Cerebral Salt Wasting

True or False

100

A normal A1c is less than 7%

False (<6.5%) 

200

Hypertonic saline should be administered through a central line

True

300

The mechanism of CSW is clearly defined as it is due to elevated BNP levels causing diuresis

False

400

Na of 119 mEq/L can cause delirium, seizuires, coma, and even death

False (Na < 115 mEq/L, although clinically may differ). 

500

The osmolality of 23.4% hypertonic saline is 7462 mOsm/L

True

Salty Spitoon

100

How much sodium (in mEq) is in normal saline? 

154 mEq 

200

How much sodium is contained in a 1 g tablet of sodium chloride? 

17.1 mEq/g

300

How much sodium is in 3% hypertonic saline?

4,004 mEq 

400

How much sodium is contained in 1/2 normal saline? 

77 mEq

500

How much sodium is contained in the following regimen of sodium chloride tabs: 4g TID? 

~205 mEq

SIADH, CSW, both, or neither

100

Associated with decreased extracellular volume

Cerebral Salt Wasting

200

More common among patients with CNS disease

SIADH

300

Hyponatremia (<135 mEq/L)

Both 

400

Responds to isotonic saline 

Cerebral Salt Wasting

500

Serum osmolaltiy of 275 mOsm

Neither

Osmolality

100

Range of osmolality for hypotonic hyponatremia

< 275 mOsm

200

Range of osmolality for hypertonic hyponatremia

> 290 mOsm

300

What is the osmolality of 3% hypertonic saline?

954 mOsm/L

400

What 3 labs in a chem 7 are used to calculate osmolality?

Na, BUN, and Glucose

500

What is the equation for osmolality? 

Osm = (2 x Na) + (BUN/2.8) + (Glucose/18)

Name that Hyponatremia

100

Na < 135 mEq/L and Osm <275 mOsm

Hypotonic Hyponatremia

200

Na < 135 mEq/L and Osm of 280 mOsm

"Pseudo" Hyponatremia

300

Na <135 mEq/L and Osm > 290 mOsm

Hypertonic Hyponatremia

400

Na < 135 mEq/L, Osm of < 275 mOsm, low TBW

Hypovolemic, hypotonic, hyponatremia

500

Na > 135 mEq/L, Osm of 260 mOsm , high TBW

Not hyponatremia (Na >135 mEq/L)