Results 241 to 250 of about 634,594 (289)

Periodic breathing of premature infants

The Journal of Pediatrics, 1964
Twenty-two premature infants, classified by breathing pattern, were studied on 47occasions with measurements of end-tidal carbon dioxide tensions and arterial P CO 2 , pH, and bicarbonate. The average arterial pH of 7.444±0.015 during periodic breathing was significantly higher than the pH of 7.396±0.012 during regular breathing (p CO 2 of the ...
V, CHERNICK, F, HELDRICH, M E, AVERY
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IRREGULARITIES OF BREATHING IN THE NEWBORN PERIOD

Archives of Pediatrics & Adolescent Medicine, 1949
THE BREATHING of newborn infants has been known to be somewhat irregular in rhythm, depth and rate. Kymographic records of breathing during fussing and crying are so irregular in both premature infants and newborn, full term infants as to furnish little information. Such records during sleep, although still grossly irregular, can be analyzed.
P J, HOWARD, A R, BAUER
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Periodic Breathing With No Heart Beat

Chest, 2013
A protocol was originally designed to study breathing control during and following cardiac arrest in humans, taking advantage of the period of pulseless ventricular fibrillation (PVF) produced while testing a newly implanted cardioverter-defibrillator device.
Stephen, Bartsch, Philippe, Haouzi
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INTRINSIC MECHANISMS IN PERIODIC BREATHING

Archives of Neurology And Psychiatry, 1954
PERIODIC * breathing, as it occurs classically in Cheyne-Stokes respiration or in such variants as Biot's breathing, came to be recognized clinically almost at the same time that the early experimental studies on the course and regulation of breathing began to emerge from the physiological laboratories of the 19th century.
H E, HOFF, C G, BRECKENRIDGE
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Breath-by-breath respiratory timing and volume control during periodic breathing

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 1989
We examined the control of respiratory pattern during non-rapid-eye-movement sleep-related periodic breathing (PB) in adults, with and without hypoxia. We analyzed 186 cycles of PB from 18 epochs occurring in eight subjects; the mean (+/- SD) cycle duration was 30.8 +/- 8.4 s.
D W, Carley, C, Maayan, J, Grimes, D C, Shannon   +3 more
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Periodic Breathing in Infants: A Model Study

IEEE Transactions on Biomedical Engineering, 1987
A model has been adapted to explain periodic breathing in infants during sleep. Using parameter values determined in various studies by others, it is shown that the respiratory control system of certain infants is marginally stable so that a small change in one or more of the parameters can cause periodic breathing with a period of about 14 s.
Sherwin T. Nugent, John P. Finley
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Periodic breathing and genetics

Respiratory Physiology & Neurobiology, 2003
The episodic waxing and waning of ventilation is a fundamental event in sleep apnea syndromes. Post-hypoxic frequency decline (PHFD) and periodic breathing (PB) are evoked by brief hypoxic exposures in unanaesthetized and unrestrained inbred C57BL/6J mice, but not in A/J mice; and expression of PHFD differs not only among these mice strains but in ...
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Hypersomnia with Periodic Breathing (An Acromegalic Pickwickian)

Otolaryngology–Head and Neck Surgery, 1978
The syndromes of Pickwickian, Ondine's curse, and primary alveolar hypoventilation are respiratory disorders manifesting increased sleepiness and irregular respiratory rhythms. These disorders are currently grouped as hypersomnia with periodic breathing (HPB).
B J, Romanczuk, W P, Potsic, J P, Atkins
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Optimal ventilatory patterns in periodic breathing

Annals of Biomedical Engineering, 1993
The goal of this study was to determine whether periodic breathing (PB), which is highly prevalent during sleep at high altitudes, imposes physiological penalties on the respiratory system in the absence of any accompanying disease. Using a computer model of respiratory gas exchange, we compared the effects of a variety of PB patterns on the chemical ...
S D, Ghazanshahi, M C, Khoo
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Periodic Breathing Imitating Hyperventilation Syndrome

Chest, 1992
We report a male patient who developed an unusual periodic breathing. At presentation, the differential diagnosis at bedside between Cheyne-Stokes and primary hyperventilation syndrome was laborious, and the final verification was based on the result of capnography.
K, Liippo, H, Puolijoki, E, Tala
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