Review of the current use of global lung function initiative norms for spirometry (GLI-2012) and static lung volumes (GLI-2021) in Great Arab Maghreb (GAM) countries and steps required to improve their utilization

Saad, Helmi Ben

doi:10.1080/19932820.2022.2031596

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…Consequently, an approach that reports spirometric values based on z-scores potentially provides an age-appropriate and clinically valid strategy for evaluating respiratory impairment [15] . Furthermore, the GLI task force released the GLI-2012 spirometric norms from data collected from 72,031 healthy individuals (26 countries) aged 3-95 years and Tunisia has participated with its reference values from 870 Tunisian adults aged ≥45 years and were included in the Caucasian group [16]. For the severity categorization, the z-score and FEV1% were different in grading OVI.…”

Section: Discussionmentioning

confidence: 99%

Defining and Grading an Obstructive Ventilatory Impairment: American Thoracic Society/ European Respiratory Society Interpretive Strategies of 2005 Versus 2022

Barkous,

Kchaou,

Briki

et al. 2024

AJMAH

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Background: The American Thoracic Society (ATS) and the European Respiratory Society (ERS) have issued several updates to their guidelines for lung function testing between 2005 and 2022. Objective: We aimed to compare ATS/ERS recommendations for 2005(R1) and 2022(R2) in defining Obstructive Ventilatory Impairment (OVI) and in classifying its severity. Patients and Methods: It was a retrospective comparative study including 1129 patients. All patients underwent spirometry with measurement of Forced Expiratory Volume in 1 second (FEV1) and Forced Vital Capacity (FVC). An OVI was considered according to R1 when FEV1/FVC ratio is under the Lower Limit of Normal (LLN) and when the z-score of FEV1/FVC ratio is under -1.645 according to R2. For the severity levels of airflow obstruction: ATS/ERS previously recommended the use of percent predicted FEV1 with 5 levels using cut values of 70%, 60%, 50% and 35%. Recently updated for z-scores with cut values of -2, -2.5 and -4. Mean age was 54.23±19.23 years. Results: For defining an OVI, both definitions were comparable (529 patients with OVI). For the severity classification, the following proportions were assessed: 151 mild, 86 moderate,84 moderately severe, 133 severe and 75 very severe vs 148 mild, 238 moderate, 76 severe and 67 cases having a normal FEV1 (z-score of FEV1 above -1.645), which were classified as mild according to R1. Mild OVI(R2) were distributed according to R1 into 74 mild, 51 moderate, 16 moderately severe and 7 severe. Moderate OVI (R2) were dispatched using R1 to 10 mild, 34 moderate, 66 moderately severe, 103 severe and 25 very severe. Severe OVI(R2) were classified as 1 moderate, 2 moderately severe, 23 severe and 50 very severe. Conclusion: ATS/ERS new and previous recommendations seem to be comparable in defining OVI. However, discrepancies were assessed in classifying its severity.

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Section: Discussionmentioning

confidence: 99%

Defining and Grading an Obstructive Ventilatory Impairment: American Thoracic Society/ European Respiratory Society Interpretive Strategies of 2005 Versus 2022

Barkous,

Kchaou,

Briki

et al. 2024

AJMAH

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“…The use of accompanying spirometry maneuvers allowed the measurement of some dynamic lung volumes ( ie ; SVC, ERV, and IC), and when combined with FRC, it allowed the calculation of additional SLVs [ ie ; RV (= FRC – ERV), TLC (= SVC + RV)], and the RV/TLC ratio (%) [ 7 ]. More details related to the collected data during the spirometric/plethysmographic tests are recently reported in an Editorial aiming to review the current use of GLI-2012 [ 6 ] and GLI-2021 [ 7 ] in Great Arab Maghreb countries and steps required to improve their utilization [ 19 ].…”

Section: Population and Methodsmentioning

confidence: 99%

The global lung function initiative 2021 (GLI-2021) norms provide mixed results for static lung volumes (SLVs) in Algerian adults

Ketfi

Saad

2022

Libyan Journal of Medicine

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The validity of the GLI-2021 norms for SLVs in healthy Algerian adults has not been assessed. To ascertain how well do the GLI-2021 norms fit to contemporary SLVs data in Algerian adults. This was a cross-sectional study involving 481 (n = 242 females) healthy non-smoking adults recruited from the Algiers general population. All participants underwent a clinical examination and a plethysmography. Z-scores for slow vital capacity (SVC), functional residual capacity (FRC), residual volume (RV), total lung capacity (TLC), expiratory reserve volume (ERV), inspiratory capacity (IC), and RV/TLC were calculated. The mean difference between the determined and the predicted values (∆value) of SLVs were calculated. The GLI-2021 norms would be considered as reflective of contemporary Algerian SLVs if the total sample mean z-scores were in the normal range ( ie ; −0.5 to +0.5). The participants’ means ± SDs of age and height were 46.4 ± 16.4 years and 166 ± 10 cm, respectively. The determined SLVs were significantly different from those predicted (∆values means ± SDs were −170 ± 470 ml for IC, −100 ± 490 ml for SVC, 170 ± 400 ml for ERV, 240 ± 620 ml for TLC, 370 ± 340 ml for RV, 480 ± 480 ml for FRC, and 5.28 ± 4.38% for RV/TLC). The means ± SDs z-scores for IC, SVC, ERV, and TLC were in the normal range (−0.29 ± 0.88, −0.17 ± 0.94, 0.29 ± 0.77, and 0.35 ± 0.86, respectively), but those of RV, FRC, and RV/TLC were out of the normal range (0.74 ± 0.66, 0.75 ± 0.72, and 0.83 ± 0.75, respectively). In healthy Algerian adults, the GLI-2021 norms fit well to SVC, TLC, ERV, and IC, but they do not fit to FRC, RV, and RV/TLC.

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Isolated low FEV1 in pediatric spirometry: A reflection on recent findings

Abdesslem,

Ben Saad

2024

Pediatric Pulmonology

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Review of the current use of global lung function initiative norms for spirometry (GLI-2012) and static lung volumes (GLI-2021) in Great Arab Maghreb (GAM) countries and steps required to improve their utilization

Cited by 5 publications

References 27 publications

Defining and Grading an Obstructive Ventilatory Impairment: American Thoracic Society/ European Respiratory Society Interpretive Strategies of 2005 Versus 2022

Defining and Grading an Obstructive Ventilatory Impairment: American Thoracic Society/ European Respiratory Society Interpretive Strategies of 2005 Versus 2022

The global lung function initiative 2021 (GLI-2021) norms provide mixed results for static lung volumes (SLVs) in Algerian adults

Isolated low FEV1 in pediatric spirometry: A reflection on recent findings

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