periodic breathing

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periodic breathing

periodic breathing

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).

costal breathing
see costal respiration.
intermittent positive-pressure breathing (IPPB)
the active inflation of the lungs during inspiration under positive pressure from a cycling valve.
periodic breathing
rescue breathing
artificial ventilation.


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.
periodic breathing
alternating periods of apnea and hyperventilation. See also biot's respirations, cheyne-stokes respiration.
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.
periodic movement
periodic myelodysplasia
see canine cyclic hematopoiesis.
periodic ophthalmia
see periodic ophthalmia.
periodic reassessment
re-examination at intervals of registered veterinarians to ensure their continued educational refreshment. Adequate performance obligatory for reregistration.
References in periodicals archive ?
Changes in inspiratory muscle electrical activity and upper airway resistance during periodic breathing induced by hypoxia during sleep.
Induction of periodic breathing during sleep causes upper airway obstruction in humans.
Effect of hypoxia-induced periodic breathing on upper airway obstruction during sleep.
Susceptibility to periodic breathing with assisted ventilation during sleep in normal subjects.
Periodic breathing is an abnormal oscillatory ventilation pattern consisting of cyclic hyperpnea and hypopnea, which can occur in heart failure (HF) patients during sleep or on exertion.
Corra and associates assessed the prognostic value of sleep periodic breathing and exertional periodic breathing in a prospective study of 133 patients with stable, moderate to severe HF as a result of ischemic or idiopathic dilated cardiomyopathy (Circulation 2006;113:44-50).

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