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Postpartum hemorrhage (PPH) is the leading cause of maternal death worldwide (35%), where early detection can significantly reduce mortality risk. State-of-the-art techniques for detecting PPH rely on vital sign monitoring and visually inspecting sanitary pads. However, visual inspection of pads is error-prone and deterioration in vital signs are late indicators of PPH.

Proposed Healthcare Solution

Vasowatch assesses risk for postpartum hemorrhage (PPH) accurately and consistently, enabling improved obstetric outcomes for all mothers. Their non-invasive wearable device continuously monitors optical data during labor and delivery to objectively assess the mother's current PPH risk, communicating a change to the clinical care team. The device enables the team to prepare for and provide prompt, appropriate PPH treatment, saving lives and minimizing costly complications.

Development Stage

Proof of Concept

Funding Cycle



James Weimer, PhD​​​
Department of Computer and Information Science

Stefanie Modri MSN, RN, C-MNN
School of Nursing

Kimberly Trout, PhD, CNM, FACNM, FAAN
School of Nursing

Maggie Power, CNM, MSN
School of Nursing


For more information on this technology, please contact Penn Center for Innovation at pciinfo@pci.upenn.edu