Cardiac Rhythm Characteristics and Treatments

The video tutorial covers various cardiac rhythms, focusing on atrial fibrillation, supraventricular tachycardia (SVT), and ventricular tachycardia. It explains the characteristics of these rhythms, how to identify them using ECG, and their clinical implications. The tutorial also discusses treatment options for these conditions, including pharmacological and electrical therapies.

What is the key characteristic of atrial fibrillation?

• Regular rhythm with visible P waves

• Regular rhythm with no P waves

• Irregularly irregular rhythm with no discernible P waves

• Irregular rhythm with visible P waves

What is the term used when the pacemaker rate is over 100 in a wandering atrial pacemaker?

• Ventricular Tachycardia

• Multifocal Atrial Tachycardia

• Atrial Fibrillation

• Supraventricular Tachycardia

What is the main difference between atrial fibrillation and multifocal atrial tachycardia?

• AF has discernible P waves

• AF is seen more clearly in a 12-lead

• MAT involves actual atrial contraction

• MAT has a clotting issue

What is a common trigger for paroxysmal supraventricular tachycardia (PSVT)?

• Myocardial ischemia

• Caffeine

• Hypoxia

• Electrolyte imbalance

Which treatment is NOT typically used for supraventricular tachycardia?

• Lidocaine

• Beta blockers

• Adenosine

• Calcium channel blockers

What is the defining feature of monomorphic ventricular tachycardia?

• Presence of P waves

• Narrow QRS complexes

• Consistent QRS shape

• Varied QRS shapes

What is a potential cause of ventricular tachycardia?

• Increased parasympathetic tone

• Normal electrolyte balance

• Hypoxia

• Decreased sympathetic tone

What is the recommended treatment for polymorphic ventricular tachycardia?

• Slow administration of magnesium sulfate

• Rapid administration of adenosine

• Immediate defibrillation

• Beta blockers

What distinguishes polymorphic VT from monomorphic VT?

• Varied QRS shapes

• Narrow QRS complexes

• Presence of P waves

• Consistent QRS shape

What is a characteristic feature of polymorphic VT during rhythm breaks?

• Prolonged QT intervals

• Shortened QT intervals

• Narrow QRS complexes

• Regular rhythm