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Table of Contents
LETTER TO EDITOR
Year : 2012  |  Volume : 28  |  Issue : 2  |  Page : 281

A modified ambu resuscitator which detects and measures spontaneous breathing


1 Chemistry, Chemical Biology, and Biomedical Engineering Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, USA
2 Chemistry, Chemical Biology, and Biomedical Engineering Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken; Department of Anesthesiology, University of Medicine and Dentistry of New Jersey, Newark, USA

Date of Web Publication11-Apr-2012

Correspondence Address:
Glen M Atlas
Department of Anesthesiology, University of Medicine and Dentistry of New Jersey, 185 S. Orange Ave. MSB E-538, Newark, NJ 07103
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-9185.94936

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How to cite this article:
Capelli J, Ferlo N, Foley A, Smith V, Hazelwood V, Atlas GM. A modified ambu resuscitator which detects and measures spontaneous breathing. J Anaesthesiol Clin Pharmacol 2012;28:281

How to cite this URL:
Capelli J, Ferlo N, Foley A, Smith V, Hazelwood V, Atlas GM. A modified ambu resuscitator which detects and measures spontaneous breathing. J Anaesthesiol Clin Pharmacol [serial online] 2012 [cited 2020 Aug 12];28:281. Available from: http://www.joacp.org/text.asp?2012/28/2/281/94936

Sir,

The traditional ambu resuscitator (AR) is constructed with a semirigid self-inflating reservoir bag, which allows for hand ventilation of patients. This device is utilized with either a tight-fitting face mask or a tracheal tube. However, the AR does not allow for detection of a patient's spontaneous ventilation. Other "portable" anesthesia circuits, such as the Mapleson D or Jackson-Reese, allow for the detection of a patient's spontaneous breathing by making use of collapsible reservoir bags. [1]

The principle advantage, of the AR, is that it can provide room air in the event that oxygen is not available. Whereas those systems, which utilize collapsible bags, will not allow for the entrainment of room air should their associated oxygen supplies fail.

A typical AR has been modified by incorporating an incentive spirometer. This allows for the detection and volume assessment of a patient's spontaneous breathing and is illustrated in the accompanying [Figure 1]. This early-stage prototype has been developed by a modification of the positive end-expiratory pressure (PEEP) valve connector located within the AR. Furthermore, the incorporation of the incentive spirometer does not interfere with the entrainment of room air in the event of an oxygen supply failure.
Figure 1: An ambu resuscitator has been prototypically modified by incorporating an incentive spirometer, which assists in the detection of spontaneous respiration

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Additional development of this device would continue to allow for a cost-effective means of assessing spontaneous ventilation while preserving the established clinical safety of the AR. Ultimately, an improved AR would allow for the measurement of minute ventilation, spontaneous ventilation, and possibly detect an oxygen disconnect. [2]

 
  References Top

1.McIntyre JW. Anaesthesia breathing circuits. Can Anaesth Soc J 1986;33:98-105.  Back to cited text no. 1
[PUBMED]    
2.Atlas G. A method to quickly estimate remaining time for an oxygen E-cylinder. Anesth Analg 2004;98:1190.  Back to cited text no. 2
[PUBMED]  [FULLTEXT]  


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