News from LSU Health Shreveport

Tidal Volume Monitor

A Tidal Volume Monitor project spearheaded by the LSUHS Device Group is working to increase the safety and efficacy of emergency ventilation. This collaborative effort was undertaken by Steve Alexander, PhD, Professor of Molecular and Cellular Physiology; Steven Conrad, MD, PhD, MS, MSE, MBA, MSST, MSc, Professor of Medicine, Emergency Medicine, Pediatrics, and Anesthesiology; Ike Muslow Endowed Chair; Giovanni Solitro, PhD, Assistant Professor of Orthopaedic Surgery; and two medical students, Mr. Luke White (MD/PhD candidate) and Mr. Ben Maxey (MD candidate). The DEVICE group produced a simple, inexpensive metronomic flow monitor that provides immediate feedback on a hand-powered ventilation with the purpose of improving oxygenation.

Manual ventilation is a basic skill that involves airway assessment, maneuvers to open the airway, and application of simple and complex airway support devices and effective positive-pressure ventilation using a bag and mask. A bag valve mask, sometimes known by the proprietary name Ambu bag or generically as a manual resuscitator or “self-inflating bag”, is a hand-held device commonly used to provide positive pressure ventilation to patients who are not breathing or not breathing adequately.

The Tidal Volume Monitor was created for use in ICUs and other emergency scenarios, public clinics, ambulances and nursing homes where hand ventilation may be done frequently, but incorrectly. Poor ventilation may lead to under oxygenation and over-bagging can cause lung injury.

This device developed by LSUHS scientists and researchers uses a series of sounds and lights to rapidly ‘train’ operators and emergency responders to more accurately administer hand respiration support for patients that are in transit to a more sophisticated ventilator. The device also prevents injury and ensures that patient does not sustain lung damage from improper use of the flow monitor. This is the latest device from the LSUHS DEVICE group.

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