Aleys Health Care

Master Antiarrhythmic Drug Classes with this easy to understand pharmacology lecture. Learn the Vaughan Williams Classification of antiarrhythmic drugs, including Class la, Ib, Ic, II, III, and IV. This video explains each drug class, mechanisms of action, cardiac action potential phases, sodium, potassium, calcium, and beta blocker effects, major drug examples, clinical indications, contraindications, adverse effects, monitoring parameters, and important NCLEX and pharmacology exam points. Perfect for nursing students, medical students, pharmacy students, healthcare professionals, and anyone studying cardiovascular pharmacology and cardiac arrhythmia medications.


Medical Disclaimer
This video is intended for educational purposes only and should not be used as medical advice, diagnosis, or treatment. Medication selection, dosing, and monitoring should always be performed by qualified healthcare professionals based on individual patient needs and current clinical guidelines.

Antiarrhythmic Drug Classes Explained | Class I-IV, Mechanisms & Side Effects Master Antiarrhythmic Drug Classes with this easy to understand pha...

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How to Sleep Faster Tonight Struggling to fall asleep fast? In this video, you'll learn simple ...

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How to Sleep Faster Tonight Struggling to fall asleep fast? In this video, you'll learn simple ...

Learn about Atrial Fibrillation (AFib) in this easy to understand medical lecture. This video explains what atrial fibrillation is, how it differs from atrial flutter, why AFib increases the risk of stroke, common symptoms, ECG findings, heart rate changes, paroxysmal atrial fibrillation, and the basic treatment goals of rate control and rhythm control. Perfect for nursing students, medical students, healthcare professionals, NCLEX preparation, and anyone interested in understanding heart rhythm disorders.

Atrial Fibrillation (AFib) Explained | Symptoms, Causes, ECG & Stroke Risk Learn about Atrial Fibrillation (AFib) in this easy to understand m...

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Atrial Flutter Explained Learn about Atrial Fibrillation (AFib) in this easy to understand m...

What happens if you eat oatmeal every morning? In this video, discover the science backed health benefits of eating oatmeal daily, including improved digestion, heart health support, better fullness, and steadier blood sugar levels. Learn the common oatmeal mistake many people make and how to get the most benefits from your breakfast.

How Oatmeal Helps Aid Digestion What happens if you eat oatmeal every morning? In this video, disco...

Learn QT Interval Prolongation in a simple and easy to understand medical lecture designed for nursing, medical, pharmacy, and healthcare students.
In this lesson, you'll learn what the QT interval measures on an ECG, the normal QT interval range, why QT prolongation occurs, and how delayed ventricular repolarization can lead to Early Afterdepolarizations (EADs), Torsades de Pointes, and ventricular fibrillation.
This lecture also explains the most important medications associated with QT prolongation, including macrolides, fluoroquinolones, antipsychotics, antidepressants, and antiarrhythmic drugs. You'll also learn the Vaughan Williams Classification of Antiarrhythmic Drugs, including Class I, II, III, and IV drugs, along with the difference between rhythm control and rate control.
This educational video is ideal for:
Nursing Students (RN, LPN)
Medical Students
Pharmacy Students
Physician Assistant Students
Healthcare Professionals
NCLEX Review
USMLE Review
Pharmacology Review

QT Interval Prolongation Learn QT Interval Prolongation in a simple and easy to understand m...

Myocardial Action Potential Explained - Learn the Electrical Phases of the Heart Step by Step!
In this medical education lecture, you'll learn how the myocardial action potential controls every heartbeat and how the heart's electrical system allows it to contract and relax efficiently. This lesson explains the five phases of the cardiac action potential (Phase 0 to Phase 4) in simple, easy to understand language while maintaining medical accuracy.
You'll discover how sodium (Na*), calcium (Ca'*), and potassium (K*) move across heart muscle cell membranes to generate electrical impulses that coordinate normal cardiac function. We also explain where myocardial action potentials occur, including atrial muscle cells, ventricular muscle cells, and Purkinje fibers.
This lecture also connects myocardial action potentials with ECG waveforms, helping you understand how electrical events inside the heart appear on an electrocardiogram.
In this lecture, you'll learn:
What is the myocardial action potential?
The five phases of the cardiac action potential
Phase O: Rapid depolarization
Phase 1: Early repolarization

Phase 2: Plateau phase
Phase 3: Final repolarization
Phase 4: Resting phase
Functions of sodium, calcium, and potassium ions Cardiac electrical conduction
Atrial muscle cells, ventricular muscle cells, and Purkinje fibers
ECG correlation with cardiac electrical activity
Why the plateau phase is unique to heart muscle Clinical importance of the cardiac action potential
Whether you're a medical student, nursing student, pharmacy student, paramedic, physician assistant student, or healthcare professional, this lecture provides a clear and structured explanation of one of the most important concepts in cardiovascular physiology.
If you enjoy evidence based medical education, consider subscribing to for more simplified lectures on anatomy, physiology, pharmacology, cardiology, ECG interpretation, and clinical medicine.

Learn the Electrical Phases of the Heart Step by Step! Myocardial Action Potential Explained – Learn the Electrical Phases...

Myocardial Action Potential Explained - Learn the Electrical Phases of the Heart Step by Step!
In this medical education lecture, you'll learn how the myocardial action potential controls every heartbeat and how the heart's electrical system allows it to contract and relax efficiently. This lesson explains the five phases of the cardiac action potential (Phase 0 to Phase 4) in simple, easy to understand language while maintaining medical accuracy.
You'll discover how sodium (Nat), calcium (Ca**), and potassium (K*) move across heart muscle cell membranes to generate electrical impulses that coordinate normal cardiac function. We also explain where myocardial action potentials occur, including atrial muscle cells, ventricular muscle cells, and Purkinje fibers.
This lecture also connects myocardial action potentials with ECG waveforms, helping you understand how electrical events inside the heart appear on an electrocardiogram.
In this lecture, you'll learn:
What is the myocardial action potential?
The five phases of the cardiac action potential

Phase O: Rapid depolarization
Phase 1: Early repolarization
Phase 2: Plateau phase
Phase 3: Final repolarization
Phase 4: Resting phase
Functions of sodium, calcium, and potassium ions Cardiac electrical conduction
Atrial muscle cells, ventricular muscle cells, and Purkinje fibers
ECG correlation with cardiac electrical activity
Why the plateau phase is unique to heart muscle Clinical importance of the cardiac action potential
Whether you're a medical student, nursing student, pharmacy student, paramedic, physician assistant student, or healthcare professional, this lecture provides a clear and structured explanation of one of the most important concepts in cardiovascular physiology.

Myocardial Action Potential / Phase 0: Rapid Depolarization Myocardial Action Potential Explained – Learn the Electrical Phases...

Have you ever been drifting off to sleep when suddenly your whole body jerks and wakes you up?
That strange sensation is called a hypnic jerk (or sleep start). In this video, you'll learn why it happens, what causes it, and why your brain may briefly think you're falling as you transition into sleep.
Discover how stress, caffeine, lack of sleep, and late night exercise can make hypnic jerks more likely and why they're usually nothing to worry about.
Watch until the end to learn simple tips that may help reduce them!

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Disclaimer: This video is for educational and informational purposes only and is not intended as medical advice.
Always consult a qualified healthcare professional

Your Brain Thinks You’re Falling Have you ever been drifting off to sleep when suddenly your whole b...