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Complications including posterior tracheal wall perforation, accidental vessel puncture, and missed tracheal puncture are reported. Therefore, we proposed a dual-wavelength fiber-optic technique based on the technique of near-infrared spectroscopy to assist operators performing needle cricothyroidotomy in a swine model. We embedded optical fibers in a 16-gauge intravenous needle catheter. Real-time data were displayed on an oscilloscope, and we used the program to analyze the data immediately. The change of optical density corresponding to 690-nm and 850-nm wavelengths and hemoglobin parameters (HbO<jats:sub>2<\/jats:sub> and Hb concentrations) was analyzed immediately using the program in the laptop. Unique and significant optical differences were presented in this experiment. We could easily identify every different tissue by the change of optical density corresponding to 690-nm and 850-nm wavelengths and hemoglobin parameters (HbO<jats:sub>2<\/jats:sub> and Hb concentrations). Statistical method (Kruskal-Wallis <jats:italic>H<\/jats:italic> test) was used to compare differences in tissues at each time-point, respectively. The <jats:italic>p<\/jats:italic> values in every tissue in optical density change corresponding to 690\u00a0nm and 850\u00a0nm were all &lt;\u20090.001. Furthermore, the <jats:italic>p<\/jats:italic> values in every tissue in Hb and HbO<jats:sub>2<\/jats:sub> were also all &lt;\u20090.001. The results were statistically significant. This is the first and novel study to introduce a dual-wavelength embedded fibers into a standard cricothyroidotomy needle. This proposed system might be helpful to provide us real-time information of the advanced needle tip to decrease possible complications.<\/jats:p>","DOI":"10.1007\/s10103-020-03065-4","type":"journal-article","created":{"date-parts":[[2020,7,23]],"date-time":"2020-07-23T01:02:45Z","timestamp":1595466165000},"page":"571-582","update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Dual-wavelength fiber-optic technique to assist needle cricothyroidotomy"],"prefix":"10.1007","volume":"36","author":[{"given":"Chien-Ching","family":"Lee","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chia-Chun","family":"Chuang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bo-Cheng","family":"Lai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chin-Li","family":"Lu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edmund Cheung","family":"So","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bor-Shyh","family":"Lin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,7,23]]},"reference":[{"issue":"2","key":"3065_CR1","doi-asserted-by":"publisher","first-page":"251","DOI":"10.1097\/ALN.0b013e31827773b2","volume":"118","author":"JL Apfelbaum","year":"2013","unstructured":"Apfelbaum JL, Hagberg CA, Caplan RA, Blitt CD, Connis RT, Nickinovich DG, Hagberg CA, Caplan RA, Benumof JL, Berry FA, Blitt CD, Bode RH, Cheney FW, Connis RT, Guidry OF, Nickinovich DG, Ovassapian A, American Society of Anesthesiologists Task Force on Management of the Difficult A (2013) Practice guidelines for management of the difficult airway: an updated report by the American Society of Anesthesiologists Task Force on Management of the Difficult Airway. 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