Journal of electrocardiology最新文献_第7页

Coexistence of three types of Bigeminy with different natures 三种不同性质的重婚并存。

IF 1.2 4区医学

Journal of electrocardiology Pub Date : 2026-01-01 Epub Date: 2025-12-20 DOI: 10.1016/j.jelectrocard.2025.154180

Xingjie Li, Yong Hu

引用次数: 0

Electrocardiographs before 1910: Manufacturers and surviving instruments 1910年以前的心电图仪：制造商和幸存的仪器。

IF 1.2 4区医学

Journal of electrocardiology Pub Date : 2026-01-01 Epub Date: 2025-12-18 DOI: 10.1016/j.jelectrocard.2025.154178

Olle Pahlm MD PhD , Bengt Uvelius MD PhD , Anders Widell MD PhD

{"title":"Electrocardiographs before 1910: Manufacturers and surviving instruments","authors":"Olle Pahlm MD PhD , Bengt Uvelius MD PhD , Anders Widell MD PhD","doi":"10.1016/j.jelectrocard.2025.154178","DOIUrl":"10.1016/j.jelectrocard.2025.154178","url":null,"abstract":"<div><div>Background: Early electrocardiograph predates electronic amplification and therefore required innovative and highly sensitive instrumentation. Willem Einthoven's introduction of the string galvanometer in 1903 enabled recording of clinically useful electrocardiograms and established electrocardiography as a diagnostic method.</div><div>Objectives: To describe the provenance and technical features of a uniquely complete string-galvanometer system preserved in Lund, Sweden, and to review early commercial production and surviving string galvanometers manufactured before 1910.</div><div>Methods: The Lund electrocardiograph was examined and compared with historical photographs, documentation from Einthoven's laboratory, archival sources, and contemporary literature. Museum and institutional collections as well as manufacturers' records were surveyed for surviving old instruments.</div><div>Results: The Lund string galvanometer electrocardiograph, constructed in 1909 from Einthoven's original drawings, retains its optical, magnetic coil system, cooling, and recording components and closely matches documented laboratory models. Only two companies produced string galvanometers commercially by then: Professor Max Th. Edelmann's Physikalisch-mechanisches Institut (Munich, Germany) and the Cambridge Scientific Instrument Company (Cambridge, England). Cambridge sold only 14 devices before 1910, and no complete instrument is known to have survived; Edelmann's production is poorly documented, with only few examples preserved.</div><div>Conclusions: Intact electrocardiographs from the earliest period of electrocardiography are extremely rare. The Lund instrument represents one of the best-preserved surviving complete devices and underscores the importance of documenting and conserving early biomedical technology.</div></div>","PeriodicalId":15606,"journal":{"name":"Journal of electrocardiology","volume":"94 ","pages":"Article 154178"},"PeriodicalIF":1.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145810046","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}

引用次数: 0

Does dispersion of atrial repolarization duration reflect atrial myopathy in left ventricular dysfunction? 心房复极时间离散度是否反映左心室功能不全的心房肌病？

IF 1.2 4区医学

Journal of electrocardiology Pub Date : 2026-01-01 Epub Date: 2025-12-18 DOI: 10.1016/j.jelectrocard.2025.154179

Abdülmelik Birgün , Muhammet Cihat Çelik , Macit Kalçık

引用次数: 0

Atrial repolarization in patients with left ventricular dysfunction 左心室功能不全患者心房复极

IF 1.2 4区医学

Journal of electrocardiology Pub Date : 2026-01-01 Epub Date: 2025-11-29 DOI: 10.1016/j.jelectrocard.2025.154160

Neha Pulath, Ramanathan Velayutham, Anish Bhargav, J. Barathkrishnan, Raja J. Selvaraj

{"title":"Atrial repolarization in patients with left ventricular dysfunction","authors":"Neha Pulath, Ramanathan Velayutham, Anish Bhargav, J. Barathkrishnan, Raja J. Selvaraj","doi":"10.1016/j.jelectrocard.2025.154160","DOIUrl":"10.1016/j.jelectrocard.2025.154160","url":null,"abstract":"<div><h3>Background</h3><div>Atrial depolarization is represented by the P wave on the electrocardiogram (ECG), while atrial repolarization (Ta wave) is usually obscured by the QRS complex. In patients with third-degree atrioventricular block, the Ta wave can be observed and studied. Although atrial repolarization has been described in healthy subjects and in those with paroxysmal atrial fibrillation, it has not been studied in left ventricular dysfunction.</div></div><div><h3>Methods</h3><div>Patients with pacemaker implanted for third-degree AV block were studied. Group 1 included patients with normal ejection fraction (LVEF ≥55 %), and group 2 included patients with reduced ejection fraction (LVEF ≤40 %). Pacemakers were programmed to VVI pacing at 40 bpm, and six standard 12‑lead ECGs were recorded. P waves not followed by QRS complex for 500 ms were identified. PTa segments were extracted, averaged, and analyzed for duration, amplitude, axis and dispersion.</div></div><div><h3>Results</h3><div>Of 31 enrolled patients, 25 were included in the final analysis (13 in group 1, 12 in group 2). The mean PTa duration was 482 ± 36 ms and was not different between the groups. P wave duration, Ta amplitude, and Ta axis also were not different. Ta axis was northwest in all patients, opposite to the direction of atrial depolarisation. PTa dispersion was significantly higher in group 2 (74 ± 21 ms) compared to group 1 (54 ± 14 ms, <em>p</em> = 0.008).</div></div><div><h3>Conclusion</h3><div>PTa wave amplitude, duration, and axis are not altered in left ventricular dysfunction. PTa dispersion is increased in these patients and may be a marker of elevated risk for atrial arrhythmias.</div></div>","PeriodicalId":15606,"journal":{"name":"Journal of electrocardiology","volume":"94 ","pages":"Article 154160"},"PeriodicalIF":1.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682159","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}

引用次数: 0

Case report: Unusual focal atrial tachycardia from the left inferior pulmonary vein in a pediatric patient treated by high-power short duration catheter ablation 病例报告：一名儿童患者经高功率短时间导管消融治疗后出现左下肺静脉异常局灶性房性心动过速。

IF 1.2 4区医学

Journal of electrocardiology Pub Date : 2025-11-01 Epub Date: 2025-11-13 DOI: 10.1016/j.jelectrocard.2025.154156

Marta Telishevska MD, Sarah Lengauer MD, Meike Schwendt MD, Isabel Deisenhofer MD, Gabriele Hessling MD

引用次数: 0

The association between ST-segment depressions and sudden cardiac deaths and arrests after acute coronary syndrome 急性冠状动脉综合征后st段压低与心源性猝死和骤停之间的关系

IF 1.2 4区医学

Journal of electrocardiology Pub Date : 2025-11-01 Epub Date: 2025-10-11 DOI: 10.1016/j.jelectrocard.2025.154145

Konsta Kivimäki , Hanna Pohjantähti , Jussi Hernesniemi , Leo-Pekka Lyytikäinen , Juho Tynkkynen , Jani Rankinen

{"title":"The association between ST-segment depressions and sudden cardiac deaths and arrests after acute coronary syndrome","authors":"Konsta Kivimäki , Hanna Pohjantähti , Jussi Hernesniemi , Leo-Pekka Lyytikäinen , Juho Tynkkynen , Jani Rankinen","doi":"10.1016/j.jelectrocard.2025.154145","DOIUrl":"10.1016/j.jelectrocard.2025.154145","url":null,"abstract":"<div><h3>Aims of the study</h3><div>ST-segment depression in the electrocardiogram (ECG) of acute coronary syndrome (ACS) patients has been associated with higher mortality. But still, its association to sudden cardiac deaths (SCDs) or sudden cardiac arrests (SCAs) has not yet been investigated. We analyzed the association between ST-segment depression in the ECG after angiography and the long-term incidence of SCD and SCA among ACS patients.</div></div><div><h3>Methods</h3><div>Retrospective data of 8565 consecutive ACS patients with a median follow-up time of 7.1 years were analyzed retrospectively. Patients with (<em>n</em> = 1957) and without (<em>n</em> = 6608) ST-segment depression in ECG after angiography were compared after stratification according to the location of ST-segment depression. Incidents of SCDs and SCAs were adjudicated using various sources detailing the circumstances leading to the events. Subdistribution regression (Fine-Gray) models were used in the association analyses.</div></div><div><h3>Results</h3><div>Lateral, inferior, and inferolateral ST-segment depression were associated with the long-term risk for SCD and SCA in age- and sex-adjusted analyses (<em>p</em>-value <0.05). However, only lateral ST-segment depression was associated with a higher risk for SCD (HR 1.58, 95 % CI 1.13–2.20, <em>p</em>-value 0.007) and SCA (HR 1.48, 95 % CI 1.12–1.96, p-value 0.006) when additionally adjusted with several cardiovascular risk factors. The results remained significant in lateral and inferolateral ST-segment depression even after excluding patients with LVEF ≤35 % at baseline.</div></div><div><h3>Conclusion</h3><div>Lateral, inferolateral, and inferior ST-segment depressions in ECG after angiography in ACS patients are associated with a significantly higher long-term risk for SCD and SCA.</div></div>","PeriodicalId":15606,"journal":{"name":"Journal of electrocardiology","volume":"93 ","pages":"Article 154145"},"PeriodicalIF":1.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145308229","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}

引用次数: 0

Which leads were swaped? 哪些线索被交换了？

IF 1.2 4区医学

Journal of electrocardiology Pub Date : 2025-11-01 Epub Date: 2025-09-12 DOI: 10.1016/j.jelectrocard.2025.154124

José Nunes de Alencar , Odair Soares Filho

引用次数: 0

Narrow QRS tachycardia? What is the diagnosis? 窄QRS心动过速？诊断结果是什么？

IF 1.2 4区医学

Journal of electrocardiology Pub Date : 2025-11-01 Epub Date: 2025-10-08 DOI: 10.1016/j.jelectrocard.2025.154146

Victoria Fanucci B.S. , Utkarsh Kohli M.D

引用次数: 0

Two beats for one: A hidden fire in the conduction system 两拍一拍：传导系统有暗火。