Bradyarrhythmias

Question 1

bradyarrhythmia definition

Answer 1

Ventricular rate of <60/min. It refelects influences on or disease of the SA node, or AV block.

Question 2

Causes of bradyarrhythmia

Answer 2

• physioogical (athletes)
• drugs (B-blockers)
• pathological (hypothyroidism, hypothermia, hypoxia, raised ICP)
• occurs in 1/3 patients with hypovolaemia

Question 3

Types

Answer 3

• Sinus Bradycardia
• First-degree AV block
• Second-degree AV block
• Type I —Wenckenbach/Mobitz I
• Type II —Mobitz II
• Third-degree AV block complete block

Question 4

Treatment

Answer 4

• Atropine: The first drug of choice for symptomatic bradycardia. Dose in the Bradycardia ACLS algorithm is 0.5mcg IV push and may repeat up to a total dose of 3mg..
• Epinephrine: Can be used as an equal alternative to dopamine when atropine is not effective. Dosage is 2-10 micrograms/min
• isoprenaline 5mcg min IV

OR trancutaenous pacing

Question 5

Treatment algorithm

Answer 5

Question 6

When do you use transcutaenous pacing

Answer 6

treatment of choice for patients who are at risk of asystole