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 4.9 million non-overlapping 30-second
segments from 6,131 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. Furthermore, a dedicated pipeline was applied to remove mislabeled
signals, which, to the best of our knowledge, have previously gone unnoticed.
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.