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   20080217-reading
   摘自加州大学论坛旧版 (Universities in California Bulletin Board System)  dingmd  2008-02-18 00:18
#596: Lujan HL. Sex Differences to Myocardial Ischemia and Beta-Adrenergic Receptor Blockade in Conscious Rats. Am J Physiol Heart Circ Physiol. 2008...... Journal Article Thus male sex hormones increase and female sex hormones decrease the susceptibility to ischemia-induced sustained ventricular tachycardia. Beta-adrenergic receptor blockade increased the VAT in intact males and GnX females only.
雄性激素增加而雌性激素减低缺血引起的持续性室速. B受体阻滞剂增加雄性和去卵巢的雌性大鼠的室速诱发阈值.      http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18263711

#597: Lujan HL. Sex influences the susceptibility to reperfusion-induced sustained ventricular tachycardia and beta-adrenergic receptor blockade in conscious rats. Am J Physiol Heart Circ Physiol. 2007;293:H2799-808...... Journal Article culminate 结束,达到极点, orchidectomy 睾丸切除术, Ovariectomy卵巢切除术.
Reperfusion culminated in sustained VT in 77% (10 of 13 susceptible) of female rats and 56% (9 of 16 susceptible) of male rats (P > 0.05, male vs. female). beta-Adrenergic receptor blockade prevented sustained VT in females only [1 of 9 susceptible females (11%) vs. 6 of 9 susceptible males (67%), P < 0.05]. Ovariectomy did not significantly reduce the susceptibility to reperfusion arrhythmias [5 of 9 susceptible (56%)]. In sharp contrast, orchidectomy significantly increased the susceptibility to reperfusion arrhythmias [9 of 9 susceptible (100%)]. Finally, beta-adrenergic receptor blockade prevented sustained VT in ovariectomized females [0 of 4 susceptible (0%)] and orchidectomized males [0 of 7 susceptible (0%)], but the protective effect of beta-blockade was due to a reduction in heart rate in males only. Thus gonadal hormones influence the susceptibility to reperfusion-induced arrhythmias, as well as the effects and mechanisms of beta-adrenergic receptor blockade.
再灌注导致77%雌鼠和56%的雄鼠持续性室速(p>0.05). B受体阻滞剂仅能阻止雌鼠发生室速,(雌,雄鼠给予B受体阻滞剂后VT发生率为11%,67%).卵巢切除术没有显著减少再灌注心律失常(56%). 作为对照, 睾丸切除术确增加了再灌注心律失常(100%). B受体阻滞剂能阻止卵巢切除术后的雌鼠和睾丸切除术后的雄鼠的持续性室速(0%).但是这种保护作用在雄鼠是由于减低心律导致的. 所以, 性激素可以影响再灌注心律失常的发生率以及B受体阻滞剂的作用和机制.
      http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=17630345

#598: Lequerica JL. A cooled water-irrigated intraesophageal balloon to prevent thermal injury during cardiac ablation: experimental study based on an agar phantom. Phys Med Biol. 2008;53:N25-34...... Journal Article The study suggests that the cooling balloon gives thermal protection to the esophagus when a minimum pre-cooling period of 2 min is programmed at a coolant temperature of 5 degrees C or less.
此研究表明冷却球囊可以保护食管, 条件是至少冷却液的温度低5度并至少持续两分钟.      http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18263938

#599: Garg P. The New World of Cardiac Interventions: A Brief Review of the Recent Advances in Non-Coronary Percutaneous Interventions. Heart Lung Circ. 2008...... Journal Article The New World of Cardiac Interventions: A Brief Review of the Recent Advances in Non-Coronary Percutaneous Interventions
非冠脉经皮介入手术治疗进展.      http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18262841

#600: Steven D. What is the real atrial fibrillation burden after catheter ablation of atrial fibrillation? A prospective rhythm analysis in pacemaker patients with continuous atrial monitoring. Eur Heart J. 2008...... Journal Article Continuous atrial monitoring reveals AF ablation success rates comparable with those assessed by clinical evaluation. Symptomatic freedom of AF correlated well with the actual freedom of AF at least in this highly symptomatic patient cohort.
连续的起搏器内置监测功能显示房颤的射频消融成功率和临床的评估相似. 体征性的无房颤和实际上的无房颤至少在这组症状明显的病人中相关性很好.      http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18263865

#601: Gjesdal K. Curative ablation for atrial fibrillation: A systematic review. Scand Cardiovasc J. 2008;42:3-8...... Journal Article Results from observational and registry studies are confirmed: RF-ablation reduces recurrence rate of AF, and can be done with few serious complications. Limitations are few patients >70 years, and only one year follow-up.
现在的观察和注册研究确认: 射频消融可以减低房颤的发生率, 严重的复发率也较低. 局限性是>70的病人, 并且只有一年的随访.      http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18273730

#602: Madias JE. The importance of the P-waves in the differentiation of attenuation of the QRS voltage due to pericardial effusion versus due to peripheral edema. J Card Fail. 2008;14:55-60...... Journal Article P-waves in the differential diagnosis of the attenuated voltage of QRS complexes from pericardial effusion (PEREF) and from those resulting from peripheral edema (PERED) of varying pathophysiologic etiology. Attenuation of the amplitude of the electrocardiogram QRS complexes occurs in both patients with PEREF and PERED; however, attenuation of the amplitude of the P-waves is seen only in patients with PERED, and this observation is useful in the differential diagnosis of these 2 clinical conditions.
在心包积液和外周性水肿都可以导致QRS 振幅减低, 但是只有外周性水肿导致p波的振幅也减低.      http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18226774

#603: Martinek M. Impact of integration of multislice computed tomography imaging into three-dimensional electroanatomic mapping on clinical outcomes, safety, and efficacy using radiofrequency ablation for atrial fibrillation. Pacing Clin Electrophysiol. 2007;30:1215-1223...... Journal Article Multislice computed tomography image integration into electroanatomic mapping significantly improves the success of wide area circumferential ablation with confirmed isolation of the PV and additional lines. In addition, the safety of radiofrequency ablation with regard to the occurrence of PV stenosis is increased in comparison with a control group using conventional electroanatomic mapping alone. Procedural efficacy remains unchanged.
多层CT扫描三维成像整合电标测图可以明显提高肺静脉外周消融的成功率.      http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=17897124
   摘自加州大学论坛旧版 (Universities in California Bulletin Board System)  dingmd  2008-02-18 00:18