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59 Cards in this Set
- Front
- Back
In ____ there is a decrease in the kidneys ability to function, there fore_____.
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renal failure
drugs can accumulate to high levels |
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With renal failure
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medication drugs need to be adjusted
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administering the average dose in person with____ can be ____ |
Renal failure fatal |
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urinalysis examines the ___ and ___
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pH
protein |
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pH levels
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4.0-8.0 (average 6)
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protein levels |
0 - trace 150 mg/day |
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persistent proteinuria
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characteristic of acute and chronic kidney
disease |
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Measure for detecting kidney disease best indicator of renal failure |
Serum creatinine |
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serum creatinine levels
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0.6-1.5 mg/dL
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best marker for estimating renal funtion
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Glomerular Filtration Rate (GRF)
(70-135 ml/min/1.73 m) |
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a decline in ____ indicates a decline in the number of functioning ____. |
nephrons |
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____ drugs an cause acute or chronic renal failure
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nephrotoxic drugs
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diuretic drugs are classified according to their sites of action within___, and their__2__.
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the nephron
chemical structure and diuretic potency |
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main adverse effect of diuretic therapy
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fluid and electrolyte disturbances
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60 to 70 % of sodium and water is return to the bloodstream by the ___.
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proximal tubule
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if water is not absorbed, then____
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it is excreted as urine.
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5 types of diuretic drugs PLOT-C
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potassium-sparing diuretics
loop diuretics: fastest, most potent osmotic diuretics thiazide and thiazide-like diuretics carbonic anhydrase inhibitors *remember PLOT-C |
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Diuretic drug action |
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most commonly used Carbonic anhydrase inhibitors
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acetazolamide( Diamox)
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__- an enzyme hat helps to make H+ ions available for exchange with sodium and water in the proximal tubules
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carbonic anhydrase
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acetezolamide( Diamox)
dosage and contraindiations (5) |
250-500 mg per day
containdication: liver or kidney dysfunction, low serum potassium or sodium levels, acidosis or adrenal gland failure. |
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carbonic anhydrase can cause____.
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metabolic acidosis
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adjunct drug in the long-term management of open angle glaucoma.
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carbonic anhydrase inhibitors
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used in the treatment of edema and high altitude sickness.
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carbonic anhydrase inhibitors (Diamox)
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carbonic anhydrase inhibitors:
inhibition of carbonic anhyrase reduces H+ ion concentratin in renal tubules As a result, there is increased excretion of bicarbonate, sodium, water and potassium. Reabsorption of water___, and urine volume___. |
is decreased
is increased |
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carbonic anhydrase inhibitors are used with___ to lower intraocular pressure before ocular surgery in certain cases
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miotics (drugs for the eyes)
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carbonic anhydrase inhibitors are____than loop diuretics or thiazides- the metabolic acidosis they induce reduces their diretic effect in 2 to 4 days
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less potent diuretics
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carbonic anhydrase inhibitors: adverse effects (pim2hug)
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photosensitivity
increased blood glucose levels metabolic acidosis melena hypokalemia urticaria glycosuria in diabetic patients |
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the most commonly used loop diuretic
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furosemide (Lasix)
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Loop Diuretics are useful in the treatment of ___
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Edema
control hypertension HF resulting from diastolic dysfunction |
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Loop Diuretics have a (2)
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rapid onset of action and rapid diuresis
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Loop Diuretics increase renal prostagladins, resulting in the _____and reduced____
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dilation of blood vessels
peripheral vascular resistance |
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onset of action for loop diuretics: IV or PO
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IV-5 min
PO- 60 min |
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because of their ___ effects and the duration of action, loop diuretics are usually effective____
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potent diuretic
when given in a single daily dose. |
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because loop diruetics potent diuretic effect, it allows the _____ time to partially compensate for the ____ and ____depletion
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renal tubule
potassium sodium |
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loop diuretics are used to control___ and in cases of ____ resulting from___.
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hypertension
heart failure diastolic dysfunction |
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use of loop diuretics with__3___can cause toxicity |
Limthium, NSAID, and vancomycin |
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most used osmotic diuretic
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mannitol( Osmitrol)
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loop diuretics adverse effects ( STD)
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stevens-johnson syndrome tennitus dizziness |
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loop diurectis have a distinct advantage over thiazide diureticcs in that their diuretic action continues even when ____ decreases below___
the dirureticc effect last at least____. |
creatinine clearence 25 mL/ min |
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osmotic diuretics(Mannitol) MOA
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inhibits reabsorption of water and Na.
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osmotic diuretic( Mannitol) reduce___ or _____ associated with head trauma.
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intracranial pressure
cerebral edema |
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osmotic diuretics( Mannitol) are NOT indicated for _____
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peripheral edema
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osmotic diuretics adverse effects: Mannitol
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convulsions
tachycardia chest pain |
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Mannitol is always administered ____ through a filter, and vials of the drug are often stored in a ____.
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intravenously
warmer |
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Mannitol may____ when expoed to ___. this is more likely to occur when concentrations exceed ____.
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crystallize
low temperatures 15% |
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potassium-sparing diureticcs
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spironolactone (Aldactone)
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monitor ___ levels frequently in patients who have impaired renal funtion or who are currently taking____ because___ is a common complication of spironolactone therapy.
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serum potassium
potassium supplements hyperkalemia |
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potassium-sparing diuretic( spironolactone): adverse effect
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hyperkalemia
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Hyperaldosteron hypertension reversing potassium loss caused by potassium-wasting(loop-thiazide) diuretics certain cases of heart failure |
spironolactone |
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potassium wasting diuretics (2)
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loop and thiazide
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Potassium sparing diuretics adverse effects |
Hyperkalemia Irregular menses Postmenopausal bleeding Amenorrhea |
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Thiazide and Thiazide-like
Diuretics |
hydrocholorothiazide ( Esidrix, HydroDIURIL)
|
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dilate the arterioles by direct relaxation (think anti-hypertension therapy)
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thiazide and thiazide-like diuretics
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this best reflects the patients fluid volume status
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baseline fluid volume status
intake and output weight |
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instruct patients to take the medication _____ if possible to avoid interference with sleep patterns
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in the morning
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Diuretics:teach patient to change positions slowly and to rise slowly after sitting or lying to prevent __ and __ related to ____.
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dizziness
fainting orthostatic hypotension |
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adverse effect of thiazide diuretics is ____ therefore, the nurse should check ____.
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hyperglycemia; glucose levels
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location/ action
proximal tubules: loop of Henle: early distal: late distal: |
proximal tubles: CAI( HCO3/H+/Na); Osmotic( Na+/ H20)
loop of Henle: loop (Na/Cl) early distal: thiazide (CL) late distal: K+ sparing (k+/Na) |