PHARMACOLOGY BOOTCAMP NOTES (ENGLISH)

General Test-Taking Strategies

• Do not discontinue therapy immediately; cycle down and wean when possible.
• COMPLETE the full course of prescribed therapy.
• Therapeutic effect may take weeks for many meds; monitor progress over time.
• If a psych drug is involved, monitor for suicidal ideations.
• AGE and KIDNEY FUNCTION are important considerations when selecting and dosing medications.
• ADD UP RISK FACTORS for the patient when evaluating meds and potential interactions.
• MEDICATION ADMINISTRATION considerations: know what is fast-acting, how fast to push IVP, etc.
• Distinguish between EXPECTED effects vs. COMPLICATIONs (side effects vs. actual complications).
• (4)G’s of drug interactions: Garlic, Ginger, Grapefruit, Ginkgo; plus ALCOHOL as a potential interaction source.

Pharmacology Test-Taking Concepts: Peak, Trough, and Therapeutic Window

• Trough: the lowest concentration of a drug before the next dose.
• Peak: the highest concentration after a dose.
• Therapeutic window/window of effectiveness: the range in which a drug is effective without being toxic.
• Example context mentions:
  • Lasix (furosemide) and Digoxin as drugs often discussed in the context of peak/ trough considerations.
  • Dosing ranges: smallest vs. largest dose examples (e.g., Digoxin dosing often cited as 0.125 mg to 0.25 mg, though specifics depend on patient factors).
• Note: The material emphasizes small differences in concentration can be clinically meaningful; monitoring troughs/peaks helps ensure effectiveness while avoiding toxicity.

Test-Taking Strategy: What to Assess, Monitor, Teach, and What is UNIQUE

• What to ASSESS for prior to giving the medication.
• What to MONITOR for after medication is given.
• What you NEED TO TEACH the patient about the medication.
• What is UNIQUE about this medication (special considerations, contraindications, or precautions).

Antibiotics: Quick Tips and Key Points

• Finish the entire prescribed course to prevent resistance.
• Penicillins (Cillins) and Tetracyclines (Cyclins) have specific considerations related to pregnancy and toxicity; interpret with care.
• No Alcohol with certain antibiotics; alcohol can interact or worsen side effects.
• Take Macrolides on an empty stomach with water (if advised); proper timing affects absorption.
• Tetracyclines:
  • Avoid sun exposure (photosensitivity).
  • Pregnancy and teeth development concerns: can cause teeth discoloration; generally avoided in pregnancy/young children.
  • Take with a full glass of water; remain upright for 30 minutes after taking to prevent esophagitis.
• Fluoroquinolones (Fluoroquinolones) have important cautions (drug-specific): monitor for phototoxicity and tendon risks; TB meds have related considerations in certain regimens.
• Mycins (antibiotics ending in -mycin) are commonly associated with notable toxicity; in particular aminoglycosides are highly ototoxic and nephrotoxic.
• Examples highlighted in the material include:
  • Azithromycin, Clarithromycin, Erythromycin (macrolides).
  • Penicillins (Penicillin family) and Doxycycline (a tetracycline).
• Key toxicities to remember:
  • Aminoglycosides: ototoxicity (CN VIII) and nephrotoxicity; monitor hearing and kidney function.
  • Vancomycin (a glycopeptide) can cause Red Man Syndrome with rapid IV infusion; monitor infusion rate and BP.
• TB meds and additional antibiotics have their own monitoring and interaction profiles; adhere to guidelines for each class.

Aminoglycosides and Related Toxicities

• Examples listed: Streptomycin, Gentamicin (Genta), Tobramycin, Amikacin; Vancomycin is listed alongside but is a glycopeptide (both can have nephro- and ototoxicity).
• Toxic effects to monitor:
  • Ototoxicity: assess ears/hearing and balance (CN VIII).
  • Nephrotoxicity: monitor kidney function; hydration and renal status are important.
• Practical monitoring: perform hearing tests and monitor renal function during therapy; assess for signs of tinnitus, dizziness, or decreased urine output.

Tetracyclines and Photosensitivity

• Tetracycline-class notes (e.g., doxycycline):
  • Photosensitivity: high risk for sunburn with UV exposure.
  • Teeth and bone effects: can cause tooth discoloration; generally avoided in pregnancy and in children under age 8.
  • Take with water; do not lie down immediately after taking (avoid esophagitis).
  • Avoid dairy and antacids close to dosing if not otherwise instructed; check specific product guidelines.

Red Man Syndrome with Vancomycin

• Red Man Syndrome presents with hypotension, flushing, and a diffuse rash (usually the face/neck) during rapid IV administration.
• Management:
  • Stop or slow the infusion.
  • Monitor blood pressure.
  • Re-initiate infusion slowly once symptoms are controlled.
• Contrast with anaphylactic reactions; treat as infusion-related reaction rather than true IgE-mediated allergy unless clinically indicated.

Phenytoin: Key Points

• Long-term anticonvulsant therapy; often used for epilepsy; usually continued long-term.
• Do NOT stop without consulting the prescriber.
• Expected effects may include bradycardia (low heart rate) with some dosing patterns.
• Common adverse effects and considerations:
  • Gingival hyperplasia with chronic use.
  • Numerous drug interactions; assess all concurrent medications before starting/stopping.
  • Signs of toxicity include ataxia, slurred speech, confusion, and hypersensitivity reactions (e.g., Stevens-Johnson Syndrome).
• Important patient education cues:
  • Do not stop abruptly; consult clinician for tapering.
  • Report signs of toxicity or severe skin rash promptly.

Lithium: Monitoring, Teaching, and Safety

• Lithium is highly tested for bipolar disorder; has a narrow therapeutic index.
• Therapeutic level: $0.6-1.2 ext{ mEq/L}$
• Toxicity threshold: typically consider toxicity at or above $ext{around }2.0 ext{ mEq/L}$ (exact values depend on lab references and patient factors).
• Monitoring and teaching focus:
  • Monitor: suicidal ideation, seizures, signs of toxicity, renal function, and hydration status.
  • Teach the 4 D’s of Lithium toxicity: Dehydration, Decreased renal function, Diet low in sodium, and Drug interactions (avoid NSAIDs and diuretics unless advised by clinician).
  • Toxicity signs include neurological manifestations such as ataxia, confusion, agitation, and polyuria/polydipsia.
• Dosing and practical considerations:
  • Maintain adequate hydration and consistent salt intake; abrupt hydration or salt changes can affect lithium levels.
  • Regular labs to monitor lithium level, kidney function, and thyroid function are typical parts of care.

Lithium: Therapeutic Range and Lab Values (Contextual Examples)

• Therapeutic level: $0.6-1.2 ext{ mEq/L}$
• Toxicity: $ext{often} \ge 2.0 ext{ mEq/L}$
• Renal function and dehydration can influence lithium clearance; watch for changes in urine output and weight.
• Basic lab cues sometimes discussed in teaching notes:
  • Creatinine (CR) around 0.7–1.3 mg/dL (example given: 71.3, though units and reference ranges vary by lab).
  • Urine output (UO) < 30 mL/hr may indicate reduced kidney function.
  • BUN > 20 mg/dL can imply dehydration or renal function changes.
• Action in toxicity or dehydration: increase fluids and ensure adequate sodium intake; inform the clinician of any signs of toxicity.

Psychiatric Medications: Depression, Suicide Risk, and Serotonin Syndrome

• Suicide risk is a major concern with psych meds, especially in the first 2–4 weeks of therapy; notify the physician of any suicidal thoughts or ideation.
• Antidepressants often require a slow onset and slow taper when discontinuing.
• Do not mix SSRIs with St. John’s Wort due to risk of Serotonin Syndrome.
• MAOIs have significant interaction risk with many meds and foods; require a washout period when switching to/from other antidepressants.
• General notes on SSRI/SNRI medications (examples listed): Sertraline, Citalopram, Escitalopram, Paroxetine, Fluoxetine; watch for Serotonin Syndrome signs.
• Serotonin Syndrome indicators include hyperthermia, agitation, sweating, tremors, hyperreflexia, and autonomic instability; patient education should cover this risk.

Monoamine Oxidase Inhibitors (MAOIs) and Tyramine

• MAOIs (e.g., Phenelzine, Selegiline, Isocarboxazid) require strict dietary control to avoid hypertensive crisis due to tyramine-containing foods.
• Tyramine-rich foods can precipitate hypertensive episodes; avoid OTC meds that interact; ensure patient understands food restrictions.
• “Big guns” of older antidepressants carry significant interaction and monitoring requirements.

Common Antidepressants: SSRIs and SNRIs (Examples)

• Sertraline (Zoloft), Citalopram, Escitalopram, Paroxetine, Fluoxetine (Prozac) are SSRIs/SNRIs with potential for Serotonin Syndrome if combined inappropriately.
• Taper slowly when stopping; monitor for mood changes, suicidality, sleep disturbances, and autonomic symptoms.
• Side effects can include sweating, sexual dysfunction, weight changes, and insomnia; manage per physician guidance.

Extrapyramidal Symptoms (EPS) and Neuroleptic Malignant Syndrome (NMS)

• EPS: movement disorders that require reporting to the prescriber; do not abruptly stop the antipsychotic.
• NMS: a potentially life-threatening reaction; symptoms include high fever, rigidity, altered mental status; STOP the antipsychotic and notify clinician immediately.

Antipsychotic Classifications: ABCDEFGs of Psych Meds

• A = Anticholinergic effects (dry mouth, blurred vision, urinary retention)
• B = Blurred vision and bladder retention
• C = Constipation
• D = Drowsiness
• E = EPS (tremors, parkinsonian symptoms)
• F = Photosensitivity
• G = Agranulocytosis and GI disturbance (immunosuppressed state)
• Note: interactions between MAOIs and SSRIs; caution with Tyramine-containing foods.

Levels of Key Drugs: Therapeutic Windows ( LEVELS )

• Lithium: Therapeutic $0.6-1.2 ext{ mEq/L}$; Toxicity often considered at or above $ext{around }2 ext{ mEq/L}$.
• Digoxin: Therapeutic range $1-2 ext{ ng/mL}$; Toxicity typically > $2 ext{ ng/mL}$.
• Aminophylline: Therapeutic $10-20 ext{ mcg/mL}$; Toxicity $ext{≥ 20 mcg/mL}$.
• Note: values can vary by lab; always confirm with the current institutional reference range.

Digoxin: Monitoring and Toxicity Signs

• Check the apical rate before giving, particularly in pediatric and older patients.
• Toxicity signs can include:
  • Visual disturbances (blurred vision, yellow-green halos)
  • Nausea, vomiting, anorexia, diarrhea, dizziness/lightheadedness
• Critical thresholds to monitor:
  • Bradycardia (apical rate < 60/min in adults; assess per patient baseline)
  • Potassium level considerations (hypo/hyperkalemia can influence toxicity risk)

Anticonvulsants: Phenytoin (Dilantin) and Related Toxicities

• Phenytoin is commonly used for epilepsy and often maintained long-term.
• Do not stop without clinician consultation; stopping abruptly can precipitate seizures.
• Common effects and issues:
  • Gingival hyperplasia with long-term use.
  • Multiple drug interactions requiring monitoring before adding new meds.
  • Toxicity signs include ataxia, slurred speech, confusion, rash (Steven-Johnson Syndrome).
• Management cues when toxicity or adverse effects occur:
  • Hold medication and contact the clinician if severe adverse effects or confusion occur.

Hydrocortisone & Prednisone: Steroids in Practice

• Steroids are highly tested due to wide-ranging effects.
• Assessment: monitor signs of infection, fever, and general inflammatory status.
• Monitoring: blood glucose, WBC count, vital signs.
• Teaching points:
  • Do not stop abruptly; taper as directed to prevent withdrawal and adrenal crisis.
  • Watch for signs of infection; steroids can mask infection symptoms.
  • Take with food to minimize GI upset.
  • Cataract development can be a side effect with long-term use.
• Addison’s disease management with hydrocortisone: typical dosing regimens involve multiple daily doses; monitor for stress dosing during illness or surgery.

Discharge Teaching: Sublingual Nitroglycerin (Nitro) for Stable Angina

• Assessment focus: differentiate stable vs. unstable chest pain.
• Monitoring focus: chest pain characteristics and intensity; response to nitro doses.
• Teaching points:
  • Take 1 tablet every 5 minutes for up to 3 doses if chest pain occurs; if unrelieved after 5 minutes, call emergency services (EMS).
  • Medications are photosensitive; protect from light and heat; replace the bottle every 6 months.
  • Do not exceed recommended dosing; if pain persists, seek urgent care.

Nitroglycerin: Key Practical Points

• Assessment: identify chest pain type and any accompanying symptoms.
• Monitor: document pain timeline and response to each dose.
• Teaching: 1 dose every 5 minutes, up to 3 doses; contact EMS if not relieved.
• Unique aspects: nitroglycerin tablets are sensitive to light/heat; replace every 6 months.

Acute Asthma: Albuterol and Steroid Treatments

• Albuterol (SABA) is a fast-acting bronchodilator used in acute asthma episodes; used as needed for symptom relief.
• Steroids (Glucocorticoids) are used to reduce inflammation and prevent exacerbations; common systemic steroids include prednisone and methylprednisolone.
• Inhaled steroids can cause oral candidiasis (thrush) if mouth is not rinsed after use; rinse mouth with water after inhalation.
• Glucocorticoids can raise blood glucose and suppress immune function; monitor for hyperglycemia and infection risk.
• Practical dosing and timing considerations:
  • Bronchodilators often used before inhaled steroids to improve delivery to the lungs.
  • Ensure proper technique for inhalers and spacer devices; follow spacer use instructions if applicable.

Bronchodilators: Administration and Pre-Use Considerations

• Before use: ensure patient has eaten if required by regimen; perform chest physiotherapy (CPT) as needed; use bronchodilators prior to steroid inhalation when ordered.
• Primary bronchodilator class highlighted: Albuterol (a short-acting beta-2 agonist, SABA).
• Additional notes: follow specific prescribing information regarding timing and sequence with other therapies.

Cycle/Wean-Down and Therapeutic Effect Timelines

• Psych meds and steroids (sone) require careful cycle and tapering; antibiotics require completing full course.
• Therapeutic effects for psych meds typically require 2–4 weeks, with particular emphasis on TB meds in certain contexts.
• TPN and other therapies may have nadir periods where patients can appear to “bottom out”; coordinate with the care team to adjust therapy appropriately.

Psych Meds: Practical Language Cues

• Key visual and mnemonic cues for common medications and their effects are used to help recall safety and monitoring tasks (e.g., the 4 D’s of Lithium; EPS/NMS indicators; photosensitivity).

Mood Stabilizers and Antidepressants: Quick Reference Summary

• Lithium: narrow therapeutic index; monitor suicidality, seizures, toxicity, and renal function; teach hydration, sodium balance, and signs of toxicity.
• SSRIs/SNRIs: monitor for suicidal thoughts, serotonin syndrome; avoid St. John’s Wort and certain drug interactions; taper to discontinue.
• MAOIs: dietary tyramine avoidance; potential hypertensive crisis; significant drug interactions; require washout periods when switching therapies.

Practice Questions and Exam Readiness (Representative Items)

• Example 1 (Lithium discharge education): The correct instruction emphasizes reporting excessive urination and increased thirst as important safety/monitoring points.
• Example 2 (Nitroglycerin): Correct understanding includes taking 1 tablet every 5 minutes for up to 3 doses and calling EMS if pain is not relieved; also remember to avoid heat/ light exposure for the medication container.
• Example 3 ( Addison’s Hydrocortisone): Teach to monitor for infection, maintain dosing with meals, and report fever; understand that abrupt discontinuation should be avoided and some systemic effects may occur (e.g., hyperglycemia).

Important Conceptual Connections and Real-World Relevance

• The pharmacology testing framework emphasizes four pillars for each medication: assessment before administration, monitoring after administration, patient teaching, and unique drug characteristics (e.g., narrow therapeutic index, interaction potential, and special storage/administration requirements).
• Ethical and practical implications include ensuring patient safety with high-risk meds (e.g., lithium, aminoglycosides, MAOIs, steroids) and recognizing the importance of patient education in preventing adverse events (e.g., signs of toxicity, infection risk with steroids, and serotonin syndrome risk with antidepressants).
• Real-world relevance includes managing chronic therapies (e.g., lithium for bipolar disorder, anticonvulsants like phenytoin, TB regimens) and acute interventions (nitroglycerin for angina, albuterol for asthma) in a way that minimizes toxicity and maximizes efficacy.

Quick Formulae and Numeric References (LaTeX)

• Lithium therapeutic range: $0.6 ext{ to } 1.2 \frac{ ext{mEq}}{ ext{L}}$
• Lithium toxicity threshold (contextual): typically $ext{≥ }2.0 \frac{ ext{mEq}}{ ext{L}}$
• Digoxin therapeutic level: $1 ext{ to } 2 \frac{ ext{ng}}{ ext{mL}}$
• Digoxin toxicity threshold: usually > 2 rac{ ext{ng}}{ ext{mL}}
• Aminophylline therapeutic window: $10 ext{ to }20 \frac{ ext{mcg}}{ ext{mL}}$
• Aminophylline toxicity: $ext{≥ }20 \frac{ ext{mcg}}{ ext{mL}}$

Important Reminders for Studying

• Always verify current institutional dosing guidelines and patient-specific factors (age, renal/hepatic function, comorbidities).
• Cross-check with the latest pharmacology references for updated therapeutic ranges and recommended monitoring plans.
• Practice applying these principles to realistic patient scenarios to reinforce assessment, monitoring, teaching, and unique drug considerations.

Questions or Clarifications?

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