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 ?
In addition, many OSA patients display an enhanced controller gain during sleep, which would predispose to periodic breathing (20).
In summary, perpetuation of periodic breathing and central apnea or hypopnea occurs as a result of the mutual interaction of the dynamically changing sleep/wake states and the corresponding modulations in respiratory control that occur with shifts from one state to another.
As soon as birth occurs, the normal newborn baby begins a continuous pattern of periodic breathing characterized by a succession of apneas followed by regular breathing.
A high loop gain system is present if periodic breathing develops in the setting of minimal perturbation whereas a low loop gain system remains stable despite major perturbation.
Adaptive Servo Ventilation (ASV) provides ventilatory support to rapidly treat all forms of central sleep apnea (CSA), mixed apnea and periodic breathing, commonly known as Cheyne-Stokes respiration (CSR).
In these cases periodic breathing results from an unstable negative feedback control system with a combination of high loop gain (amount of change in ventilation for a given change in partial pressure of oxygen or carbon dioxide at the chemoreceptor) and a long delay between sensing a blood gas abnormality and compensating for it by adjusting ventilation.
They hypothesized that long-term improvement in periodic breathing could, in turn, improve cardiac function.

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