It is important to recognize excessive blood loss during childbirth, which is a significant cause of morbidity and mortality. This article reviews methods to measure blood loss that could be used during childbirth. PubMed, CINAHL, and MEDLINE databases were searched using the phrases "blood loss" and "measurement." The bibliographies of publications were scanned for applicable references. A total of 46 publications are included in this review. The methods used to measure blood loss are categorized into visual estimation, direct measurement, gravimetric, photometry, and miscellaneous. Methods are described and compared. A combination of direct measurement and gravimetric methods are the most practical. Photometry is the most precise, but also the most expensive and complex to use. A variety of miscellaneous methods are presented, but none is a practical or reliable method. Visual estimation of blood loss is so inaccurate that its continued use in practice is questionable and it should not be used in research to evaluate treatment.

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There is a strong commitment from preceptors to give back to the profession through the teaching of the future generation of midwives. Many of the barriers to precepting could be addressed by ACNM, the Accreditation Commission for Midwifery Education, and individual midwifery education programs.

These findings suggest that low rates of cesarean in birth centers are not attributable to labor setting alone. The entire birth center care model, including prenatal preparation and relationship-based midwifery care, should be studied, promoted, and implemented by policy makers interested in achieving appropriate cesarean rates in the United States.

Determination of how, and under what conditions, clinicians decide when to use particular techniques to manage the third stage of labor and how these techniques influence the incidence of postpartum hemorrhage, is necessary. The clusters of practice combinations that emerged in this study suggest that there are extreme variations in clinician practices during management of the third stage of labor.