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Infusion therapy definition
The delivery of parenteral meds & fluids through a variety of catheter types & locations using multiple techniques & procedures
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What is infusion therapy used for?
- Blood transfusions
- Maintenance
- Medications
- Nutrition - TPN
- Replacement
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Parenteral Replacement - Crystalloids
- Include IV fluid, electrolyte therapy, & total parenteral nutrition
- Fluids that supply water & sodium & contain electrolyes
- Replace fluid deficits
- Maintain & manage specific fluid/electrolyte disturbances
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Parenteral Replacement - Colloids
- Blood components used to increase the colloidal oncotic pressure
- Moves fluid from interstitial into intravascular space
- Called plasma expanders
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Advantages of IV therapy
- Anesthetics
- Fluids
- Medications
- Provides access route
- Route of choice - for products not absorbed orally (hepatic first pass)
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Disadvantages of IV therapy
- Allergic response
- Dislodgement
- Embolism
- Fluid overload
- Pain
- Precipitation
- Sepsis
- Transmission of HIV/Hepatitis
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Water Distribution - Intracellular fluid (ICF)
Fluid contained within the cells. It is 40% of adult body weight & 70% of total body water.
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Water distribution - Extracellular Fluid
Fluid that is outside the cells. It is 20% of adult body weight & 30% of total body water.
- Intravascular/plasma is fluid within the vascular system
- Interstitial (ISF) fluid surround tissue cells. These solutions exist in small spaces between body structure, cells, & tissue
- Transcellular fluid is confined to a specific area or region of the body such as cerebrospinal fluid, sweat, ocular fluid
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Water Distribution - Osmolality
- Measures the concentration of dissolved particles in blood.
- IV fluids have an isotonic, hypotonic or hypertonic osmolality.
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Isotonic
Balanced cells - no effect on cells
- Remain in intravascular space
- Used to treat hypotension resulting from hypovalemia
- Compatible with plasma
- Can be infused at a faster rate
- Expands intravascular compartment
- EX: Lactated Ringers, 0.9% NaCl (full strength)
- Normal Saline
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Hypotonic
Over hydrates cells - cells swell
- Used to hydrate intracellular & interstitial compartments
- Rate must be carefully controlled
- EX: 0.45% NaCl (1/2 strength) - No Dextrose
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Hypertonic
Cells swell
- Greatly expands intravascular compartment
- Extreme caution used to prevent fluid overload
- EX: 3% NaCl, 10% Dextrose 0.45% NaCl, 5% Dextrose - given for low sodium
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Routes of Administration
- Peripheral
- Central
- Arterial-intra-arterial chemotherapy
- Central nervous system
- Clysis
- Intraosseous
- Intraperitoneal
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ROA - Peripheral
- Don't put in legs or feet
- Don't go higher than 10% Dextrose
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ROA - Central
- Be careful not to pull out!
- In central vessel, subclavian (most common), jugular
PICC - peripherally inserted central catheter - can last 6 months
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ROA - Arterial-intra-arterial chemotherapy
In hepatic artery
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ROA - Intraperitoneal
Into the peritoneal cavity for tumors confined to that area
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ROA - Central Nervous System
- 1. Epidural - into the epidural space of the spinal column located between the wall of the vertebral canal & the dura matter
- 2. Intrathecal - into the ventricular cerebrospinal fluid to provide chemotherapy, pain meds, or ABX for patients with cancer, pain, or infection. It is placed into one of the lateral ventricles
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ROA - Intraosseous
Into the medullary space of long bones
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ROA - Clysis
Hypodermoclysis - sub q - people who are dying
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Assessment - Local problems
- Pain
- Vesicant - solution capable of causing destruction or injury if it escapes into the tissue such as KCL or chemotherapy
- Extravasation - vesicant - can cause blistering or sloughing
- Infiltration - IV catheter has become dislodged, resulting in a non-vesicant solution leading into the extravascular space. It causes the site to be cool, pale, swelling & can lead to compartment syndrome.
- Compartment Syndrome - increased tissue pressure in a confined anatomical space which causes decreased blood flow to the area
- Occlusion/displacement - IV in middle of arm & pt bends arm or clot in IV
- Phlebitis - inflammation of the vein, cordlike, erethyma, may feel warm. TX: elevate & warm compresses
- Thrombosis
- Hematoma
- Venous spasm - contraction of vessel wall, cold solutions, certain meds can cause this (Dilantin)
- Cellulitis - diffuse inflammation & infection of cellular & sub q tissue.
- Nerve damage - from incorrect placement
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Assessment - Systemic Complications
- Contamination
- Sepsis
- Med/fluid incompatibility
- Allergic reaction
- Embolism (air) - turn pt on left side
- Speed shock - too rapid infusion, get a pounding headache, chills, apprehensive
- Circulatory overload - crackles, increased BP
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Infection Control
- Handwashing
- Chlorhexidine - antiseptic of choice
- Iodine preps - allergic to shellfish?
- Dressing changes every 72-96 hours
- Tubings q 72-96 hours
- Check policy
- Central line tubing q 24 hours
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Documentation
- Solution ordered
- Rate of infusion
- Type of device
- Site & dressing
- Client teaching/response
- D/C IV
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Geriatric Considerations
- Altered immune system
- Confusion
- Inadequate diet
- Infection
- Long term diuretics
- Malnutrition
- Skin integrity
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Equipment - drip sizes
- Standard / Macrodrop - 10 gtt/mL, 15 gtt/mL, 20 gtt/mL
- Microdrop Minidrip - 60 gtt/mL
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