Novel Insights into the Predictors of Obstructive Sleep Apnea Syndrome in Patients with Chronic Coronary Syndrome: Development of a Predicting Model

Author:

Xu Yanan1ORCID,Ye Zongwei2,Wang Benfang3ORCID,Tang Long4,Sun Jun1,Chen Xuedong1,Yang Yi56ORCID,Wang Jun4ORCID

Affiliation:

1. Pulmonary and Critical Care Medicine, People's Hospital of Xuancheng City, Anhui, China

2. Suzhou Ninth Hospital Affiliated to Soochow University, Jiang Su, China

3. Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China

4. Department of Cardiology, People's Hospital of Xuancheng City, Anhui, China

5. Xinjiang Medical University, Urumqi 830011, China

6. Department of Cardiology Fourth Ward, The Xinjiang Medical University Affiliated Hospital of Traditional Chinese Medicine, Urumqi 830011, China

Abstract

Background. Obstructive sleep apnea syndrome (OSAS) is common in patients with chronic coronary syndrome (CCS); however, a predictive model of OSAS in patients with CCS remains rarely reported. The study aimed to construct a novel nomogram scoring system to predict OSAS comorbidity in patients with CCS. Methods. Consecutive CCS patients scheduled for sleep monitoring at our hospital from January 2019 to September 2020 were enrolled in the current study. Coronary CT angiography or coronary angiography was used for the diagnosis of CCS, and clinical characteristics of the patients were collected. Significant predictors for OSAS in patients with moderate/severe CCS were estimated via logistic regression analysis, and a clinical nomogram was constructed. A calibration plot, examining discrimination (Harrell’s concordance index) and decision curve analysis (DCA), was applied to validate the nomogram’s predictive performance. Internal validity of the predictive model was assessed using bootstrapping (1000 replications). Results. The nomograms were constructed based on available clinical variables from 527 patients which were significantly associated with moderate/severe OSAS in patients with CCS, including body mass index, impaired glucose tolerance, hypertension, diabetes mellitus, nonalcoholic fatty liver disease, and routine laboratory indices such as neutrophil to lymphocyte ratio, platelet-to-lymphocyte ratio, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol. The C-index (0.793) and AUC (0.771, 95% CI: 0.731–0.811) demonstrated a favorable discriminative ability of the nomogram. Moreover, calibration plots revealed consistency between moderate/severe OSAS predicted by the nomogram and validated by the results of sleep monitoring. Clinically, DCA showed that the nomogram had good discriminative ability to predict moderate/severe OSAS in patients with CCS. Conclusions. The risk nomogram constructed via the routinely available clinical variables in patients with CCS showed satisfying discriminative ability to predict comorbid moderate/severe OSAS, which may be useful for identification of high-risk patients with OSAS in patients with CCS.

Funder

Foundation of Xinjiang Medical University Affiliated Hospital of Traditional Chinese Medicine

Publisher

Hindawi Limited

Subject

Cell Biology,Aging,General Medicine,Biochemistry

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