MIMIC-III-Ext-PPG: A PPG Benchmark Dataset for Cardiorespiratory Analysis

MIMIC-III-Ext-PPG is a large-scale, annotated, and quality-assessed dataset of
photoplethysmogram (PPG) segments extracted from the MIMIC-III Waveform
Database Matched Subset. It contains around 6.3 million non-overlapping
30-second segments from 6,189 critically-ill patients and serves as the
largest public resource for heart rhythm classification. The dataset contains
signals recorded during several heart rhythms: sinus rhythm, atrial
fibrillation, atrial flutter, heart block, pacing, and several less common
rhythms. PPG segments were extracted within the 15-minute period prior to a
patient's heart rhythm being recorded in the medical record, providing
reference rhythm annotations in line with best practice from the literature.
In addition, simultaneous electrocardiogram (ECG, lead II), arterial blood
pressure (ABP), and respiratory (RESP) signals are provided where available.
Additional annotations were derived from these signals, including blood
pressure, heart rate, and respiratory rate. Signal quality metrics are
provided for all signals. The MIMIC-III-Ext-PPG dataset is a valuable resource
for a variety of downstream prediction tasks, enabled by its size, range of
reference annotations, and signal quality metrics.