Critically ill pregnant and postpartum women can be found in almost all practice groups, birth centers and hospitals. Maternal assessment, stabilization and rescue are the primary goals of triage and early treatment independent of patient location. Therefore, care providers such as obstetric nurses, certified nurse-midwives, advanced practice nurses and physicians should become acquainted with stabilization algorithms, advanced cardiopulmonary assessment modalities, and maternal rescue protocols. This workshop uses interactive case studies to assist in development and/or strengthening of an evidence-based approach to maternal stabilization and treatment. Participants will learn methods to evaluate multi-system function and/or failure using laboratory tests and both non-invasive and invasive hemodynamic and oxygen transport data. Experience with critically ill or extremely high-risk obstetric patients is desirable but not mandatory.