Pathophysiology Lecture Summary 2027 ·
Condensed High-Yield Exam Review & Core Mechanism Outlines
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Core Focus: Pathophysiology 20+ Verified Items
Structured according to 2026/2027 curriculum benchmarks. Detailed rationales, answer justifications, and key references.
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PATHOPHYSIOLOGY LECTURE SUMMARY 2027
RAPID RECALL LECTURE SUMMARY OUTLINES
Pharmacology Core Review - Autonomic Pharmacology: Adrenergic & Cholinergic Systems
Core Pathophysiology & Mechanism:
Sympathetic (fight or flight) via norepinephrine/epinephrine acting on alpha and beta receptors.
Parasympathetic (rest & digest) via acetylcholine acting on muscarinic receptors.
Hallmark Clinical Features & Signs:
- Sympathetic stimulation: Mydriasis, bronchodilation, tachycardia, renin release, glycogenolysis, urinary
retention.
- Parasympathetic stimulation (SLUDGE): Salivation, Lacrimation, Urination, Defecation, GI upset, Emesis.
First-Line Pharmacotherapy:
- Epinephrine: Non-selective alpha/beta agonist for anaphylaxis and ACLS.
- Albuterol: Selective beta-2 agonist for acute bronchospasm.
- Metoprolol: Cardioselective beta-1 blocker for CAD and heart failure.
- Atropine: Antimuscarinic agent for symptomatic sinus bradycardia.
Priority Nursing Interventions & Monitoring:
- Monitor heart rate and BP before administering beta-blockers (hold HR < 60 or SBP < 90).
- Non-selective beta blockers (propranolol) trigger life-threatening bronchospasm in asthma/COPD.
- Atropine overdose antidote: Physostigmine.
High-Yield Exam Pearls:
- ? Beta-1 = 1 Heart; Beta-2 = 2 Lungs.
- ? Anticholinergic toxidrome mnemonic: Red as a beet, dry as a bone, blind as a bat, mad as a hatter, hot as
a hare.
Clinical Nursing Review - Cardiovascular Pharmacology: Antihypertensives & Inotropes
Core Pathophysiology & Mechanism:
Blood pressure regulation governed by RAAS, sympathetic nervous system, and endothelin. Heart failure
represents impaired forward flow triggering maladaptive neurohormonal activation.
Hallmark Clinical Features & Signs:
- ACE-Inhibitor adverse effects: Dry dry cough (bradykinin buildup), hyperkalemia, angioedema (life-
threatening).
- Calcium Channel Blockers: Peripheral dependent edema, reflex tachycardia (dihydropyridines), constipation
(verapamil).
- Digoxin toxicity: Anorexia, nausea, vomiting, yellow-green visual halos, arrhythmias.
First-Line Pharmacotherapy:
- Lisinopril / Losartan: First-line for hypertension with diabetes or CKD (renal protective).
- Amlodipine: Long-acting dihydropyridine calcium channel blocker.
- Spironolactone: Aldosterone antagonist, potassium-sparing diuretic (reduces mortality in HFrEF).
- Digoxin: Cardiac glycoside, positive inotrope, negative chronotrope.
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