Cardiac Implantable Electronic Devices

Cardiac Implantable Electronic Devices

Cardiac Implantable Electronic Devices

Cardiac Implantable Electronic Devices Cardiac Implantable Electronic Devices

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Question 1 of 3

1. Question
How would you differentiate an implantable cardiac defibrillator (ICD) from a pacemaker based on a patient’s chest x-ray?
- A pacemaker will have two leads whereas an ICD will have only one
- Pacemakers have thick coils along the leads to deliver high energy
- An ICD will have only ventricular leads but not atrial leads
- An ICD will have two thick metallic segments along the length of the lead
- ICDs are radiolucent on chest x-ray
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Question 2 of 3

2. Question
The patient is symptomatic with an ICD firing. Cardiac monitoring is attached.

Which of the following ECG rhythms would be considered as appropriate for the ICD to intervene on its own?
- Atrial flutter with a variable block
- Ventricular tachycardia
- SVT with rapid ventricular rate
- Sinus bradycardia secondary to beta-blocker overdose
- Mobitz type 1 heart block
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Question 3 of 3

3. Question
Your patient is managed and becomes haemodynamically normal. A 12-lead ECG is performed and you identify the rhythm as atrial fibrillation.

Which of the following is the most appropriate management?
- Give calcium gluconate 10% over 10 mins to stabilise the cardiac membrane
- Perform a bedside echo to check for a pericardial tamponade
- Bolus 300mg intravenous amiodarone followed by a 900mg infusion
- Apply a magnet over the ICD to stop its firing
- Arrange for an urgent ICD interrogation
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