Renal Tx And Tests Flashcards
How do you treat hypovolemic hypernatremia with unstable VS?
NS
How do you treat hypovolemic hypernatremia?
D5W
How do you treat euvolemic hypernatremia?
D5W or 1/2NS
How do you treat hypervolemic hypernatremia?
Diuretics + D5W
How quickly should you correct chronic hypernatremia?
No more than 0.5 mEq/L/hr
Over the course of 48-72 to prevent cerebral edema
What do you do if serum osmolality is less than 280?
Assess extra cellular volume and take a urine sodium
What does it mean if urine sodium is less than 10 and the patient had hypovolemic hyponatremia?
GI losses, NG tube, vom, diarrhea
Skin losses, burns
Third spacing
Because the RAS is activated so holding onto to sodium
What does it mean if urine sodium is greater than 10 and the patient has hypovolemic hyponatremia?
Due to diuretic use
Adrenal insufficiency
Urinary obstruction
RTA metabolic alkalosis
What if the urine sodium is greater than 10 and the patient has hypervolemic hyponatremia?
AKI
CKD
What if the urine sodium is less than 10 and patient is hypervolemic hyponatremia?
Cirrhosis
CHF
Nephrotic syndrome
What is the treatment for hypervolemic hyponatremia?
Water restriction
May use diuretics
Treat underlying problem
What is the treatment for euvolemic hyponatremia?
Water restriction
What is the treatment for hypovolemic hyponatremia?
NS
How quickly should hyponatremia be fixed?
No more than 0.5 mEq/l/hr
How do you confirm the diagnosis of hyperkalemia?
Repeat blood draw
When there is extreme leukocytosis or thrombocytosis and hyperkalemia, what should you do?
Check plasma potassium
What is the first step in treating hyperkalemia?
Give calcium gluconate
What is the treatment protocol for hyperkalemia?
C BIG K
Calcium gluconate
Bicarbonate/b2 agonist, insulin and glucose
Kayexakalate
What are the drugs used for increased excretion of potassium?
Kayexalate
Loop diuretics
What are the contraindications to using kayexalate?
Ileus
Bowel obstruction
Ischemic gut
Pancreatic transplants
How do you distinguish renal from GI loss as the cause of hypokalemia?
24 hour or spot urine potassium
What is the treatment for hypokalemia?
Treat underlying cause
Give potassium oral or IV - do not exceed 20 mEq/L/h
Replace magnesium
Monitor ECG and plasma potassium levels frequently during replacement
What should you think if a patient has hypokalemia and metabolic acidosis?
RTA
What should you watch out for with hypokalemia?
Digitalis toxicity
AV nodal block