2 ms·
"Specifically, we were mapping the vulnerable period of the cardiac cycle. This interval, lasting a mere 0.035 of a second in duration, occurs with each heartbe
by User23 9y ago
"Specifically, we were mapping the vulnerable period of the cardiac cycle. This interval, lasting a mere 0.035 of a second in duration, occurs with each heartbeat. It is the only moment in the cardiac cycle when the heart is susceptible to ventricular fibrillation. Once the chaotic rhythm of ventricular fibrillation ensues, the heart stops pumping blood. Spontaneous recovery is impossible. Within a few minutes life is extinguished. Electrical current, irrespective of intensity, will not disrupt the heart’s rhythm if delivered outside the vulnerable period."
https://bernardlown.wordpress.com/2010/12/15/thumpversion-for-the-tasered/ https://bernardlown.wordpress.com/2010/12/15/thumpversion-fo...
- Gaelan 9y agoAssuming heartbeats occur about once per second, that’s a 3.5% chance of a taser shot being in the vulnerable period. That’s pretty big.
- dzhiurgis 9y agoYou can easily double or triple that during the exciting moment of a chase/arrest/crime.
- JshWright 9y ago"Thumpversion" is more commonly called a "precordial thump", and there's very little evidence to support its use. You're much better off doing chest compressions until an AED is available. There is practically no evidence supporting his "recommendation" that the police use it routinely (if it doesn't delay CPR, then sure, give 'em a punch in the chest, but the evidence behind it is _very_ shaky).