Fluids and Electrolytes Flashcards
TRUE OR FALSE. Fluids account for about 70% of an adults total body weight
False. 60%
Constitutes about 2/3 of fluid in a person’s total body weight
Intracellular fluid (ICF)
Accounts for 1/3 of fluid in a person’s total body weight
Extracellular fluid (ECF)
2 divisions of extracellular fluid
Intravascular space and interstitial space
Fluid that surround the blood vessels
Intravascular space
Fluid that surrounds the cell
Interstitial space
Loss of extracellular fluid into a space that does not contribute to equilibrium between the ICF and ECF
Third- space fluid shift
A substance that dissociates and forms ions when mixed with water
Electrolytes
Major electrolytes in ICF
Potassium and phosphate
Major electrolytes in ECF
Sodium and chloride
Primary determinant of ECF concentration
Na level
Any substance that ionizes in water and forms hydrogen ions and anions
Acid
Any substance that can bind to hydrogen ions
Base
A measure of acid- base balance
pH
Normal pH for humans
7.4
Involves fluid shifting through membranes from an area of low concentration to an area of higher solute concentration in an attempt to achieve physiologic balance
Osmosis
Fluid movement from an area of higher concentration to lower concentration
Diffusion
TRUE OR FALSE. Is the exchange of O2 and CO2 in between pulmonary capillaries and alveoli considered diffusion?
TRUE
Removal of particles from a solution through the movement of fluid across a membrane or other partial barrier
Filtration
Energy- requiring process that transports ions across the cell membrane against a concentration gradient
Active transport
TRUE OR FALSE. Fluid loss is not a normal result of bodily function
False. It is normal
How much fluid output do kids produce?
1-2 L daily
How much fluid loss do average people have?
Sensible (perspiration)- 0-1000 ml/hr
Insensible (evaporation)- 600 ml/day
How much fluid loss from the GI tract is considered normal?
100-200 ml/day
