A randomized controlled trial in Nigeria showed that the Eko DUO Digital Stethoscope significantly improved the detection of peripartum cardiomyopathy, a dangerous form of pregnancy-related heart failure. The AI-enabled, single-lead ECG DUO Stethoscope helped doctors identify twice as many cases of left ventricular systolic dysfunction (LVSD) compared to standard obstetric care. Involving nearly 1,200 women, the trial found that AI-guided screening was 12 times more likely to detect heart pump weakness at a critical threshold (left ventricular ejection fraction ≤45%) for peripartum cardiomyopathy. This research underscores the importance of early detection and suggests that AI-guided digital stethoscope screening could enhance diagnosis.