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Table 2 Protocol for evaluation and diagnosis of respiratory pathology

From: Smoking cessation opportunities in severe mental illness (tobacco intensive motivational and estimate risk — TIMER—): study protocol for a randomized controlled trial

Evaluation and validation Persons responsible and venue Nursing team (Mental Health Unit)
Training Accredited traininga given by the pulmonology service of Reina Sofía Hospital, Córdoba, Spain
Skills acquired Calibration, preparing patients, performing maneuvers, bronchodilation and repetition of spirometry
Automatic Validation Automatic validation Maximum of 8 maneuvers before achieving a minimum of 3 maneuvers of an acceptable standardb Classification and automatic choice of the 2 best curves with repeatability criteriac
Reversibility test Repetition of 3 acceptable maneuvers 15 min after inhalation by bronchodilator (salbutamol, 400 μg)
Quantification and diagnosis External Validation External validation curves and volumes are assessed by a single researcher, head of the functional test unit of the Pneumology Service at the Reina Sofía Hospital, Córdoba, Spain
Volumes Forced vital capacity (FVC), forced expiratory volume (FEV1) and the quotient of the two (FEV1/FVC)
Calculation of lung age Automatic and externally verified
Diagnosis and staging Presence and degree of respiratory obstruction, according to criteria established by the Global Initiative for Chronic Obstructive Lung Disease (GOLD) guideline
  1. aThe accredited training consisted of learning the theoretical principles behind the test, how to handle and look after the material and how to perform spirometry maneuvers and secure the selected measurements
  2. bAcceptability criteria: the flow/volume curve must not contain artifacts, must start well and should last for at least 6 s
  3. cRepeatability criteria: the two highest FVC and the two highest FEV1, with a difference between them of less than 0.15 L