Comparison between two assessment methods for exercise-induced laryngeal obstructions
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Comparison between two assessment methods for exercise-induced laryngeal obstructions. / Norlander, Katarina; Christensen, Pernille Meyer; Maat, Robert C.; Halvorsen, Thomas; Heimdal, John Helge; Morén, Staffan; Rasmussen, Niels; Nordang, Leif.
In: European Archives of Oto-Rhino-Laryngology, Vol. 273, No. 2, 01.02.2016, p. 425-430.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Comparison between two assessment methods for exercise-induced laryngeal obstructions
AU - Norlander, Katarina
AU - Christensen, Pernille Meyer
AU - Maat, Robert C.
AU - Halvorsen, Thomas
AU - Heimdal, John Helge
AU - Morén, Staffan
AU - Rasmussen, Niels
AU - Nordang, Leif
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Exercise-induced laryngeal obstructions (E-ILOs) are important differential diagnoses to exercise-induced asthma and are diagnosed by the continuous laryngoscopy exercise (CLE) test. There are two different methods for evaluating the severity of E-ILOs using recordings from the CLE test; the CLE score and EILOMEA. The aim of this study was to investigate the consistency between these methods. Using their respective method, the developers of each method evaluated 60 laryngoscopic recordings from patients with different subtypes and various levels of severity of E-ILOs. The CLE score evaluates glottic and supraglottic obstructions on a 4-grade scale. EILOMEA uses software to calculate the obstruction severity on continuous scales from a still frame of the larynx during maximal obstruction giving three parameters reflecting glottic and supraglottic obstruction. The means of the EILOMEA measures differed significantly for CLE score 1 vs. 2 and 2 vs. 3, but not for 0 vs. 1 for glottic as well as supraglottic obstructions. The EILOMEA method does not distinguish between CLE score 0 and 1, but otherwise the methods correlate. Since previous studies have suggested that only CLE scores of 2 and 3 reflect a severity of E-ILOs of clinical importance, this lack of the EILOMEA method is not crucial for a correct medical evaluation.
AB - Exercise-induced laryngeal obstructions (E-ILOs) are important differential diagnoses to exercise-induced asthma and are diagnosed by the continuous laryngoscopy exercise (CLE) test. There are two different methods for evaluating the severity of E-ILOs using recordings from the CLE test; the CLE score and EILOMEA. The aim of this study was to investigate the consistency between these methods. Using their respective method, the developers of each method evaluated 60 laryngoscopic recordings from patients with different subtypes and various levels of severity of E-ILOs. The CLE score evaluates glottic and supraglottic obstructions on a 4-grade scale. EILOMEA uses software to calculate the obstruction severity on continuous scales from a still frame of the larynx during maximal obstruction giving three parameters reflecting glottic and supraglottic obstruction. The means of the EILOMEA measures differed significantly for CLE score 1 vs. 2 and 2 vs. 3, but not for 0 vs. 1 for glottic as well as supraglottic obstructions. The EILOMEA method does not distinguish between CLE score 0 and 1, but otherwise the methods correlate. Since previous studies have suggested that only CLE scores of 2 and 3 reflect a severity of E-ILOs of clinical importance, this lack of the EILOMEA method is not crucial for a correct medical evaluation.
KW - CLE score
KW - Continuous laryngoscopy exercise test
KW - E-ILO
KW - EILOMEA
KW - Exercise-induced respiratory difficulties
U2 - 10.1007/s00405-015-3758-7
DO - 10.1007/s00405-015-3758-7
M3 - Journal article
C2 - 26351037
AN - SCOPUS:84956678534
VL - 273
SP - 425
EP - 430
JO - Archiv fur klinische und experimentelle Ohren- Nasen- und Kehlkopfheilkunde
JF - Archiv fur klinische und experimentelle Ohren- Nasen- und Kehlkopfheilkunde
SN - 0942-8992
IS - 2
ER -
ID: 179041699