiac Output? | Cardiac Output = HR x SV = Liters per Minute |
What is the equation for Stroke Volume? | Stroke Volume = EDV - ESV |
What do EDV and ESV stand for? | End-Diastolic-Volume & End-Systolic-Volume |
What is EDV determined by? | "Preload" - Ventricularfilling time (HR), Venous return |
What is ESV determined by? | FORCE of Contraction - Health of muscle, Intrinsic STRETCH of Ventricle (EDV), ANS (+/- circulating Hormones) |
What is Stroke Volume? | the amount of Blood OUT of the LEFT Ventricle every contraction |
What is the Ejection Fraction? | SV/EDV - normally between 50-75% |