CAJ | 학술논문

目的观察心房复极波增大诱发异位心房激动的临床和心电图特征.方法对7例心房复极波间歇性增大致PR段及ST段同步下移并诱发房性早搏及心房扑动的临床表现和常规心电图特征进行分析.结果出现这一心电现象的导联广泛,以V_3、V_4导联显著,房性早搏及心房扑动的配对间期短且固定,而配对间期较长的房性早搏则无PR段及ST段下移.患者存在心脑肺结构破坏及功能损害或低钾血症,病情好转时上述现象减轻或消失.结论在病理条件下心房复极波增大致心房复极离散度增大,提示心电活动不稳定,易于诱发折返性异位心房激动.
목적 관찰심방복겁파증대유발이위심방격동적림상화심전도특정.방법 대7례심방복겁파간헐성증대치PR단급ST단동보하이병유발방성조박급심방복동적림상표현화상규심전도특정진행분석.결과 출현저일심전현상적도련엄범,이V_3、V_4도련현저,방성조박급심방복동적배대간기단차고정,이배대간기교장적방성조박칙무PR단급ST단하이.환자존재심뇌폐결구파배급공능손해혹저갑혈증,병정호전시상술현상감경혹소실.결론 재병리조건하심방복겁파증대치심방복겁리산도증대,제시심전활동불은정,역우유발절반성이위심방격동.
Objective To observe the feature of clinical and electrocardiogram(ECG) in ectopic atrial impulse which is caused by exaggerated atrial repolarization. Methods Clinical appearance and the ECG fea-ture of download P-R segment and ST segment caused by exaggerated atrial repolarization wave and leading pre-mature atrial contraction(PAC) and atrial flutter were analyzed in 7 cases. Resets The exaggerated atrial re-polarization waves were observed in multiple leads especially in V_3 and V_4. The coupling interval of PAC and at-rial flutter was short and fixed, while no such patterns could be seen in the PAC with longer coupling interval. Patients were suffered from heart,lungs and brain diseases or hypopotassaemia. The ECG changes weakened or disappeared when the patients' conditions improved. Conclusion With the illness, the rise of the atrial repo-larization dispersion, caused atrial electric activity unstable and leads reentrant atrial impulse easily.