Clinical responses following inspiratory muscle training in exercise-induced laryngeal obstruction.
Eur Arch Otorhinolaryngol
; 279(5): 2511-2522, 2022 May.
Article
en En
| MEDLINE
| ID: mdl-34954812
PURPOSE: Exercise-induced laryngeal obstruction (EILO) is relatively common in young people. Treatment rests on poor evidence; however, inspiratory muscle training (IMT) has been proposed a promising strategy. We aimed to assess laryngeal outcomes shortly after IMT, and to compare self-reported symptoms with a control group 4-6 years later. METHODS: Two groups were retrospectively identified from the EILO-register at Haukeland University Hospital, Norway; one group had received only information and breathing advice (IBA), and another additionally IMT (IBA + IMT). At diagnosis, all participants performed continuous laryngoscopy during exercise (CLE), with findings split by glottic and supraglottic scores, and completed a questionnaire mapping exercise-related symptoms. After 2-4 weeks, the IBA + IMT-group was re-evaluated with CLE-test. After 4-6 years, both groups were re-assessed with a questionnaire. RESULTS: We identified 116 eligible patients from the EILO-register. Response rates after 4-6 years were 23/58 (40%) and 32/58 (55%) in the IBA and IBA + IMT-group, respectively. At diagnosis, both groups rated symptoms similarly, but laryngeal scores were higher in the IBA + IMT-group (P = 0.003). After 2-4 weeks, 23/32 in the IBA + IMT-group reported symptom improvements, associated with a decrease of mainly glottic scores (1.7-0.3; P < 0.001), contrasting unchanged scores in the 9/32 without symptom improvements. After 4-6 years, exercise-related symptoms and activity levels had decreased to similar levels in both groups, with no added benefit from IMT; however, full symptom resolution was reported by only 8/55 participants. CONCLUSION: Self-reported EILO symptoms had improved after 4-6 years, irrespective of initial treatment. Full symptom resolution was rare, suggesting individual follow-up should be offered.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Enfermedades de la Laringe
/
Obstrucción de las Vías Aéreas
Tipo de estudio:
Diagnostic_studies
/
Etiology_studies
/
Observational_studies
/
Prognostic_studies
Límite:
Adolescent
/
Humans
Idioma:
En
Revista:
Eur Arch Otorhinolaryngol
Asunto de la revista:
OTORRINOLARINGOLOGIA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Noruega
Pais de publicación:
Alemania