Development and validation of an ECG-based nomogram for early diagnosis of dilated cardiomyopathy.

IF 1.7 4区 医学 Q3 MEDICINE, RESEARCH & EXPERIMENTAL
American journal of translational research Pub Date : 2025-05-15 eCollection Date: 2025-01-01 DOI:10.62347/QPZP2392
Tongping Huang, Xiaojuan Lv, Tao Yu, Xiaojun Wang, Guidong Cai
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引用次数: 0

Abstract

Objective: To develop a nomogram based on electrocardiogram (ECG) parameters to predict the early diagnosis of dilated cardiomyopathy (DCM), enhancing diagnostic accuracy and enabling earlier clinical intervention.

Methods: A retrospective analysis was conducted on ECG data from 168 DCM patients and 130 healthy controls (N-DCM), diagnosed between October 2022 and August 2024. Lasso regression identified 11 significant ECG features (e.g., QTc interval, PR interval, QRS duration), and a nomogram model was constructed. Model performance was evaluated using ROC curves, calibration curves, decision curves, and clinical utility curves.

Results: Significant differences in ECG parameters were observed between DCM and N-DCM groups, with DCM patients showing elevated values across multiple parameters. The nomogram demonstrated high predictive accuracy, achieving an AUC of 0.928 in the training group and 0.862 in the validation group. Calibration and decision curve analyses confirmed good calibration and clinical utility.

Conclusion: The ECG-based nomogram provides an effective tool for early DCM diagnosis, with strong predictive accuracy and clinical benefits. It shows promising applicability for large-scale screenings, contributing to earlier detection and improved patient outcomes.

早期诊断扩张型心肌病的心电图图的开发和验证。
目的:建立一种基于心电图(ECG)参数的心电图图,预测扩张型心肌病(DCM)的早期诊断,提高诊断准确性,为早期临床干预提供依据。方法:回顾性分析2022年10月至2024年8月诊断的168例DCM患者和130例健康对照(N-DCM)的心电图资料。Lasso回归识别出11个显著心电图特征(如QTc间隔、PR间隔、QRS持续时间),并构建nomogram模型。采用ROC曲线、校正曲线、决策曲线和临床效用曲线评价模型的性能。结果:DCM组与N-DCM组心电图参数差异显著,DCM患者多项参数均升高。该nomogram具有较高的预测准确度,训练组和验证组的AUC分别为0.928和0.862。校准和决策曲线分析证实了良好的校准和临床应用。结论:以心电图为基础的心电图图是早期诊断DCM的有效工具,具有较强的预测准确性和临床应用价值。它显示了大规模筛查的良好适用性,有助于早期发现和改善患者预后。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
American journal of translational research
American journal of translational research ONCOLOGY-MEDICINE, RESEARCH & EXPERIMENTAL
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552
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