IV theory Flashcards
Hypotonic solution
Lower solute in the solution than the cell causing water to go into the cells (NS, LR)
Cytolysis
Hypertonic solution
Higher solute in the solution causing water to leave the cell (Mannitol)
Plasmolysis
Isotonic solution
Equal inside and outside the cell
Crystalloids
Dissolved salts and sugars creates crystalloids.
Contains no proteins
Stays in intravascular space shortly before diffusing across capillary walls into tissue
Colloids
Contains large molecules like protein
Doesn’t pass through capillary membrane as fast
Micro sets
Always 60 gtts/ml
Delivers meds over a long period of time
Assists in precise measurement of medications
Controls amount of fluid and fluid overload in certain patients
Macro sets
10, 15, 20 gtts/ml
Most common utilized admin sets
effective for TKVO and large fluid admin (bolus)
Local complication- Infiltration causes
Causes: dislodgement of the catheter from the vein, puncture of distal wall, leakage of solution/medications into surrounding tissue, poorly secured IV, poor vein/ site, irritating solution/med that inflames intimate of vein, improper cannula size, high delivery rate/ pressure of solution/meds
Infiltration S&S
coolness of skin around IV site, swelling at IV site with/without pain, sluggish/absent flow rate, infusion continues to infuse when pressure is applied to vein above tip of cannula, no back flow of blood into IV tubing when clamp is open and solution lowered below IV site
Infiltration treatment
discontinue IV, confirm catheter is intact, restart IV away from site, ice pack if needed, document incident
IV complication- Hematoma
Blood collects outside the vessel after catheter passes through the vein
S&S: redness, tenderness, pain, swelling
Treatment: after catheter is removed, make sure it is intact, apply light direct pressure to site, cover and document the condition
IV complication- Phlebitis
Inflammation of the vein caused by injury to the vessel wall
S&S: pain, swelling, redness, tenderness
Treatment: use of an appropriate size catheter to cannulate vein
IV complications- Local infection
Infection present at/ around Iv site after IV initiation (3-4 days after IV)
S&S: redness, foul discharge/ odour at site
Treatment: upon IV canulation ensure clean site, sterile tubing/ catheter, proper PPE precautions
Air embolism (systemic complication)
Caused by air entering blood stream via catheter tubing during insertion, tubing is disconnected to replace solutions, or new extension tubing
Air embolism S&S
hypotension, cyanosis, weak/ rapid pulse, loss of consciousness