| Unusual respiratory response to oxygen in an infant with repetitive cyanotic episodes. | |
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MedLine Citation:
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PMID: 10852795 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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High inspired oxygen concentrations have recently been recommended to control Cheyne-Stokes respiration in adults, with the intention of averting periodic apnea and its attendant arterial desaturation. We report a case study on an infant presenting with recurrent apnea and cyanosis in which oxygen treatment led to a gross form of respiratory instability we call episodic breathing, in which a breathing phase of 60 to 90 s alternated with an apnea lasting up to 60 s. When oxygen was discontinued, a profound arterial desaturation developed before breathing recommenced and restored oxygen levels. We propose that episodic breathing is an unusual respiratory pattern that involves the central chemoreceptors and results from the ventilatory threshold (the central PCO(2) at which breathing starts) lying considerably above the apneic threshold (the central PCO(2 )at which breathing stops). This feature predisposes to lengthy periods of hyperpnea alternating with lengthy periods of apnea. We suggest that when the case infant returned to air during episodic breathing, termination of apnea was entirely dependent upon carotid body activity, which reached a sufficient level to restart breathing only when arterial desaturation was severe. We conclude that oxygen therapy involves potential risks when employed to treat respiratory disorders involving unstable breathing patterns in the infant. |
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Authors:
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P J Berger; E M Skuza; V Brodecky; S M Cranage; T M Adamson; M H Wilkinson |
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Publication Detail:
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Type: Case Reports; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: American journal of respiratory and critical care medicine Volume: 161 ISSN: 1073-449X ISO Abbreviation: Am. J. Respir. Crit. Care Med. Publication Date: 2000 Jun |
Date Detail:
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Created Date: 2000-08-01 Completed Date: 2000-08-01 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9421642 Medline TA: Am J Respir Crit Care Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 2107-11 Citation Subset: AIM; IM |
Affiliation:
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Ritchie Centre for Baby Health Research, Institute of Reproduction and Development, Monash Medical Centre, Clayton, Victoria, Australia. philip.berger@med.monash.edu.au |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Animals Carotid Body / physiopathology Chemoreceptor Cells / physiopathology Cheyne-Stokes Respiration / physiopathology Cyanosis / physiopathology* Disease Models, Animal Diseases in Twins Female Follow-Up Studies Humans Infant Infant, Newborn Oxygen / blood Oxygen Inhalation Therapy* Polysomnography Respiratory Center / physiopathology Sheep Sleep Apnea, Central / physiopathology* |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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