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Patho

Heart failure & shock

TermDefinition
Preload The volume the heart chambers has to pump
Afterload The resistance the chambers have to push against to eject blood
Contractility How forceful the chambers squeeze blood
Cardiac Output The volume of blood the heart pumps
Ejection Fraction (EF) (%) of blood ejected from the left ventricle (LV) during systole (normal 60-80%)
Stroke volume (SV) actual (ML) volume of blood ejected from the LV during systole
Heart Failure Inability of the heart to maintain sufficient cardiac output to optimally meet the metabolic demands of tissues and organs
Left-Sided Heart Failure Left Ventricular infarction. HTN. Backward and Forward Effects.
Right sided heart failure Usually caused by Left-sided HF. May be caused by lung disorders. Congestion of blood BEHIND the failing right ventricle
Shock MOMENTARY act in a life threatening situation.When the cell does not have adequate O2 and nutrients, it is unable to metabolic needs
Cardiogenic: Type of shock that's is ventricular dysfunction
Obstructive Type of shock where the heart is prevented from pumping
Hypovoemic Type of shock that is inadequate blood volume
Distributive Type of shock that's vasodilation
Neurogenic Shock Often transitory. Depression of medulla or spinal cord
Septic Shock Common cause of ICU death. Severe Inflammatory reaction. Bacteremia.
Created by: whitneydpugh