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.
It is accomplished by delivering pulses of electric current through the patient's chest, which stimulates the heart to contract. The most common indication for transcutaneous pacing is an abnormally slow heart rate. By convention, a heart rate of less than 60 beats per minute in the adult patient is called bradycardia. Not all instances of bradycardia require medical treatment.