TY - JOUR T1 - Reliability of ultrasound gastric volume assessment for the prevention of aspiration pneumonia JF - European Respiratory Journal JO - Eur Respir J VL - 42 IS - Suppl 57 SP - P2270 AU - Anahi Perlas AU - Liisa Davis AU - Cyrus Tse Y1 - 2013/09/01 UR - http://erj.ersjournals.com/content/42/Suppl_57/P2270.abstract N2 - We have developed and validated a mathematical model (Volume = 27 + 14.6 x Right-lat CSA - 1.28 age) that accurately predicts gastric fluid volume based on a cross-sectional area of the gastric antrum obtained with 2D ultrasound in the right lateral decubitus position (Right-lat CSA).An accurate assessment of gastric volume can help tailor anesthetic or airway management to prevent aspiration penumonia in intensive care or anesthetic practice. We hypothesize that ultrasound gastric volume assessment has substantial intra-rater and inter-rater reliability (intraclass correlation coefficient > 0.6). We hereby present interim data (n=8) from a prospective, randomized, blinded study (final n=24). Three blinded raters perfomed bedside ultrasound assessment for determination of gastric fluid volume on subjects randomized to ingest 0 to 400 mL of apple juice in 100 mL intervals after an 8 hour fasting period. A standardized scanning protocol was used. The procedure was repeated after 24 hours on the same subjects for determination of intra-rater reliability. Preliminary results suggest there is sustantial intra-rater reliability (ICC = 0.75) and almost perfect inter-rater reliability (ICC = 0.84). In conlcusion, our preliminary results suggest that bedside sonographic assessment of gastric volume has substantial to almost perfect reliability. ER -