Transmyocardial revascularization in dogs with acute myocardial ischemia by an alto frequency needle of electroª²surgical generator

    DAI Bingª²Guang, XU JUª²Lin, CAI Mingª²Ye, QU Qi, ZHANG Jingª²Guo, ZHANG Feng, LU Changª²Hui, YANG Min

    Department of Thoracic and Cardiovascular Surgery, Fourth People¬ðs Hospital of Ji¬ðnan City£¬Department of Thoracic and Cardiovascular Surgery, Qilu Hospital, Ji¬ðnan 250031,China

    ¡¾Abstract¡¿ AIM: To investigate myocardial revascularization and pathological changes following myocardial acupuncture with a domestic alto frequency needle of electrosurgical generator in dogs with acute myocardial ischemia. METHODS£ºAfter an area of acute myocardial ischemia was established, 30 dogs were ranª²domly divided into 3 groups. Of them, 10 dogs served as control group(Group A)in which no specific treatment was committed after ligation of the second branch of LAD; in another 10 dogs(Group B)£¬needle puncture was used; the rest 10 dogs served as electrosurgical needle group (Group C) in which the myocardium of the ischemic area was drilled with a domestic monopolar needle connected to a Valleylab Force 2 electrosurgical generator with pure cut energy at 120-160 W. The needle diameter (1 mm) and transmural channel density(1 cm) applied in Group B and Group C were the same except no connection to an electrosurgical generator in Group B. Dog hearts were harvested at intervals of l d ......