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Query: UMLS:C0018799 (heart disease)
 34,133 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Periodic breathing is often associated with heart disease or stroke, and commonly Cheyne-Stokes breathing has a period of about a minute. Periodic breathing also commonly occurs in healthy subjects at high altitude, and here the periods may be much shorter, of the order of 15-20 s. In this paper we study such periodic breathing using the classical model of Grodins et al. (1967, J. Appl. Physiol. 22, 260-276), together with a prescription for the dependence of ventilation on the blood CO2 concentration, modulated by the reduced oxygen pressure (the 'Oxford fan'). The model focusses on the fast dynamics of the arterial blood CO2, and differs in this respect from our previous work which emphasised the brain CO2 concentration; in this sense our model is in fact a generalization of the conceptually simpler Mackey-Glass model.
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PMID:Periodic breathing at high altitude. 1282 66

Difficulty breathing is a common presenting complaint for infants in the emergency department (ED). Periodic breathing, respiratory or systemic infection, and congenital heart disease are common diagnoses in this age group. We report the case of a male neonate presenting to the ED on multiple occasions with respiratory distress and recurrent pleural effusions of unique origin. Unlike adult pleural effusions, pediatric effusions are most commonly exudative and of infectious origin. In neonates, acquired chylothorax secondary to surgery or trauma is the most common cause of symptomatic pleural effusions. Congenital chylothorax is a rare entity that has not been presented in the emergency medicine literature. This case illustrates the extremely rare ED presentation of congenital chylothorax and outlines an approach to pediatric pleural effusions.
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PMID:Recurrent pleural effusions in a neonate. 1821 10