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Updated: Mar 25, 2026

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome ARDS
Published on: April 7, 2021
A simple respiratory severity score that may be used in evaluation of acute respiratory infection
Hector Rodriguez1, Tina V Hartert2, Tebeb Gebretsadik3
1Vanderbilt Center for Asthma Research, Vanderbilt University, 1215 21st Avenue South 6000, Medical Center East, North Tower, Nashville, TN, 37232-8300, USA. hrodriguezleusc@gmail.com.
Background:
Acute respiratory infections are ubiquitous and may have long-term implications on respiratory health. There are many scoring systems used to objectively measure severity of respiratory infections in clinical and research settings. A respiratory severity score derived exclusively from physical exam components (RSS-HR) was studied as an objective measure of disease severity and was compared to a previously described score that uses pulse oximetry as a component of its score (RSS-SO).
Findings:
A score was derived from 497 infants. The RSS-HR median score was higher in infants that were hospitalized (8.0) versus outpatient (4.0, p < 0.001), and those with lower respiratory tract infections (LRTI) (6.5) versus upper respiratory infections (URI) (1.0, p < 0.001). When discriminating upper versus LRTIs the concordance index of regression for RSS-HR was 0.91 and RSS-SO was 0.93.
Conclusions:
RSS-HR distinguishes disease severity based on level of care, as well as LRTI versus URI.
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