IV Fluids-Electrolytes Flashcards
What is the unit of measurement for electrolytes?
Millimole (mmol)
What are the electrolytes in your body?
Sodium (Na+), potassium (K+), calcium (Ca++), magnesium (Mg++), chloride (Cl-)
Types of IV solutions
Colloids, crystalloids
What are crystalloid solutions used for?
Isotonic, hypotonic, hypertonic
Electrolyte replacement
Route for medication
Short term intravascular volume expansion
Colloids
Do not dissolve but form a suspension
Do not pass through semi-permeable membranes but will cause H2O to cross the membrane through osmosis to equalize concentrations
Crystalloid
Solutions truly dissolve, molecules or atoms separate and disperse completely and equally throughout solvent
Dissolved molecules cross the membrane through osmosis to equalize concentrations
Dehydration
Inadequately total systemic fluid volume
Chronic condition of elderly or very young
Signs of dehydration/hypovolemia
Decreased urine output, hypotension, weak pulse, tachycardia, dry mucous membranes, skin turgor
What can cause dehydration/hypovolemia
Vomiting, diarrhea, blood loss
Fluid overload
Total systemic fluid volume increases
Fluid overload signs
Hypertension, pulmonary crackles, SOB, peripheral edema, JVD, bounding pulse
What can cause fluid overload
Cardiac failure, IV fluid mistakes, renal failure, HTN
Isotonic solutions
Expand the contents of the intravascular compartment without shifting fluid to or from other compartments
Types of isotonic solutions
Normal saline 0.9%
Ringer’s lactate
Isotonic solution 3 to 1 rule
3mL of isotonic crystalloid solution is needed to replace 1mL of patients blood
How long does it take for approximately 2/3 of infused IV fluid to leave the vascular space
1 hour
0.9% normal saline mechanism of action
Replaces fluid and electrolytes, isotonic solution