Document Detail

Validation of a mathematical model for ultrasound assessment of gastric volume by gastroscopic examination.
MedLine Citation:
PMID:  23302981     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: Pulmonary aspiration of gastric contents is a serious perioperative complication. Previous models of ultrasound gastric volume assessment are preliminary and have not been validated by an external "gold standard." In the present study we propose a more accurate model based on prospective data obtained from 108 patients undergoing bedside gastric sonography and upper gastrointestinal endoscopy (UGE).
METHODS: Patients undergoing elective UGE were randomized to ingest one of 6 predetermined volumes of apple juice after an 8-hour fasting period. A cross-sectional area of the antrum in the right lateral decubitus position (Right lat CSA) was measured by a blinded sonographer following a standardized scanning protocol. Gastric fluid was subsequently suctioned under gastroscopic vision during UGE performed by a blinded gastroenterologist and measured to the nearest milliliter.
RESULTS: Data from 108 patients suggest that a previously reported model tends to overestimate gastric volume particularly at low volume states. A new best fit mathematical model to predict gastric fluid volume based on measurements of Right lat CSA is presented. This new model built on a more accurate gold standard can be used to estimate gastric volumes from 0 to 500 mL, in nonpregnant adults with body mass index<40 kg/m2.
CONCLUSIONS: We report a new prediction model to assess gastric fluid volume using standard 2-dimentional bedside ultrasound that has several advantages over previously reported models.
Anahi Perlas; Nicholas Mitsakakis; Louis Liu; Maria Cino; Nidhi Haldipur; Liisa Davis; Javier Cubillos; Vincent Chan
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2013-01-09
Journal Detail:
Title:  Anesthesia and analgesia     Volume:  116     ISSN:  1526-7598     ISO Abbreviation:  Anesth. Analg.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-23     Completed Date:  2013-03-12     Revised Date:  2014-01-06    
Medline Journal Info:
Nlm Unique ID:  1310650     Medline TA:  Anesth Analg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  357-63     Citation Subset:  AIM; IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Aged, 80 and over
Anatomy, Cross-Sectional
Gastroscopy / methods*
Image Processing, Computer-Assisted
Middle Aged
Models, Statistical
Prospective Studies
Reproducibility of Results
Sample Size
Stomach / ultrasonography*
Supine Position
Young Adult
Comment In:
Anesth Analg. 2013 Dec;117(6):1509-10   [PMID:  24257406 ]
Anesth Analg. 2013 Dec;117(6):1508-9   [PMID:  24257405 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  CB1 and CB2 Cannabinoid Receptor Agonists Induce Peripheral Antinociception by Activation of the End...
Next Document:  Effects of Levobupivacaine on Wound Healing.