Arrest · Critical
Ventricular Fibrillation
● Live · lead II25 mm/s · 10 mm/mV
II
10-second rhythm strip · count the boxes
RateNot measurable
RegularityChaotic
P wavesAbsent
PR intervalNone
QRSNo discernible QRS; coarse or fine fibrillatory waves
Key features
- Chaotic undulations of varying amplitude
- No organized complexes
- Check leads: artifact can mimic VF in a talking patient