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Definition
| influnce the force of contraction of heart |
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| influence rate of contraction of heart |
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Definition
| influence rate of conduction of electrical impulses |
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Definition
| efficiency of the heart as a pump, measured in liters/minute |
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Definition
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Definition
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| SNS-> catecholoamine release -> B1 stimulation -> increased hr and contractility |
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Term
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Definition
| amount of blood pumped out with each beat, normal value = 70 mls, determined by preload, afterload, contractiliy |
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Term
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Definition
| volume achieved during diastolic filling of ventricles, depended on venous return |
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Term
| what factors of drugs will increase preload? |
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Definition
| -increased fluids, vasoconstrictors, increasing venous return |
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Term
| what factors or drugs will decrease preload? |
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Definition
| lose volume, diuretics, dilation of blood vessels |
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Term
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Definition
| force, resistance, how hard heart works to get blood to periphery (depends on blood pressure and peripheral resistance) |
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Definition
| force of contraction. Inotropic response |
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Term
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Definition
| effor the heart expends to pump blood, as increases so does O2 demands (hypertension, increased HR and catecholamines) |
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Term
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Definition
| pressure sensitive receptors in the walls of blood vessels and ehart and respond to changes in strech of walls. Fall in BP -> increase HR and vasoconstric (reflex tachycardia) |
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