BLOCK 5: MED ADMINISTRATION Flashcards
what is the insertion of a catheter in to a body cavity, duct, or vessel to allow for blood flow
cannulation
what is a bolus
single dose administered by IV
what are HRO’s and how are they relevant in medical field
high-reliability organization
focuses on double-checks like cross-checking a medication before administration, etc to ensure a single failure does not lead to patient harm
what is medical asepsis
preventing contamination from pathogens by using aseptic technique to prevent contamination of a site when performing invasive procedure
what are antiseptics and examples
used to cleanse an area before performing invasive procedure like IVs
examples: rubbing alcohol, iodine, chloraprep
difference between antiseptics and disinfectants
antiseptics are not toxic to living tissues, disinfectants are
leading cause of disease transmission in healthcare setting
needlesticks
how many liters of fluid does a healthy person lose a day
2-2.5L
definition of dehydration
inadequate total systemic fluid volume
what is the cardinal sign of overhydration
edema
what is the benchmark to calculate a solution’s tonicity
sodium
what is the concentration of sodium in the cells of the body
0.9%
IV solutions are categorized as either ___ or ____ based on their dissolved components
crystalloid or colloid
IV solutions are categorized as ___, ___, or ___ based on their tonicity
isotonic, hypotonic, hypertonic
what are crystalloid solutions
dissolved crystals in water with ability to cross membranes
fluid should be administered to restore ___ not ___
perfusion, normal BP level
BP during fluid bolus should be titrated to what
90mm Hg systolic
what are colloid solutions
contain molecules too large to pass through membranes, draw fluid from cellular compartments to reduce edema
isotonic solutions and their effect on the cell
have same sodium concentration of cell
water does not shift - no cell shape change
hypertonic solutions and their effect on the cell
greater sodium concentration than cell
water is drawn out of cell - cell may collapse
hypotonic solutions and their effect on the cell
lower sodium concentration than the cell
water flows into the cell - causes cell to swell or burst
what is osmolarity
concentration of sodium
what common solutions are isotonic
normal saline, lactated ringer, D5W
what is third spacing and who is at risk of it
abnormal fluid shift into body’s serous linings
patients with burns, trauma, malnutrition, or liver disease that receive a hypotonic solution
what is the best fluid to replace blood loss and why
whole blood because it contains hemoglobin to carry oxygen to cells
what is the cannulation of a vein with a catheter to access patient’s vascular system called
intravenous therapy
once the protective wrap around IV solutions is removed, it must be used ____
once the pigtail is removed from the port, the IV solution, it must be used ____
within 24hrs
immediately or discarded
two ports of an IV bag
injection port for meds and access port for connecting administration set
most common prehospital IV volumes
1,000 and 500mL
what is the drip size
how many drops it takes for 1mL to pass into the drip chamber
microdrop sets
60drops per mL
macrodrip sets
10-15 drops per mL
what is a volutrol
microdrip set that allows you to calibrate the drip chamber with a specific amount of fluid to avoid fluid overload
what is blood tubing
macrodrip set for rapid fluid replacement with dual piercing spikes
how to identify valves and bifurcations in veins
valves: bumps in vein
bifurcations: where one vein splits into two
why use caution if using IV in leg
can put patient at higher risk of venous thrombosis and pulmonary embolism
3 factor’s of catheter size selection
purpose of IV, patient’s age, location
what is an over-the-needle catheter
teflon catheter inserted over the hollow needle and uses automatic needle retraction after insertion
what is a butterfly catheter
hollow stainless steel needle with two plastic wings for handling
how far up from intended puncture site to place tourniquet
4-8 inches
what angle to establish and IV at and what angle to advance the catheter at
35-45 degrees
15 degrees
change the IV bag when there is approximately __mL of fluid left
25
cannulating the EJ vein comes with what high risks
puncture of carotid artery with rapidly expanding hematoma and air embolism
what is infiltration vs. extravasation
infiltration: escape of fluid into surrounding tissues
extravasation: escape of irritating agent from vessel which causes blistering
what is catheter occlusion
physical blockage of a vein or catheter
what are venous spasms caused by
severe reaction to administration of irritating meds or fluids
what is phlebitis
vein inflammation
what is thrombophlebitis
inflammation of a vein related to a blood clot