Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.
An irregular respiratory pattern marked by alternating periods of rapid and slow respirations and by apneic periods lasting 15 sec or less. It is a commonly observed breathing pattern in neonates and infants and in some individuals having sleep apnea.
See also: breathing
the alternate inspiration and expiration of air into and out of the lungs (see also respiration).
see costal respiration.
intermittent positive-pressure breathing (IPPB)
the active inflation of the lungs during inspiration under positive pressure from a cycling valve.
repeated or recurring at intervals.
periodic acid-Schiff stain (PAS)
periodic acid followed by Schiff reagent stains polysaccharides, glycoproteins and glycolipids. It is used to demonstrate fungal elements.
inherited periodic spasticity
a defect in cattle which does not appear until they are adults. On rising from a recumbent position the hindlimbs are extended and the animal is unable to flex them. Spasticity may last for 15 minutes but the patient will eventually relax and walk normally. Causes inconvenience only. Called also stall-cramp, the stretches.
see canine cyclic hematopoiesis.
see periodic ophthalmia.
re-examination at intervals of registered veterinarians to ensure their continued educational refreshment. Adequate performance obligatory for reregistration.