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Chapter 12. Administering Medication. Basic Knowledge about Medication Administration. 1. Oral Administration. 2. Parenteral Administration. 3. Inhalation Administration. Medication Anaphylaxis Test. Topical Administration. 4. 5. 6. Contents. Section 1.
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Chapter 12 Administering Medication
Basic Knowledge about Medication Administration 1 Oral Administration 2 Parenteral Administration 3 Inhalation Administration Medication Anaphylaxis Test Topical Administration 4 5 6 Contents
Section 1 Basic Knowledge about Medication Administration
Contents • Drug Forms, Distribution System and Medication Storage • Principles of Administering Medications • Routes of Administration • Times and Time of Administration • Contributing Factors of Drug Actions
Aerosol spray Aqueous solution Aqueous suspension Capsule Enteric-coated tablet Extended/ sustained release Extract Glycerite Liniment Lotion Ointment Paste Pill Powder/granule Suppository Syrup Tablet Tincture Transdermal disk or patch Troche (lozenge) Drug Forms
Four kinds • oral medications • external medications • for injection • new preparations
Distribution System • Stock Supply System • Unit-dose System • Computer-controlled Dispensing System
Store medication • Cabinet • bright and ventilative, avoiding direct shine and keep clean, tidy and dry. • Placement of medications • Store separately according to their different routes (oral, injection, or topical), toxicity or untoxicity • Expensive drugs, narcotics and virulent toxicants must be taken charge of by a special nurse who should lock the cabinet and have the key always with her. • On every shift
Label the container of medications clearly • blue strip labels oral medications, • Red strip labels external medications, • and black strip labels virulent toxicants. • Label the container with name, concentration and dose of drugs • If the labels are soiled or illegible, discontinue using the medications
Check the medications carefully • Store the medications properly according to their different nature. • Medications which tend to volatilize, deliquesce, or effloresce should be kept in airtight bottles, e.g., ethanol, iodine, sugar-coat tablets.
Medications that will be oxidized if exposed to air and be denatured if exposed to light should be kept in airtight colored bottles. Cover the container with shade paper box if necessary and store it in the shady and cool area, e.g., Vitamine C 氨茶碱 盐酸肾上腺素
Biologic products and antibiotics that will be destroyed and decomposed if exposed to heat should be kept in the dry, and shady and cool area (about 20℃) or in refrigerator (about 2~10℃) according to their natures and requirements of storage, e.g., an antitoxic serum, vaccine, placental globin, penicillin skin test solution.
Medications should be used designedly according to valid periods in case of invalidation, e.g., antibiotics and insulin. • Store the inflammable and explosive medications in airtight bottle and place in the shady and cool area separately and keep them away from fire and electric appliances.
Principles of Administering Medications • Correct Transcription and Communication of Orders • Use the Guidelines of Three Checks and Seven Rights to Ensure Safe Drug Administration • Administer medication safely and accurately • Observe the client’s response to the medication after administration
Three Checks • the check before operation • the check during operation • the check after operation
Seven Rights • the right name of the client • right bed number of the client • right name of the medication • right concentration • right dose • right route • right time. • Quality valid
Routes of Administration • Oral Routes • Oral administration • Sublingual Administration • Buccal Administration • Parenteral Routes • Intradermal (ID) • Subcutaneous (SQ) • Intramuscular(IM) • Intravenous( IV) • Skin and Mucous Membrane Route • Inhalation Route the intrathecal or intraspinal, intraosseous, intrapleural, intraarterial, intraarticular, and intracardiac, routes Topical administration
Skin and Mucous Membrane Route • 1.Direct application of liquid or ointment (e.g., eye drops, gargling, swabbing the throat) • 2.Insertion of drug into a body cavity (e.g., placing a suppository in rectum or vagina or inserting medicated packing into vagina) • 3.Instillation of fluid into body cavity (e.g., ear drops, nose drops, or bladder and rectal instillation [fluid is retained]) • 4.Irrigation of body cavity (e.g., flushing eye, ear, vagina, bladder, or rectum with medicated fluid [fluid is not retained]) • 5.Spraying (e.g., instillation into nose and throat)
Declining sequence of absorption • Inhalation Route>Sublingual route>rectal route>intramuscular injection>subcutaneous injection> oral administration>skin route
Contributing Factors of Drug Actions • ADDITIVE • ANTAGONISTIC • DISPLACEMENT • INCOMPATABILITY • INTERFERENCE • SYNERGISTIC • Factors about The Drug Itself • Drug Dose Response • Drug Forms • Routes, time and interval of Administration • Drug interactions • Factors about The Body • Physiological Factors • Age and Weight • Sex • Pathological Factors • Psychological and Behavioral Factors
Section 2 Oral Administration
ORAL MEDICATIONS • Most common route • Convenient • Least expensive • Most meds available in this form • Easy to counteract overdose or toxicity
Indications • Clients who are able to swallow solid and liquid
Contraindications • 1.Clients with impaired swallowing function • 2.Unconscious clients • 3.clients who refuse to take medications orally • 4.clients with vomiting or/and nausea • 5.clients with gastric or intestinal suction • 6.clients with bowel inflammation or reduced peristalsis • 7.clients with recent GI surgery
DIFFERENT FORMS • Capsules • Tablets • Elixirs • Emulsions • Lozenges • Suspensions • Syrups
NASOGASTRIC ADMINISTRATION • For patients who cannot swallow • NG tubes • Similar to oral administration
Skills _Equipment • Medication cards, sheets, or records Medication cart or tray • Medication cups, measuring cup, drop tube Drinking straws • Pill-crushing or pillating device(研钵) • Kettle with warm water • Paper towels See disk
Procedure Medication preparation 1.Wash hands, wear mouth mask and assemble the equipment 2.Follow the three checks and seven rights principle. 3.Prepare medications with appropriate method based on different forms of medication . Fetching meds from bottles.
Fetching Method Solid(tablet/capsule)with spoon pediatric、 NG tubes or Gastric bleeding, pill-crushing device such as a mortar or pestle or grind pills Pouring liquid meds with measuring cup <1ml,with Drop tub
Administering medication 1.Wash hands. TakeMedication cards, sheets, or records Medication cart or tray to bedside. 2.Offer medications and warm water 3. Assist clients with critical illness or pediatric clients. For NG, grind meds. 4.Teach clients the effects and cautions of meds 4.Clean the cup See disk
Guidelines followed when administering oral medications • 1.Always administer a drug with warm boiled water of 40~60℃ instead of with tea. • 2.Medications that erode teeth such as acid and chalybeate should be sucked with a sucker and then rinse to protect teeth. • 3.Never chew, crush or break sustained release tablets, enteric-coated tablets and capsules
4.Place lozenges under the tongue or between buccal membrane and teeth dissolved slowly rather than allow clients to chew or swallow. • 5.Generally, stomachic medications are appropriately taken before meal, while those irritating gastric membrane taken after meal. Hypnotics is properly taken before sleep and parasiticides taken in limosis or half limosis.
6.Antibiotics and sulfonamide should be taken at certain interval to ensure effective drug blood concentration. • 7.Avoid giving fluids immediately after a client swallows medication such as syrup that exerts local medicating effects on the oral mucosa
8. Allow the client to drink more water after sulfonamide is taken to prevent the crystal which the drug produces when excreted through kidney with the less urine volume to block the nephridium. • 9. Observe the heart rate and rhythm closely when cardiotonic is taken. If the heart rate is lower than 60 times per minute or arrhythmia occurs, discontinue to use the drug and inform the physicist.
Section 3 Parenteral Administration
Parenteral Administration • Concept • the process that injects a certain volume of sterile solution and/or biological products into human body by using sterile syringe • Purpose • to prevent, diagnose and cure disease.
Characteristics • Appropriate for clients unable to take meds orally • Rapid absorption • Difficult to Counteract Adverse Reaction • Invasive procedure, be performed using aseptic techniques
Contents • Principles of Injections • Equipment • Draw medication • Common Injection Methods
Principles of Injections • Apply Sterile Technique Strictly • Carry out Check Principles Strictly • Perform Disinfection and Seclusion Policy • Appropriate Syringe and Needle • Appropriate Injection Site • Prepare and Administer Temporarily • Eject Air thoroughly • Note Blood Return • Insert Needle at Appropriate Angle and Depth • Give No-Pain Injection
Apply Sterile Technique Strictly • Preparation of nurses • Sterilize the local skin over injection site as required • Maintain sterility of equipment
Carrying out Check Principles Strictly • three checks and seven rights • inspect the package of medication and sterile equipment
Perform Disinfection and Seclusion Policy • every client individually uses one series of equipment • All of used equipments are disposed according to the disinfection and seclusion policy
Appropriate Syringe and Needle • Consider route of injection • Other factors • dosage, viscosity, irritation of medication, and the age, height, and weight of the client, the site of injection • check the package and the expiration date • check whether the needle is sharp, without crooks, and is tightly connected with tip of syringe
Appropriate Injection Site • away from nerves, bones, and blood vessels • free of inflammation, bruises, itches, edema, nodules and scars • change the site for each injection • When intravenously injecting, a distal site first, proximal site later.
Prepare and Administer Temporarily • The medication solution is prepared and dispensed when administered • To prevent from the lower effect or contamination
Eject Air thoroughly • If not, arouse air embolism
Note Blood Return • administering by SQ(皮下),ID, or IM, no blood return appears • By IV or IA, blood return appears