Diatomaceous earth is not poisonous; it does not have to be eaten in order to be effective. Diatomaceous earth causes insects to dry out and die by absorbing the oils and fats from the cuticle of the insect's exoskeleton.
Pace, plod, trudge refer to a steady and monotonous kind of walking. Pace suggests steady, measured steps as of one completely lost in thought or impelled by some distraction: to pace up and down. Plod implies a slow, heavy, laborious, weary walk: The mailman plods his weary way.
The tast 12 beats of an atrial pacing train at a cycle length of 240 msec aredepicted. The long arrows indicate conduction of pacing stimuti to the ventricles. Beginning with ttie third pacing stimulusshown, the AV time progressively increases until the sixth stimulus blocks.urves relating the ventricular pacing cycle letigth to the VA interval on the last paced beat in patients with eachmechanism of PSVT. The atrial pacing cycle tength is shown on the X axis and the VA intervat on the last paced beat at eachcycte length on the Y axis.