,1. Why Pharmacology Matters in Nursing
2. Understanding Drug Classes & Mechanisms
3. Nursing Considerations & Safety Principles
1. Basic Math Refresher for Nurses
2. Units, Conversions & Abbreviations
3. Formula Method, Ratio-Proportion, Dimensional Analysis
4. IV Flow Rates, Drip Rates, Pediatric Calculations
5. Practice Problems + Solutions
1. Cardiovascular Medications
2. Respiratory Medications
3. Pain & Analgesics
4. Antibiotics & Antivirals
5. Endocrine Medications
6. GI Medications
7. Neurological & Psychiatric Medications
8. Chemotherapy & Immunotherapy
9. Emergency & Critical Care Drugs
10. Abbreviations & Units Cheat Sheet
11. High-Yield Conversion Tables
12. Common Side Effects & Nursing Alerts
,1. Why Pharmacology Matters in Nursing
Pharmacology is the study of drugs, their actions on the body, and how the body responds to them. For
nurses, understanding pharmacology is critical because:
1. Patient Safety: Medication errors are among the most common causes of adverse events in
healthcare. Knowing drug mechanisms, dosages, and side effects prevents harm.
2. Clinical Decision-Making: Nurses must anticipate patient responses, recognize adverse effects,
and implement interventions quickly.
3. Exam Success: NCLEX, HESI, and other exams heavily focus on medication knowledge and
safe dosage calculations.
Example: A nurse administering digoxin without understanding its narrow therapeutic range may miss
early signs of toxicity (nausea, bradycardia, visual disturbances). Awareness prevents serious
complications.
Clinical Tip: Always ask, ―What is the purpose of this drug? What am I monitoring? What is the
patient’s response?‖
2. Key Principles of Pharmacology
2.1. Pharmacokinetics – What the Body Does to the Drug
Pharmacokinetics involves absorption, distribution, metabolism, and excretion (ADME):
1. Absorption: How the drug enters the bloodstream.
o Oral drugs: Absorbed via GI tract → liver (first-pass effect) → systemic circulation.
o IV drugs: 100% bioavailability; fastest onset.
2. Distribution: How the drug spreads through body tissues.
o Highly protein-bound drugs (e.g., warfarin) compete for binding sites; low albumin
increases free drug.
3. Metabolism: Chemical modification of drugs, mostly in the liver.
o Drugs may be activated or inactivated; liver disease affects metabolism.
4. Excretion: Removal of drugs, mainly via kidneys.
o Renal impairment requires dosage adjustment.
, Clinical Tip: Monitor kidney and liver function before giving medications with narrow therapeutic
ranges.
2.2. Pharmacodynamics – What the Drug Does to the Body
Pharmacodynamics refers to the mechanism of action, therapeutic effects, and side effects of a drug:
2. Understanding Drug Classes & Mechanisms
3. Nursing Considerations & Safety Principles
1. Basic Math Refresher for Nurses
2. Units, Conversions & Abbreviations
3. Formula Method, Ratio-Proportion, Dimensional Analysis
4. IV Flow Rates, Drip Rates, Pediatric Calculations
5. Practice Problems + Solutions
1. Cardiovascular Medications
2. Respiratory Medications
3. Pain & Analgesics
4. Antibiotics & Antivirals
5. Endocrine Medications
6. GI Medications
7. Neurological & Psychiatric Medications
8. Chemotherapy & Immunotherapy
9. Emergency & Critical Care Drugs
10. Abbreviations & Units Cheat Sheet
11. High-Yield Conversion Tables
12. Common Side Effects & Nursing Alerts
,1. Why Pharmacology Matters in Nursing
Pharmacology is the study of drugs, their actions on the body, and how the body responds to them. For
nurses, understanding pharmacology is critical because:
1. Patient Safety: Medication errors are among the most common causes of adverse events in
healthcare. Knowing drug mechanisms, dosages, and side effects prevents harm.
2. Clinical Decision-Making: Nurses must anticipate patient responses, recognize adverse effects,
and implement interventions quickly.
3. Exam Success: NCLEX, HESI, and other exams heavily focus on medication knowledge and
safe dosage calculations.
Example: A nurse administering digoxin without understanding its narrow therapeutic range may miss
early signs of toxicity (nausea, bradycardia, visual disturbances). Awareness prevents serious
complications.
Clinical Tip: Always ask, ―What is the purpose of this drug? What am I monitoring? What is the
patient’s response?‖
2. Key Principles of Pharmacology
2.1. Pharmacokinetics – What the Body Does to the Drug
Pharmacokinetics involves absorption, distribution, metabolism, and excretion (ADME):
1. Absorption: How the drug enters the bloodstream.
o Oral drugs: Absorbed via GI tract → liver (first-pass effect) → systemic circulation.
o IV drugs: 100% bioavailability; fastest onset.
2. Distribution: How the drug spreads through body tissues.
o Highly protein-bound drugs (e.g., warfarin) compete for binding sites; low albumin
increases free drug.
3. Metabolism: Chemical modification of drugs, mostly in the liver.
o Drugs may be activated or inactivated; liver disease affects metabolism.
4. Excretion: Removal of drugs, mainly via kidneys.
o Renal impairment requires dosage adjustment.
, Clinical Tip: Monitor kidney and liver function before giving medications with narrow therapeutic
ranges.
2.2. Pharmacodynamics – What the Drug Does to the Body
Pharmacodynamics refers to the mechanism of action, therapeutic effects, and side effects of a drug:
