Calcium/Phosphorus/Vitamin D (mason) Flashcards Preview

PTP&M: Nephro > Calcium/Phosphorus/Vitamin D (mason) > Flashcards

Flashcards in Calcium/Phosphorus/Vitamin D (mason) Deck (19)
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1
Q

Normal Total Serum Calcium

A

8.4-10.2mg/dL

2
Q

Normal Ionized Serum Calcium

A

4.3-5.3mg/dL

3
Q

Vitamin D: Bone Resorption

A

Increase Ca++, PO4

4
Q

Vitamin D: Renal Absorption

A

Increase Ca++, PO4

5
Q

Vitamin D: Small Intestine Absorption

A

Increase Ca++, PO4

6
Q

NET Effect: Vitamin D

A

Increase Ca++, PO4

7
Q

PTH: Bone Resorption

A

Increase Ca++, PO4

8
Q

PTH: Renal Absorption

A

Increase Ca++, DECREASE PO4 (MAJOR)

*PTH induces kidneys to increase phosphorous elimination

9
Q

PTH: Small Intestine Absorption

A

Increase Ca++, PO4

10
Q

NET Effect: PTH

A

Increase Ca++, Decrease PO4

11
Q

Calcitonin: Bone Resorption

A

Decrease Ca++, PO4

12
Q

Calcitonin: Renal Absorption

A

Decrease Ca++, PO4

13
Q

Calcitonin: Small Intestine Absorption

A

Decrease Ca++, PO4

14
Q

NET: Calcitonin

A

Decrease Ca++, PO4

15
Q

Liver Vitamin D Metabolism

A

Dietary Vitamin D –> Calcidiol (25-OH D)

16
Q

Kidney Vitamin D Metabolism

A

Calcidiol (25-OH D) –> Calcitriol (1,25-OH D)

17
Q

Calcitriol: Actions (2)

A

Increase bone resorption
Increase absorption of dietary calcium/phosphorous
Reduce renal elimination of PO4 + Ca++

18
Q

Corrected Calcium: Low albumin (

A

c[Ca] = [Ca]serum + [0.8 * (4.0 - [meas. albumin])

19
Q

Corrected Calcium: pH

A

c[Ca] = [Ca]serum + [0.12/0.1 * (7.4 - observed pH)]