NUR242 / NUR 242 Exam 2 Study Guide
Medical-Surgical Nursing Concepts
100% Correct | Grade A Galen
Med Surge Exam #2 Study
Guide Fluid & Electrolytes & ABG’s
o Homeostasis:
● Water is the most common fluid, makes up 50-60% of total weight
▪ Needed to deliver dissolved nutrients, electrolytes, and all
substances to all organs, tissues, and cells
● Water is divided into 2 main compartments:
▪ Extracellular – fluid outside the cell
◆ Also includes interstitial fluid between the cells
▪ Intracellular – fluid inside the cell
o Filtration
● The movement of fluid (water) through a cell or blood vessel
membrane because of water pressure (hydrostatic pressure)
differences on both sides of the membrane
● The human body constantly seeks equilibrium
▪ Water movement occurs until hydrostatic pressure is equal on
both sides of membrane
▪ Blood pressure is an example of hydrostatic filtration. It moves
whole blood from the heart to capillaries where filtration can
occur to exchange water, nutrients, and waste products
between the blood and the tissues
Medical-Surgical Nursing Concepts
100% Correct | Grade A Galen
Med Surge Exam #2 Study
Guide Fluid & Electrolytes & ABG’s
o Homeostasis:
● Water is the most common fluid, makes up 50-60% of total weight
▪ Needed to deliver dissolved nutrients, electrolytes, and all
substances to all organs, tissues, and cells
● Water is divided into 2 main compartments:
▪ Extracellular – fluid outside the cell
◆ Also includes interstitial fluid between the cells
▪ Intracellular – fluid inside the cell
o Filtration
● The movement of fluid (water) through a cell or blood vessel
membrane because of water pressure (hydrostatic pressure)
differences on both sides of the membrane
● The human body constantly seeks equilibrium
▪ Water movement occurs until hydrostatic pressure is equal on
both sides of membrane
▪ Blood pressure is an example of hydrostatic filtration. It moves
whole blood from the heart to capillaries where filtration can
occur to exchange water, nutrients, and waste products
between the blood and the tissues
