disorders of Ca, P, Mg

Question 1

for every ___gr/dL drop in serum albumin below 4, have a decr of serum Ca by____mg/dL

Answer 1

1; 0.8

Question 2

how to calculate corrected Ca: measured Ca + (___(___-measured alb)

Answer 2

measured Ca + (0.8(4-measured alb))

Question 3

PTH___distal convulated tubular Ca reabsorption & ___proximal tubular phosphate reasorption

Answer 3

increases; decreases

Question 4

net effect of PTH on Ca & P?

Answer 4

incr serum Ca, decr serum phosphate

Question 5

calcitonin ____renal tubular reabsorption of Ca & P

Answer 5

decr

Question 6

net effect of calcitonin on Ca & P?

Answer 6

decr serum Ca & Phosphate

Question 7

stones, bones, abd groans, and psych moans

Answer 7

hypercalcemia

Question 8

EKG changes with hypercalcemia

Answer 8

everything gets shorter

Question 9

EKG changes with hypocalcemia

Answer 9

everything gets longer

Question 10

more prevalent in females, benign cause of hypercalcemia

Answer 10

primary hyperparathyroidism

Question 11

what drugs may induce hypercalcemia (3)

Answer 11

1. thiazide diuretics
2. lithium
3. milk-alkali

Question 12

1st line tx of hypercalcemia

Answer 12

NS

Question 13

1-alphahydroxylase deficiency

Answer 13

vitamin D depdnent rickets type 1

Question 14

mutation of vit D receptor

Answer 14

vitamin D dependent rickets type 2

Question 15

tx of hypocalcemia

Answer 15

IV bolus over 10 min or IV infusion

Question 16

where is most phosphorus from?

Answer 16

stored as reservoir in bone

Question 17

most common cause of hyperphosphatemia

Answer 17

renal failure

Question 18

respiratory failure - don’t forget about what electrolyte?

Answer 18

phophorus