Measurement of Individual Alteration in Perioperative ECGs During Elective Percutaneous Coronary Intervention
The increasing availability of wearable electrocardiography (ECG) devices enables the continuous monitoring of individual ECG alterations. This could be beneficial for patients suffering from acute ischemia but with non-standard ECG findings that do not fit to the subject-independent and absolute th...
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Zusammenfassung: | The increasing availability of wearable electrocardiography (ECG) devices
enables the continuous monitoring of individual ECG alterations. This could be
beneficial for patients suffering from acute ischemia but with non-standard ECG
findings that do not fit to the subject-independent and absolute thresholds
defined in clinical guidelines. In this work, we evaluate the inter-patient
magnitude of individual ECG alterations during ischemia. The freely available
STAFF III database provides 12-lead ECG recordings of patients before, during,
and after elective percutaneous coronary intervention(PCI), where a coronary
vessel is widened with a balloon inflation. We compute individual alterations
of ST-interval and T-wave amplitudes w.r.t. QRS amplitude over time for each
patient and lead. We demonstrate that determining relative ST-interval/T-wave
amplitudes and deriving individual alterations over time is feasible in
standard and non-standard ECG recordings. To demonstrate clinical relevance, we
use the features for differentiating N=54 STAFF III patients with
atherosclerotic plaque in either the right coronary artery (RCA) or left
ascending artery (LAD). Results show significant differences in 5 leads for
ST-interval alterations and 3 leads for T-wave alterations, which are also
suggested by clinical guidelines for ischemia detection. Clinical relevance-
Assessing individual alterations over time could eventually close the gap in
ECG evaluation of patients presenting with pre-existing heart conditions and
non-standard ECGs. |
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DOI: | 10.48550/arxiv.2302.05177 |