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77 Cards in this Set
- Front
- Back
What are the 4 degrees of hypertension?
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1. Labile
2. Borderline 3. Chronic (benign) 4. Malignant hypertension |
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Labile BP is chaeracterized by its ___(daily and random) and ___
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variability
reactivity |
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Increase in BP by presence of medical personnel
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White coat Hypertension
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White coat Hypertension can give a ____ % increase in borderline hypertensive patients
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10-60
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Borderline BP
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140/90
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Degree of hypertension that results in premature death and disability if BP remains untreated
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chronic (benign)
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Degree of hypertension that is the silent killer
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chronic (benign)
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in chronic (benign) hypertension, death is usually due to ___
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atherosclerotic complications
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Most common form of hypertension
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chronic (benign)
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With Malignant hypertension, ___% die within 1 year if not treated
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80-90
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Swelling of the optic disc
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papilledema
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Form of hypertension that is associated with elevated R-A system
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Malignant hypertension
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Why is malignant hypertension associated with hypokalemia?
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aldosterone is released and has Na retention so K is thrown away
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most deaths from malignant hypertension are associated with ____
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target organ damage
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2 mechanisms that regulate BP
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1. SNS
2. Endocrine |
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BP is regulated through the SNS by a negative feedback system sensed by ____
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baroreceptors
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7 components of the endocrine system that affect BP
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1. catecholamines
2. renin--angiotensin-aldosterone system 3. ADH 4. Insulin-hyperinsulinemia-insulin resistance 5. Local hormone factors 6. ANH 7. Digitalis-like factor/Natriuretic factor/ouabain-like factor |
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What are the 4 local hormone factors that affect BP?
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1. Kinins
2. PG 3. EDRF, NO 4. Endothelin (EDCF) |
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What 3 hormones affect CO and TPR?
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1. catecholamines
2. renin-angiotensin-aldosterone system. 3. ADH (vasopressin) |
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ADH has ____ properties
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fluid retention
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ADH is released from the ___
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posterior pituitary
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Insulin/hyperinsulinemia/insulin resistance do 6 things:
1. Na retention called ____ 2. Stimulates ____ 3. Increases Vascular ____ 4. Effects many transport systems on ____ 5. With insulin resistance have elevated ___ and reduced ____ 6. Insulin is a _____ promoter |
1. antiatriuretic
2. SNS 3. responsiveness 4. VSM 5. LDL, HDL 6. growth |
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1. Kinins cause the release of ____ ,____, and ____,
2. all of which are ____ 3. that have ____ and ____ affects |
1. EDRF, NO, PG
2. vasodilators 3. diuretic, natriuretic |
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release sodium
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natriuretic
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retain sodium
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antinatriuretic
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____ are vasodilators that inhibit catecholamine release, and also have ___ and ____ properties
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PG (prostaglandins)
natriuretic, diuretic |
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EDRF and NO relax VSM via ___
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cGMP
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EDRF
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endothelium derived relaxation factor
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Endothelin is a potent ____, and a mitogen (thing that can enlarge) for ____, and also has ___ properties
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vasoconstrictor
VSM Antinatriuretic |
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Where is the source of many local hormone factors?
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endothelial cells of vessels
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The major stimulus of ___ is an increase in Atrial P
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ANH
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___ functions as a volume regulator by increasing ___ and ___ loss, and also acts as a vaso____
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ANH
Na water dilator |
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ANH has multiple antihypertensive actions by decreasing ____ and ____
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aldosterone, ADH
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ANH is natriuretic and diuretic by dilating afferent and constricting efferent arterioles to increase ____
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GFR
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ANH does what to VSM?
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reduces contractile effects
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ANH ___ renin release
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decreases
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ANH ____ responses to Ang II
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antagonizes
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ANH works through an increase in ____
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cGMP
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Stimulus for Digitalis-like factor/Natriuretic factor/ouabain-like factor is in increase in ____
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volume
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Digitalis inhibits the ____
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Na/K ATPase
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What is the effect on Na excretion for Digitalis-like factor/natriuretic factor/ouabain-like factor? The effect on BP?
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natriuresis
increase |
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Digitalis-like factor/natriuretic factor/ouabain-like factor ____ intracellular Na and Ca, ____ NE uptake, and enhanced _____
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increase
reduce vasoconstriction |
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The kidney does volume regulation by long term control, ____ diuresis, and infinite negative feedback systems
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pressure
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A few mmHg pressure change can get a ____ % change in urinary output if system operating normally
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50-100
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____ develops when volume regulation system in kidney fails
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hypertension
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Once disturbances in volume regulation of kidney system fails, these 3 other systems are involved
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1. structural changes
2. renal changes 3. baroreceptor function |
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primary or idopathic hypertension is ___% of all cases
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90-95
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Is there a cure for hypertension?
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no, control only
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___% of essentail hypertensives are salt sensitive
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60
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In the US we consume about ___ gms/day of NaCl (or ___ gm of Na/day)
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9-12, 4-5
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hypertension in people over 65: ____, in people under 34_____
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>50%
3% |
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____ are gradually "reset" reduced sensitivity with age
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baroreceptors
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____% of people with hypertension are insulin resistant
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50
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The kidney can lose its source of antihyptertensive fuction with loss of ___ and ____
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kinins
PG |
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In the 2 kidney, 1 clip model, initially ___ is elevated to bring BP up, hypertension occurs ___
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renin
always |
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in the 1 kidney, 1 clip model, renin is ____ then excess volume and sodium and pressure shuts down renin release, hypertension occurs ____
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initially elevated
always |
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medullary region of adrenal gland: ___
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pheochromocytoma
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A tumor of ____ cells can be removed to bring BP down in 1% of cases
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chromaffin
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What 3 things make up the symtomatic triad for diagnosis of chromaffin cells tumor causing high BP?
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1. tachycardia
2. headaches 3. attacks of sweating |
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Overproduction of ____ causes ~10% of secondary hypertension and is called _____
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aldosterone
primary aldosteronism |
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___ syndrome for high BP should be considered if patient has hypokalemis (<3.0 meq/L)
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Conns
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hypokalemia can lead to ____
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nephropathy
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In primary aldosteronism, plasma renin is ____, and is not stimulated by low sodium diet. ____ also is not reduced by high sodium diet
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low
aldosterone |
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____ test shows that ratio of aldo/renin does not fall in Conn's syndrome patients
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oral captopril (ace inhibitor)
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In primary aldoteronism, CO is ___ and TPR is ___
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elevated
elevated |
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this can result with a functional block of adrenal enzymes to disrupt ACTH feedback or some central ACTH overproduction, and could also occur with conditions that elevate renin and/or Angio II
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secondary aldosteronism
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____ is less than 0.1% of high BP, and has an increase in ____, with a 20% increase in adrenal clucocorticoids. TPR is ____
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cushing syndrome
increased |
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Glucocorticoids can:
___ vascular reactivity to catecholamines, ___ catecholamine uptake, and ___ the synth of angiotensinogen and increase the # of AT1 receptors |
enhance
inhibit increase |
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Glucocorticoids ___ CO
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increase
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Excess glucocorticoids can have mineralocorticoid effects that have na and water ____ and increase ____
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retention
volume |
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____ is high BP during late pregancy, with proteinuria or edema. It is a ___ disorder, when diastolic P increases to 95 mmHg, preinatal mortality increases ___ times
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preeclampsia
multisystemic 3 |
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In normal pregancy volume is increased by ____%
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40-60
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TPR in a normal pregancy should ___ and are ____ to angio II although RAS is elevated and BP may even fall
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decrease
hyporesponsive |
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in preeclamptics, volume may ____, CO is ___ to normotensive controls, TPR does ____, responsiveness to Ang II, catecholamines, ADH is ____, and there is a ___ fold risk for diabetes
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not increase
similar increase elevated 2 |
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in preclampsia there is an increase in 4 things, a decrease in 3, and a greater ____ resistance
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increase: ET1 (endothelin), deoxycorticosterone, natriuretic factor, AT1 receptors
decrease: EDRF (NO), Prostacyclin/thromboxane ratio, Vitamin E, lipid peroxides ratio greater insulin resistance |
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When systolic BP is > 150 mmHg, risk of atherosclerosis is ____
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doubled
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When systolic pressure > 160 mmHg, risk of stroke is increased ___ times
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4
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