EKG Interpretation and Cardiac Function

This video tutorial covers the basics of electrocardiograms (EKG), including the anatomy of the heart, the flow of blood, and the placement of EKG leads. It explains the procedure for conducting an EKG, the importance of using identifiers, and how to interpret heart rhythms. The tutorial also discusses common artifacts that can occur during EKG readings and how to address them. Additionally, it highlights the differences between heart attacks and cardiac arrests, and the significance of the ST segment in diagnosing myocardial infarctions.

What does the term 'electrocardiogram' literally mean?

• A picture of the heart

• A test for heart rate

• A recording of the electrical activity of the heart

• A measure of blood pressure

Why is it important to ask the patient for their name and date of birth rather than confirming it?

• To make the patient feel comfortable

• To verify the patient's identity accurately

• To follow hospital protocol

• To ensure the patient is paying attention

Which valve is located between the right atrium and the right ventricle?

• Aortic valve

• Pulmonic valve

• Mitral valve

• Tricuspid valve

What is the function of the SA node in the heart?

• It controls the opening and closing of heart valves

• It regulates blood pressure

• It pumps blood to the lungs

• It acts as the heart's natural pacemaker

What does the QRS complex on an EKG represent?

• Ventricular depolarization

• Atrial depolarization

• Ventricular repolarization

• Atrial repolarization

What does the ST segment indicate in an EKG?

• Potential heart attack

• Ventricular depolarization

• Atrial depolarization

• Repolarization of Purkinje fibers

Which of the following is NOT a type of lead used in EKGs?

• Bipolar

• Unipolar

• Precordial

• Multilateral

What is a common cause of a wandering baseline in an EKG?

• Electrical interference

• Patient's breathing

• Loose leads

• Patient's movement

In atrial fibrillation, what is the primary issue with the atria?

• They contract too slowly

• They quiver instead of contracting

• They contract too forcefully

• They do not contract at all

What is the purpose of a Holter monitor?

• To inject dye for imaging

• To take a single snapshot of heart activity

• To monitor heart activity over 24-48 hours

• To perform stress testing