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11 Cards in this Set
- Front
- Back
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What would cause increases in Afterload? Decreases?
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Increase: Hypertension, dilated ventricle; Decrease: Increased wall thickness
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What is Afterload?
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The resistance a ventricle must overcome to empty its contents.
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Increasing the length of cardiac muscle increases the ____________________
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force of contraction (insuring the heart will pump a volume of blood equal to what it receives)
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Increased HR ___________ preload
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increases
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Peripheral edema increases ________________
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preload (venous pressure)
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What does increasing inotropy do to Stroke Volume and Cardiac Output?
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increases both
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What effect does reduced diastolic compliance have on Stroke Volume and Cardiac Output?
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decreases both
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Activated Beta-1 receptors have _______ inotropic effects
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positive
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cardiac glycosides increase the buildup of Na+ causing the Na+/Ca+ exhanger to come to a halt. This __________ HR
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increases
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Negative inotropes are ______ channel bloeckers and cause ______ extracellular Ca++ and _________ extracellular Na+
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Ca++, low, high
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Sympathetics _____ funny channel activity and _______ the slope of diastolic depolarization
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increase, increase
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