Abstract
In recent years, several works have supported the significance of ultrasonography in the assessment of diaphragmatic function [1,2].
Highlights
When an operator performs a study of diaphragmatic function by ultrasonography, it is interesting to record the breathing cycle
In patients suffering from neuromuscular disease, the measurement of diaphragmatic excursion during forced breathing can predict an impairment in vital capacity [7]
The specifications of the device were initially determined: To improve the quality of the analysis of the diaphragmatic function by ultrasonography, it would be useful to record the beginning of inspiration and expiration on the screen of the ultrasound machine and to measure simultaneously the gas volume and the ultrasonographic parameters
Summary
When an operator performs a study of diaphragmatic function by ultrasonography, it is interesting to record the breathing cycle. Several works have supported the significance of ultrasonography in the assessment of diaphragmatic function [1,2]. The excursions of both hemidiaphragms can be measured by M-mode ultrasonography (US). In patients suffering from neuromuscular disease, the measurement of diaphragmatic excursion during forced breathing can predict an impairment in vital capacity [7]. Two-dimensional ultrasonography (B-mode US) makes it possible to measure diaphragmatic thickness at various breathing time such as the end of normal expiration (functional residual capacity), at the end of normal inspiration and at total pulmonary capacity [1]. Some studies have suggested that speckle tracking ultrasound (STI) was superior to conventional ultrasound techniques [10]
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