Journal
ULTRASOUND IN MEDICINE AND BIOLOGY
Volume 37, Issue 1, Pages 44-52Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ultrasmedbio.2010.10.004
Keywords
Diaphragmatic kinetics; Diaphragm motion; Right hemidiaphragm; Dyspnea; Clinical ultrasound; M-mode; Emergency ultrasound; Bedside ultrasound; Pulmonary function
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The purpose of this study was to set an effective standardized method to assess diaphragmatic kinetics by ultrasound. Forty healthy volunteers were submitted to a B- and M-mode ultrasound study using a convex transducer positioned in the subcostal anterior area for transverse scanning. Ultrasound examination was completed in 38/40 cases (95%), spending on average,10 min for examination. The resting and forced diaphragmatic excursions were 18.4 +/- 7.6 and 78.8 +/- 13.3 mm, respectively, unrelated to demographic or anthropometric parameters: intraobserver variability on three successive measurements resulted in 6.0% and in 3.9%, respectively. An inexperienced sonographer completed the ultrasound examination in 37/40 cases, spending on average >15 min, with significant, although marginal, interobserver variability (31.9% and 14.7% for resting and forced diaphragmatic excursion, respectively). Bedside ultrasonography by an anterior subcostal transverse scanning on semi-recumbent patient proves to be a safe, feasible, reliable, fast, relatively easy and reproducible way to assess diaphragm movement. (E-mail: americotesta@gmail.com) (C) 2011 World Federation for Ultrasound in Medicine & Biology.
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