Effects of chronic congestive heart failure secondary to coronary artery disease on the circadian rhythm of blood pressure and heart rate.
Am J Cardiol
; 62(10 Pt 1): 755-9, 1988 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-3421176
ABSTRACT
In 20 subjects with chronic congestive heart failure due to coronary artery disease, the 24-hour variability of ambulatory intraarterial blood pressure (BP) was studied using an improved Oxford Medilog system, and correlated with left ventricular function at rest. The mean radionuclide ejection fraction was 27% (range 10 to 42), the mean pulmonary arterial wedge pressure was 18 mm Hg (5 to 37) and the mean cardiac index was 2.8 liters/min/m2 (2 to 3.8). The 24-hour systolic BP and heart rate (HR) variability indexes were less than those of 22 normal volunteers (p less than 0.05) and were strongly correlated (p less than 0.05) with ejection fraction at rest and pulmonary arterial wedge pressure. Stepwise regression showed that a combination of the mean nocturnal HR and the standard deviation of the hourly mean systolic BP values accounted for 67% of the variability in ejection fraction between patients. Similarly, 73% of the variation in pulmonary wedge pressure was explained by combining the 24-hour mean HR and the mean nocturnal HR.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pressão Sanguínea
/
Ritmo Circadiano
/
Doença das Coronárias
/
Insuficiência Cardíaca
/
Frequência Cardíaca
Tipo de estudo:
Diagnostic_studies
Limite:
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Am J Cardiol
Ano de publicação:
1988
Tipo de documento:
Article
País de afiliação:
Reino Unido