This project is a prospective observational study aimed to assess the use of non-invasive hemoglobin measurement in anticipating postpartum hemorrhage and predicting estimated blood loss. The non-invasive hemoglobin device is the Radical-7 Pulse CO-Oximeter which is a spectrophotometer manufactured by Masimo, Inc. Participants in the study will be undergoing a cesarean delivery at the George Washington University Hospital and during delivery the patient will wear the device on their fingertip so that hemoglobin measurements can be continuously recorded. No changes from routine medical management will occur during the study.
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Determine the critical threshold of SpHb drop during cesarean delivery
Timeframe: At the time of surgery
Correlation of the time a SpHb drop occurs with the time of hemorrhagic intervention decision
Timeframe: At the time of surgery