Medical technology and clinical
XIA Wei, ZHANG Qiong
Objective: To explore the clinical application value of cardiac color Doppler ultrasound combined with carotid artery ultrasound in the diagnosis of coronary heart disease (CHD). Method: A total of 117 suspected CHD patients who visited Ezhou Traditional Chinese Medicine Hospital from January 2021 to June 2022 were selected for the study objects. All enrolled patients underwent cardiac color Doppler ultrasound and carotid artery ultrasound examination, and the diagnostic efficacy in CHD was compared and analyzed. Using coronary angiography as the diagnostic gold standard, patients were divided into CHD group and non CHD group. The myocardial work index (Tei index), left ventricular ejection fraction (LVEF), plaque score, and carotid intima-media thickness (IMT) were compared between the two groups. And the clinical value of Tei index, LVEF, plaque score, and IMT in diagnosing CHD was analyzed by using receiver operating characteristic (ROC) curve. Result: The diagnostic sensitivity of cardiac ultrasound combined with carotid artery ultrasound for CHD was 95.18% (79/83), specificity was 100.00% (34/34), accuracy was 96.58% (113/117), negative predictive value was 89.47% (34/38), and positive predictive value was 100.00% (79/79). Compared with the non CHD group, Tei index, plaque score, IMT in the CHD group were higher, and LVEF was lower, the differences were statistically significant (P<0.05). Compared with the single vessel group, Tei index, plaque score, IMT in the double vessel group and multi vessel group were higher, and the LVEF was lower, the differences were statistically significant (P<0.05). Compared with the dual vessel group, Tei index, plaque score, IMT in the multi vessel group were higher, and the LVEF was lower, the differences were statistically significant (P<0.05). The Receiver operating characteristic was drawn with Tei index, LVEF, plaque integral and IMT as variables. The area under the curve of Tei index, LVEF, plaque integral and IMT combined diagnosis of CHD was 0.873 (95%CI: 0.811, 0.974, P<0.001), the diagnostic sensitivity was 86.49%, and the specificity was 82.73%. Conclusion: Cardiac ultrasound combined with carotid ultrasound has high application value in the screening and diagnosis of CHD, and can be used for the evaluation of clinical CHD patients.