EKG Patterns Supraventricular Tachycardia

The video tutorial explains super ventricular tachycardia (SVT), focusing on its basic mechanism and EKG interpretation. It covers the cardiac conduction system, highlighting the roles of the SA and AV nodes. The tutorial details how SVT occurs when the AV node's gating mechanism fails, leading to increased heart rates. It also provides guidance on interpreting EKGs to identify SVT, distinguishing it from sinus tachycardia.

What is the primary focus of the video on super ventricular tachycardia?

• Patient case studies

• Treatment options

• Basic mechanism and EKG interpretation

• Detailed analysis of all subtypes

Which node is considered the pacemaker of the heart?

• Bundle of His

• SA node

• Purkinje fibers

• AV node

What is the purpose of the AV node delay?

• To prevent atrial contraction

• To allow ventricles to fill with blood

• To enhance impulse transmission

• To speed up heart rate

What happens if the AV node gating mechanism fails?

• Heart stops

• Heart rate decreases

• Heart rate increases above 150 beats per minute

• Heart rate remains normal

Which of the following is NOT a mechanism leading to super ventricular tachycardia?

• Accessory pathway

• Normal AV node function

• Extra pacemaker

• Impaired gating mechanism

What is a characteristic feature of super ventricular tachycardia on an EKG?

• Irregular QRS complexes

• Discernible P wave

• One hump between QRS complexes

• Multiple humps between QRS complexes

How can you distinguish super ventricular tachycardia from sinus tachycardia?

• Heart rate above 150 and no discernible P wave

• Discernible P wave

• Irregular heart rate

• Heart rate below 100

What is the heart rate range for normal sinus tachycardia?

• 60 to 100 beats per minute

• Above 150 beats per minute

• Below 60 beats per minute

• 100 to 150 beats per minute

What is the formula used to calculate heart rate from an EKG?

• 1500 divided by the number of large boxes

• 1500 divided by the number of small boxes

• 300 divided by the number of large boxes

• 300 divided by the number of small boxes

What is the significance of a heart rate greater than 150 beats per minute?

• Indicates normal sinus rhythm

• Indicates bradycardia

• Indicates atrial flutter

• Indicates super ventricular tachycardia