Transmural pressure measurements. Importance in the assessment of pulmonary hypertension in obstructive sleep apneas.
Chest
; 95(2): 338-42, 1989 Feb.
Article
em En
| MEDLINE
| ID: mdl-2914485
ABSTRACT
Seven patients with OSAS were studied during nocturnal sleep in order to assess the trend of PAP throughout apneas and to identify factors possibly associated with such a trend. All patients underwent a polysomnography including the monitoring of PAP and esophageal pressure. While intravascular PAP decreased during apneas and increased at the resumption of breathing, transmural PAP values (ie, corrected for intrathoracic pressure swings) showed a trend toward a progressive increase throughout apneas and toward a decrease once ventilation had been resumed. The measurement of transmural values allowed a reliable assessment of PAP changes occurring during apneas, and different degrees of such changes shown by different patients may be related to a host of factors relevant to wakefulness and sleep, including individual responsivity to hypoxic stimulus.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Artéria Pulmonar
/
Síndromes da Apneia do Sono
/
Pressão Sanguínea
/
Hipertensão Pulmonar
Tipo de estudo:
Etiology_studies
/
Prognostic_studies
Limite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
1989
Tipo de documento:
Article