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Volume 127, booklet 1
July 2017
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Competing interests
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References
Correspondence| July 2017
Olivier Moreault, MD;
Yves Lacasse, MD, FRCPC;
Jean S. Bussières, MD, FRCPC
Quebec University Institute of Cardiology and Pneumology - Laval University, Quebec City, Quebec, Canada (JSB).jbuss@criucpq.ulaval.ca
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Quebec University Institute of Cardiology and Pneumology - Laval University, Quebec City, Quebec, Canada (JSB).jbuss@criucpq.ulaval.ca
(Accepted for publication on April 8, 2017.)
AnesthesiologyJuly 2017, binding. 127, 203-204.
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Olivier Moreault,Yves Lacasse,Jean S. Bussières; Calculating ideal body weight: keep it simple.Anesthesiology2017; 127: 203–204 doi:https://doi.org/10.1097/ALN.0000000000001687
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To the editor:
We read with great interest the main article on protective ventilation by Hedenstierna and Edmark in the December issue of Abeauticians.1We agree with most of the ideas put forward. However, as thoracic anesthesiologists we strongly believe in the importance of a low tidal volume based on ideal body weight during single-lung ventilation.2,3
Many authors still recommend using the gender-specific formulas of the Acute Respiratory Distress Syndrome Network (ARDSnet) to calculate ideal body weight.4The ideal body weight is calculated for men as 50+ (0.91 × [height in centimeters - 152.4]) and for women as 45.5+ (0.91 × [height in centimeters - 152.4]). A simple alternative would be to calculate ideal body weight as the weight corresponding to an ideal body mass index of 22 kg/m22. The ideal body weight is then simply calculated as 22 × ([the patient's actual height in meters]^2) or using the body mass index charts available on our anesthesia cart.5We chose 22 kg/m2as the ideal body mass index after comparing the ideal body weight corresponding to the body mass index of 20 to 25 with the ideal body weight calculated from ADRSnet formulas. For example, a 1.75 m man would have an ideal body weight of 67 kg (22 × [1.75^2]) compared to 71 kg using ARDSnet; a 1.60 m female would have an ideal body weight of 56 kg (22 × [1.60^2]) compared to 52 kg with ARDSnet.
The method we propose is simple and easy to remember. The same calculation applies to both men and women and involves simple arithmetic.
Competing interests
The authors declare no competing interests.
References
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The pagan paths G Edmark L
Protective ventilation during anesthesia: does it make sense?
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Armband KL Lohser J Rotary F Bussieres JS
Step-by-step clinical management of single-lung ventilation: continuing professional development.
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Lohser J Slinger P
Lung injury after single-lung ventilation: a review of the pathophysiological mechanisms affecting the ventilated and collapsed lung.
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Ventilation with lower tidal volumes compared to traditional tidal volumes in acute lung injury and acute respiratory distress syndrome.
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Meerault O Lacasse Y Bussieres J
Body mass index-diagram
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Available at:http://bit.ly/2ikOtch. Accessed March 31, 2017
Copyright © 2017, American Society of Anesthesiologists, Inc. Wolters Kluwer Health, Inc.
2017
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