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35 Cards in this Set
- Front
- Back
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AHA BP for <49
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140/90
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AHA BP for >50
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160/95
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Formula for MAP
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DBP+1/3 pulse pressure
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Sends info from the baroreceptors to the vasomotor center, cardioacc+inhib centers
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CN 9+10
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Renal supply of the arteries
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Renal
Segmental Interlobar Arcuate Interlobular Afferent Efferent Peritubular |
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3 things that cause renin release
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Glomerular BP < 90
SNS Decreased Na load |
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How does Ang 2 restore BP
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Vasoconstriction
Aldosterone |
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Form of HTN caused by excessive secretion of Renin or excessive sensitivity to Renin
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Renal vascular HTN
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HTN caused by excessive inflammatory fibrotic changes to the kidney itself
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Renal Parenchymal HTN
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HTN that results from greater than 60% destruction of the kidneys
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Volume loading HTN
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Causes Cushing's syndrome
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tumor in the fasiculate
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Where is aldosterone produced
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adrenal cortex
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Three types of adrenal tumor diseases that cause HTN
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Pheochromocytoma
Cushing's Hyperaldosteronism |
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What is PVR like in primary HTN
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always increased
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What is CO like in primary HTN
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elevated early in the disease
normal with chronic HTN |
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Inactivates angiotensin
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Angiotensinase
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Type of HTN that is related to the kidney's inability to produce prostaglandins
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Renal Parynchemal HTN
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Type of HTN that includes pyelonephritis, chronic glomerular nephritis
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Renal Parynchemal HTN
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How do oral contraceptives cause HTN
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they increase production of angiotensinogen
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Two causes of HTN in pregnancy
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Thickening of glomerular membrane
Toxic substance released from placent |
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HTN caused by a tumor of the bone marrow
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polycythemia vera
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What are the three theories about the cause of HTN
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Neurogenic
Arterial Pressure-renal output Regulatory imbalance theory |
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Stage of shock syndrome in which the body is able to compensate somewhat
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Nonprogressive
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Stage of shock syndrome in which inadequate tissue perfusion begins
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Progressive
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Bodies response to a 30-45% blood volume loss
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CNS ischemic response
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Normal MAP
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90
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Major risk factor for HTN
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CAD
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What type of HTN is most common diastolic or systolic
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diastolic
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HTN in which the cause is unknown
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essential
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Cells that act as baroreceptors in the kidney and secrete renin
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juxtaglomerular cells
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Specialized sodium sensing cells
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macula densa
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Aldosterone's MOA
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retention of Na and H20
vasoconstriction |
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BP formula
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CO X PVR
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What are three vasodilators of the kidney
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Histamine
Prostaglandin Dopamine |
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Where is the tumor in pheochromocytoma and what does it produce in excess
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adrenal medulla
catecholamine |
