Timothy N. Liesching

Timothy N. Liesching, MD, FCCP, is a leader in the field of pulmonary and critical care medicine and is currently the chairman of the Division of Pulmonary and Critical Care Medicine at Lahey Hospital & Medical Center, Burlington, Massachusetts, where he has practiced for the past 12 years. He is also associate professor at Tufts University School of Medicine. He has been awarded many times over for his contributions as a teacher and has published numerous original research articles.

The ABC's of ABG's ™

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Robert F. Moran and Timothy N. Liesching

When a patient is brought into a trauma center in extremis, or becomes that way during a hospital stay, the intervention mantra is airway, breathing and circulation—the ABC’s. We provide the nonspecialist physician, and those in the participating and supporting professions, a quick overview of the meaning of the testing terms in this environment. Many tests, added singly or in small groups over time as clinical and measurement technology evolved, but whose rationale may have become less clear, are defined and explained.