Pace-Pacing and Clinical Electrophysiology最新文献

{"title":"Comparative Study of Arctic Front Advance Pro and POLARx Cryoballoons for Linear Ablation of the Left Atrial Roof.","authors":"Takatoshi Shigeta, Yuichiro Sagawa, Hirofumi Arai, Atsuhito Oda, Koji Sudo, Kazuya Murata, Kaoru Okishige, Manabu Kurabayashi, Masahiko Goya, Tetsuo Sasano, Yasuteru Yamauchi","doi":"10.1111/pace.15112","DOIUrl":"10.1111/pace.15112","url":null,"abstract":"<p><strong>Background: </strong>The effectiveness of cryoballoon ablation (CBA) of the left atrial (LA) roof in addition to pulmonary vein isolation (PVI) using a novel cryoballoon catheter, POLARx, remains unclear.</p><p><strong>Methods: </strong>This study compared the efficacy of LA roof line ablation and PVI using POLARx (Boston Scientific) or AFA-Pro (Medtronic) in 100 patients with persistent atrial fibrillation. The right superior pulmonary vein (PV) anchoring and raise-up techniques were consistently used for LA roof line ablation, and rapid right ventricular pacing was applied if the cryoballoon temperature did not reach -40°C.</p><p><strong>Results: </strong>Complete conduction block at the LA roof could be obtained in all patients with POLARx and in 98.0% of patients with AFA-Pro. Rapid right ventricular pacing was needed in 64.0% of patients with AFA-Pro and in no patients with POLARx. During LA roof line ablation, the nadir cryoballoon temperature was significantly lower with POLARx than with AFA-Pro (right: -54.2°C ± 4.4°C vs. -46.0°C ± 5.4°C; central: -56.8°C ± 4.4°C vs. -45.7°C ± 4.8°C; left: -56.1°C ± 4.3°C vs. -46.1°C ± 5.7°C), and the cryoballoon temperature reached -40°C earlier with POLARx than with AFA-Pro (right: 30.8 ± 7.4 s vs. 74.1 ± 37.7 s; central: 28.2 ± 5.2 s vs. 62.9 ± 30.9 s; left: 29.8 ± 5.8 s vs. 69.6 ± 40.7 s).</p><p><strong>Conclusion: </strong>The nadir cryoballoon temperature with POLARx was approximately 10°C lower than with AFA-Pro, consistently dropping below -40°C during LA roof line CBA. Thus, a complete conduction block of the LA roof line can be easily accomplished using right superior PV anchoring and the raise-up techniques without the need for rapid right ventricular pacing with POLARx.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"119-127"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of Patients With Asymptomatic Atrial Fibrillation and Ischemic Stroke-Insights From the GLORIA-AF Registry (Phase 2).","authors":"Tobias Heer, Uwe Zeymer, Christopher J Schwarzbach, Karlheinz Seidl, Ursula Rauch-Kröhnert, Sabrina Marler, Christine Teutsch, Hans-Christoph Diener, Jochen Senges, Gregory Y H Lip, Menno V Huisman","doi":"10.1111/pace.15113","DOIUrl":"10.1111/pace.15113","url":null,"abstract":"<p><strong>Background: </strong>Asymptomatic nonvalvular atrial fibrillation is often suspected in patients with cryptogenic stroke which constitute 20%-30% of ischemic strokes. Detection of atrial fibrillation (AF) and treatment with anticoagulation can reduce the risk of stroke. We sought to investigate the prevalence of asymptomatic atrial fibrillation (aAF) in patients with a history of stroke or an acute stroke on admission.</p><p><strong>Methods: </strong>From November 2011 until December 2014, 15,308 patients with a first episode of AF were enrolled in phase 2 of the international, prospective, multicenter global registry on long-term oral anticoagulation treatment in patients with AF (GLORIA-AF) Registry. For the present analysis, we focused on patients with aAF regarding the prevalence of stroke.</p><p><strong>Results: </strong>One third of patients (n = 4892, 32%) had aAF. Of these, 611 (12.5%) had a history of stroke or an acute stroke on admission. In contrast, 519 of 10,416 (5.0%) patients with symptomatic AF (sAF) had a history of stroke or an acute stroke on admission. Higher age, male gender, permanent AF, stroke, and the combination of stroke, TIA or systemic embolism were associated with a higher prevalence of aAF on admission. In a multivariable analysis, patients with aAF had a 2.3-fold (95% confidence interval (CI), 2.02-2.54) risk for stroke compared to patients with sAF. Other independent risk factors for stroke were a history of prior bleeding (odds ratio 1.62, 95% CI, 1.34-1.92), chronic kidney disease (1.38, 1.21-1.56), and diabetes mellitus (1.24, 1.10-1.41).</p><p><strong>Conclusion: </strong>aAF is reported in about one third of patients with newly diagnosed AF and is associated with a 2.3-fold risk for stroke compared to sAF. Therefore, screening for aAF in high-risk patients might be appropriate to prevent further embolic cerebrovascular events.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"42-49"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utility of the Novel Auto + A3 Threshold Function in Maintaining Atrioventricular Synchrony.","authors":"Ryo Ohinata, Naoya Inoue, Shuji Morikawa","doi":"10.1111/pace.15119","DOIUrl":"10.1111/pace.15119","url":null,"abstract":"<p><strong>Introduction: </strong>The VDD-leadless pacemaker aims to maintain high atrioventricular (AV) synchrony, but proper sensing setup is crucial.</p><p><strong>Methods and results: </strong>This case was an elderly woman with an AV block who received a dual-chamber pacemaker. Due to ventricular pacing failure, a Micra AV2 was implanted. However, postimplantation, high sinus rate, and frequent premature ventricular contractions were noted. Therefore, the auto + A3 threshold function was used in the atrial-sensing setup. A few days later, the MAM test confirmed good AV synchrony.</p><p><strong>Conclusion: </strong>The auto + A3 threshold function equipped in the Micra AV2 may offer to maintain high AV synchrony.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"79-82"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142803519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A narrow complex tachycardia with a short HV interval: What is the mechanism?","authors":"Hongwu Chen, Hao Wang, Ying Jin, Ashkan Ehdaie, Xunzhang Wang, Lang He, Minglong Chen","doi":"10.1111/pace.15052","DOIUrl":"10.1111/pace.15052","url":null,"abstract":"<p><p>The case was a 15-year-old male with a history of paroxysmal supraventricular tachycardia refractory to medical therapy and prior catheter. A repeat electrophysiology study and catheter ablation were applied. Baseline AH and HV intervals were 100 and 55 ms during normal sinus rhythm (NSR), respectively. Programmed atrial stimulation induced a short RP narrow complex tachycardia (HV interval 22 ms) with an incomplete right bundle branch block configuration and right axis deviation. Tachycardia was terminated with ATP 5 mg injection. An atrial premature beat within the His refractory period advanced and reset tachycardia. Entrainment performed from the coronary sinus and left ventricle both showed a post-pacing interval minus tachycardia cycle length (TCL) of 90 ms. After confirming the diagnosis, left atrial mapping along mitral annulus was performed using trans-septal access and accessory pathway potentials were recorded during NSR and tachycardia at the superior mitral annulus. An irrigated ablation catheter guided by 3-D mapping was used to perform ablation during tachycardia. Tachycardia terminated immediately during the first RF application with ensuing automaticity exhibiting a warm-up during radiofrequency delivery and a cooling down upon the suspension of ablation. Therefore, all phenomena of Mahaim-fiber associated tachycardia were observed. In this case, we describe an antidromic atrio-ventricular reentry tachycardia using a left atrio-fascicular fiber inserting into the proximal left anterior fascicle.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"63-67"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Value of P-wave Parameters in Predicting Outcomes of Repeat Catheter Ablation for Paroxysmal Atrial Fibrillation.","authors":"Ibrahim Antoun, Xin Li, Zakkariya Vali, Ivelin Koev, Riyaz Somani, G André Ng","doi":"10.1111/pace.15128","DOIUrl":"10.1111/pace.15128","url":null,"abstract":"<p><strong>Background: </strong>Pulmonary vein isolation (PVI) has been established as an effective management option for symptomatic paroxysmal atrial fibrillation (PAF). We aimed to explore the role of P-wave parameters in a 12-lead electrocardiogram (ECG) in predicting the success of repeat PAF ablation.</p><p><strong>Methods: </strong>We enrolled consecutive patients who underwent a second AF ablation procedure for PAF in a UK tertiary center after an index ablation conducted between 2018 and 2019 and a repeat ablation up to 2021. A digital 12-lead ECG was recorded with a 1-50-Hz bandpass filter applied. P-wave duration (PWD), P-wave voltage (PWV), P-wave dispersion (PWDisp), and P-wave terminal force in V1 (PTFV1) were measured before and after the procedure. Changes were correlated with the 12-month clinical outcome. Procedural success was freedom from ECG-documented AF up to 12 months following ablation.</p><p><strong>Results: </strong>Study criteria were satisfied by 72 patients, of which 43 (60%) had successful repeat PVI at 12 months. The mean age is 65, and 47 (65%) were males. The demographics were comparable between both study arms. PWD decreased after successful repeat ablations (136.7 to 124.6 ms, p = 0.01) and failed repeat ablations (135.4 to 125.3 ms, p = 0.009) without a significant change between both arms. PMV and PWDisp did not change significantly after both study arms. PTFV1 significantly decreased after successful repeat ablations (-3.1 to -4.4 mm.s, p = 0.005) without a significant change after failed ablations (-2.9 to -2.7 mm.s, p = 0.42). Changes were statistically significant between both arms (p = 0.004).</p><p><strong>Conclusion: </strong>PTFV1 reduction following the second AF ablation was correlated with successful repeat AF ablation at 12 months.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"36-41"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11708455/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142883606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound-Guided Axillary Vein Puncture Versus Landmark-Guided Approach for Cardiac Implantable Electronic Device Placement.","authors":"Francesco Perna, Francesco Flore, Alessandro Telesca, Eleonora Ruscio, Roberto Scacciavillani, Gianluigi Bencardino, Maria Lucia Narducci, Gaetano Pinnacchio, Gemma Pelargonio","doi":"10.1111/pace.15107","DOIUrl":"10.1111/pace.15107","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Introduction: &lt;/strong&gt;Ultrasound (US)-guided axillary vein puncture is a safe and effective approach for cardiac implantable electronic device (CIED) implantation, and it is highly recommended by the current consensus document. However, only reports on small populations are available in the current literature regarding the comparison of this technique with other traditional approaches (subclavian vein blind puncture and cephalic vein surgical cutdown).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Purpose: &lt;/strong&gt;We aimed to assess the effectiveness and safety of US- guided axillary vein puncture using a microintroducer kit for CIED implantation as compared to the aforementioned traditional approaches.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;All consecutive patients with an indication to CIED implantation were prospectively enrolled in our observational study from March 2021 to July 2023. Patients were divided into three groups based on venous access route, according to the operator's preference: cephalic vein surgical cutdown (G1), US-guided axillary vein puncture (G2), and subclavian vein blind puncture (G3). Clinical and procedural characteristics, success and complication rates were considered for analysis.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;A total of 1000 patients (65.2% male, mean age 75.5 ± 10.8 years) were enrolled. Cephalic vein surgical cutdown was chosen in 172 (G1, 17.2%), US-guided axillary access in 433 patients (G2, 43.3%), and subclavian vein in 395 (G3, 39.5%). Success rate was 77.6% in G1, 96.3% in G2, and 97.2% in G3 (G2 vs. G3, p = 0.5; G1 vs. G2, p &lt; 0.0001; G1 vs. G2. vs. G3, p &lt; 0.0001). Compared to subclavian and cephalic groups, in the US-guided axillary group, a successful access was obtained with a reduced mean number of puncture attempts (G2 vs. G3: 1.3 ± 0.9 vs. 1.8 ± 1, p &lt; 0.0001) and needed reduced times to get access (G2 vs. G3: 15 s [10-30 s] vs. 40 [20-65 s]; p &lt; 0.0001, G1 vs. G2: 210 s [180-247 s] vs. 15 s [10-30 s]; p &lt; 0.0001) and to reach the superior vena cava, without differences in total procedural times (72.9 ± 30.4 vs. 75.7 ± 34.8 min, p = 0.24). Bailout fluoroscopy times [1 (0-8) s vs. 20 (10-58) s, p &lt; 0.0001] and usage of vein angiography (11.9% vs. 51.3%, p &lt; 0.0001) were lower in G2 as compared to G3. Complication rate did not differ among the three study groups (early complications: 2.9% in G1, 2.5% in G2, and 2.5% in G3, p = 0.96; late complications: 2.9% in G1, 1.6% in G2, and 0.8% in G3, p = 0.15).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions: &lt;/strong&gt;US-guided axillary vein puncture for CIED implantation using a microintroducer kit is a safe technique with a very high success rate. Compared to other traditional approaches, it allows to get access with a lower number of puncture attempts and with reduced times, without prolonging the total procedural time. Moreover, x-ray use and need for contrast medium are very rare in US-guided axillary approach. Hence, it should be considered the strategy of choice for most patients undergoing CIED im","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"9-20"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11708441/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142911125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep Septal Pacing for Pacemaker-Induced Cardiomyopathy.","authors":"Jordi Mercé, Ignasi Anguera, Marcos Rodríguez, Valentina Faga, Julián Rodríguez, Paolo D Dallaglio, Rodolfo San Antonio, Andrea Di Marco","doi":"10.1111/pace.15135","DOIUrl":"10.1111/pace.15135","url":null,"abstract":"<p><strong>Introduction: </strong>Right ventricular (RV) pacing can impair left ventricular function and cause heart failure, known as pacing-induced cardiomyopathy (PICM). Upgrade to cardiac resynchronization (CRT) is its usual treatment; recently left bundle branch area pacing (LBBAP) has emerged as a potential alternative. Deep septal pacing (DSP), a simplified alternative to LBBAP, is still able to achieve narrower paced QRS than during conventional RV pacing. The aim of this study was to assess the effect of DSP in a cohort of patients with PICM.</p><p><strong>Methods and results: </strong>Consecutive patients diagnosed with PICM were included. The aim was to upgrade patients to DSP. The procedure was considered successful if a paced QRS duration ≤140 ms was obtained, in the absence of a terminal R wave in V1. Twelve patients were included. The mean baseline LVEF was 33% (SD 4%), and the mean percentage of RV pacing was 99% (SD 1%). All patients had symptomatic heart failure. The mean paced QRS duration was 172 ms (SD 14 ms) with RV pacing, and 130 ms (SD 7 ms) with DSP (mean difference 42 ms, p < 0.001). At 6 months, the mean LVEF after the upgrade was 46% (SD 9%), significantly superior to LVEF with RV pacing (p = 0.001), a mean improvement of 13% (SD 10%). All patients except one experienced an improvement in LVEF of at least 5%.</p><p><strong>Conclusions: </strong>Our data suggest that DSP may be an effective and simpler alternative to biventricular or LBBAP in patients with PICM. Narrower paced QRS complexes can be achieved, which may lead to an improvement in left ventricular function.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"145-148"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142883658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vein of Marshall Ethanol Infusion: Beware the Left Atrial Appendage Isolation.","authors":"Xiaofeng Lu, Juan Xu, Tong Wei, Lin Liang, Jun Li, Shaowen Liu, Songwen Chen","doi":"10.1111/pace.15097","DOIUrl":"10.1111/pace.15097","url":null,"abstract":"<p><p>A 58-year-old woman was referred for atrial flutter ablation after atrial fibrillation ablation. Linear and reinforcement mitral isthmus ablation failed to terminate the perimitral flutter. During vein of Marshall ethanol infusion (VOMEI), the flutter was terminated and followed by left atrial appendage (LAA) isolation. Voltage mapping showed that a large low voltage area was created in the superior and anterior wall of left atrium. During the waiting time, the LAA activation recovered. It would be necessary to keep in mind that VOMEI would lead to uncontrolled lesion of left atrium.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"59-62"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142570333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Case of Very Early Lead Fracture in an Implantable Cardioverter-Defibrillator: Management and Follow-Up.","authors":"Marwan Shawki, Sam Mirzaee, Cameron McCormack, Gareth J Wynn, Han S Lim","doi":"10.1111/pace.15103","DOIUrl":"10.1111/pace.15103","url":null,"abstract":"<p><strong>Introduction: </strong>Implantable cardioverter defibrillators (ICDs) lead fractures are rare but serious complications, often leading to inappropriate shocks. The early occurrence of such fractures post-implantation is exceptionally uncommon.</p><p><strong>Methods and results: </strong>We present a case of a 53-year-old male with hypertrophic cardiomyopathy who experienced an inappropriate shock due to a lead fracture just 4 days after ICD implantation. The fractured lead was successfully extracted and replaced using a gooseneck snare passed through an oversized TightRail with no immediate complications.</p><p><strong>Conclusion: </strong>Early lead fractures can occur shortly after ICD implantation, leading to inappropriate shocks. Successful management, including extraction and reimplantation, is possible even in these early cases. Clinicians should remain vigilant, and remote monitoring can play a crucial role in the timely detection of such complications.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"68-71"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional Ventricular Undersensing After Ventricular Ectopic Beats Due to ICD Dynamic Sensitivity.","authors":"Antonino Micari, Paolo Bellocchi, Pasquale Crea","doi":"10.1111/pace.15099","DOIUrl":"10.1111/pace.15099","url":null,"abstract":"<p><p>An 80-year-old patient, previously implanted for idiopathic sustained ventricular tachycardia with a Rivacor VR-T DX implantable cardioverter defibrillator (ICD Biotronik, Berlin, Germany), came to our pacemaker clinic for palpitations. Electrocardiogram (ECG) showed sinus bradycardia with interpolated ventricular ectopic beats. A ventricular-paced event occurred with a coupling interval shorter than the expected one suggesting ventricular undersensing. The phenomenon can be explained by the default ICD sensitivity setting proposed by the manufacturer.</p>","PeriodicalId":54653,"journal":{"name":"Pace-Pacing and Clinical Electrophysiology","volume":" ","pages":"50-52"},"PeriodicalIF":1.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142513117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}