Recommendations for the Implementation of the Self-Administration of Alpha-1 Antitrypsin

María Torres-Durán,1 José Luis López-Campos,2,3 Myriam Calle Rubio,4 Carmen Montero-Martínez,5 Ana Priegue Carrera,6 Rosanel Amaro Rodríguez,7 Miriam Barrecheguren,8 María Ángeles Barrio Guirado,9 Francisco Javier Callejas-González,10 Francisco Casas-Maldonado,11 Layla Diab-Cáceres,12 Pilar García-Meseguer,9 José María Hernández-Pérez,13 Lourdes Lázaro-Asegurado,14 Cristina Martínez-González,15 Carlos Martínez Rivera,16 Francisco Javier Michel,17 José-Bruno Montoro-Ronsano,18 Raquel Sánchez,19 Marta Ortiz-Pica,20 Isabel Parra,21 José Pablo Quintero García,22 María del Rosario Ruiz-Serrano-de la Espada,23 Begoña Tortajada-Goitia,24 Marc Miravitlles8 1Pneumology Department, Hospital Álvaro Cunqueiro, NeumoVigo I+i Research Group, IIS Galicia Sur, Vigo, Spain; 2Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Madrid, Spain; 3Medical and Surgery Unit for Respiratory Diseases, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Seville, Spain; 4Pneumology Department, Research Institute of Hospital Clínico San Carlos (IdISSC), Department of Medicine, Faculty of Medicine, University Complutense of Madrid, Madrid, Spain; 5Pneumology Department, Hospital Universitario de A Coruña, A Coruña, Spain; 6Nursing Unit, Hospital Álvaro Cunqueiro, Pontevedra, Spain; 7Pneumology Department, Hospital Clínic, Barcelona, Spain; 8Pneumology Department, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain; 9Nursung Unit, Hospital Universitari Vall d’Hebron, Barcelona, Spain; 10Pneumology Department, Complejo Hospitalario Universitario de Albacete, Albacete, Spain; 11Pneumology Department, Hospital Universitario Clínico San Cecilio, Granada, Spain; 12Pneumology Department, Hospital Universitario 12 de Octubre, Madrid, Spain; 13Pneumology Department, Hospital Universitario Nuestra Señora de La Candelaria, Santa Cruz de Tenerife, Tenerife, Spain; 14Pneumology Department, Complejo Asistencial Universitario de Burgos, Burgos, Spain; 15Instituto de Investigación Sanitaria del Principado de Asturias (FINBA-ISPA) Oviedo, Oviedo, Spain; 16Pneumology Department, Hospital Universitario Germans Trías I Pujol, Institut d’investigació Germans Trias i Pujol (IGTP), Badalona, Spain; 17Pneumology Department, Hospital Universitario Donostia, Donostia, Spain; 18Hospital Pharmacy Department, Hospital Universitari Vall d’Hebron, Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain; 19Pneumology Department, Hospital Universitario Basurto, Bilbao, Spain; 20Nursing Unit, Hospital Clínico San Carlos, Madrid, Spain; 21Pneumology Department, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain; 22Hospital Pharmacy Department, Hospital Universitario Virgen del Rocío, Sevilla, Spain; 23Nursing Unit, Hospital Universitario Virgen del Rocío, Sevilla, Spain; 24Hospital Pharmacy Department, Hospital Costa del Sol, Málaga, SpainCorrespondence: María Torres-Durán, Tel +34986811111, Email [email protected]: Administration of exogenous alpha-1 antitrypsin (AAT) is the only specific therapy for the management of pulmonary morbidity in patients with AAT deficiency. It requires weekly or biweekly intravenous infusions, which may impact patient independence and quality of life. Self-administration of AAT therapy is an alternative to reduce the burden for patients who require AAT therapy. We presented herein experts’ recommendations for the implementation of a program for the self-administration of AAT.Methods: This project was conducted using a modified nominal group technique and was undertaken in two online meetings involving the participation of 25 experts: specialists in pulmonology (n=17), nurses (n=5) and hospital pharmacists (n=3).Results: The following issues were discussed, and several recommendations were agreed upon on the following topics: a) patient profile and clinical evaluation, establishing selection criteria that should include clinical as well as social criteria; b) role of health care professionals, suggested roles for specialists in pulmonology, nurses, and hospital pharmacists; c) training by the nurse, including recommendations before initiating the training and the content of the training sessions; and d) logistic issues and follow-up, adherence, and patient support.Conclusion: We expect this proposal to increase awareness of this therapeutic alternative and facilitate the implementation of self-administration programs, thus contributing to optimizing the patient experience with AAT therapy. Further research on the outcomes of these programs, especially from the patient perspective, will also help to improve their design and implementation.Keywords: alpha-1 antitrypsin deficiency, disease burden, augmentation therapy, self-administratio

Prevalence of reduced lung diffusing capacity and CT scan findings in smokers without airflow limitation: a population-based study

Background Population distribution of reduced diffusing capacity of the lungs for carbon monoxide (DLCO) in smokers and main consequences are not properly recognised. The objectives of this study were to describe the prevalence of reduced DLCO in a population-based sample of current and former smoker subjects without airflow limitation and to describe its morphological, functional and clinical implications.Methods A sample of 405 subjects aged 40 years or older with postbronchodilator forced expiratory volume in 1 s/forced vital capacity (FVC) >0.70 was obtained from a random population-based sample of 9092 subjects evaluated in the EPISCAN II study. Baseline evaluation included clinical questionnaires, exhaled carbon monoxide (CO) measurement, spirometry, DLCO determination, 6 min walk test, routine blood analysis and low-dose CT scan with evaluation of lung density and airway wall thickness.Results In never, former and current smokers, prevalence of reduced DLCO was 6.7%, 14.4% and 26.7%, respectively. Current and former smokers with reduced DLCO without airflow limitation were younger than the subjects with normal DLCO, and they had greater levels of dyspnoea and exhaled CO, greater pulmonary artery diameter and lower spirometric parameters, 6 min walk distance, daily physical activity and plasma albumin levels (all p<0.05), with no significant differences in other chronic respiratory symptoms or CT findings. FVC and exhaled CO were identified as independent risk factors for low DLCO.Conclusion Reduced DLCO is a frequent disorder among smokers without airflow limitation, associated with decreased exercise capacity and with CT findings suggesting that it may be a marker of smoking-induced early vascular damage.Trial registration number NCT03028207