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Risk factors that increase workload on the heart (ACS, HTN, Arrhythmias,…

- - - - Once the ventricle becomes dilated the EDV increases, as well as it loses its ability to effectively contract which causes and increase in ESV
        
        These changes lead to a decrease in CO
        
        The decrease in CO trigger compensatory mechanism, such as, RAAS, SNS, ADH, which cause peripheral vasodilation and fluid retention in the attempts to increase the blood return therefore the CO.
        
        Upon exertion, there is a decrease in CO due to incompetent contraction
        
        The increase space in the ventricles and decreased contractility lead to an increased EDV therefore reducing the space for filling
        
        The left ventricle is unable to accommodate the preload
        
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        Decrease CO triggers the compensatory mechanism which lead to peripheral vasoconstriction and fluid retention
        
        This increases the prelaod to the heart
        
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