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[Intervention of lidocaine and Astragalus membranaceus on ventricular late potentials].


Shi HM, Dai RH, Fan WH.




Zhongguo Zhong Xi Yi Jie He Za Zhi


16 and 22 patients with positive ventricular late potentials (LP) recorded on signal-averaged electrocardiograms (SAECG) were treated with lidocaine 100 mg iv. or Astragalus membranaceus 24 g iv. drip for 2 weeks respectively. As a result, the SAECGs of 2 (12.5%) and 3 (13.6%) of them normalized respectively. Compared with baseline, there were no significant changes in average HFQRSD, LAS and RMS 40 after treatment of lidocaine. HFQRSD and LAS were shortened significantly 115.9 +/- 29.9 vs 125.1 +/- 29.4 ms (P < 0.001); and 44.8 +/- 15.4 vs 52.8 +/- 15.4 ms (P < 0.001), and RMS 40 was enlarged 20.0 +/- 18.6 vs 12.8 +/- 19.0 microV (P < 0.05) only after treatment of Astragalus membranaceus. It is suggested that the duration of LP was shortened.

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