Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Purpose: Phrenic nerve injury (PNI) is one of the important complications during cryoballoon (CB) ablation. Recording diaphragmatic compound motor action potentials (CMAPs) during CB ablation can predict PNI. CMAP monitoring may be inaccurate when CMAP amplitudes are low. We examined the effect of positioning an electrocardiography (ECG) electrode at the dorsal side.
Methods: We retrospectively analyzed the cases of 197 consecutive patients who underwent CB ablation for pulmonary vein isolation (PVI) (April 2016 to December 2018) at our institution. CMAP amplitudes were monitored using two recording methods just before cryoapplication. (a) Conventional method: right-arm ECG electrode positioned 5 cm above the xiphoid on the ventral side; left-arm ECG electrode positioned along the costal margin. (b) Our original method: right-arm electrode positioned 5 cm above the xiphoid on the dorsal side; left-arm electrode positioned along the costal margin.
Results: The CMAP amplitude during right phrenic nerve pacing was significantly higher at the dorsal side than the ventral side (0.80 ± 0.31 mV vs 0.66 ± 0.29 mV, < .01). Similarly, the CMAP amplitude during left phrenic nerve pacing was significantly higher at the dorsal side than the ventral side (0.92 ± 0.39 mV, 0.73 ± 0.37 mV, < .01). PNI occurred in six patients (3.0%); three patients experienced transient PNI, another three patients experienced persistent PNI, and none developed permanent PNI.
Conclusions: CMAP amplitudes were significantly high at the dorsal side compared to the ventral side. Monitoring phrenic nerve function using an ECG electrode at the dorsal side is a simple and easy procedure.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7132177 | PMC |
| http://dx.doi.org/10.1002/joa3.12314 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ictal Asystole in a Patient With DEE due to an FGF12 Pathogenic Variant: A Reminder to Monitor Cardiac Function.
Clin Genet
October 2025
Department of Neuropediatrics, CréER, ERN EpiCare, Strasbourg University Hospitals, Strasbourg, France.
We report the first known case of a 9-year-old male with early-onset epilepsy, syncope, and ictal asystole-requiring pacemaker implantation at the age of seven-associated with a pathogenic variant in FGF12.
View Article and Find Full Text PDFAssessment of heart rate measurements obtained from smartphone electrocardiography as compared to 24-h Holter monitoring in dogs with atrial fibrillation.
J Vet Cardiol
August 2025
Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, 736 Wilson Rd, East Lansing, MI 48824, USA. Electronic address:
Introduction/objectives: The aim of this study was to evaluate the ability of smartphone electrocardiogram (ECG) to estimate heart rate (HR) in dogs with atrial fibrillation (AF) and assess its agreement with the 24-h mean HR obtained from continuous ambulatory electrocardiography (Holter monitoring).
Animals, Materials And Methods: Eleven dogs were fitted with a Holter monitor, while owners recorded 5-min ECGs using smartphone application-based electrodes, both attached and manually placed. Recordings were analyzed for the application's QRS detection accuracy.
Respiratory monitoring and apnoea detection in paediatric and neonatal patients using a wearable accelerometer-based chest sensor: protocol for an observational diagnostic feasibility study.
BMJ Open
August 2025
Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children, Glasgow, UK.
Introduction: Accurate evaluation of respiratory rate and pattern is important in health and disease; however, it can be challenging in children and babies due to small size and poor tolerability of existing monitoring equipment. This protocol outlines a study evaluating the feasibility of collecting respiratory data using a chest-worn accelerometer-based motion sensor in paediatric patients at risk of apnoea, respiratory failure and sudden death.
Methods And Analysis: This is an observational feasibility study over a 2-year period.
Clinical and echocardiographic outcomes of sync-atrioventricular versus nominal optimization in correlation with QRS narrowing among CRT patients.
BMC Cardiovasc Disord
August 2025
Department of Cardiology, Faculty of medicine, Aswan university, Aswan, Egypt.
Background: Cardiac resynchronization therapy (CRT) has been established as a key component in the management of patients with heart failure (HF) with reduced ejection fraction in addition to pharmacologic therapy. Several automatic algorithms have been developed to optimize the timing cycle settings in CRT, especially AV delay which was associated with improvement of the response to CRT. The present study aims to investigate whether the novel device-based SyncAV algorithm could elicit better synchrony and acute hemodynamic response.
View Article and Find Full Text PDFImplementation of lead V8 as a simple non-invasive tool to improve patient selection in CRT and guide LV lead placement.
Europace
August 2025
Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands.
Background And Aims: CRT improves outcomes in heart failure patients with electrical dyssynchrony. The QLV interval, a marker of delayed left ventricular (LV) activation, independently predicts CRT response. This study aimed to determine whether activation time measured in surface ECG lead V8 reflects postero-lateral LV delay by correlating with the QLV interval during biventricular (BiV) CRT implantation.
View Article and Find Full Text PDF