Objective:We report our clinical use of dual chamber pacing in patients with hypertrophic obstructive cardiomyopathy (HOCM) and its hemodynamiceffects- Methods:Twenty three patients,16 males and 7 females, mean age of...
详细信息
Objective:We report our clinical use of dual chamber pacing in patients with hypertrophic obstructive cardiomyopathy (HOCM) and its hemodynamiceffects- Methods:Twenty three patients,16 males and 7 females, mean age of 39 years, with HOCM, were implanted permanent dual chamber pacemaker- Allpatients had clinicalsymptomsrefractoryto medicaltherapy (βblockersand/orCa2 + blockers) and12 ofthem hadsyncope- Mean thickenessoftheventricularseptum was2-1 cm- Results:Thesymptoms weresignificantlyimprovedin20 patientsafter pacing withshort A Vdelay comparedtothose before pacing- Theleft ventricularoutfolwtract(LVOT) pressure gradients werereducedfrom 51-05to 19-07 mmHgafterpacing(p<0-05)-In afollow up of9 months (5~23 months),no patients had syncope- Conclusion:Dual chamberpacingisan effective new methodtotreatpatients with HOCM
Objective : To explore the diagnostic value of STsegment depression Twave inversion on inferior leads during narrow QRScomplex tachycardia- Methods : We analyzed 12 lead electrocardiograms of 205 patients (112 males) ...
详细信息
Objective : To explore the diagnostic value of STsegment depression Twave inversion on inferior leads during narrow QRScomplex tachycardia- Methods : We analyzed 12 lead electrocardiograms of 205 patients (112 males) during narrow QRS complex supraventricular tachycardia to evaluate the significance of STsegment depression/T wave inversion- All patients underwent complete electrophysiologic evaluation and successful radiofrequency catheter ablation- None ofthem had pre excitation in sinus rhythm- Results : There were 99 atrioventricular node reentrant tachycardias (AVNRT) and 116 AV reciprocating tachycardias (AVRT)- STsegment depression or T wave inversion > 1-5 m V on inferior lead was present more often in AVRTthan in AVNRT, and the sensitivity were 62-5 % vs- 6-7 % ,70-2 % vs- 16-3 % and 64-4 % vs- 6-7 % on lead Ⅱ, Ⅲand aVF,respectively- The mean magnitude of Tinversion of AVRTon lead Ⅱ, Ⅲand aVF1-7 ±0-8 m V,1-6 ±0-8 m Vand 1-5 ±0-8 m V- For AVRT,the specificity of STdepression/Twave inversion were 93 % ,90 % and 93 % on lead Ⅱ, Ⅲand aVF- The percentages of STsegment/T wave inversion on lead Ⅱ, Ⅲand aVFin AVRT with right side accessory pathway were significantly higherthan those with left side accessory pathway (84 % vs- 48 % ,86 % vs- 53 % and 82 % vs- 50 % ,respectively ,all p < 0-001)- Conclusion : The presence of STsegment depression/T wave inversion > 1-5 m V on inferior leads during narrow QRS complex tachycardia , strongly suggests arioventricular reciprocating tachycardia- This finding is helpful for the promptly distinguisgment of orthodromic AVRT using a concealed accessory pathway-
Objective:To evaluatethe efficacy and safety ofcoronary angioplastyforchronictotalocclusion (CTO, > 3 months)- Methods: Until Jury 20 ,1999 ,coronary angioplasty was performed in ourinstitute for 1 655 patients- Th...
详细信息
Objective:To evaluatethe efficacy and safety ofcoronary angioplastyforchronictotalocclusion (CTO, > 3 months)- Methods: Until Jury 20 ,1999 ,coronary angioplasty was performed in ourinstitute for 1 655 patients- The study was based on retrospective analysis of235 patients (14-2 % ) with CTO- 56-6% (133/235) ofthese patients weretriedto canalize withfloppy wires,34-0% (80/235) with intermediate wires,9-4 % (22/235) with standard stiffness wires- Stents weereimplantedfor 114 patients- Results:One hundred thirty two patients with single vessel disease,78 patients with double vessel diseases,25 patients with triple vessel diseases wereincludedinthisstudy- Targetlesions of CTO(248) were asfollowing:113 in LAD,86 in RCA,48 in LCX,1 in Ramus- 34 cases failed- 21 casesfailed for CTObutsuccessfulfor otherlesions,successrateforthe whole group was 76-6 % (180/235)- In hospital complications included 3 patients with in stentthrombosis,4 patients with coronary artery perforation ,8 patients with abrupt occlusion- There was no death or emergency CABG- Atfollow up,angiography wasrepeatedly performedfor25 patients- Nine patients hadrestenosisafterPTCA,11 patients within stentrestenosis,restenosisrate was 11-1 % (20/180)- Five patients had no sign ofrestenosis- Conclusion : With carefulcaseselection,the currenttools andtechniques couldresultin highersuccessrate withlower complicationforpatients with CTO-
暂无评论