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Car/Pul Unit 8

SPC Cardiopulmonary Physiology Unit 8 Exam 4

Total water % for males? 60%
Total water % for females? 55%
Total water % for newborns? 75%
Define Millimole (mmol)? 1/1000 of a mole *glucose is sometimes measured in mmols/L
Define Milliequivalent (mEq)? 1/1000 of an equivalent *An equivalent is the amount of an ionized substance that has electrochemical binding power equal to one mole of hydrogen ions. *Electrolytes, cations, anions, and expressed in milliequivalents
Define Milliomole (mOsm) 1/1000 of an osmole *An osmole is one mole of osmotically active particles. *Osmostic activity of fluids such as blood & urine are expressed in milliosmoles. *Glucose & proteins exert great osmotic influence.
Define Osmolarity? The physiochemical property of substances in a solution which determines osmosis. Normal Serum Osmolarity: 275-300 mOsm/L
Range of Normal Serum Osmolarity? 275-300mOsm/L
State 3 primary determinants of Serum Osmolarity? 1. Sodium 2. Glucose 3. B.U.N.
What is the action of Loop Diuretics? a.k.a. Lasix 1. Act by inhibiting tubular reabsorption of sodium, potassium, & chloride in the LOOP OF HENLE. 2. Fast & Powerful
What is the action of Thiazide Diuretics? 1. Act by inhibiting tubular reabsorption of sodium, potassium, & chloride in the DISTAL TUBULE. 2. Additionally bicarbonate is reabsorbed causing metabolic alkalosis. 3. "Less potent than Loop Diuretics"
What is the action of Osmotic Diuretics? a.k.a. Mannitol 1. Large molecular substances that pass into the tubules through the glomerular membrane and are not reabsorbed 2. Pull a lot of fluid
What is Aldosterone? An adrenal hormone that increases sodium reabsorption & potassium secretion in the response to: 1. Hyponatremia 2. Hyperkalemia 3. Hypovolemia 4. Decreased C.O.
Normal PaO2? 80-100 mmHg
Mild Hypoxemia? 60-80 mmHg
Moderate Hypoxemia? 50-60 mmHg
Severe Hypoxemia? <50 mmHg
Created by: Langhout1418