Will exercise-induced cardiovascular workload be monitored by Electrocardiogram (ECG) waveform morphology? The discrimination ability of ECG morphology from 30 subjects was tested for distinguishing states between exe...Will exercise-induced cardiovascular workload be monitored by Electrocardiogram (ECG) waveform morphology? The discrimination ability of ECG morphology from 30 subjects was tested for distinguishing states between exercise and relaxation in terms of side lengths, lengths of high lines, angles, perimeters and areas of triangle QRS and triangle T. As a result, 4 characters from triangle QRS had significant differences (t test, p<0.05) for over 85% of subjects in distinguishing between exercise states and relaxation states, which were: ratio of QR side length to RS side length in triangle QRS, angle S and angle Q, as well as the ratio between them. Moreover, ratio of angle S to angle Q had significant differences (t test, p<0.05) for all subjects. In conclusion, triangle characters in ECG could be used to distinguish exercise states from relaxation states.展开更多
目的探究平板运动试验(TET)与静息心电图(ECG)联合评估对冠心病的诊断价值。方法选取2020年1月至2023年1月烟台市烟台山医院纳入的100例疑似冠心病患者作为研究对象,年龄32~75(52.43±2.18)岁,体质量指数(23.55±1.87)kg/m2。...目的探究平板运动试验(TET)与静息心电图(ECG)联合评估对冠心病的诊断价值。方法选取2020年1月至2023年1月烟台市烟台山医院纳入的100例疑似冠心病患者作为研究对象,年龄32~75(52.43±2.18)岁,体质量指数(23.55±1.87)kg/m2。以冠状动脉造影(CAG)诊断结果作为“金标准”,对所有患者实施静息ECG检查和TET,比较分析静息ECG、TET及静息ECG联合TET在冠心病中的诊断效能。采用χ_(2)检验。结果静息ECG检查表明,65例阳性、35例阴性、6例误诊;TET检查表明,72例阳性、28例阴性、4例误诊;TET检查比静息ECG检查更准确,更靠近CAG诊断结果。静息ECG联合TET检查结果表明,76例阳性、24例阴性、2例误诊;静息ECG联合TET检查比TET、静息ECG单项检查更准确,与CAG诊断结果一致性较好。静息ECG联合TET检查的曲线下面积(area under the curve,AUC)为0.913,灵敏度为92.50%,特异度为90.00%,均高于静息ECG、TET单独诊断结果。结论TET与静息ECG联合对评估冠心病有着良好的诊断价值。展开更多
文摘Will exercise-induced cardiovascular workload be monitored by Electrocardiogram (ECG) waveform morphology? The discrimination ability of ECG morphology from 30 subjects was tested for distinguishing states between exercise and relaxation in terms of side lengths, lengths of high lines, angles, perimeters and areas of triangle QRS and triangle T. As a result, 4 characters from triangle QRS had significant differences (t test, p<0.05) for over 85% of subjects in distinguishing between exercise states and relaxation states, which were: ratio of QR side length to RS side length in triangle QRS, angle S and angle Q, as well as the ratio between them. Moreover, ratio of angle S to angle Q had significant differences (t test, p<0.05) for all subjects. In conclusion, triangle characters in ECG could be used to distinguish exercise states from relaxation states.
文摘目的探究平板运动试验(TET)与静息心电图(ECG)联合评估对冠心病的诊断价值。方法选取2020年1月至2023年1月烟台市烟台山医院纳入的100例疑似冠心病患者作为研究对象,年龄32~75(52.43±2.18)岁,体质量指数(23.55±1.87)kg/m2。以冠状动脉造影(CAG)诊断结果作为“金标准”,对所有患者实施静息ECG检查和TET,比较分析静息ECG、TET及静息ECG联合TET在冠心病中的诊断效能。采用χ_(2)检验。结果静息ECG检查表明,65例阳性、35例阴性、6例误诊;TET检查表明,72例阳性、28例阴性、4例误诊;TET检查比静息ECG检查更准确,更靠近CAG诊断结果。静息ECG联合TET检查结果表明,76例阳性、24例阴性、2例误诊;静息ECG联合TET检查比TET、静息ECG单项检查更准确,与CAG诊断结果一致性较好。静息ECG联合TET检查的曲线下面积(area under the curve,AUC)为0.913,灵敏度为92.50%,特异度为90.00%,均高于静息ECG、TET单独诊断结果。结论TET与静息ECG联合对评估冠心病有着良好的诊断价值。
