QuestionSBA
QuestionChoice
Sinoatrial and atrioventricular nodes do not depend on sodium channels for depolarisation. Therefore blocking sodium channels has no effect.
10024406
b
Sodium channel blockers
QuestionChoice
The irregularly irregular rhythm coupled with the lightheadedness and chest pain points to the diagnosis of atrial fibrillation. As the onset of symptoms started more than 48 hours ago, rate control is the recommended treatment option. Examples of rate control agents include beta-blockers such as bisoprolol and calcium channel blockers such as verapamil.
10024405
a
Beta-blocker
QuestionChoice
Potassium channel blockers such as amiodarone are used for rhythm control. As the onset of symptoms started more than 48 hours ago, rate control is the recommended treatment option.
10024408
d
Potassium channel blockers
QuestionChoice
This is used in patients who are haemodynamically unstable, including if they are in shock.
10024409
e
Synchronised DC cardioversion
QuestionChoice
This medication is only used in sedentary patients.
10024407
c
Digoxin
Concept
Chapter
2693
3714
Atrial fibrillation
Topic
134
Cardiology
17279
A 37-year-old female presents to the emergency department with increased episodes of lightheadedness and a few episodes of fainting. She has also experienced chest pain for 3 days now.

Her heart rate is measured as 140 beats per minute. An ECG is performed and shows an irregularly irregular rhythm with no discrete p waves. She is currently haemodynamically stable.

What should be used to treat her?
a