Cardiac Rhythm Management Concepts

Christine LaGrasta presents a module on supraventricular arrhythmias, focusing on rhythms originating in the sinus node and atrium. The video covers normal sinus rhythm, sinus tachycardia, and sinus bradycardia, discussing their characteristics, causes, and treatments. It also explores atrial arrhythmias like premature atrial contraction, atrial flutter, and supraventricular tachycardia, detailing their causes and management strategies. The module emphasizes the importance of understanding age-related heart rate variations in pediatric patients and provides guidelines for treating arrhythmias, including medication dosages and procedures like synchronized cardioversion.

What is a characteristic feature of all sinus rhythms?

• Irregular PR interval

• Absence of P wave

• P wave preceding each QRS complex

• Inverted P wave in lead II

Which of the following is NOT a cause of sinus tachycardia?

• Fever

• Hypothermia

• Anxiety

• Dehydration

What is the primary treatment approach for sinus bradycardia?

• Performing surgery

• Treating the underlying cause

• Administering pain medication

• Using ice packs

According to the PALS guidelines, what is the maximum dose of Atropine for a child?

• 0.5 milligrams

• 2.0 milligrams

• 1.0 milligram

• 1.5 milligrams

What is a common cause of premature atrial contraction?

• Digitalis toxicity

• Hypothermia

• Congestive heart failure

• Myocarditis

In atrial flutter, what is the typical atrial rate?

• 400 beats per minute

• 300 beats per minute

• 200 beats per minute

• 100 beats per minute

What is a characteristic of supraventricular tachycardia?

• Abrupt start and stop of rhythm

• Visible P waves

• Slow heart rate

• Wide QRS complexes

Which maneuver can be used to convert supraventricular tachycardia to sinus rhythm?

• Performing CPR

• Administering digitalis

• Using a defibrillator

• Applying ice to the face

What is the initial dose of Adenosine for treating supraventricular tachycardia?

• 0.2 milligram per kilo

• 0.15 milligram per kilo

• 0.1 milligram per kilo

• 0.05 milligram per kilo

What is the maximum dose of Adenosine for a child?

• 10 milligrams

• 12 milligrams

• 8 milligrams

• 6 milligrams