1. Pharmacology 2. Pharmacodynamics PHARMACOLOGY The study of drugs and their origin, nature, properties, and effect upon living organisms The study of drugs and their actions on living organisms a. Time it takes for a medication to take effect a. onset b. Peak affect b. When the medication reaches it desired effect is greatest without any major side effects c. The length of time that a drug is completely effective c. Duration of action 3. Pharmacokinetics The study of the metabolism and actions of drugs with emphasis on absorption, duration, distribution in the body, and method of excretion a. The movement of a drug through the blood system a. absorption b. Medication reaching the target cells or organs in the body b. Distribution c. After hitting the target organ for best effects the drug is broken down in the system into an inactive substance c. Metabolism d. The inactive broken down substance is then excreted from the body through the kidneys, GI tract, lungs and/or excretory glands. d. Excretion Drugs 1. Actions a. Agonist Any chemical substance taken into the body for the purpose of affecting the body's functions Types of medication actions and effects a. A substance that binds to receptor cells in the body causing the med to have its desired affect b. synergist b. It is a form of an agonist. Two drugs that work together to form a more powerful effect for the patient. Example: when Versed and Fentanyl are given together there is less need for inhalant dangerous gases during anesthesia c. Antagonist A drug which interferes with the receptor cell in the body and causes a drug to not have its intended affect on the body d. Addictive d. Certain drugs when added to another medications will change the affects of that drug Example: Epinephrine added to short acting Lidocaine will help to prolong the drugs effectiveness 2. Therapeutic actions 1 a. Indications b. Contraindications 3. Effects a. Side effects b. adverse effects c. toxic effect d. Tolerance e. Addiction 1. Chemical name a. Each drug has a specific use and is listed for use with regards to specific conditions b. Every drug has a list of conditions that it should not be for. i.e. pregnancy is a contraindication of many drugs a. These are undesirable effects from a drug b. This is also and undesirable effect but could be extremely harmful to the patient. i.e. Tylenol has an adverse reaction on the liver. Ibuprofen has an adverse reaction on the kidneys c. Some drugs can cause toxic situations especially if they are used for a prolong period of time. They can be toxic to any organ in the body. They may cause cancer in a patient or they can cause birth defects if the pregnant mother is taking a certain drug. d. The patient becomes immune to the medication because they have been on it too long or too many times e. A physical and psychological attachment to a drug. Unable to stop the use of the drug Types of Names for Drugs Exact chemical formula of a drug Usually a long, very difficult name to pronounce and of little concern to the health care worker 2. Generic name Common or general name assigned to the drug when it is marketed Differentiated from trade name by initial lowercase letter 3. Trade name or brand name Name by which a pharmaceutical company identifies its product; is copyrighted and used exclusively by that company Can be distinguished from generic name by capitalized first letter Symbol ® is used behind the name to indicate it is a “registered” trademark. Medication Classifications a. These substances are prone to high abuse. b. These are sanctioned by the FDA. They are street drugs. c. There is no accepted medical treatment determined for these substances d. Because the FDA does not sanction these drugs they are not considered to be safe. Marijuana, Heroin 1. Controlled substances (Schedule IV) Schedule I Drugs. Schedule II Schedule III Schedule IV a. Highly addictive and potential for abuse b. These have medicinal value for treating a persons diseases or symptoms but can have severe restrictions c. Abuse could lead to a dependency for the medication by the person Examples: codeine, fentanyl, methadone, morphine a. These drugs have a potential for abuse but less so that Schedule I or II b. Used for accepted treatment c. Low physical dependency and potentially high psychological dependency Examples: Anabolic steroids, Ketamine, hydrocodone, Vicodin, Tylenol 3 a. Low level of abuse compared to I-III 2 b. They are accepted for treatment of diseases and symptoms c. Lesser chance of addiction that the other levels of schedule Examples: Xanax, Valium, Klonopin, Phenobarbitol Schedule V 2. Prescription Drugs 3. Nonprescription medications known as over the counter 4. Alternative Medication 1 Narcotic Precautions 2. Personnel negligence a. A much lower level of abuse than the other schedule levels. b. These substances are accepted for use in treatment of diseases and symptoms c. May lead to minimal physical and psychological dependence. Examples: Cough syrup Promethazine with codeine, lomotil Pseudoephedrine which is found in many antihistamines was used inappropriately by drug users so the federal government has regulated pseudoephedrine by making it necessary for the consumer to sign a registry and give valid photo ID before they can purchase any medication containing pseudoephedrine Drugs that require a physician prescription so that the directions of how to take specifically for each person is available. The prescription includes the patient’s name, MD’s name, type of medication, dosage, route of administration and timing of the medication a. Anyone can purchase the medication from a shelf. Direction for usage are printed on the box or an information sheet inside the box. b. Many of these drugs were prescription drugs released by the FDA after significant use and monitoring. FDA feels that they are safe for use as an over the counter medication a. Homeopathic remedies b. Herbal remedies These are for the individual to determine the method of treatment they wish to take. Medication /Solution Violations a. Narcotics should only be taken under the direction of a physician. b. They are known for the depression of the central nervous system i.e. Difficulty breathing c. Liver damage could present a problem because it may not be able to detoxify the body of the drugs taken which could result in an overdose. d. Narcotics obtained from dealers could have toxic chemicals or contain life-threatening compounds. a. The staff of any medical facility must know what meds they are given, dosage of the meds, and the proper route for administration. b. Not knowing this information could result in the patient receiving wrong dosages as well as the wrong route. These situations could result in an overdose and death of the patient. c. Incorrect drugs or incorrect administration could lead to very serious implications for the patient and the staff. Medication /Solution Violations ALL MEDICATIONS ON YOUR FIELD MUST BE LABELED. It is the only way that you will know you are giving the proper medication at the proper time. ALL MEDICATIONS SHOULD BE ANNOUNCED TO THE PHYSICIAN AT THE TIME THAT YOU ARE HANDING THE MEDICATIONS. IT SHOULD INCLUDE 3 3. Consequences to patient 1 Healthcare facilities policies and procedures 2. State regulations can be obtained at: THE NAME AND STRENGTH OF THE MEDICATION!! Patient can have an adverse reaction to a medication if they should not receive it especially if they are allergic. Patient could ultimately die from the wrong dosage or wrong administration process. Laws, Policies and Procedures a. It is your responsibility to find out what the hospital’s policies and procedures for medication administration are so that you can comply appropriately. http://www.ct.gov/dcp/cwp/view.asp?a=1618&q=275808&dcpNav=|#drug Federal Laws: Most of the laws are created under the Food and Drug Act or the Drug Enforcement Administration. Either of these sites would be able to give you specific information 3. Types of Medication Orders a. Standing orders are ongoing orders. They can be found in the operating room often times on surgeon’s preference card. Specific cases may have standing order sheets which are implemented by sending the order form to pharmacy for the medications and the MD order form is kept on the patient chart. b. Stat Medication that needs to be given immediately. c. Verbal MD orders medications by giving a verbal order to an RN. d. PRN (Pro Re Nata, Latin for as needed) This medication is only given as needed such as with pain medications. It may be ordered but if the patient has no pain then the drug would not be given Common Sources of Information Most widely used annual reference publication for drugs in current use Contains information concerning drug actions, indications, warnings, and precautions, dosages, rout of administration, adverse reactions, overdose, drug interaction and contraindications Provides information to physicians Is used primarily by drug companies and pharmacies Includes annual up-to-date information on carcinogen Contains concise information and is easy to read 1. Physician’s Desk Reference (PDR) 2. United States Pharmacopoeia and National Formulary 3. American Hospital Formulary Service Drug Information (AHFS) Is an annual publication distributes to practicing physicians 5. The Joint Commission National Patient Safety Goals Goals developed by JCAHO to help hospitals provide better care to the patient. Usually developed because of sentinel events occurring. 4 1. Plants Sources of Drugs Berries, leaves, roots, resin and bark from trees were found to benefit the body and are still in use today. 2. Minerals 3. Animals 4. Synthetics Deficiencies of substances in the human body are often replaced with substance from the glands, organs and tissues of animals Drugs acquired from cattle are called bovine and those from swine are called porcine. Are manufactured by humans and produced from artificial substances rather than natural substances Can be manufactured totally from laboratory chemicals or semisynthetic drugs Can be activated with a natural substance rather than altered chemically 5. Biotechnology Genetic engineering (recombinant DNA technology) is the newest technology being used to synthetically mass produce previously rare and expensive drugs. By introducing un related DNA into the DNA of specific organisms, DNA can be artificially created. DNA A distinctive pattern of bands which aid in the identification of the origin of tissue and body fluids. Types of Drug Absorbed through the alimentary tract • Routes of administration can be oral, buccal, or sublingual 1. Solids 2. Semi-solids Are meant to have a topical or systemic effect • Can be applied directly to skin or mucous membranes to produce the desired effect 3. Liquids Contain drugs that are dissolved in a base a. Suspension a. Fine, undissolved solid particles of a drug suspended with a liquid b. Emulsion b. A mixture of two liquids not mutually soluble, such as fat and water c. Solution c. A liquid drug containing a dissolved substance d. Tincture d. A solution that contains an alcohol and water base; used topically e. Elixir e. A sweetened, aromatic solution with an alcohol and water base f. Syrup f. A concentrated solution of sugar, water, and flavoring which contains no alcohol g. Liquid sprays g. A solution of a drug containing water or alcohol administered as an aerosol or spray h. A mixture of finely divided gas bubbles interspersed in a liquid h. Foam 5 4. Gases Are introduced into the respiratory tract to provide a systemic effect Route of Administration of Drugs 1. Oral Administered through the mouth into gastrointestinal tract 2. Buccal Places between the cheek and the gums until absorbed or dissolved 3. Sublingual Placed under the tongue until the drug has been absorbed or dissolved Applied directly to the skin, mucous membranes of the eyes, ears, nose or mouth, or on surface of structures in an open surgical wound Administered via the rectum 4. Topical 5. Rectal Used for the application of creams and suppositories 6. Vaginal Applied directly to the skin via a porous membrane for a systemic effect 7. Transdermal 8. Inhalation 9. Subcutaneous Involves inhaling a drug in the form of a gas or liquid into the alveoli of the lung Involves injection of medication into the fatty layer of tissue directly below the dermis of the skin Involves injection of a liquid directly into the muscle 10. Intramuscular 11. Intravenous Involves injection of liquid medication directly into a vein to produce a systemic effect Involves injection of a liquid into a joint in the body 12. Intra-articular Involves injection of medication directly into the heart 13. Intracardiac 14. Intrathecal 15. Instillation Involves the injection of medication into the subarachnoid space of the spinal canal The slow introduction of fluid or medication into a cavity or part of the body which remains there for a specific length of time before being drained or withdrawn Drugs absorbed through the intestines 16. Enteral 1. Analgesic Classification of agents Selectively suppresses pain without producing sedation 2. Analgesic-Antipyretic agents 3. Anticoagulants Selectively suppresses pain and also has a fever reducing component to it. Prevents the formation of blood clots by inhibiting one or several clotting factors 4. Anticonvulsants Reduces the number or severity of seizures in patients with epilepsy 5. Antiemetics Drugs that helps to stop nausea and vomiting 6 6. Antihistamine Blocks the effect of histamine release in an allergic reaction 7. Antibiotics, Antiinfectives Destroys bacteria and other pathogenic microorganisms a. Aminoglycosides a. Drugs made from molecule or a portion of a molecule composed of amino-modified sugars. Amikacin, arbekacin, gentamycin, knanmycin, neomycin, netilmicin, paromomycin, rhodostreptomycin, streptomycin, tobramycin and apramycin b. Antifungals b. Medication used to treat fungal infections such as ringworm, athletes foot, thrush and crytococcus meningitis c. Antimicrobial c. Medication that is used to kill or inhibit the growth of microorganisms (Penicillin and tetracycline d. Penicillin/ Cephalosporins d. One of the first antibiotics developed to treat bacteria especially gram-positive organism e. Polymyxins e. These drugs disrupt the structure of the bacterial cell membrane by interacting with the bacteria’s phospholipids. They work on grampositive bacteria. Polysporin, neosporin, polymyxin B or M. f. Sulfonamides g. Tetracycline f. These are sulfa drugs commonly used for urinary infections g. Are broad spectrum antibiotics; have a bacteriostatic action against many gram + and gram – bacteria Can be administered orally, topically, occasionally IM or IV 8. Antineoplastic chemotherapy 9. Autonomic agents a. Adrenergics Prevents the development, growth, or proliferation of malignant or cancerous cells b. Adrenergic blockers b. Blocks the secretion of epinephrine from the sympathetic nervous system c. Cholinergics c. Stimulate parasympathetic nervous system in same manner as does acetylcholine May stimulate cholinergic receptors directly or slow acetylcholine metabolism at synapses (affect the enzyme acetylcholinesterase) Useful in treating Alzheimer’s Disease, Myasthenia gravis and to treat poor muscle tone of the smooth muscle of the GI system or urinary system d. Anticholinergics d. Inhibits the parasympathetic response by manifesting the drying up of body secretions a. Imitates the action of the sympathetic nervous system by stimulating nerve fibers to release epinephrine 7 10. Blood Replacement Interventions a. Autologous blood a. b. Donated blood products b. c. Whole Blood d. Plasma Expanders 11. Cardiac Medications a. Antiarrhythmias Autotransfusion This is to prevent the need for blood bank blood during a surgery Self pre-donated blood prior to surgery Saved during surgery by a cellsaver and then reinfused to the patient 1. type and cross match Check of patient’s blood for the purpose of matching blood type to other people’s blood 2. Component therapy Blood can be separated into several different components. Blood can be given as whole blood Blood can be divided into plasma, packed cells, platelets c. All parts of the blood are given at one time d. Used for Circulatory Shock situations Types: 1. Crystalloids and Colloids a. Common Crystalloids used are normal saline (0.9% NaCl) or lactated Ringer's solution. b. Common Colloids include Albumin (found in blood), Dextran, Hyskon, Getran, Plasbumin Hetastarch (Hespan®) is also a common volume expander made of cornstarch Lidocaine Hydrochloride (Xylocaine) Effect the heart through the Purkinje Fibers by decreasing the depolarization and excitement Used mostly for ventricular anomalies or arrhythmia Pronestyl or procainamide Works through decreasing excitability and conduction in the hearts conduction system Used for ventricular anomalies and arrythmias Nitroglycerine Used for patients with angina symptoms due to myocardial ischemia Helps to increase coronary artery flow so the heart gets its nourishment by decreasing systemic vascular resistance They help to increase muscle contraction strength of the heart Digitalis which is derived from the plant foxglove helps to make the muscle work better. It is not curative but will help to prolong a person’s life Other agents that could be used for heart failure conditions: Amrinone (Inocor®) Digitoxin (Crystodigin®) Digoxin (Lanoxin®, Lanoxicaps®) Dobutamine (Dobutrex®) Milrinone (Primacor®) b. Coronary Dilators c. Inotropic 8 12. Central Nervous System Stimulants a. Analeptics a. An agent that works to stimulate a depressed nervous system They increase attention and decrease restlessness and can often enhance coordination Used to treat attention deficit hyperactivity disorder and narcolepsy Examples: Doxapram, caffeine, amphetamines, dextroamphetamines b. Emetics b. Drugs that induce vomiting. Used when consumption of a toxic substance needs to be removed Ipecac used to be used for inducing vomiting but it no longer recommended Apomorphine, Xylazine and hydrogen peroxide c. Neuroleptics c. Drug that is used to calm down a patient with a psychotic condition A tranquilizer Examples: Thorazine, Haldol, Clozaril, lithium carbonate, Loxatane Drugs and agents that are used to control bleeding and hemorrhage by creating clotting 13. Coagulants and hemostatics a. Absorbable gelatin which is made of collagen b. Collagen a. It is either in the form of a powder, foam or film These items are soaked in thrombin, epinephrine, or saline. It can be left in the body postoperatively and will be absorbed by the body in 30 days b. It is available in a number of forms but it is absorbed by the body. It must be applied dry because it will become sticky if it gets wet and will not work properly Example: Avitene which is powder, sheets and preloaded applicators c. Oxidized cellulose c. These are usually in the form of a gauze or pad It is placed on an area of bleeding and it creates a gel as it gets soaked with blood. It is kept in place until bleeding stops and then removed d. Silver Nitrate d. It is used for small areas of bleeding. Usually an applicator but could be in other forms Common Drugs used in Surgery e. Epinephrine e. Mixed with a local anesthetic and it becomes a vasoconstrictor It is absorbed rapidly by the body but provided good localized hemostasis f. Thrombin f. Topical hemostatic agent that can be poured directly on a bleeding area but is usually used in concert with other hemostatic agents such as gelfoam 14. Contrast Media a. Radiopaque dyes used to outline various anatomical structures through x-ray b. Are commonly used in biliary surgery to determine the presence of stones which appear as dark spots against the white contrast media 9 c. Are commonly used in cardiovascular and gastrointestinal surgery to identify strictures d. Syringes and containers containing contrast media on the sterile field must be labeled to prevent medication error. e. Patients must be checked for allergies to iodine prior to administration of contrast media. f. Common contrast media include: Diatrizoate sodium (Hypaque®, Renografin®, Conroy®) are used for radiography of the biliary tract, kidney, and other internal strictures. Diatrizoate meglumine (Cystografin®) is used for radiography of the urinary tract. Iohexol (Omnipaque®) is used for radiography of the female reproductive organs and for viewing body structures such as the brain, spinal cord, liver, pancreas, kidneys, aorta and blood vessels Key Term Radiopaque Impenetrable (solid) to x-rays or other forms of radiation 15. Diuretics a. Are used to prevent reabsorption of Na. and H2O by the kidneys b. Draw fluids from the tissues and into the urinary system c. In surgery, diuretics are commonly used to reduce intraocular or intracranial pressure. d. Adverse effects of use include hypokalemia. e. Diuretics commonly used in surgery include: Mannitol (Osmitrol®) is the most common osmotic diuretic used to provide a rapid reduction in intraocular pressure in patients with glaucoma and used in neurosurgery to reduce cerebral edema Furosemide (Lasix®) decrease intracranial pressure by quickly removing fluids that have accumulated because of a head trauma or an intracranial surgical procedure Hypokalemia An abnormally low concentration of K+ in the blood 16. Dyes a. Are used in surgery to mark skin incision lines and in diagnostic procedures to determine if internal structures are patent (open) b. Are applied to the skin by using a cotton-tipped applicator or by using a manufactured skin marking pen c. Common dyes include: Methylene blue Used for staining and to determine fallopian tube patency Indigo carmine 10 Can be administered IV to color urine for evidence of bladder and kidney functions; may also be used for tracking fissures, fistulas, and determining the patency of fallopian tubes Gentian violet Purple dye used frequently in surgery to mark skin incision; should NEVER be injected Lugol’s solution Used to stain cervical cancer Acetic acid (vinegar) A colored staining agent used to ID areas of cervical dysplasia 17. Emergency Drugs a. Malignant Hyperthermia Genetically transmitted disease It is more common in men than women Initial symptoms are unexplained tachycardia, increased levels of carbon dioxide, hypertension, muscle contractions, perspiration and cyanosis. A late sign is significant increase in temperature to as high as 107o to 111o Treatment of malignant hyperthermia is to stop the anesthetic that causes the situation. It is usually succinylcholine. Administration of Dantrolene and the infusion of chilled IV fluids a. Aminophylline or theophylline ethylenediamine (Aminophyllin®) 2. Cardiac arrest and respiratory arrest drugs a. A spasmolytic that is used to treat acute and chronic bronchial asthma, bronchospasms, pulmonary emphysema, Cheyne-Stokes respirations, and pulmonary edema b. Atropine sulfate (Atropine®) b. An anticholinergic drug used to treat bradycardia and bradyarrhythmia; also administered preoperatively to dry up oral secretions c. Calcium Chloride c. An electrolyte replacement given to increase the force of the myocardial contraction d. Dantrolene® d. A muscle relaxant given for the treatment of malignant hyperthermia Drugs used for Emergency Situations e. Digoxin (Lanoxin®) e. A drug that acts directly on the myocardium; used to treat congestive heart failure, atrial tachycardia, and atrial fibrillation and flutter; slows the heart rate and strengthens contractions f. Diphenhydramine hydrochloride (Benadryl®) f. A sedating antihistamine used with epinephrine to treat anaphylaxis g. Epinephrine (Adrenalin®) g. An adrenergic used as a vasoconstrictor, as a cardiac stimulant, and to relax bronchioles; used to treat anaphylactic reactions, asthmatic attacks, and local hemorrhaging; also used to prolong the action of local anesthetic agents 11 h. Lidocaine hydrochloride (Xylocaine®) h. An antiarrhythmic used to treat premature ventricular contractions (PVCs), ventricular arrhythmias, or ventricular tachycardia; also used as a local anesthetic agent i. Norepinephrine injection (Levophed®) i. An adrenergic used to restore blood pressure in acute hypotensive states j. Papaverine® j. A vasodilator drug used to dilate small vessels for surgical procedures such as AV shunts, fistulas, or femoral-popliteal bypasses k. Potassium k. An electrolyte which can cause a cardiac irritability if a deficiency is present l. Sodium bicarbonate l. An alkalinizer used to treat metabolic acidosis, especially during a cardiac arrest m. Verapamil m. A calcium blocker used to treat arrhythmias and angina Spasmolytic 18. Gastric medications Stops or prevents spasms a. H2-receptor blockers Are acid reducing medications for GERD or acid reflux Examples of medications: Pepcid, Tagament, cimetadine, Zantax 19. Hormones a. Prostaglandin (hormones produced by the pituitary gland (oxytocics) a. Are used to stimulate the uterus to contract during labor Are used in surgery to expel uterine contents (blood clots, placenta remnants) after a C-section or a therapeutic abortion Commonly used oxytocics include synthetic oxytocin Oxytocin®, Pitocin®, & Syntocinon®) and methylergonovine maleate (Methergine®) b. Sex Hormones (Hormones produced by the ovaries) b. Estrogen and progesterone are used in replacement therapy after surgical removal of ovaries Estrogen is available in a cream form which can be applied to vaginal packing placed after a vaginal hysterectomy c. Hormones produced by the pancreas c. Regulate the metabolism of glucose, a simple sugar used as an energy source Glucagon stimulates the liver to break down glycogen in glucose which then increases blood sugar levels. Insulin stimulates the liver to form glycogen from glucose which then lowers blood sugar levels. Insulin may be administered during a surgical procedure to decrease an elevated blood sugar level in a diabetic patient d. Corticosteroid medications d. Drugs in this category include cortisone, hydrocortisone and prednisone They are often utilized for the treatment of a variety of conditions, such as rashes, asthma and lupus. But corticosteroids also carry a risk of side effects. Steroid need to build up in the system and can cause side effects. 12 A person needs to be weaned off of these medications in order to prevent ill effects. Are commonly used in surgery to reduce tissue inflammation and postoperative swelling Are particularly useful in ophthalmic and orthopedic surgical procedures Can be administered orally, topically, IM or IV Common synthetic steroids include hydrocortisone (Hydrocortone®, Cortisol®, Solu-Cortef®) prednisone, methylprednisolone (Medrol®, Depo-Medrol®, Solu-medrol®)®®®®® Triacinolone acetonide (Aristocort®, Kenelog 40®, Kenacort®) dexamethasone (Decadron®), and betamethasone (Celestone®). Synthetic 20. Inhalants a. Nasal spray b. Respiratory inhalers 21. Irrigation Solutions a. Dextran Artificially prepared or made A. Decongestants used prior to nasal surgery. Neosynephrine spray Afrin Spray b. Pass to the circulatory system through the respiratory system a. – artificial plasma-volume expander. It is great in hypovolemic shock from hemorrhage b. hetastarch (Hespan) b. Plasma expander in emergency situations Not to be given to patients with severe oliguria and hypervolemia c. Dextrose in a water or saline solution c. is used for patients requiring an easily metabolized source of calories. d. Lactated Ringers Soluition d. Is a physiologic salt solution that may be used to replenish the patient’s supply of electrolytes to improve circulation, or to stimulate renal activity e. Plasmalyte® and Isolyte E® e. Are electrolyte balanced solutions which are compatible with the pH of blood. They are used to treat massive fluid and electrolyte loss f. Sodium Chloride f. Normal fluid replacement and fluid maintenance Used also for topical irrigation g. Sorbitol g. Used during GU surgery when cautery is being utilized 22. Intravenous Solutions 1. Most patients scheduled for surgery will receive an IV solution when they come to the OR 2. IV fluids are given intraoperatively to restore blood volume and replace fluids lost during the surgical procedure 3. The IV route allows the surgical team, particularly the anesthesiologist, a convenient and efficient for administering drugs and anesthesia agents as well as blood replacements and substitutes if 13 needed 4. Common IV solutions include: Normal saline is the most common (Normal saline for IV is different than irrigating normal saline because of their packaging. Irrigation should never be instilled via IV. When making heparin solutions on the field it needs to be mixed with IV saline not irrigating saline Dextrose in a water or saline solution is used for patients requiring an easily metabolized source of calories. Lactated Ringer’s solution is a physiologic salt solution that may be used to replenish the patient’s supply of electrolytes to improve circulation, or to stimulate renal activity Plasmalyte® and Isolyte E® are electrolyte balanced solutions which are compatible with the pH of blood. They are used to treat massive fluid and electrolyte loss 23. Narcotic Characteristics 1. Are primarily used to relieve pain Pre-, Intra- and Postoperatively 2. Are capable of causing dependence with regular use 3. Are classified as controlled substances by the federal government 4. Special caution is required when handling controlled substances in the OR. They must be in a locked cabinet per the Drug Enforcement Agency (DEA) 5. Adverse effects to narcotics include nausea, vomiting, resp depression, and reduced intestinal motility 6. Narcotic antagonists such as naloxone (Narcan®) should be on hand to reverse the depressant effects of narcotics if needed. 7. Common narcotics used in Surgery: Morphine sulfate Very potent, addictive narcotic that raises the pain threshold, produces sedation, and depresses respirations Meperidine hydrochloride (Demerol®) Most common synthetic narcotic used for preoperative injections and postoperative pain; used as a substitute for morphine sulfate because it does not depress respirations as morphine does Fentanyl citrate (Sublimaze®) Used as an adjunct to general anesthesia to relieve pain and produce sedation; 100 times more potent than morphine; commonly used in short surgical procedures and as a preoperative and postoperative medication because of its short duration Alfentanil (Alfenta®) – Ultra-short acting narcotic agents; has a slow onset lasting only about 10-15 minutes Sufentanil (Sufenta®) – Used to maintain a balance general anesthesia; 5-10 times more potent than fentanyl but is rapidly but is rapidly absorbed by the body to provide a rapid recovery; its effects last between 20-45 minutes Cocaine hydrochloride – Used in surgery to shrink mucous membranes and to reduce bleeding in the nose; administered topically and NEVER injected due to its high toxicity 14 24. Narcotic Antagonist A substance that counteracts the action of something else a. Romazicon a. Complete or partial reversal of sedative effects of benzodiazepines after anesthesia or conscious sedation b. Narcan b. Used for opioid narcotic overdose or narcotic depression 25. Obstetrical Agents/Oxytocics a. Oxytocin (Pitocin) b. RhoGAM 26. Ophthalmic Surgery a. Anesthetic agents a. Utilized to induce or stimulate labor Facilitates the contraction of the uterus even for spontaneous abortions b. RHo (D) immune globulin is used to prevent an immune response to Rh positive blood in people with an Rh negative blood type. a. Used locally or topically to produce the absence of all sensation. Xylocaine®, Marcaine®, Sensorcaine®, Ophthaine®, and Pontocaine® b. Antibiotics b. Used to prevent or treat infections; may be administered topically, or by an injection, but usually are administered by topical drops or ointment c. Irrigants c. Used to irrigate the anterior chamber to keep the cornea and eye tissue moist and to soak and rinse intraocular lenses Balanced salt solution (BSS), A-K Rinse®, Blinx®, and Irigate® d. Miotics d. Constrict the pupil to reduce intraocular pressure; also are used to help prevent the loss of vitreous humor in cataract surgery; are administered in a drop form Carbachol (IsoptoCarbachol®), Miostat®, and pilocarpine hydrochloride (Pilocar®, Isorocarpine®), Miostat® is unstable in solution and should not be used after sitting for 15 minutes. Therefore, it should be prepared immediately before use. e. Mydriatics/Cycloplegics e. Paralytic agents used to dilate the pupil prior to ophthamoscopy; administered by drop form Common mydriatics include atropine and phenylephrine (NeoSynephrine®); common cycloplegics include Cyclogyl® and Mydriacyl® f. Enzymes f. Proteins that act as a catalyst to speed up chemical reactions. Hyalinidase (Wydase®) and alpha-chymotrypsin (Alpha-Chymar®, Zolyse)® Paralytic The loss of sensation or movement Zonulysis Enzyme used to dissolve the suspensory ligament in order to facilitate the removal of the cataract lens 15 g. Dyes and Stains g. Visionblue® is a staining solution for cataract surgery. It is used to stain the anterior lens capsule so that the capsule is completely removed during surgery. Membraneblue allows surgeons to clearly differentiate the layers of the retina. May reduce the risk of long-term complications, such as recurrent Posterior vitreous detachment. Fluorescein eye stain This is a test that uses orange dye (fluorescein) and a blue light to detect foreign bodies in the eye. This test can also detect damage to the cornea, the outer surface of the eye. h. Lubricants h. Eye drops and ointments are used to keep the eyes lubricated and free from injury during surgery. Prevent dryness and scratching of the cornea. i. Viscoelastics i. Utilized to keep the anterior chamber from collapsing after the incision is made for cataract surgery Discovisc, Viscoat, Provisc, Duovisc, Cellugel Healon, Amvisc, Ocucoat 27. Sedative Hypnotics a. Versed midazolam hydrochloride a. Given as sedation before general anesthesia induction as well as for conscious sedation. Do not give to patients with glaucoma, shock, coma and acute alcohol intoxication b. Nebutol pentobarbital b. Sedative and hypnotic given as a preanesthetic medication for the induction of general anesthesia c. Luminol phenobarbitol c. Utilized on pediatric patients for preoperative and postoperative sedation. d. Seconal Sodium secobarbitol sodium d. Given preoperatively to provide basal hypnosis for general, spinal or regional anesthesia 28. Tranquilizers a. (Valium) diazepam a. Used to allay anxiety and tension in the patient prior to surgery, preoperative sedative b. (Inapsine) droperidol b. Used for tranquilizing effect as well as an antiemetic to control nausea and vomiting. It is also a general anesthesia enhancement medication ie. Maintenance. c. (Vistaril) hydroxyzine hydrochloride c. Reduces anxiety and tension preoperatively and helps to reduce the need for narcotics. Also has an antiemetic effect to help control nausea and vomiting d. Utilized for sedation and anxiety reduction preoperatively Alternative medications 1. Homeopathic remedies help to stimulate the body’s own defenses and are based on items from nature. They do not cause side effects d. (Ativan) Iorazepam 1. Herbal medicines 16 because they help to keep the body balanced 2. Nutritional supplements 2. A preparation that is intended to help support the person’s nutritional status. Items such as vitamins, minerals, fiber and amino acids. Care and Handling of Medications 1. It is the surgical technologist's responsibility to be aware of local, state, and federal regulations concerning drugs and their administration. 2. The role of the surgical technologist in the handling of drugs should be addressed in each institution's policy and procedure manual. Policies and procedures may vary from facility to facility so it is the surgical technologist's responsibility to become familiar with medication administration policies of their facility. 3. Only a registered nurse or physician can legally distribute medications to a surgical technologist. A verbal order from the physician for the distribution of a medication can only be taken by the nurse. 4. The surgical technologist is responsible for receiving, preparing, mixing, and labeling all drugs on the sterile back table after properly cross-referencing with the circulator. 5. The surgical technologist NEVER administers medications to patient. However, they will be involved in the preparation and handling of medication during a surgical procedure. 6. Medication should NEVER be accepted from vials that are cracked or chipped. 7. Medication should NEVER be accepted if it appears discolored or suspicious. 8. NEVER use a drug if you are in doubt about the identification of the drug. 9. Do not accept a medication from a vial or bottle you have not identified. If the medications are not clearly identified, they must be discarded and new medications obtained. 10. Immediately label all medications, both container and syringes, on the sterile back table, by using a sterile marking pen or by another acceptable method. 11. Inadequate or improper labeling on the sterile field may be considered negligent. 12. NEVER use outdated medications. The composition and effect of the drug may be altered 13. It is the responsibility of both the circulating nurse and the surgical technologist to make certain that the correct drug, correct amount, and the correct strength are administered. 14. Keep track of the amount of medication being used on the sterile field. 15. Keep track of how much irrigation solution is used within the wound so that blood loss can be determined. Procedure for Surgical Technologist to Accept Medications 1. The principle of aseptic technique must be strictly followed when delivering and receiving medication onto the sterile field. 2. Identifying medication to be used on the sterile field is both the circulator and surgical technologist's responsibility. This dual responsibility reduces the potential for medication errors. 3. Important information about the drug must be identified on the medication label such as name, strength, amount, and expiration date. 4. The circulator obtains the medication and checks the integrity of container for cracks or discolored contents. The nurse shows the bottle to the surgical technologist. 5. The circulator reads the label aloud prior to delivering the medication to the sterile field. 6. The surgical technologist recites aloud the drug's name, amount, strength, and the expiration date. 7. The circulator distributes the drug to the surgical technologist into a sterile medicine cup or basin while maintaining aseptic technique. 8. The circulator shows the medication vial to the surgical technologist again. 9. The surgical technologist immediately labels the medication with the name and strength of the drug. The circulator leaves the empty medication bottle in the room until the completion of the procedure to confirm the medication if necessary 10. Once the medication is on the sterile field, It Is the surgical technologist's responsibility to pass the correct medication in the strength specified by the surgeon. 17 11. The surgical technologist is responsible for informing the surgeon of all medication and mixtures as the drug is passed intraoperatively. The surgical technologist should state the kind and percentage of the medication as he or she is passing the medication to the surgeon. 12. It is the surgical technologist's responsibility to remember the amount of medication used on the sterile field 18