目的探讨胸导联R波递增不良的临床意义。
Objective To estimate clinical significance of poor R wave progression in precordial leads.
用肢导联或单用胸导联的心电图可致特异性更低。
Use of limb lead or single lead thoracic placement electrocardiograms resulted in some loss of specificity.
目的探讨正常人右胸导联心电图男女T波形态差异规律及临床意义。
Objective To explore difference of t wave shape in right precordial lead electrocardiogram between normal male and female and its clinical value.
结论正常人右胸导联心电图T波形态男女差异显著，应引起临床注意。
Conclusion There is a significant difference in t wave shape in right precordial lead electrocardiogram between normal males and females. It should be noticed in clinically.
结果：头胸导联所记录到的Q波数及Q波幅度均显著低于常规导联心电图。
Results: Q wave amplitude and Q wave numbers recorded in Head-Chest leads were lower than those recorded by Routine lead ECG.
最后，对头胸导联的主要理论观点提出了不同的意见，并提出了作者关于建立新导联的原则。
Lastly, the author proposed negative opinions to the main theoretical views of he lead and put forward the principles founding the new leads.
结论40岁以上右胸导联R波占优势者，大多数有心血管系统的疾病，只有少数为正常变异。
Conclusions Except some normal variation, most patients over 40 years old with right chest conduct link R-wave advantage in electrocardiogram were demonstroted disorders in cardiovascular system.
目的观察在窄qrs波心动过速鉴别诊断时，头胸导联心电图是否优于常规12导联心电图。
Objective To observe whether the head-chest leads electrocardiogram (HCECG) is better than the routine 12-leads electrocardiogram (RLECG) in different diagnosis of narrow QRS complex tachycardias.
目的用ST段体表等电势图（BSPM）的方法解释急性下壁心梗伴有胸导联ST段下移的心电现象。
Objective: To explain the physiologic electric phenomena of acute inferior myocardial infarction accompanied with ST depression in precordial leads with body surface potential mapping (BSPM).
结论急性下壁心肌梗死伴胸导联ST段改变者提示多支病变，伴胸导联ST段压低者多提示合并正后壁心肌梗死。
Conclusion Patients in precordial ST segment depression with acute inferior myocardial infarction were more multi _ vessel lesions and more acute posterior myocardial infarction.
伴胸导联ST段改变者严重室性心律失常与房室传导阻滞的发生率均较不伴胸导联ST段改变者高（P<0.05）。
Percent of occurring serious ventricular arrhythmia and auricular-ventricular block in patients with chest lead ST segment descent was large significantly (P<0.05).
结论胸导联心电图r - ST - T变化是诊断AHCM的敏感、特异的预测指标，心电图对AHCM的诊断具有早期预测意义。
Conclusion The changes on R-ST-T in chest leads is a sensitive and specific predictive marker for diagnosing AHCM, ECG can predicted AHCM early.
结论胸导联心电图r - ST - T变化是诊断AHCM的敏感、特异的预测指标，心电图对AHCM的诊断具有早期预测意义。
Conclusion The changes on R-ST-T in chest leads is a sensitive and specific predictive marker for diagnosing AHCM, ECG can predicted AHCM early.
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