Radiographic Signs of Lobar Collapse

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Lobar collapse is common in intubated ICU patients. Here is a an ICU One Pager on identifying which lobe is collapsed using just a CXR. Bonus: Teaches you how to get the most out of the PA and lateral too.

Author(s): Nick Mark, MD

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Attribution:   Title: “Radiographic Signs of Lobar Collapse”   Creator: “Nick Mark MD“  Source:OnePager ICU“   License: “CC BY-SA 3.0

Citation Example:   OnePagers: Mark NM, “Radiographic Signs of Lobar Collapse” Published 2020-03-19, OnePagerICU, URL: (accessed Date)