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