All::Emergencies::Cardiac Arrest
Intro
What are the two categories of rhythms into which patients are divided during a cardiac arrest?
'Shockable' rhythms: VF/pulseless VT and 'non-shockable' rhythms: asystole/PEA
In ALS what is the recommended ratio of chest compressions to ventilation?
30:2
What happens with chest compressions when the defibrillator is charging?
They continue
In VF/pulseless VT, shocks are followed by how many minutes of CPR?
Single shock followed by 2 minutes of CPR
What is recommended if a cardiac arrest is witnessed in a monitored patient in a coronary care unit?
'Up to three quick successive (stacked) shocks'
What is the first-line route for drug delivery during a cardiac arrest?
IV access
If IV access cannot be achieved, what is the alternative route for drug delivery?
Intraosseous route (IO)
Is the delivery of drugs via a tracheal tube recommended during a cardiac arrest?
No, it is no longer recommended
When should adrenaline 1 mg be given for non-shockable rhythms?
As soon as possible
When should adrenaline 1 mg be given during a VF/VT cardiac arrest?
Once chest compressions have restarted after the third shock
How often should adrenaline 1 mg be repeated during ALS for VF/VT cardiac arrest?
Every 3-5 minutes
When should amiodarone 300 mg be given for VF/pulseless VT?
After 3 shocks have been administered
When should a further dose of amiodarone 150 mg be given for VF/pulseless VT?
After 5 shocks have been administered
What can be used as an alternative to amiodarone if not available?
Lidocaine
When should thrombolytic drugs be considered?
If a pulmonary embolus is suspected
How long should CPR be continued if thrombolytic drugs are given?
60-90 minutes
Is atropine recommended for routine use in asystole or PEA?
No, it is no longer recommended
What are the reversible causes of cardiac arrest?
The H's
- Hypoxia
- Hypovolaemia
- Hyperkalaemia, hypokalaemia, hypoglycaemia, hypocalcaemia, acidaemia and other metabolic disorders
- Hypothermia
The T's
- Thrombosis (coronary or pulmonary)
- Tension pneumothorax
- Tamponade – cardiac
- Toxins