Application Effect of the Diazo Test on Determining the End Position During Blind Insertion of Nasoenteric Tubes
Objective To explore the effectiveness of the diazotization test for predicting the end position of blindly inserted nasoenteric tubes.Methods Convenience sampling method was employed to select 216 ICU patients who un-derwent blind insertion of nasoenteric tubes in the intensive care unit of a tertiary A hospital in Shandong Province from September 2021 to January 2022 as subjects.The terminal position of the nasoenteric tube was predicted by three methods:diazotization test,pH measurement,and observation of retracted fluid properties.The end position was con-firmed by X-ray radiography as the gold standard of determination.The accuracy,sensitivity,specificity,PPV,NPV,PLR,and NLR of the diazotization test and other methods were compared.Results The sensitivity,NPV and NLR of the pH measurement were 97.7％,84.0％and 0.045,respectively.The specificity,PPV,and PLR of retracted fluid prop-erty observation were 82.9％,95.5％,and 4.912,respectively.The diazotization test had an accuracy of 92.6％and the Kappa coefficient was 0.755.The largest area under the receiver operating characteristic curve was 0.870,95％CI(0.793,0.947).Conclusions The diazotization test shows high accuracy and consistency in determining the terminal position of blindly inserted nasoenteric tubes,demonstrating huge clinical predictive value.
万方数据
维普
