Wang LY, Zhu YN, Cui JJ, Yin KQ, Liu SX, Gao YH. Subclinical atherosclerosis risk markers in patients with chronic obstructive pulmonary disease: A systematic review and meta-analysis.
Respir Med 2016;
123:18-27. [PMID:
28137492 DOI:
10.1016/j.rmed.2016.12.004]
[Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIMS
Chronic obstructive pulmonary disease (COPD) is associated with increased cardiovascular morbidity and mortality. Identifying early changes of cardiovascular system before the occurrence of fatal clinical event is critical for the management of COPD. We performed a meta-analysis to investigate the associations between COPD and subclinical markers of cardiovascular risk.
METHODS
We searched PUBMED, EMBASE for studies published before Aug 1st, 2016, on the association between COPD and carotid intima-media thickness (CIMT), prevalence of carotid plaques, flow-mediated dilation (FMD), pulse-wave velocity (PWV) and augmentation index (AIx).
RESULTS
Thirty-two studies (3198 patients, 13867 controls) were included. Compared with controls, COPD patients had significantly higher CIMT (MD: 0.10 mm; 95% CI: 0.04, 0.16; p = 0.0007), PWV (SMD: 0.70; 95% CI: 0.52, 0.88; p < 0.0001), AIx (MD: 4.60%; 95% CI: 0.52, 8.68; p = 0.03), AIx@75 (AIx normalized to a heart rate of 75 beats per minute) (MD: 4.59%; 95% CI: 2.80, 6.38; p < 0.0001), prevalence of carotid plaque (OR: 2.54; 95% CI: 2.04, 3.15; p < 0.0001), and significantly lower FMD (MD: -4.21%; 95% CI: -6.71, -1.71; p = 0.001). Sensitivity and subgroups analyses substantially confirmed our results. Meta-regression analysis revealed that spirometry (as expressed by FEV1%predicted) might influence on PWV.
CONCLUSIONS
These findings indicate that COPD, even in mild to moderate patients, had greater impaired markers of subclinical atherosclerosis and cardiovascular risk. However, further studies are still needed to address confounders, such as age, smoking, hypertension, diabetes etc, which might affect the associations in COPD patients.
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