Exam 1: Commit to Memory Concepts & Material Module 1 INTRODUCTION TO PHARMACOLOGY, PHARMACOLOGIC PRINCIPLES Nine Rights” and other “Rights” associated with safe medication administration. Think about the Nine Rights of Medication Administration as you are about to give medication: o Mnemonic: Nine Rights of Medication Administration - 3Ds, 4Rs, P, T (1) Right drug (2) Right dose (3) Right documentation (4) Right patient (5) Right route (6) Right time Current practice standards suggest these additional “Rights”: (7) Right reason or indication (8) Right response (9) Right to refuse Identify key enzyme inducers and enzyme inhibitors. Cytochrome P-450 enzymes (CYP, CYP450, or P-450 enzymes): liver enzymes act on substrate (original drug) to convert it to hydrophilic/polar state for elimination o Some elements (foods, smoking/alcohol, other drugs) can alter/affect the rate of the liver metabolism of drugs o Mnemonic: inHibitor: Higher levels of drug in body/cells higher risk for toxicity and increased effect of drug LIVER ENZYME (CYP) INDUCERS ↑ liver activity ↓ [drug] ↓ drug effect ↓ risk of toxicity Key CYP liver enzyme inducers o P - phenytoin (highly protein bound seizure medication) o S - smoking o P - phenobarbital o O - oxcarbazepine o R - rifampin o C - carbamazepine o S - St. John’s Wort (OTC herb) HFEI: MEMORIZE LIST – acronym: PSPORCS LIVER ENZYME (CYP) INHIBITORS ↓ liver activity ↑ [drug] ↑ drug effect ↑ risk of toxicity Key CYP liver enzyme inhibitors o P – protease inhibitor (HIV) o A – azole antifungal (fluconazole, ketoconazole) o C – cimetidine (H2RAs) o M – macrolides (ACE, azithromycin, clarithromycin, erythromycin o A – amiodarone o N – non-DHP calcium channel blockers (diltiazem, verapamil) o Grapefruit Juice HFEI: MEMORIZE LIST – acronym: PACMAN ♥s GRAPEFRUIT JUICE Identify common lab values, signs and symptoms of hepatic impairment (especially drug induced liver injury- DILI). COMMON SIGNS & SYMPTOMS OF LIVER DAMAGE Common signs and symptoms of hepatic impairment/drug induced liver injury (DILI) o Dark urine (bilirubin mixes with urine) o Jaundice (yellow eyes, liver no longer filters bilirubin from blood, or can’t conjugate it so it can’t be removed via bile) o Swelling of abdomen (no longer making sufficient albumin) o Bruising/Bleeding (lack of clotting factors) o Non-specific fatigue o Ammonia can concentrate (liver normally converts ammonia to urea) Ammonia accumulation- neurological changes including encephalopathy and confusion LIVER FUNCTION TEST (LFT) LAB VALUES Important Liver enzymes: huge in recognizing drug induced liver injuries (DILIs); know their normal ranges o Aspartate aminotransferase (AST) o Alanine aminotransferase (ALT) Elevation in enzyme(s) level suggests hepatotoxicity Usually elevated 2-3x above normal range FOR ATI/NCLEX: know common S/S; know normal and abnormal lab values including units (high or low) for liver impairment o Per ATI Med-Surg Textbook: Liver function tests: aspartate aminotransferase (AST) alanine aminotransferase (ALT) alkaline phosphatase (ALP) bilirubin albumin o Application: Know how to identify DILI from lab value respective Know how to recognize hepatotoxicity and when not appropriate to give a drug metabolized by the liver Identify common lab values, signs and symptoms of renal impairment. RANGES OF RENAL/KIDNEY FUNCTION ↑ SCr ↑ BUN means ↓ glomerular filtration by kidneys (elimination) kidney impairment ↓ CrCl and GFR means ↓ rate of filtration of blood kidney impairment ↓ rate of urine output means ↓ urine volume (elimination) kidney impairment suggestion of kidney injury: ↑ SCr (and BUN), ↓CrCl and eGFR FOR ATI/NCLEX: know common S/S; know normal and abnormal lab values (high or low) for renal impairment o Know normal ranges of kidney function and what is looked at to assess kidney function Identify common causes of Adverse Drug Events (ADEs). FOUR major drug classes that cause Adverse Drug Events: Antibiotics Anticoagulants (blood thinners) Diabetes medications Opioids Module 2 LIFESPAN CONSIDERATIONS, MEDICATION CONCEPTS/CONSIDERATIONS, SAFETY AND ERROR REDUCTION Describe the safety considerations of each pregnancy category Category A: no risk to human fetus Category B: no risk to animal fetus; human info not available Category C: adverse effect reported in animal fetus; human info not available Category D: possible fetal risk in humans Category X: human fetus abnormalities have been reported; drugs are not to be used in pregnant women B and C categories cause confusion because what may cause adverse effects in animal fetus may not be adverse for humans and vice versa o Studies in animals do not always correlate to humans either FOR ATI/NCLEX: know Categories A through X Differentiate the various categories of drug naming. GENERIC NAME (refers to active ingredient in drug) Name given by United States Adopted Names Council Active ingredient begins with lower-case letter FOR ATI/NCLEX: know GENERIC names of drugs (less so chemical names and brand/trade names) Differentiate the various categories of “scheduled” drugs. CATEGORIES OF SCHEDULED DRUGS Scheduled drugs, controlled substances, narcotics Drugs are grouped into “schedules” if they are found to have any dependency or abuse potential 5 schedules are categorized based on: o abuse (substance use disorder (SUD), misuse) potential o medical use o dependency potential Schedule 1 drugs: NO medical use FOR ATI/NCLEX: know schedules in regard to misuse potential, medical use, and dependent potential; know a few examples in each schedule List the key elements that are legally required to be found on a prescription order. SEVEN KEY ELEMENTS (1) Patient Name o need second identifier (DOB, MRN; room number is NOT allowed) (2) Date the drug order was written o Useful for outpatient world; drugs expire (3) Name of drug (4) Drug Dosage Amount (5) Drug Dosage Frequency (6) Route of Administration: oral, IV, etc. (7) Prescriber’s Signature Note: should include quantity and refills for outpatient world Module 3 INFECTIOUS DISEASE: ANTIBIOTICS KNOW ADMINSTRATION AND ADVERSE EFFECTS!! Antibiotic Beta-lactams Overview ****cross sensitivity/reaction**** if allergic to one beta-lactam group, you cannot take any other beta-lactam ASSESS FOR ALLERGIES!!!!! Hold drugs until cleared of allergy ALL beta-lactams create risk for allergic reactions Penicillins NATURAL: Penicillin G Potassium, Penicillin V Penicillinase-Resistant: Nafcillin Amino-penicillin: Ampicillin, Amoxicillin Extended Spectrum: Piperacillin Penicillin, cephalosporins, carbapenems, monobactams Penicillin: PPR3SS (Press) P – piperacillin is extended P – pseudomonas treated with piperacillin R – renal damage risk 3 – 3 take with food: penicillin V, amoxicillin, amoxicillin-clavulanic acid S – Strep and syphillis treatment S – superinfection risk Treats: Strep Syphilis Prophylaxis Piperacillin: Pseudomonas, Klebsiella Administration: TAKE THESE 3 WITH FOOD!: (1) Penicillin V, (2) Amoxicillin, and (2) Amoxicillin-Clavulanic Acid Zosyn Take all others with 8 oz of water 1 hr before or 2 hr after meals Adverse Effects: ALLERGIC REACTIONS RENAL DAMAGE (rare) Penicillin G Potassium: Hyperkalemia Seizures/CNS confusion (high doses) Supra/Superinfections DRUG-DRUG INTERACTIONS: Probenecid, Aminoglycosides, Oral Contraceptives, Warfarin Pharmacology Binds to protein of bacterial cell wall Cephalosporins Ceftriaxone Nursing Considerations: “Cef” “Ceph” suffix have many different generations (depend on type of bacteria they kill) o later generations have better CPF/BBB penetration o think “ceph” —> enceph —> in brain —> seizure/CNS confusion risks NEVER MIX WITH CALCIUM --> precipitate formation can kill “Meet my pet cat Ceph, The Great CATSBY, he has 5 lives” o o o o o o o o G – 5 generations: successively better at BBB penetration, fighting beta-lactamase, and 5th generation treats MRSA C – Calcium: do not combine with Ca2+—> precipitate A – Alcohol: no alcohol —> vomiting T – Thrombophlebitis risk via IV S – Seizures/CNS confusions (Ceph – enceph – head) B – Bleeding risk Y – Yummy: take with food or lidocaine of IM in ventrogluteal site for comfort 5 – 5 generations Treats: Wide Array of infections Administration: Take ALL with Food Make sure to fridge store oral solutions/suspensions in the FRIDGE For IV meds: Dilute, large vein, rotate sites, slow infusion, check IV for irritation For IM meds: mix Cef with lidocaine to prevent pain (in ventrogluteal site) Adverse Effects: Seizures/CNS confusion No Alcohol!: Disulfiram-like effect profuse vomiting BLEEDING RISK! (interferes with Vitamin K metabolism) THROMBOPLHEBITIS with IV Infusion Drug-Drug Interactions o Probenecid (gout med that can increase half-life) o Oral Contraceptives o Warfarin o CALCIUM and CEFTRIAXONE (precipitate) ALLERGIC REACTIONS Supra/Superinfections Pharmacology Binds to protein of bacterial cell wall Carbapenems Nursing Considerations: “-penems” “Carbapenems car crash broad spectrum (pseudomonas fighter) head injury HIGH SEIZURE/ CNS confusion RISK reduces valproic acid levels (seizure med) “Carbapenems parenteral route Treats: RESERVED FOR SERIOUS INFECTIONS Pseudomonas aeruginosa Very broad spectrum Administration: All parenteral (IV, IM, subQ) Adverse Effects: HIGH Seizure Risk!/CNS confusion (highest risk for seizures) Reduces levels of Valproate/valproic acid (seizure med) Allergic Reactions Supra/Superinfections (b/c broad spectrum) Pharmacology Binds to protein of bacterial cell wall Nursing Considerations: Monobactams Treats: RESERVED FOR SERIOUS INFECTIONS Pseudomonas aeruginosa Gram negative bacteria (harder to kill) Administration: Aztreonam (Azactam®) IV, inhaled Adverse Effects: Relatively Safe ALLERGIC REACTIONS Supra/Superinfections Drug Interactions Pharmacology Binds to protein of bacterial cell wall Beta-lactamase Inhibitors Nursing Considerations: ALWAYS combined with an antibiotic, never given alone azobactam- IV (Zosyn®- piperacillin/tazobactam) clavulanate/clavulanic acid-PO (Augmentin®amoxicillin/clavulanic acid) Others you may see: sulbactam- IV (Unasyn®- ampicillin/sulbactam) Avibactam (Avycaz-ceftazidime/avibactam) Assists: Beta-Lactams BODYGUARDS Adverse Effects: N/A Glycopeptides Vancomycin (Vancocin®) IV, PO, PR Pharmacology Bind to and inactivate the beta-lactamase inhibitor enzymes Nursing NOT antibiotics Considerations: **NARROW Therapeutics Range Drug** Vancomycin aka MC NOT RED M – MSRA fighter C – C. Diff fighter T – trough level: 10-20 mcg/mL Treats: MRSA (IV only) Clostridium difficile (C.diff) (PO only) pneumonia, meningitis, osteomyelitis, UTIs, sepsis, etc Alternative for penicillin allergy Administration: Dilute the IV infusion, rotate sites for IM, SLOW INFUSION (at least 1 hour) Adverse Effects: Nephrotoxicity Ototoxicity Histamine Flushing Syndrome (Red Man Syndrome) rashes, redness/flushing, and itching reduce rate of med (slow it down) and DILUTE further Trough levels: 10-20 mcg/mL Be careful using with other nephrotoxic and ototoxic drugs Supra/Superinfections Pharmacology Bactericidal Macrolides Azithromycin (Zithromax®/ZPack) IV, PO Erythromycin IV, PO Nursing Hearing, Kidney Function, Drug levels Considerations: Get kidney and hearing baseline “Although a MAC and a G, Big ACE has a Heart, Hear Him Out, Peni” Macrolides, GI complications, ACE drugs, Heart – QT prolongation/cardiac arrest risk, Hear – ototoxicity, Penicillin alternative Unique effect: QT prolongation (heart effect) —> Torsades —> death MACROLIDES: LIVER ENZYME INHIBITOR (PACMAN <3’s Grapefruit!) Clarithromycin Treats: Administration: Great for Penicillin Allergy Respiratory Infections (pneumonia) Chlamydia Broad spectrum Adverse Effects: Ototoxicity Cardiac Effects: QT prolongation delayed relaxation of ventricles V Tach (Torsade)/heart attack risk GI: N/V/D - (Erythromycin is used to promote GI motility) Serious Drug-Drug Interactions o Can cause other drugs to accumulate (digoxin, warfarin, seizure meds) o Other drugs like CCB, antifungals can cause build-up of Macrolides (HEART ISSUE) Supra/Super Infections- C.diff, Candida albicans Pharmacology Inhibits protein synthesis Tetracyclines Doxycycline, Minocycline, Demeclocyline Tigecycline (Tygacil®) Nursing Hearing, EKG/telemetry Considerations: End in –cycline (Tetra)Cyclines treats CALA (atypical things) Chlamydia Acne Lyme disease Anthra Tetracyclines – teeth discoloration (both start with T) Don’t take Cyclines with milk because they give you PHENGS at night! (“fangs”) – TEETH problems —> discoloration; night – do not take at night P - Photosensitivity H - Hepatotoxicity – lethargy and jaundice E - Esophageal irritation/ulceration N - Not at night/bedtime/lying down esophageal ulcers G - GI irritation/ulceration S - Superinfection risk Treats: Acne (topical and oral preparations) Lyme Disease Chlamydia Anthrax Broad spectrum Administration: Take with FULL GLASS OF WATER AVOID BEDTIME and lying down —> esophageal irritation AVOID CALCIUM! can cause ulcers Adverse Effects: Aminoglycosides Binds to calcium/dairy products – bones, teeth, drugs tooth discoloration (contraindications:AVOID CHILDREN < 8, PREGNANT PATIENTS, Breastfeeding women) Photosensitivity GI irritation Hepatotoxicity Alternative Contraception needed Supra/Superinfections Pharmacology Bacteriostatic Inhibits binding of tRNA/inhibits protein synthesis Nursing Get baseline AST, ALT lab levels Considerations: Mostly “-Cins” Gentamicin IV/IM, topical, ophthalmic NARROW THERAPEUTIC DRUG – get baseline + check peak/trough levels at correct times **Serious adverse effects: like vancomycin** Tobramycin, Neomycin (Neosporin), Amikacin AMinoglycosides: top of A – peak, bottom of M – trough “Do you want to play with AMI? NOPE!” AM – peak and trough levels N – nephrotoxicity O – ototoxicity P – pseudomonas fighter E – effectiveness decreased/inactivated in same IV with penicillin (do not mix) Treats: Pseudomonas (serious gram-negative infections) Neomycin (Neosporin) can be used topically for skin, eye, ear infections Administration: Adverse Effects: Ototoxicity - tinnitus, balance issues, hearing loss Nephrotoxicity o Careful with other ototoxic/nephrotoxic drugs DO NOT MIX WITH PENICILLIN IN SAME SYRINGE bind together reduced effectiveness Supra/Super Infections Pharmacology Bactericidal Disrupts bacteria protein synthesis Nursing CHECK LEVELS! PEAKS AND TROUGHS Considerations: Serum drug levels are monitors Sulfonamides “Sulfa” meds SulfamethoxazoleTrimethoprim (Bactrim®) IV, PO 5:1 ratio Welcome to KLUB Sulfa! K - Kernicterus: brain damage from high levels for bilirubin in baby’s blood L – lung infection treatment U – uti treatment B – blood dyscrasia; pancytopenia FOUR S’s: (1) SULFA ALLERGY + (2) SUN PHOTOSENSITY + (3) SJS + (4) STAY HYDRATED against renal crystallization ***water, water, water!*** Treats: UTI caused by E. Coli Lung Infections (PJP/PCP pneumonia of immunocompromised) Administration: STAY HYDRATED Renal crystallization potential – drink lots of water (2L) Adverse Effects: Blood Dyscrasias - PANCYTOPENIA (deficit in all major blood cell types) Kernicterus (bilirubin brain damage with jaundice) in newborns (avoid breastfeeding mothers, infants under 2 months Birth defects (avoid pregnant women) Hypersensitivity reactions o SJS o PHOTOSENSITIVITY ( REPORT RASH, FEVER! Renal crystallization Hyperkalemia —> cardiac effects AVOID IN SULFA ALLERGY Supra/Super Infections Pharmacology Bacteriostatic Inhibits bacteria from making its own folic acid Nursing Watch Blood cell counts Considerations: Fluoroquinolones Levofloxacin (Levaquin®) IV, PO Ciprofloxacin (Cipro®) IV, PO, Otic, ophthalmic “Floxacins” “Floxacins are the cure to a FUPAs!” F – floxacins U – UTI P – Pneumonia A – Anthrax “F(l)ox bites tendon”: tendon rupture/tendonitis not typically given “F(l)ox and Cat(ion) like to eat meatballs in the sun” Fox - floxacin Cat - binds to cations like calcium Eat - take with food (not containing calcium) Meat - Myasthenia Gravis exacerbation Balls - Brain – CNS and neuropathy effects Sun - photosensitivity Treats: UTI caused by E. Coli Anthrax Pneumonia Administration: Take with food Adverse Effects: ATI/NCLEX: know adverse effects Tendon rupture/tendonitis Photosensitivity Binds to Cations like Calcium, decrease absorption Supra/Superinfections (C. diff, Candida albicans) NOT Listed in ATI QT prolongation, Neuropathies, Exacerbates Myasthenia Gravis, Hypoglycemia, CNS Mental Disturbance, Aortic Aneurysm Pharmacology Inhibit bacterial DNA gyrase and topoisomerase IV Nitrofuran Nitrofurantoin (Macrobid/Macrodantin®) PO Nursing Patient should report any s/s of tendon/joint pain Considerations: or peripheral neuropathy; monitor EKG ”Nitros” “Nitrofurans cause DENTUL Pain” D - Discoloration (of teeth and urine) E – eat; take with food N – N/V/D (GI complications) T – teeth discoloration U – urine discoloration L – lower UTI treatment P – pulmonary reactions Treats: Lower UTI only (prevention and treatment) Administration: Take with food Adverse Effects: Discoloration or urine and teeth dark yellow to brown GI: N/V/D Pulmonary reactions: dyspnea, chest pain, fever, cough- BIG CONCERN- could be allergy Peripheral neuropathy Pharmacology Destroys bacterial DNA Nursing Considerations: Phenazopyridine (Pyridium®) AZO (dye) helps with UTI SYMPTOMS (not treatments) **Not an antibiotic** but analgesic Treats: UTI symptoms Administration: Take with food or after meals in GI upset Adverse Effects: Use for no more than 2 days; get real treatment Stains urine reddish/orange Pharmacology Dye functions as local anesthetic in urinary tract Nursing Intended Outcomes: soothe UTI symptoms Considerations: Unintended Outcomes: urine discoloration can stain clothes