ArticleEuropean heart journal. Case reports2025
Inadvertent temporary transvenous pacing of the left ventricle: an underreported complication-a case report.
Article in European heart journal. Case reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Inadvertent temporary transvenous pacing (TTVP) of left ventricle (LV) is rare and likely underreported, posing significant embolic risk. We present a case of TTVP with atypical trajectory identified on computed tomography (CT) imaging. Summary: A 62-year-old male with metastatic renal cell carcinoma on chemotherapy and bifascicular block presented with symptomatic bradycardia and non-ST-elevation myocardial infarction (NSTEMI), raising concerns for complete heart block on ECG. Intermittent asystole occurred during TTVP placement with appropriate capture. Post-procedure, ECG showed ventricular-paced rhythm with pseudo-right bundle branch block, and chest X-ray suggested lead placement in right ventricle; however, suboptimal echocardiography limited lead visualization. Coronary angiography revealed non-obstructive coronary artery disease. Positron emission tomography-computed tomography (PET-CT), performed to evaluate immune checkpoint inhibitor myocarditis, incidentally noted TTVP wire entering right subclavian artery and traversing to LV. Patient underwent TTVP removal, endovascular repair, and pacemaker implantation; however, course was unfortunately complicated by embolic stroke and haemorrhagic conversion. Discussion: Early detection and management of lead malposition remain critical to minimizing complications. Management strategies for inadvertent lead malposition (ILM) depend on duration of implantation, clinical presentation, and associated risks. This case highlights importance of recognizing this high-risk complication, preventive strategies, and evidence-based management. While existing data primarily focus on ILM in permanent devices, further research is needed to elucidate incidence, predictors, and outcomes of ILM in TTVP, particularly in resource-limited settings.
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