Pneumologie 2025; 79(S 01): S62-S63
DOI: 10.1055/s-0045-1804675
Abstracts
B2 – Endoskopie

Descriptive study of patients with subglottic-tracheal stenosis and the usefulness of spirometry.

Authors

  • E Soto Hurtado

    1   Servicio de Neumología.; Hospital La Axarquía

  • E Lobera

    2   Unidad de Gestión Clínica de Enfermedades Respiratorias.; Hospital Regional Universitario de Malaga

  • J Martínez Molina

    2   Unidad de Gestión Clínica de Enfermedades Respiratorias.; Hospital Regional Universitario de Malaga

  • Y Rodriguez Gallego

    3   Distrito Málaga-Guadalhorce.; Centro de Salud Palma-Palmilla
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    Introduction: Subglottic-tracheal (STS) stenosis can be of malignant or benign aetiology. In its diagnosis, among other clinical, radiological and endoscopic data, the FEV1/FEP index has been described as having a high diagnostic specificity when it has a value>10 L/min/ml.

    The aim is to analyse the general, endoscopic and in particular spirometric characteristics of our patients with STS.

    Methodology: Retrospective descriptive study of patients with STS referred for interventional bronchoscopic treatment (from 2017 to 2024). General data, aetiology, lung function test with calculation of the FEV1/FEP index and therapeutic endoscopic manoeuvres were collected.

    Results: The sample consisted of 30 patients (79.3% female), mean age 62±13 years. The most frequent cause was idiopathic (41.4%) followed by stenosis secondary to tracheostomy (20.7%) and endothoracic goitre (10.3%). The remaining cases were: compression due to mediastinal masses, stenosis due to granulomatosis with polyangiitis or radiotherapy.

    Regarding endoscopic diagnosis, 85.7% of STS corresponded to grade 2 according to Cotton's classification, the rest being grade 1. Endoscopic treatment was performed in 25 patients, the most frequent (24.1%): cutting with an electric blade, balloon dilatation and instillation of intralesional corticosteroid. 44% of patients treated were referred to thoracic surgery.

    Spirometric results ([Fig. 1]). 55% of the patients had lung function test prior to endoscopic treatment. Of these, 25% had a normal volume flow curve, 12.5% had expiratory flattening and 62.5% had both inspiratory and expiratory flattening. Table 2 describes the FEV1/FVC index according to the morphology of the volume flow curve. 68.8% had an FEV1/EFP index>10L/min/ml.

    Conclusions: Spirometry and its volume flow curve are useful for the diagnosis and follow-up of tracheal pathology, with the FEV1/EFP index standing out.

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    Fig. 1  

     

    Publication History

    Article published online:
    18 March 2025

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    Fig. 1