Adverse effect of smoking on cross-sectional area of small pulmonary vessel and arterial stiffness in healthy smokers without COPD.
Clin Respir J
; 13(6): 368-375, 2019 Jun.
Article
em En
| MEDLINE
| ID: mdl-30916853
ABSTRACT
INTRODUCTION:
Because it induces systemic inflammation, smoking is a risk factor of atherosclerosis and pulmonary hypertension. The brachial-ankle pulse wave velocity (baPWV) and cross-sectional area (CSA) of small pulmonary vessels can be useful markers to assess early changes of arterial stiffness and pulmonary vascular alteration in smokers.OBJECTIVES:
This study aimed to explore association between the CSA of small pulmonary vessel and arterial stiffness in healthy male smokers.METHODS:
We enrolled 90 male non-smokers and 90 male smokers (age 51.5 ± 9.7 years and 52.1 ± 7.9 years, respectively). All subjects underwent chest computed tomography (CT), pulmonary function test and baPWV measurement. We evaluated the total CSAs less than 5 mm2 using ImageJ software and divided by the total lung area (%CSA<5). We compared the association between baPWV and %CSA<5 in two groups as well as correlations among the amount of smoking, baPWV and %CSA<5. Multiple linear regression analysis using %CSA<5 as the dependent variable was also performed.RESULTS:
The mean baPWV and mean %CSA<5 were significantly different between the smokers and non-smokers. The pack-years was significantly correlated with %CSA<5 (r = -0.631, P < 0.001) and baPWV (r = 0.534, P < 0.001) in smokers. In multiple linear regression analysis, age, pack-years, FEV1 /FVC and baPWV were associated with %CSA<5, regardless of body mass index, blood pressure and heart rate.CONCLUSIONS:
There is a dose-response relationship between cigarette smoking and the CSA of small pulmonary vessels and arterial stiffness, respectively. Arterial stiffness, age, pack-years and mild airflow impairment are independent predictors of small pulmonary vascular destruction in smokers.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Veias Pulmonares
/
Fumar
/
Rigidez Vascular
Tipo de estudo:
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
Limite:
Adult
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article