SPC Cardiopulmonary Physiology Unit 8 Exam 4
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| Total water % for males? | 60%
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| Total water % for females? | 55%
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| Total water % for newborns? | 75%
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| Define Millimole (mmol)? | 1/1000 of a mole
*glucose is sometimes measured in mmols/L
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| 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
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| 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.
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| Define Osmolarity? | The physiochemical property of substances in a solution which determines osmosis.
Normal Serum Osmolarity: 275-300 mOsm/L
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| Range of Normal Serum Osmolarity? | 275-300mOsm/L
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| State 3 primary determinants of Serum Osmolarity? | 1. Sodium
2. Glucose
3. B.U.N.
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| 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
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| 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"
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| 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
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| 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.
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| Normal PaO2? | 80-100 mmHg
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| Mild Hypoxemia? | 60-80 mmHg
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| Moderate Hypoxemia? | 50-60 mmHg
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| Severe Hypoxemia? | <50 mmHg
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