Unifocal Premature Ventricular Contractions/Unifocal Premature Atrial Contractions
Conditions
Interventions
Gold Standard:Clinicians' original diagnostic reports using standard 12-lead ECG machines
Index test:Hardware forward inference outputs of the approximate computing-based reconfigurable SoC chip for multi-type arrhythmia detection developed in this study
Sponsors
The affiliated people's hospital of Ningbo University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1.Confirmed by hospital ECG specialists, the clinical diagnosis is clear and includes one or both of the following: premature atrial contractions or premature ventricular contractions. 2.The ECG shows typical features: PACs present as ectopic P waves with morphology different from sinus P waves and incomplete compensatory pauses; PVCs present as premature wide QRS complexes (>=0.12s) with no preceding P wave and complete compensatory pauses. 3.The patient's underlying cardiac rhythm is sinus rhythm.
Exclusion criteria
Exclusion criteria: 1.Patients with implanted cardiac pacemakers, implantable cardioverter-defibrillators (ICDs), or other electronic implants (pacemaker pulse signals may interfere with the chip algorithm's extraction of R-waves and morphological features); 2.Patients in the acute phase of myocardial infarction, cardiogenic shock, or with severe cardiopulmonary failure requiring emergency resuscitation; 3.For patients with persistent, severe dyspnea or involuntary somatic tremors that render the standard 12-lead electrocardiographic baseline unstable (e.g., excessive baseline drift such that QRS complex morphology cannot be discerned). 4.For patients with comorbid arrhythmias such as atrial fibrillation, atrial flutter with rapid ventricular response, or second-degree type II (Mobitz II) or higher-degree atrioventricular block (arrhythmias that cause extreme irregularity of RR intervals or loss of P waves, thereby interfering with the algorithm's ability to localize and classify premature beats). 5.For patients with extensive chest skin lesions, inflammation, or severe allergy to electrode patches, precluding the proper wearing of wearable electrocardiographic patches.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Overall Accuracy of Arrhythmia Detection; | — |
Secondary
| Measure | Time frame |
|---|---|
| Specificity of Arrhythmia Detection;Sensitivity of Arrhythmia Detection; | — |
Countries
China
Contacts
Public ContactSheng Liufang
The affiliated people's hospital of Ningbo University
Outcome results
None listed