Pharmacy Tech Section 2B Definitions
Terms
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- Parental products
- drugs administered via injection
- Aseptic technique
- “aâ€=without, “sepsisâ€= fever causing organism, refers to the preparation of a previously sterilized product without the introduction of microbacterial contamination
- Barrel
- a calibrated tube, tapered at one end to allow for the attachment of a needle
- Luer-Lock
- secures the needle with a threaded ring
- Plunger
- contains a lip or flat disc at one end and a cone-shaped rubber piston at the other end
- Hub
- used to attach the needle to the syringe
- Shaft
- usually metal and is coated with a sterile silicone coating for ease of insertion
- Bevel tip
- the tip of the needle shaft is beveled to form a point
- Gauge
- diameter of the needle
- Transfer Needles
- specially designed needles which look like 2 needles attached together at their hubs
- Filter Needles
- needles which contain a filter near the hub of the needle
- Core formation/ Coring
- when a needle is inserted improperly through the rubber closure of a vial, pieces of rubber may be carved out as the needle is inserted and cause contamination of the parental product
- Vials
- glass or plastic containers with rubber stoppers secured to its top by an aluminum band
- Closed-system containers
- they do not allow for the equalization of either increased or decreased pressures
- Positive Pressure
- if air or a volume of a solution is introduced there is no passage out of this increased pressure and therefore pressure inside the vial is greater than outside the vial
- Negative Pressure/ Vacuum formation
- if the pressure inside the vial would be lower than the pressure outside the vial and therefore air or drug solution would prefer to be drawn into the vial
- Large Volume Parentals
- IV solutions packaged in glass or plastic containers holding 10mL or greater
- IV Injection
- is the administration of a relatively small volume of medication from a syringe over a short period of time
- IV Infusion
- is the introduction of large volumes of fluids over long periods of time
- Intravenous Piggyback
- having two containers flowing into the patients vein through a common tubing and a common injection site
- pH
- the degree of acidity or basicity of a solution
- Isotonicity
- the physical phenomenon related to the number f solute particles in a solution
- Hypotonic
- if a RBC is placed in a solution containing less particles than blood
- Hypertonic
- if the RBC is placed in a solution containing a greater number of particles than blood