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Tuberculosis & Respiratory Diseases

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Vol.74 No.2
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Relation of Pulmonary Function Impairment and Coronary Artery Calcification by Multi-detector Computed Tomography in Group Exposed to Inorganic Dusts

Tuberculosis & Respiratory Diseases / Tuberculosis & Respiratory Diseases,
2013, v.74 no.2, pp.56-62
(Occupational Lung Diseases Institute)

So Young Park (Occupational Lung Diseases Institute)
& So, Y. P. (2013). Relation of Pulmonary Function Impairment and Coronary Artery Calcification by Multi-detector Computed Tomography in Group Exposed to Inorganic Dusts. Tuberculosis & Respiratory Diseases, 74(2), 56-62.
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Abstract

Background: The purpose of this study was to evaluate the relationship of pulmonary function impairment (PFI) and coronary artery calcification (CAC) by multi-detector computed tomography (MDCT), and the effect of pneumoconiosis on CAC or PFI. Methods: Seventy-six subjects exposed to inorganic dusts underwent coronary artery calcium scoring by MDCT, spirometry, laboratory tests, and a standardized questionnaire. CAC was quantified using a commercial software (Rapidia ver. 2.8), and all the subjects were divided into two categories according to total calcium scores (TCSs), either the non-calcified (＜1) or the calcified (≥1) group. Obstructive pulmonary function impairment (OPFI) was defined as forced expiratory volume in one second/forced vital capacity (FEV1/FVC, %)＜70, and as FEV1/FVC (%)≥70 and FVC＜80 for restrictive pulmonary function impairment (RPFI) by spirometry. All subjects were classified as either the case (profusion≥1/0) or the control (profusion≤0/1) group by pneumoconiosis findings on simple digital radiograph. Results: Of the 76 subjects, 35 subjects (46.1%) had a CAC. Age and hypertension were different significantly between the non-calcified and the calcified group (p＜0.05). Subjects with pneumoconiosis were more frequent in the calcified group than those in the non-calcified group (p=0.099). FEV1/FVC (%) was significantly correlated with TCSs (r=−0.316, p=0.005). Subjects with OPFI tended to increase significantly with increasing of TCS (4.82, p=0.028), but not significantly in RPFI (2.18, p=0.140). Subjects with OPFI were significantly increased in the case group compared to those in the control group. Conclusion: CAC is significantly correlated with OPFI, and CAC and OPFI may be affected by pneumoconiosis findings.

keywords
Coronary Vessels, Vascular Calcification, Spirometry, Pneumoconiosis, Pulmonary Function Tests

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