He was in the asphyxial stage, all animation suspended, no beat of pulse, apparently dead.
The second stage is termed the stage of collapse or the algide or asphyxial stage.
1706, "stoppage of pulse," from Modern Latin, from Greek asphyxia "stopping of the pulse," from a- "not" (see a- (3)) + sphyzein "to throb." The current sense of "suffocation" is from 1778, but it is a "curious infelicity of etymology" [OED] because victims of suffocation have a pulse for some time after breathing has stopped.
asphyxia as·phyx·i·a (ās-fĭk'sē-ə)
A condition in which an extreme decrease in the amount of oxygen in the body accompanied by an increase of carbon dioxide leads to loss of consciousness or death.