{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T12:38:14Z","timestamp":1770295094139,"version":"3.49.0"},"reference-count":15,"publisher":"S. Karger AG","issue":"2","license":[{"start":{"date-parts":[[2010,4,27]],"date-time":"2010-04-27T00:00:00Z","timestamp":1272326400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2010,4,27]],"date-time":"2010-04-27T00:00:00Z","timestamp":1272326400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Respiration"],"published-print":{"date-parts":[[2011]]},"abstract":"<i>Background:<\/i> Decannulation failure is usually due to tracheal obstruction. Prior to decannulation, inspection by the invasive procedure of bronchoscopy that permits morphological evaluation of a tracheal stenosis is standard practice. A non-invasive method enabling the quantification of the airway obstruction that requires little cooperation is measurement of the airway resistance by the forced oscillation technique. <i>Objectives:<\/i> The aim of the present study was to define oscillatory impedance thresholds which predict successful decannulation. <i>Methods:<\/i> A total of 131 patients were investigated prospectively. Step 1: Following probatory decannulation, measurement of the oscillatory impedance. Step 2: Blinded to the results of the impedance measurement, bronchoscopy-assisted decannulation attempt. The criteria for renewed cannulation were high-grade laryngeal or tracheal obstruction, dyspnea or stridor, or a drop in SaO<sub>2<\/sub> <90% under O<sub>2<\/sub> insufflation. Statistics: Determination of the ratio tracheal tube remains\/tracheal tube removed (TT+\/TT\u2013) for every measured value of the oscillatory resistance at 5 Hz (Ros 5 Hz). Determination of specificity and positive predictive value for determined threshold values with respect to TT\u2013. <i>Results:<\/i> The data of 126 patients were evaluated. TT+ n = 26, TT\u2013 n = 100. Decannulation on the basis of bronchoscopy criteria: Specificity and positive predictive value found out for Ros 5 Hz <0.35 kPa\/l\/s (n = 44) were 1.00 and 1.00, respectively, and for Ros 5 Hz <0.47 kPa\/l\/s (n = 71) 0.88 and 0.96, respectively. <i>Conclusions:<\/i> Measurement of the oscillatory airway resistance represents a practicable method prior to decannulation. Below a value of Ros 5 Hz <0.35 kPa\/l\/s, bronchoscopy would appear not to be necessary.<\/jats:p>","DOI":"10.1159\/000314073","type":"journal-article","created":{"date-parts":[[2010,4,28]],"date-time":"2010-04-28T06:58:42Z","timestamp":1272437922000},"page":"118-123","source":"Crossref","is-referenced-by-count":4,"title":["Removal of the Tracheal Tube after Prolonged Mechanical Ventilation: Assessment of Risk by Oscillatory Impedance"],"prefix":"10.1159","volume":"81","author":[{"given":"Karl-Josef","family":"Franke","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Georg","family":"Nilius","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefan","family":"Morgenstern","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karl-Heinz","family":"Ruhle","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2010,4,27]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1046%2Fj.1365-2044.1999.00667.x"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1378%2Fchest.104.1.136"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1097%2F00003246-199703000-00007"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1097%2F00000658-200008000-00014"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1378%2Fchest.115.4.1092"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1203%2F00006450-199101000-00016"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1378%2Fchest.122.1.206"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1097%2F01.CCM.0000065189.64560.A8"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1016%2FS0272-5231%2803%2900048-0"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1097%2F00005537-199707000-00006"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1034%2Fj.1399-3003.1999.13d32.x"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1378%2Fchest.109.6.1466"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1007%2Fs001340050794"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1378%2Fchest.119.4.1282"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1159%2F000114146"}],"container-title":["Respiration"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/314073","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/314073","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T19:17:21Z","timestamp":1745435841000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000314073"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,4,27]]},"references-count":15,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2011,2,1]]},"published-print":{"date-parts":[[2011,2,10]]}},"URL":"https:\/\/doi.org\/10.1159\/000314073","archive":["Portico"],"relation":{},"ISSN":["0025-7931","1423-0356"],"issn-type":[{"value":"0025-7931","type":"print"},{"value":"1423-0356","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,4,27]]}}}