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59 Cards in this Set

  • Front
  • Back
In ____ there is a decrease in the kidneys ability to function, there fore_____.
renal failure





drugs can accumulate to high levels



With renal failure
medication drugs need to be adjusted

administering the average dose in person with____ can be ____



Renal failure



fatal

urinalysis examines the ___ and ___
pH





protein



pH levels
4.0-8.0 (average 6)


protein levels

0 - trace
24 hr protein( quantitative)


150 mg/day

persistent proteinuria
characteristic of acute and chronic kidney

disease




Measure for detecting kidney disease


best indicator of renal failure

Serum creatinine

serum creatinine levels
0.6-1.5 mg/dL
best marker for estimating renal funtion
Glomerular Filtration Rate (GRF)

(70-135 ml/min/1.73 m)

a decline in ____ indicates a decline in the number of functioning ____.



nephrons

____ drugs an cause acute or chronic renal failure
nephrotoxic drugs
diuretic drugs are classified according to their sites of action within___, and their__2__.
the nephron



chemical structure and diuretic potency

main adverse effect of diuretic therapy
fluid and electrolyte disturbances
60 to 70 % of sodium and water is return to the bloodstream by the ___.
proximal tubule
if water is not absorbed, then____
it is excreted as urine.
5 types of diuretic drugs PLOT-C
potassium-sparing diuretics



loop diuretics: fastest, most potent




osmotic diuretics




thiazide and thiazide-like diuretics




carbonic anhydrase inhibitors




*remember PLOT-C

Diuretic drug action

most commonly used Carbonic anhydrase inhibitors
acetazolamide( Diamox)
__- an enzyme hat helps to make H+ ions available for exchange with sodium and water in the proximal tubules
carbonic anhydrase
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.





carbonic anhydrase can cause____.
metabolic acidosis


adjunct drug in the long-term management of open angle glaucoma.
carbonic anhydrase inhibitors


used in the treatment of edema and high altitude sickness.
carbonic anhydrase inhibitors (Diamox)
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

carbonic anhydrase inhibitors are used with___ to lower intraocular pressure before ocular surgery in certain cases
miotics (drugs for the eyes)
carbonic anhydrase inhibitors are____than loop diuretics or thiazides- the metabolic acidosis they induce reduces their diretic effect in 2 to 4 days
less potent diuretics
carbonic anhydrase inhibitors: adverse effects (pim2hug)
photosensitivity


increased blood glucose levels


metabolic acidosis


melena


hypokalemia


urticaria


glycosuria in diabetic patients




the most commonly used loop diuretic
furosemide (Lasix)
Loop Diuretics are useful in the treatment of ___
Edema



control hypertension


HF resulting from diastolic


dysfunction

Loop Diuretics have a (2)
rapid onset of action and rapid diuresis
Loop Diuretics increase renal prostagladins, resulting in the _____and reduced____

dilation of blood vessels



peripheral vascular resistance

onset of action for loop diuretics: IV or PO
IV-5 min



PO- 60 min

because of their ___ effects and the duration of action, loop diuretics are usually effective____
potent diuretic



when given in a single daily dose.

because loop diruetics potent diuretic effect, it allows the _____ time to partially compensate for the ____ and ____depletion
renal tubule



potassium




sodium

loop diuretics are used to control___ and in cases of ____ resulting from___.
hypertension



heart failure




diastolic dysfunction

use of loop diuretics with__3___can cause toxicity

Limthium, NSAID, and vancomycin

most used osmotic diuretic
mannitol( Osmitrol)
loop diuretics adverse effects ( STD)



stevens-johnson syndrome




tennitus




dizziness

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



2 hours
osmotic diuretics(Mannitol) MOA
inhibits reabsorption of water and Na.
osmotic diuretic( Mannitol) reduce___ or _____ associated with head trauma.
intracranial pressure



cerebral edema

osmotic diuretics( Mannitol) are NOT indicated for _____
peripheral edema
osmotic diuretics adverse effects: Mannitol
convulsions



tachycardia




chest pain

Mannitol is always administered ____ through a filter, and vials of the drug are often stored in a ____.
intravenously



warmer

Mannitol may____ when expoed to ___. this is more likely to occur when concentrations exceed ____.


crystallize



low temperatures




15%

potassium-sparing diureticcs
spironolactone (Aldactone)
monitor ___ levels frequently in patients who have impaired renal funtion or who are currently taking____ because___ is a common complication of spironolactone therapy.
serum potassium



potassium supplements




hyperkalemia



potassium-sparing diuretic( spironolactone): adverse effect
hyperkalemia


Hyperaldosteron


hypertension


reversing potassium loss caused by potassium-wasting(loop-thiazide) diuretics


certain cases of heart failure

spironolactone

potassium wasting diuretics (2)
loop and thiazide

Potassium sparing diuretics adverse effects

Hyperkalemia


Irregular menses


Postmenopausal bleeding


Amenorrhea

Thiazide and Thiazide-like

Diuretics

hydrocholorothiazide ( Esidrix, HydroDIURIL)
dilate the arterioles by direct relaxation (think anti-hypertension therapy)
thiazide and thiazide-like diuretics
this best reflects the patients fluid volume status
baseline fluid volume status



intake and output




weight

instruct patients to take the medication _____ if possible to avoid interference with sleep patterns
in the morning
Diuretics:teach patient to change positions slowly and to rise slowly after sitting or lying to prevent __ and __ related to ____.
dizziness

fainting


orthostatic hypotension



adverse effect of thiazide diuretics is ____ therefore, the nurse should check ____.
hyperglycemia; glucose levels
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)