Week 3 Flashcards
___/___ of fluid is intracellular. ___/___ is extracellular.
2/3 ; 1/3
What are some signs and symptoms of fluid deficit?
Decreased turgor Dry bucal area Decreased UO Increased BUN and creatinine Increased HR, RR, temp Decreased BP Decreased weight Thrist Dry/cracked mucous membranes Dizziness Syncope
What are the S/S of excess fluid volume?
Weight gain Edema Crackles Dyspnea Cough Orthopnea Bounding pulse Distension of vessels Decreased BUN/Creatinine Increased BP, RR, HR Headache S3 gallop
Where do electrolytes move towards?
They move towards decreased concentrations, opposite charge and their concentration gradient.
What is facilitated diffusion?
Via a passive protein carrier.
_____ is passive with concentration gradient.
Diffusion
What form of diffusion uses the sodium/potassium pumo?
Active transport.
What is osmology?
Solute to water ratio. osmotic force per unit weight of solvent or the conc. of molecules per weight of water.
What is an isotonic solution?
Equal solute, equal water. Normal Saline, LR.
What is a hypertonic solution?
Less water than solute. 3% NS, 5% NS. (used to treat cerebral edema) used to pull water from the cells.
What is a hypotonic solution?
More water than solute. 1/2 NS. D5W. Used to push water into the cells.
What is the normal range of pH in the blood?
7.35 to 7.45. Measured by H+ concentration.
How does the body usually regulate acids?
Neutralized by bicarb, regulated by the kidneys.
What is the normal CO2 level?
45-35.
What is the normal HCO3 level?
22-26.
What is hydrostatic pressure?
Force within the fluid compartment on the walls, like BP on the blood vessels.
What is oncotic pressure?
Osmotic pressure extended by colloids in a solution, main contributor is protein.
What is hypothalamic regulation?
When plasma osmolarity is sensed to be off by the hypothalamic osmoreceptors. Stimulate the release of ADH for thirst, inducing water reabsorption. Once restored they stop releasing ADH.
What is pituitary regulation?
When the posterior pituitary gland releases ADH under the control of the hypothalamus for more water retention. When it is uneccesarily secreted, water retention occurs. Increases urine osmolality.
What is adrenal cortical regulation?
EFV control influenced by hormonal factors to regulate electrolytes and water through GLUCOCORTICOIDS and MINERALCORTICOIDS.
What are glucocorticoids?
Anti-inflammatory components and increase serum glucose levels. Crotisol in large doses act as both glu and min.
What are mineralcorticoids?
Enhance sodium retention and potassium excretion such as aldosterone.