Atelectasis laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sudarshana Datta, MD [2]

Overview

Patients with atelectasis have hypoxemia with low levels of PaO2 and normal/low PaCO2 levels on ABG analysis. Raised peak and end-inspiratory plateau pressures due to decreased lung compliance are also present in these patients.

Laboratory Findings

• Laboratory findings consistent with the diagnosis of atelectasis include:
  • Hypoxemia with low levels of PaO2 on aterial blood gas analysis
  • Normal/low PaCO2 levels on arterial blood gas analysis
  • Raised peak and end-inspiratory plateau pressures due to decreased lung compliance