3. aseptic dispensing
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Transcript of 3. aseptic dispensing
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ASEPTIC DISPENSINGChapter# 3
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CONTENTS
ASEPTIC DISPENSING OF:
I/V Admixtures OR I/V additive solutions TPN OR Hyperailimentation Cytotoxic Dispensing Semi-sterile Dispensing (Eye drops, Ear
drops)
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I/V admixture (I/V additive solutions) Sterile product produced when one or
more drugs are added to the IV solutions/fluids.
Additive – drug added to IV solution IV fluids
Large volume parenteral to be administered by intravenous infusion.
Group of sterile products referred to as large-volume parenteral
Prepared with Water for Injection, USP
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Cont...Used in: Correction of disturbances in electrolyte
balance Correction of disturbances in body fluids
(fluid replacement) Vehicles for other drug substancesExamples
Dextrose 5%, 10% Injection NaCl Injection (0.9%, 0.45%) Dextrose and NaCl Injection
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Preparation & dispensing of IV additive solutions
Steps1. Receipt of physician order.
Pharmacist work from physician’s order sheet.2. Prepare the label.
Label provide information:▪ Patient identification with location.▪ Physician’s name▪ Drugs with quantities▪ Date of compounding▪ Expiry date▪ Pharmacist name
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Cont...
3. If necessary – prepare additional label. Positioned in upside down – to facilitate
when container is hung from pole on patient’s bed.
4. Preparation of IV solution – always in LFH. Using sterile needles, syringes etc.
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Cont...5. Once drug is added – new seal
crimped on container. Seal colour should be different – warn
that drug has been added.
6. Before supplying – final inspection by pharmacist. Like label, clarity of solution and
calculations of preparation
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TPN or Hyper-alimentation IV administration of sufficient nutrients
above usual basal requirements to achieve; Tissue synthesis Positive nitrogen balance & Anabolism
Used for specific patients – unable in enteral feeding.
Also known - TPN
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Cont... TPN – part of total patient care. Simple procedures for its preparation. But require appropriate facilities & equipments.
Such as LFH – provide controlled environmental conditions.
Pharmacist – should know about: Preparation methods Stability & compatibility Facilities Equipments ▪ Required for this program.
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Cont...Stability & compatibility TPN – consists of various ingredients.
i.e., complex pharmaceutical system Possibility of interactions &
incompatibility between entities present. So increase risk of its toxicity to patients.
Pharmacist – thorough understanding of stability & compatibility issues. Should consult available literature before
preparing TPN.
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Cont...
Facility & environment TPN – require aseptic environment.
So LFH are used.
Personnel & training Trained personnel – should carry out
aseptic preparation of TPN. Should know about patient requirements
& product use.
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Cont...Documentation Work sheet – should be designed for
TPN dispensing & maintained.
Work sheet contain information about: Materials, patient name, label details
etc.
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Cont...
Manufacturing procedures Should be developed jointly by
production & quality control staff. On receiving request for TPN
Feasibility & stability is checked within normal clinical limits of requested combinations.
Information is then transferred to dispensing work sheet.
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Cont...
Collection of materials & preparation In this case – first step is identification &
collection of all materials required.
Pharmacist – check these against the work sheet & then sign it.
When more than one TPNs are processed – care necessary to avoid intermixes of source materials, labels etc.
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Cont... Materials – placed well within LFH. Organized in manner which will facilitate
systematic steps. And cause minimum disruption of air flow.
Inspection TPN bag – inspected for integrity of;
All ports Leaks Particulate materials
TPN – should meet criteria for limit test of particulate material.
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Cont...
Labelling Label should contain:
Patient name/number Ward Product constituents Batch no. Expiry date Storage conditions etc.
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Cont...
Storage TPN – stored at 2-6 °C.
to protect it from microbiological & chemical degradation.
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Cont...Packaging Quality of packaging systems –
should comply QC standards &
To maintain product temp. during transfer.
Insulated polystyrene containers – most useful.
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Cont...
Dispensing TPNs – dispensed according to above
mentioned procedure.
In addition – pharmacist in ward should check that TPN is administered correctly.
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Cont...Charging of TPN TPN compounding service – costly for
pharmacy dept. Amino acids & lipids itself – costly items.
Pricing of TPN requires – identification of materials cost & labour costs etc.
All factors considered – before deciding in-house mfg; or obtain product from other hospital or manufacture supply.
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Cytotoxic dispensing
Cytotoxic drugs – can kill cells. So used in treatment of cancer & to
destroy tumour & neoplastic cells.
Most cytotoxic injectables – available in powdered form. Require reconstitution.
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Cont...
Pharmacist – can provide cytotoxic reconstitution service. Because of knowledge in pharmaceutics,
pharmacology, pharmaceutical chemistry & pharmacokinetics.
▪ Knowledge necessary for understanding:pharmacological action of cytotoxic drug & their stability in solution.
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Cont...AREA OF SKILLS NEEDED FOR PHARMACIST
Safe handling Cytotoxic agents – non-selective so far & can
destroy some healthy tissue as well. So precautions necessary for personnel handling
them. Exposure to cytotoxic agents may cause:
Irritation of mucous membranes, eyes, skin Light-headedness, nausea, headache Allergic reactions Risk of malignancy, teratogenesis, leukaemia,
infertility
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Cont...
So if proper precautions & procedures are followed then: possible direct exposure, inhalation of aerosolized drugs or ingestion – can be eliminated.
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Cont...Preparation areas LAF cyctotoxic cabinet used for preparation.
Provides;▪ Product protection▪ Worker protection
Cytotoxic cabinet – reserved only for cytotoxic drugs.
Ventilation of area – should be adequate. But doors & windows – closed to prevent
draughts.
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Cont... Working area – non-porous.
So can be easily cleaned.
Equipments & drugs – arranged in orderly manner. To avoid accidents.
Neutralizing solutions – close to hands. To neutralize effects of spills.
Horizontal LAF – never be used.
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Cont...Techniques & precautions Prior to dispensing – product reconstituted.
But maintaining sterility of product & Ensuring maximum protection to operator.
Eating, smoking, drinking – prohibited in work area.
Suitable protective clothings & gloves – protect skin. Latex gloves used commonly.
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Cont... Surgical face masks – to prevent inhalation.
Goggles – protect eyes. Should be washed after use.
Reconstitution – carried out on solid surface. Cleaned easily.
Broad edge tray – suitable when LFH surface is perforated.