Correlation of Frontal Planar QRS-T and Tp-e/QTc Ratio with  Coronary Slow Flow Phenomenon

Meng ZHOU; Hongshan ZHANG; Kanghui GE; lin ZHANG; Xue HAN

doi:10.12259/j.issn.2095-610X.S20221030

Volume 43 Issue 10

Oct. 2022

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Meng ZHOU, Hongshan ZHANG, Kanghui GE, lin ZHANG, Xue HAN. Correlation of Frontal Planar QRS-T and Tp-e/QTc Ratio with Coronary Slow Flow Phenomenon[J]. Journal of Kunming Medical University, 2022, 43(10): 147-152. doi: 10.12259/j.issn.2095-610X.S20221030

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Meng ZHOU, Hongshan ZHANG, Kanghui GE, lin ZHANG, Xue HAN. Correlation of Frontal Planar QRS-T and Tp-e/QTc Ratio with Coronary Slow Flow Phenomenon[J]. Journal of Kunming Medical University, 2022, 43(10): 147-152. doi: 10.12259/j.issn.2095-610X.S20221030

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Correlation of Frontal Planar QRS-T and Tp-e/QTc Ratio with Coronary Slow Flow Phenomenon

doi: 10.12259/j.issn.2095-610X.S20221030

1.
Dept. of Cardiac Function，The Second Affiliated Hospital of Kunming Medical University，Kunming Yunnan 650101
2.
Dept. of Cardiology，Fuwai Cardiovascular Hospital of Yunnan Province，Kunming Yunnan 650102，China

Received Date: 2022-06-13
Available Online: 2022-10-09
Publish Date: 2022-10-31

Abstract

Abstract

Objective To investigate the relationship between electrocardiographic frontal QRS-T angle, Tp-e/QTc ratio, and coronary slow flow phenomenon （CSFP） and evaluate the predictive value of frontal QRS-T angle and Tp-e/QTc ratio. Methods Seventy-three patients with CSFP diagnosed by coronary angiography in our hospital from September 2019 to December 2021 were selected as the study group, and 67 patients with the normal coronary flow in the same period were randomly selected as the control group. The clinical data, related ECG parameters, and laboratory indexes of the two groups were compared. Multivariate Logistic regression analysis was used to analyze the risk factors affecting the risk factors of CSFP. The receiver operating characteristic （ROC） curve was drawn to explore the predictive value of frontal QRS-T angle and Tp-e/QTc ratio. Results Compared with the control group, frontal QRS-T angle, Tp-e interval, Tp-e / Qt ratio, Tp-e / QTc ratio, BMI, Cr, RBC, Hb, and HCT were higher, and the two groups were statistically different （all P < 0.05）. In the multivariate Logistic regression analysis show that BMI （OR = 1.137, P = 0.014）、Cr （OR = 1.048, P = 0.004）, frontal QRS-T angle （OR = 1.020, P = 0.003）, Tp-e/QTc （IQR） grade OR = 1.960, P < 0.001） were independent risk factors for CSFP. ROC curve analysis displayed that the diagnostic cut-off value of frontal QRS-T angle was 45.5 degree, The area under the curve was 0.706, and the sensitivity and specificity were 56.2% and 80.1%, respectively; the diagnostic cut-off value of CSFP for Tp-Te/QTc ratio was 0.22, the area under the curve was 0.68, and the sensitivity and specificity were 66% and 66%, respectively. 69%. Conclusion Frontal QRS-T angle and Tp-e/QTc ratio were associated with CSFP, which had a certain potential predictive value for the occurrence of CSFP.
- Electrocardiogram,
- Coronary slow flow phenomenon,
- Frontal QRS-T angle,
- Tp-e/QTc ratio

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References

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