Lodox reveals the ideal body
Lara Nicole Goldstein, Sameer Carim
The Pan African Medical Journal. ;27:195. doi:10.11604/pamj..27.195.12822

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Images in clinical medicine

Lodox reveals the ideal body

Lara Nicole Goldstein, Sameer Carim
Pan Afr Med J. 2017; 27:195. doi:10.11604/pamj.2017.27.195.12822. Published 13 Jul 2017

A 110 kg patient presented to the hospital emergency department after being involved in a motor vehicle collision. A full body LODOX® (low-dose digital x-ray) was performed as part of the primary survey. The patient was subsequently intubated for airway protection. The utilisation of lower tidal volumes for ventilation of patients came to the fore with the ARDSNET publication. Despite the now well-known risks of ventilator-associated lung injury, patients with higher body mass indices who require ventilation in the emergency department are at increased risk of receiving inappropriately high tidal volumes. This Lodox image highlights that even though the patient's actual body weight was 110 kg and body mass index greater than 40, the lung size was equivalent to that of a 65 kg person. In addition, obesity can result in reduced lung volumes as well as reduced lung and chest wall compliance. This is exacerbated by the weight of the adipose leading to an increase in the work of breathing. It is a good reminder that in order to avoid deleterious, iatrogenic lung injury, we need to ventilate obese patients with tidal volumes scaled to their ideal body weight and mitigate the decreased chest wall compliance by considering starting with higher PEEP levels.

Corresponding author:
Lara Nicole Goldstein, MBBCh, MMed (Emergency Medicine), Division of Emergency Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa

©Lara Nicole Goldstein et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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