preejection

Etymology

Definitions

1. 1

   Occurring prior to ejection.

   • The severity of damage to the aircraft in combat was responsible for more preejection injuries, unconsciousness, and allowed less time to prepare for ejection.
   • The preejection shortening and relengthening correspond to septal beaking and flash.
2. 2

   The time period immediately preceding ejection.

   • We have therefore used the R-S₂ interval assuming that any prolongation that may occur is most likely a result of lengthening of R-S₁ (including preejection) rather than S₁-S₂ .
   • During systole, two main phases occur: preejection and ejection.
   • This is seen as abnormal rapid leftward motion of the septum during preejection followed by rightward (paradoxical) motion.

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