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12 Cards in this Set
- Front
- Back
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What is blood pressure a product of?
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Cardiac Output (CO) and Total Peripheral Resistance (TPR)
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What is cardiac output a product of?
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Heart Rate (HR) and Stroke Volume (SV)
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What is stroke volume determined by?
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SV is determined by cardiac contractility, the venous return to the heart (which depends on blood volume and venous tone), and the resistance the left ventricle must overcome to eject blood into the aorta (i.e., the aortic pressure).
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What are least 4 systems that are directly responsible for blood pressure regulation?
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1. heart - supplies pumping pressure
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The accelerated atherosclerosis associated with hypertension may result in... ?
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Plaque formation and narrowing throughout athe arterial vasculature
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What is the most important component of vascular resistance?
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the degree of vessel narrowing
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Essential hypertension and secondary causes (structural or hormonal) of hypertension are important to identify! (not a question)
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Essential and secondary have require different therapy and secondary is often curable.
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Most common pharmacologic therapy for hypertension? (antihypertensives)
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diuretics, ACE inhibitors, angiotensin receptor blockers (ARBs), long-acting calcium channel blockers, and B-blockers
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Blocking an increase in calcium will ________ smooth muscle
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Relax
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Narrowing a vessel by 2X will ________ resistance by __X
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Increase, by 16X
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If you have symptoms when resting, your vessels are occluded by at least how much?
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80%
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Stenosis can cause what kind of flow, which can produce what clinical sign?
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turbulent flow is audible
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