alexa Electrical Activity of the Diaphragm During Reverse Triggering - A Case Report | OMICS International | Abstract
ISSN: 2165-7920

Journal of Clinical Case Reports
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Case Report

Electrical Activity of the Diaphragm During Reverse Triggering - A Case Report

Yoshitoyo Ueno1, Taiga Itagaki2, Mutsuo Onodera2 and Masaji Nishimura2*

1Department of Critical Care and Emergency Medicine, Tokushima University Hospital, Kuramoto, Tokushima, Japan

2Department of Critical Care and Emergency Medicine, Tokushima University, Graduate School of Biomedical Sciences, Kuramoto, Tokushima, Japan

*Corresponding Author:
Masaji Nishimura
Department of Critical Care and Emergency Medicine
Tokushima University, Graduate School of Biomedical Sciences
3-18-15 Kuramoto, Tokushima, 770-8503, Japan
Tel: 81-88-633-9425
Fax: 81-88-633-9445
E-mail: [email protected]

Received Date: May 28, 2017; Accepted Date: June 16, 2017; Published Date: June 19, 2017

Citation: Ueno Y, Itagaki T, Onodera M, Nishimura M (2017) Electrical Activity of the Diaphragm During Reverse Triggering - A Case Report. J Clin Case Rep 7:978. doi: 10.4172/2165-7920.1000978

Copyright: © 2017 Ueno Y, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Reverse triggering is defined as diaphragmatic muscle contraction triggered by mandatory breath of ventilator. Reverse triggering induced double cycling and large tidal volume (VT) in Pressure Control Ventilation (PCV).

An 81-year-old male was admitted to the ICU after tricuspid valve plasty. A close observation of graphic monitor showed a deflection of pressure waveform in the middle of mandatory breath. Electric activity of the diaphragm (EAdi) revealed diaphragmatic contraction following mandatory breath. When diaphragmatic contraction started at the end of mandatory breath it induced double-cycling. When it started at the middle of mandatory breath VT increased. As spontaneous breathing increased, reverse triggering disappeared. While the consequences of reverse triggering are under discussion, in our case it led double cycling and large VT, and it might be injurious. We should recognize it is more common than expected.

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