CARDIOVASCULAR SYSTEM
YEAR 2 | PAGE 22A - MECHANICS, HEMODYNAMICS + ELECTROPHYSIOLOGY
BUILD THE NORMAL HEART BEFORE THE DISEASE
Use one connected model: ANATOMY/CONDUCTION -> CARDIAC CYCLE -> PRESSURE/VOLUME -> CARDIAC OUTPUT -> BLOOD PRESSURE/FLOW -> ECG. For every perturbation, predict what happens to preload, afterload, contractility, stroke volume, cardiac output, pressure and compensatory responses before looking at answer choices.
A. DEEP CARDIOVASCULAR CONCEPT VIDEOS - DIRECT & PLAYABLE
| # | Video | Time | Why | Link |
|---|---|---|---|---|
| 1. | Cardiac Cycle - Ninja Nerd | ~24 min | Pressure, volume, valve timing, ECG events and heart sounds across one beat; use this to reconstruct Wiggers logic from memory. | |
| 2. | Cardiac Output - Ninja Nerd | ~45 min | CO = HR x SV; integrates preload, afterload, contractility, Frank-Starling, autonomic tone and venous return. | |
| 3. | Intrinsic Cardiac Conduction System - Ninja Nerd | ~48 min | SA/AV nodes, His-Purkinje conduction, nodal vs myocyte action potentials and autonomic modulation of rate/conduction. | |
| 4. | ECG Basics - Ninja Nerd Updated Lecture | ~79 min | Systematic foundation for leads, waves, intervals, axis and the physiologic meaning behind ECG deflections. | |
| 5. | Fundamentals of Blood Pressure - Ninja Nerd | ~40 min | MAP, pulse pressure, CO x TPR and Poiseuille relationships; connects vascular resistance to systemic hemodynamics. |
A. DEEP CARDIOVASCULAR CONCEPT VIDEOS - DIRECT & PLAYABLE — CARDIOVASCULAR PHYSIOLOGY CLOSED-BOOK CHECK
- Recreate the cardiac cycle/Wiggers diagram and explain every valve opening/closure, pressure crossing and heart sound.
- Predict PV-loop changes with altered preload, afterload, contractility and compliance; connect each change to stroke volume/EF.
- Explain ECG waves/intervals from conduction physiology and predict how autonomic tone or conduction disease alters them.
- Derive MAP/flow/resistance changes rather than memorizing arrows in isolation. VIDEO-FIRST | SCHOOL-EXAM + BOARD-EXAM MASTERY