Bipolar esophageal electrocardiography by using standard limb leads

Liu Xianzhe; Lu Zaiying; Zhao Huayue; Zhang Cuntai; Cai Liping

doi:10.1007/BF02887999

Current Medical Science ›› 1997, Vol. 17 ›› Issue (1) : 32 -35. DOI: 10.1007/BF02887999

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Bipolar esophageal electrocardiography by using standard limb leads

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Abstract

The ear-xiphisternum distance (EXD, the distance from the low edge of the ear to the xiphisternal basis in supine position) was used as a reference value for esophageal catheter insertion. ECGs recorded in the esophagus with bipolar electrocardiography using standard limb lead (ESLL) and conventional unipolar lead (ECUL) were compared. 112 patients with sinus rhythm and 76 patients during paroxysmal supraventricular tachycardia (PSVT) whose P-wave and QRS complex did not overlap were studied. The results suggested that in sinus rhythm the amplitude of the P-wave in ESLL was larger and the T-wave was smaller than in ECUL. During PSVT, the P-wave was much clear and higher in each lead of ESLL than that in ECUL. The ideal range of esophageal ECG recording was situated between the end of EXD and 6.5 cm proximal to it.

Keywords

esophageal electrocardiography / standard limb lead / paroxysmal supraventricular tachycardia

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Liu Xianzhe, Lu Zaiying, Zhao Huayue, Zhang Cuntai, Cai Liping. Bipolar esophageal electrocardiography by using standard limb leads. Current Medical Science, 1997, 17(1): 32-35 DOI:10.1007/BF02887999

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References

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