Coronary angioplasty (CA) is a surgical procedure meant to break the plaque and restore the blood flow in obstructed coronary arteries. It is based on inserting an inflatable balloon with a catheter in the clogged artery. When the balloon inflation is prolonged, it also provides an excellent model to investigate the electrophysiological changes due to early ischemia. In this work, we tested whether early cardiac ischemia induced by prolonged balloon inflations might lead to changes in spatial heterogeneity of ventricular repolarization (SHVR), as measured by the V-index on the 12-lead ECG. The metric was recently shown to significantly improve the ECG sensitivity for the diagnosis of non-ST elevation myocardial infarction, in patients presenting to the emergency department. The analysis was retrospectively performed on the data of 104 patients who underwent prolonged CA (STAFF III dataset). The V-index was estimated before, during and post-occlusion (limiting the analysis to the first inflation). Successively, it was quantified on short 90 s overlapping windows, during occlusion, to assess the time evolution of SHVR. V-index values estimated during occlusion were significantly larger (median: 6.2 ms, p < 0.05) than baseline room values. Also, pre- and post-occlusion values did not differ (p > 0.05), suggesting a complete recovery after CA. SHVR progressively increased during the occlusion with respect to baseline (median reaching 55.6 ms vs 34.2 ms). In conclusion, the V-index detected changes in SHVR due to early-stage cardiac ischemia.
Quantification of Spatial Heterogeneity of Ventricular Repolarization During Early-Stage Cardiac Ischemia Induced by Coronary Angioplasty / M.W. Rivolta, F. Rocchetta, L.T. Mainardi, F. Lombardi, R. Sassi (PROCEEDINGS OF THE ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY). - In: 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)[s.l] : IEEE, 2019. - ISBN 9781538613115. - pp. 4250-4253 (( Intervento presentato al 41. convegno Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) tenutosi a Berlin nel 2019.
|Titolo:||Quantification of Spatial Heterogeneity of Ventricular Repolarization During Early-Stage Cardiac Ischemia Induced by Coronary Angioplasty|
|Settore Scientifico Disciplinare:||Settore INF/01 - Informatica|
Settore ING-INF/06 - Bioingegneria Elettronica e Informatica
|Data di pubblicazione:||2019|
|Enti collegati al convegno:||IEEE|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1109/EMBC.2019.8857677|
|Tipologia:||Book Part (author)|
|Appare nelle tipologie:||03 - Contributo in volume|