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111 Cards in this Set

  • Front
  • Back
impermeable solute concentration
Tonicity
total solute concentration(impermeable + permeable)
Osmolality
Normal values of Osmolality
275-290 mOsm/L
Blood draws are taken from here
Intravascular fluid
Arterial blood volume is also referred to as?
ECV: effective circulating volume
D5W is used to replace fluids under what condition?
Water deficit or hypernatremia
NS; normal saline is replacement fluid for what?
GI tract fluid losses; hypotension; dehydration; minor blood loss
Which stays in intravascular more? D5W or NS
NS
3% NS is used for what condition?
SIADH
LR; Lactated Ringers are used for fluid replacement in what conditions?
acidosis; fluid loss from pancreas or small bowel
What remains in IVF; intravascular fluid better than crystalloids?
Plasma expanders such as albumin, hetastarch, dextrans
In hypovolemia, what fluid is used and its purpose?
NS to replace fluids. (If cause is from blood loss then blood transfusion)
In Euvolemia, how is daily maintenance fluid volume calculated?
100mL/kg for first 10kg
add 50ml/kg for 10kg-20kg
add 20ml/kg for >20kg
What fluid combination may be used in Euvolemia conditions?
D5W/0.45%NS
In Hypervolemia, what should be restricted or given to correct this?
Restrict fluids, Restrict sodium.
May give diuretic.
Which of these would be less likely to distribute out of the IVF?
Albumin, D5W, NS
Albumin
The most common electrolyte abnormality encountered is?
Hyponatremia
An increase in osmolality will cause the release of this ? and stimulate this ?
Release ADH allowing free water reabsorption.
Stimulate thirst.
The etiology of excess ECF water due to impaired excretion of water or a non-osmotic release of ADH causes this?
Hyponatremia
Elevated/normal osmolality in hyponatremia may suggest what?
Presence of another effective osmole, such as glucose.
These commonly cause hyponatremia within 2 weeks of use.
thiazide diuretics
Name 2 medications that can cause SIADH.
SSRIs and carbamazepine
Hypervolemic hypotonic hyponatremia will increase ECF but will decrease what?
ECV; effective circulating volume
Headache, lethargy, seizures, and permanent brain damage are signs of moderate/severe what?
hyponatremia
Dry mucous membranes, orthostatic hypotension, and decreased skin turgor suggest?
hypovolemia
Edema or weight gain may suggest?
hypervolemia
The rapid correction of hyponatremia will cause what? What is considered rapid?
Osmotic demyelination syndrome[para or quadraparesis]
>12mEq/L
For hypovolemic hypotonic hyponatremia what fluid is used?
0.9% NS
For euvolemic or hypervolemic hyponatremia what is usually the first strategy?
fluid restriction
Hypervolemic hypotonic hyponatremia is treated with fluid restriction and what else?
furosemide
A patient with GI fluid losses would be expected to have? Hypervolemic, euvolemic, or hypovolemic hyponatremia
hypovolemic hyponatremia
Demeclocycline is used to treat this electrolyte imbalance and has this ADR?
Treats Euvolemic hypotonic hyponatremia.
ADR: nephrotoxicity
Conivaptan(Vaprisol) is used to treat this electrolyte imbalance and has this ADR?
Treats Euvolemic hypotonic hyponatremia.
ADR:Infusion site reaction
Tolvaptan(Samsca) is used to treat this electrolyte imbalance?
Treats Euvolemic hypotonic hyponatremia.
Monitoring for acute hyponatremia should include?
mental status exam, cardiac/pulmonary status exam, sodium, potassium, urine osmolality.
An acute rise in sodium causing water movement from ICF to ECF occurs in this electrolyte imbalance?
Hypernatremia
Diabetes insipidus from the decrease of ADH secretion occurs in this electrolyte imbalance?
Hypernatremia
Diabetes insipidus can be caused by what drugs?
lithium, demeclocycline
Muscle weakness, lethargy, coma, permanent neurologic damage occurs in this electrolyte imbalance?
hypernatremia
Overly rapid administration of hypotonic fluids can cause?
cerebral edema
Desmopressin treats this condition and has this ADR?
Treats diabetes insipidus.
ADR: severe hyponatremia .
If Crcl<50ml/min then this drug is contradicted for use in diabetes insipidus?
desmopressin
Monitoring for hypernatremia should include?
Serum sodium, fluid status
Hypotonic fluids should be used to treat? hypernatremia or hyponatremia
hypernatremia
What 5 drugs can induce hypocalcemia?
Bisphosphonates, calcitonin, cinacalcet, denosumab, furosemide
PTH insufficiency, Vitamin D insufficiency and calcium chelation can cause what electrolyte imbalance?
Hypocalcemia
When evaluating total serum calcium levels, it is important to consider?
albumin levels
Tetany and prolonged QT occur in which electrolyte imbalance?
hypocalcemia
Tetany is an involuntary muscle contraction.
IV calcium products may cause this ADR?
severe cardiac dysfunction
What 3 oral calcium products may be given for hypocalcemia treatment? Which is more effective in elderly? What are the 2 IV calcium products
Oral: CaCO3, CaCitrate, CaLactate
CaCitrate more effective in elderly.
IV: CaCl, Cagluconate
What 2 medications may cause hypercalcemia?
lithium, thiazides
Primary hyperparathyroidism, malignancy, hyperthyroidism all may cause this electrolyte imbalance?
hypercalcemia
PTH causes calcium from bone to be ? and calcium from renal tubules to be ?
Increased in resorption of Ca from bone and reabsorption from renal tubules
anorexia, nausea, vomiting, AKI, tetany, obtundation, ventricular arrythmias are presentation signs of this electrolyte imbalance?
hypercalcemia
Furosemide use in hypercalcemia may cause these ADRs and should be used when?
ototoxicity, hypokalemia
Use after hydration with normal saline has been initiated.
*Furosemide can treat Hypermagnesemia and Hyperkalemia.
Bisphosphonates are used to treat this electrolyte imbalance and cause these ADRs?
Hypercalcemia.
ADR: osteonecrosis of jaw, AKI
This is the drug of choice for hypercalcemia of malignancy and reduces serum ca in how many hours?
Bisphosphonates in 48 hours.
If a patient has CKD or HF with hypercalcemia, then what drug should be used?
calcitonin
Chronic granulomatous disease may be given this treatment?
Bisphosphonates with Glucocorticoid such as prednisone.
Refeeding syndrome, insulin, alcoholism, respiratory alkalosis, diarrhea are all etiologies of this electrolyte imbalance?
hypophosphatemia
What 2 drugs may cause hypophosphatemia?
CaCO3, sevelamer
Respiratory alkalosis increases intracellular pH which stimulates glycolysis, causing what electrolyte imbalance?
hypophosphatemia
Diets high in carbs cause increase in insulin release resulting in this electrolyte imbalance?
hypophosphatemia
seizures, rhabdomyolysis, hemolysis are presentations of this electrolyte imbalance?
hypophosphatemia
If a patient is receiving hyperalimentation( administration of nutrients) adding how much phos to the fluid may prevent hypophosphatemia?
12-15mmol/L
NaPhos contains how many mEq Na and how many mmol phos/ml? When is it recommended?
4mEq Na, 3mmol phos/ml
Recommend when serum K>3.5mEq/L
KPhos contains how many mEq Na and how many mmol phos/ml? When is it recommended?
4.4 mEq Na, 3mmol phos/ml
Recommend when serum K<3.5mEq/L
IV phosphorous products usually give desired response in what time frame?
24hours
Phos-NaK contains how much Na,K,Phos?
Na 6.9mEq, K 7.1mEq, 8 mmol phos
K-Phos neutral contains how much Na,K,Phos?
Na 13mEq, K 1.1mEq, 8 mmol phos.
Oral phosphorous products have this ADR? and give desired response in what time frame?
ADR:osmotic diarrhea
Response: 7-10 days
Monitoring of hypophosphatemia should include?
Serum Phos, K, Mg, Ca
Which has the higher K content? Phos-NaK or K-phos neutral
Phos-NaK
Phos containing laxatives/enema and AKI/CKD are etiologies of this electrolyte imbalance?
hyperphosphatemia
Decrease in vitamin D synthesis, hypocalcemia, and increase in PTH are related to this electrolyte imbalance?
hyperphosphatemia
Obstructive uropathy, organ damage, and osteodystrophy are present in this electrolyte imbalance?
hyperphosphatemia
If both Ca and Phos levels are in imbalance which should be corrected first?
Ca should be fixed first.
Calcium Acetate is used to treat this electrolyte imbalance? and may cause this electrolyte imbalance?
Treats hyperphosphatemia.
Causes hypercalcemia.
Sevelamer(Renvela) is used to treat this electrolyte imbalance? and has beneficial effects on ?
Treats hyperphosphatemia. Beneficial effects on HDL and LDL.
Lanthanum(Fosrenol) is used to treat this electrolyte imbalance? and should be taken how?
Treats hyperphosphatemia. Taken by mouth and chewed.
Aluminum hydroxide (Amphojel) is used to treat this electrolyte imbalance? ADRs?
Treats hyperphosphatemia.
ADR: anemia, bone disease, CNS disorders.
Magnesium hydroxide (Milk of Magnesia) is used to treat this electrolyte imbalance? and may cause this electrolyte imbalance?
Treats hyperphosphatemia.
Causes hypermagnesemia.
Insulin, beta agonists, loop and thiazide diuretics, and bicarbonates cause this electrolyte imbalance?
hypokalemia
heart failure, cirrhosis, nephrotic syndrome, dehydration, vomiting, diarrhea, malabsorption can cause this electrolyte imbalance?
hypokalemia
Metabolic alkalosis may result in this electrolyte imbalance?
hypokalemia
Moderate hypokalemia has this presentation? Severe hypokalemia has this presentation?
Moderate:cramping
Severe:EKG changes
Potassium salts can cause this ADR?
GI irritation/ulceration
In hypokalemia, if there is also a phos deficiency then this drug is given?
KPhos
In hypokalemia, if there is metabolic acidosis then this drug is given?
KBicarb
The patient should be monitored by EKG if potassium chloride is given at this rate?
>10mEq/H
Concentrations of potassium chloride can cause irritation when given peripherally at this rate?
>40mEq/L
Hemolysis of sample, AKI/CKD,acidosis, NSAIDS, ACEI, B-blockers may cause this electrolyte imbalance?
hyperkalemia
K elevation is accompanied by low what values? and elevated what?
Low: HCO3
High: BUN Scr
Hyperkalemia may be treated with what kind of diuretics?
Loop
Sodium polystyrene sulfonate is used to treat this electrolyte imbalance?
hyperkalemia
This drug should never be mixed with orange juice?
SPS
Calcium chloride and calcium gluconate are used to treat these electrolyte imbalances? which is associated with more tissue necrosis?
Treat: Hyperkalemia, Hypocalcemia, Hypermagnesemia
CaCl more tissue necrosis
Dextrose/insulin therapy may be use to treat this electrolyte imbalance?
hyperkalemia
sodium bicarbonate is used to treat this electrolyte imbalance? and has these ADRs?
Treat: hyperkalemia.
ADR: hypernatremia, fluid overload
If a patient has metabolic acidosis, hyperkalemia, this drug would be most useful?
sodium bicarbonate
Albuterol (proventil) is used to treat this electrolyte imbalance?
and has this ADR?
hyperkalemia
ADR: tachycardia
What drug removes K from the body?
SPS
For the treatment of hyperkalemia, which drug has fastest onset, slowest?
Fastest: Calcium
Slowest: SPS
Alcohol, diuretics, chronic diarrhea, malnutrition cause this electrolyte imbalance?
hypomagnesemia
Hypomagnesemia is commonly present with what other deficiencies?
K and Ca
Tetany, seizures, and arrhythmias are present with this electrolyte imbalance?
hypomagnesemia
Magnesium sulfate is used to treat this electrolyte imbalance? and causes these ADRs when given IV?
Treat: hypomagnesemia
ADR: hypotension, vasodilation
Mg levels take how long to be replaced?
3-5 days
AKI/CKD, antacids/laxatives can cause?
hypermagnesemia
As CrCl descend below 30ml/min, this increases?
hypermagnesemia
what products are used to treat hypermagnesemia?
IV calcium products, diuretics, fluids