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Related Experiment Video

Updated: Aug 22, 2025

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia

Published on: June 28, 2018

Development and implementation of an aspiration pneumonia cause investigation algorithm.

Yuki Yoshimatsu^1,2, Kazunori Tobino^1,3, Omar Ortega^4,5

¹Department of Respiratory Medicine, Iizuka Hospital, Fukuoka, Japan.

The Clinical Respiratory Journal

|November 14, 2022

Summary

An algorithm based on Japanese Respiratory Society Guidelines improved aspiration pneumonia diagnosis and management by increasing swallowing disorder screening and identifying risk factors in older patients.

Keywords:

cause deglutition diagnosis dysphagia screening

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Area of Science:

Medicine
Pulmonology
Geriatrics

Background:

Aspiration pneumonia is underdiagnosed due to lack of established diagnostic criteria.
Effective management requires thorough diagnosis and investigation of underlying causes.
The Japanese Respiratory Society (JRS) Guidelines provide risk factors for aspiration pneumonia.

Purpose of the Study:

To develop and implement an algorithm for evaluating aspiration pneumonia risk factors.
To guide physicians in managing patients with suspected aspiration pneumonia.
To improve early detection and preventative measures for aspiration pneumonia.

Main Methods:

Developed an algorithm based on the JRS Guidelines for aspiration pneumonia risk factors.
Implemented the algorithm in an acute care hospital setting for older patients with pneumonia.
Compared outcomes of patients managed with the algorithm (n=40) against a historical control group (n=44).

Main Results:

The algorithm group showed significantly higher rates of early swallowing disorder screening (95.0% vs. 15.9%, p<0.01).
Two new cases of aspiration pneumonia were diagnosed in the algorithm group, versus none in the control group.
Potentially aspirating medications were discontinued more frequently in the algorithm group (27.5% vs. 4.5%).

Conclusions:

The developed algorithm effectively translates JRS guidelines into clinical practice for aspiration pneumonia.
Implementation of the algorithm enhanced swallowing screening and preventative strategies.
The algorithm aids in identifying underlying causes and optimizing management for aspiration pneumonia.