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CHIARA B. VICENTINI AUGUSTO C. VERONESE PAOLO GIORI PIER GIOVANNI BARALDI MARIO GUARNERI 《Chemical biology & drug design》1980,16(1):48-54
4-Oximino-pyrazol-5-ones 2a, b and their esters with N-protected amino acids 3a, b have been studied for carboxyl activation in peptide synthesis. 2a, b and 3a, b appear to be diastereoisomeric mixtures whose configurations have been assigned on the basis of spectroscopic and X-ray data. Some peptides obtained using these pyrazolone derivatives are reported: no racemization was noted by the Weig and test. 相似文献
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Recurrences in the Blanking Period and 12‐Month Success Rate by Continuous Cardiac Monitoring After Cryoablation of Paroxysmal and Non‐Paroxysmal Atrial Fibrillation
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79.
Catheter Ablation of Ventricular Tachycardia in Patients With MitraClip Device: Preliminary Findings
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80.
ERALDO OCCHETTA M.D. LEONARDO BOLOGNESE M.D. REA MAGNANI M.D. GABRIELLA FRANCALACCI M.D. GIORGIO ROGNONI M.D. PAOLO ROSSI M.D. 《Journal of cardiovascular electrophysiology》1989,3(4):289-300
Between June 1986 and December 1988, eight patients were treated with an Orthocor II 284 A antitachycardia pacemaker (Cordis Corp., Miami, FL, USA) forsupraventricular tachycardia (SVT) and ventricular tachycardia (VT) termination. Four patients had intra-AV nodal reentrant tachycardias; 1 patient had AV reentrant tachycardia with an atrio-nodal accessory bypass tract; 2 patients had AV reentrant tachycardias with concealed Kent bundle, and 1 patient had ventricular tachycardia. All patients had been treated with three or more drugs and were considered to be drug refractory. The programmed antitachycardia mechanism used for patients with SVT were: automatic overdrive in five patients and burst scanning in two patients. In the patient with VT, a critically timed double extrastimulus with fixed coupling interval was programmed. Follow-up ranged from 2 to 30 months. The pacemaker proved to be effective in terminating tachycardias in all cases with SVT; in the patient with VT, the programmed antitachycardia mechanism was effective for a long time, but after an episode of sustained VT not interrupted by the pacemaker, the patient underwent automatic cardioverter/defibrillator (AICD) implantation. Additional antiarrhythmic therapy was required in 3 patients to control their maximum sinus rate, in 1 patient to reduce tachycardia episodes and to enable termination, and in 2 patients to prevent spontaneous atrial fibrillation. It is concluded that Orthocor II is a flexible and versatile antitachycardia pacemaker providing a safe and effective control of recurrent tachycardia in selected patients. 相似文献