Defibrillation

Question 1

How long does cerebral hypoxic injury take?

Answer 1

3 min

Question 2

For every minute between collapse and early defibrillation, by what percentage does mortality increase?

Answer 2

7-10%

Question 3

What pause in CPR should occur before defib?

Answer 3

As little as possible, less than 5 seconds

Question 4

In a very hairy person, what pad position may be useful

Answer 4

Bi-axilla

Question 5

After succesful shock, how long may it take to get ROSC?

Answer 5

2 min

Question 6

When is stacked shocks appropriate?

Answer 6

In monitored area, pre-oxgenated, initial rhythm is VF/pVT. First shock must deliverable in 20 seconds.

Question 7

If converting atrial / ventricular tachyarrhymias, what are you syncing on?

Answer 7

R wave

Question 8

If synchronisation fails, then do what?

If a person with VT is unstable, what can you do?

Answer 8

Change lead, increase amplitude

If in unstable VT and can’t get sync, the unsynchronised shock is possible?

Question 9

In people with S-ICD’s or pacers in left lateral position, what pad position should you use?

Answer 9

AP

Question 10

If an ICD has not delivered a shock or failed to terminate the arrhytmia, what should you do with the external defib?

Answer 10

Externally shock the patient