Indian Pacing and Electrophysiology Journal最新文献_第4页

Multiple ventricular fibrillation therapy triggered at slower ventricular tachycardia rate – What is the mechanism? 以较慢的室性心动过速触发的多重室颤治疗--其机制是什么？

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.04.010

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Insight from the microelectrodes in case of two different types of premature ventricular contractions originating from left ventricular summit 微电极对源自左心室顶点的两种不同类型室性早搏的观察。

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.05.001

{"title":"Insight from the microelectrodes in case of two different types of premature ventricular contractions originating from left ventricular summit","authors":"","doi":"10.1016/j.ipej.2024.05.001","DOIUrl":"10.1016/j.ipej.2024.05.001","url":null,"abstract":"<div><p>Premature ventricular contraction (PVC) is usually eliminated in the earliest activation site based on the conventional electrode of ablation catheter. However, the large size electrode may contain far-field potential. The QDOT MICRO ablation catheter has three micro electrodes with 0.33 mm electrode length, in addition to the conventional electrode with 3.5 mm electrode length. The micro electrodes can reflect only near-field potential.</p><p>A 78-year-old with symptomatic frequent PVCs underwent catheter ablation. PVC-1 showed good pace-mapping in distal great cardiac vein (GCV). The local bipolar electrograms in the conventional electrode of ablation catheter preceded the PVC-QRS onset by 32 ms in distal GCV and 13 ms in left coronary cusp (LCC), but those in the micro electrodes preceded only by 13 ms both in distal GCV and LCC. PVC-1 was eliminated by radiofrequency (RF) application, not in distal GCV, but in LCC. PVC-2 showed good pace-mapping in LCC. The local bipolar electrograms in both the conventional electrode and the micro electrodes of ablation catheter preceded the PVC-QRS onset by 32 ms in LCC. PVC-2 was eliminated by RF application in LCC.</p><p>Comparing the local electrograms of micro electrodes and the conventional electrodes may be important for identifying depth of the origin of PVCs.</p></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0972629224000524/pdfft?md5=5896e657f2054434025bc6e2c4b41b0d&pid=1-s2.0-S0972629224000524-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140904821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Unearthing an artifact: Managed ventricular pacing pseudo-malfunction in an 81-year-old puerto rican female 出土文物：一名 81 岁波多黎各女性的人工心脏起搏假性故障。

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.06.002

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To monitor, or not to monitor, that is the question 监控还是不监控，这是一个问题。

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.07.003

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Using artificial intelligence and deep learning to optimise the selection of adult congenital heart disease patients in S-ICD screening 利用人工智能和深度学习优化 S-ICD 筛查中成人先天性心脏病患者的选择。

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.06.003

{"title":"Using artificial intelligence and deep learning to optimise the selection of adult congenital heart disease patients in S-ICD screening","authors":"","doi":"10.1016/j.ipej.2024.06.003","DOIUrl":"10.1016/j.ipej.2024.06.003","url":null,"abstract":"<div><h3>Introduction</h3><p>The risk of complications associated with transvenous ICDs make the subcutaneous implantable cardiac defibrillator (S-ICD) a valuable alternative in patients with adult congenital heart disease (ACHD). However, higher S-ICD ineligibility and higher inappropriate shock rates-mostly caused by T wave oversensing (TWO)- are observed in this population. We report a novel application of deep learning methods to screen patients for S-ICD eligibility over a longer period than conventional screening.</p></div><div><h3>Methods</h3><p>Adult patients with ACHD and a control group of normal subjects were fitted with a 24-h Holters to record their S-ICD vectors. Their T:R ratio was analysed utilising phase space reconstruction matrices and a deep learning-based model to provide an in-depth description of the T: R variation plot for each vector. T: R variation was compared statistically using <em>t</em>-test.</p></div><div><h3>Results</h3><p>13 patients (age 37.4 ± 7.89 years, 61.5 % male, 6 ACHD and 7 control subjects) were enrolled. A significant difference was observed in the mean and median T: R values between the two groups (p < 0.001). There was also a significant difference in the standard deviation of T: R between both groups (p = 0.04).</p></div><div><h3>Conclusions</h3><p>T:R ratio, a main determinant for S-ICD eligibility, is significantly higher with more tendency to fluctuate in ACHD patients when compared to a population with normal hearts. We hypothesise that our novel model could be used to select S-ICD eligible patients by better characterisation of T:R ratio, reducing the risk of TWO and inappropriate shocks in the ACHD patient cohort.</p></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0972629224000731/pdfft?md5=ac57435926d04f66f8b2cf52cb4ef08f&pid=1-s2.0-S0972629224000731-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141318517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Entrainment responses from a reentrant circuit with 2 entry sites: When the antidromic wavefront can drive 具有两个入口点的再入电路的诱导响应：当反自旋波面能够驱动时。

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.06.006

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The usefulness of "reversed U-curve" HD grid mapping 反向 U 型曲线 "高清网格制图的实用性。

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.04.011

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Challenging wide QRS tachycardia diagnosis: One trigger two mechanisms 宽 QRS 心动过速的诊断难题：一种触发两种机制

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.04.008

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Pacemaker implantation in retro aortic brachiocephalic vein 在后主动脉肱脑静脉中植入起搏器。

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.06.005

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Refractory coronary vasospasm complicated by complete atrio-ventricular block during neck surgery: is there an indication for pacing? 颈部手术中完全性房室传导阻滞并发的难治性冠状动脉血管痉挛：有起搏指征吗？

Indian Pacing and Electrophysiology Journal Pub Date : 2024-07-01 DOI: 10.1016/j.ipej.2024.05.005

{"title":"Refractory coronary vasospasm complicated by complete atrio-ventricular block during neck surgery: is there an indication for pacing?","authors":"","doi":"10.1016/j.ipej.2024.05.005","DOIUrl":"10.1016/j.ipej.2024.05.005","url":null,"abstract":"<div><p>Vasospastic angina is a clinical condition characterized by coronary artery spasm in angiographically normal coronary arteries. Vasospastic angina can often lead to ventricular arrhythmias, sudden cardiac death, or life-threatening bradyarrhythmias, such as high-degree atrioventricular block or asystole. We present the unusual case of a woman with depressive syndrome who underwent emergency surgery for hemostasis of a neck lesion that caused hemorrhagic shock after a suicide attempt. During surgery, the electrocardiogram revealed inferior and posterior ST-segment elevation, total atrioventricular block and torsades de pointes; the patient also suffered 4 minutes of cardiac arrest. A temporary pacemaker was placed. Coronary angiography showed right coronary artery vasospasm. Following a second similar episode after tracheostomy, a permanent pacemaker was implanted. The indication for definitive electrostimulation in such a context and the stimulation mechanisms of the carotid sinus underlying vasospasm constitute the interesting points of this clinical case.</p></div><div><h3>Learning objective</h3><p>The indication for definitive electrostimulation in a context of recurrent episodes of high-degree atrioventricular block during vasospastic angina and the stimulation mechanisms of the carotid sinus underlying vasospasm constitute the interesting points of this clinical case.</p></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0972629224000561/pdfft?md5=6f9ae79d688f0c87500739aacacba37d&pid=1-s2.0-S0972629224000561-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140916483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0