Device/Lead extraction Flashcards Preview

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Flashcards in Device/Lead extraction Deck (21):
1

5 reasons for lead extraction

Infection
Malfunction
Thrombosis / Venous Stenosis
Lead Interaction
Requirement for MRI

2

Name two leads on recall

Sprint fidelis // Riata

3

List class I removal for infection

Endocarditis or sepsis
Pocket abscess, device erosion, skin adherence
Occult gram-positive bacteremia

4

Removal for chronic pain at device site is which class

IIA

5

List class I indications for thrombosis / stenosis

Thrombus on lead or fragment
Subclavian or SVC occlusion
Stent deployment to vein with lead

6

Class I indications for functional leads

Life threatening arrhythmias caused by leads
Immediate threat if leads left in place (fracture and protrusion)
Leads interfere with other leads

7

Class I non functional leads

Life threatening arrhythmias caused by leads
Immediate threat if leads left in place (fracture and protrusion)
Leads interfere with other leads

8

What is erosion almost always caused by and whats the cure

Indolent infection

requires extraction

9

Name two predisposing factors to infection

Diabetes mellitus

Post operative haematoma

10

What is the most common cause of acute infection

Staphylococcus Aureus

Pussy and manifest within first few weeks

11

What is the most common cause of chronic infection

Staphylococcus Epidermis

Months or years after infection

12

What percentage of acute infections complicate new implants

33-50%

13

What should be assumed with bacteraemia without localising signs

Endocarditis

14

Does lead endocarditis occur before or after pocket infection

Normally later than pocket infection

15

Is endocarditis normally introduced at implant or secondary to transient bacteraemia

Secondary to transient bacteraemia of unidentified source

16

How to diagnose lead endocarditis

Vegetation on lead via ECHO in presence of other signs of infection

17

Occult gram positive bacteraemia is which indication class for removal

Class I

18

Occult gram negative bacteraemia is which indication class for removal

Class IIa

19

How long should one wait to confirm negative infection status following gen removal and antibiotics

3 to 10 days

20

When is prophylactic antibiotic concentration highest in tissue

30-60mins prior

21

Is there data to support giving antibiotics for more than 24hrs after implantation

No