Measuring vital capacity in amyotrophic lateral sclerosis: Effects of interfaces and reproducibility

Deterioration of vital capacity (VC) in amyotrophic lateral sclerosis (ALS) signifies disease progression and indicates need for non-invasive ventilation. Weak facial muscles consequent to ALS, with resulting poor mouth seal, may interfere with the accuracy of VC measurements. To determine whether d...

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Veröffentlicht in:Respiratory medicine 2021-01, Vol.176, p.106277-106277, Article 106277
Hauptverfasser: Pellegrino, Giulia Michela, Sferrazza Papa, Giuseppe Francesco, Centanni, Stefano, Corbo, Massimo, Kvarnberg, David, Tobin, Martin J., Laghi, Franco
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container_end_page 106277
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container_start_page 106277
container_title Respiratory medicine
container_volume 176
creator Pellegrino, Giulia Michela
Sferrazza Papa, Giuseppe Francesco
Centanni, Stefano
Corbo, Massimo
Kvarnberg, David
Tobin, Martin J.
Laghi, Franco
description Deterioration of vital capacity (VC) in amyotrophic lateral sclerosis (ALS) signifies disease progression and indicates need for non-invasive ventilation. Weak facial muscles consequent to ALS, with resulting poor mouth seal, may interfere with the accuracy of VC measurements. To determine whether different interfaces affect VC measurements in ALS patients and whether the interface yielding the largest VC produces an even higher VC when re-measured after one week (learning effect). To explore the relationship between optimal interface VC and sniff nasal pressure (SNIP), a measurement of global inspiratory muscle strength. Thirty-five patients (17 bulbar and 18 spinal ALS) were studied. Three interfaces (rigid-cylindrical, flanged, oronasal mask) were tested. One week after the first visit, VC was recorded using the optimal interface. SNIP recordings were also obtained. In the bulbar ALS group, median (interquartile range) VC with the flanged mouthpiece was 8.4% (3.9–15.5) larger than with the cylindrical mouthpiece (p 
doi_str_mv 10.1016/j.rmed.2020.106277
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Weak facial muscles consequent to ALS, with resulting poor mouth seal, may interfere with the accuracy of VC measurements. To determine whether different interfaces affect VC measurements in ALS patients and whether the interface yielding the largest VC produces an even higher VC when re-measured after one week (learning effect). To explore the relationship between optimal interface VC and sniff nasal pressure (SNIP), a measurement of global inspiratory muscle strength. Thirty-five patients (17 bulbar and 18 spinal ALS) were studied. Three interfaces (rigid-cylindrical, flanged, oronasal mask) were tested. One week after the first visit, VC was recorded using the optimal interface. SNIP recordings were also obtained. In the bulbar ALS group, median (interquartile range) VC with the flanged mouthpiece was 8.4% (3.9–15.5) larger than with the cylindrical mouthpiece (p &lt; 0.001). VC values with oronasal mask were intermediate to VC with the other two interfaces. In spinal ALS, flanged mouthpiece VC was 4.6% (2.3–7.5) larger than with oronasal mask (p &lt; 0.0006). The latter was 4.5% (0.6–5.2) smaller than with the cylindrical mouthpiece (p = 0.002). In both groups, VC during the second visit was greater than during the first visit (p &lt; 0.025). SNIPs were logarithmically related to VC values recorded with the flanged mouthpiece. A flanged mouthpiece yields the largest values of VC in patients with bulbar and spinal ALS. •Deterioration of vital capacity (VC) in ALS signifies disease progression.•Weak facial muscles consequent to ALS, with resulting poor mouth seal, interfere with VC measurement.•VC measured with rigid cylindrical, flanged mouthpieces and oronasal mask.•After one week, VC values recorded with a flanged mouthpieces were larger than baseline.•Accurate VC measurement in ALS is best made with flanged mouthpiece.</description><identifier>ISSN: 0954-6111</identifier><identifier>EISSN: 1532-3064</identifier><identifier>DOI: 10.1016/j.rmed.2020.106277</identifier><identifier>PMID: 33310203</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Amyotrophic lateral sclerosis ; Disease ; Experiments ; Interfaces ; Multivariate analysis ; Muscle strength ; Muscles ; Non-invasive ventilation ; Oral interfaces ; Ostomy ; Oxygen therapy ; Patients ; Reproducibility ; Respiration ; Respiratory function ; Respiratory function test ; Respiratory muscle weakness ; Spirometry ; Ventilation</subject><ispartof>Respiratory medicine, 2021-01, Vol.176, p.106277-106277, Article 106277</ispartof><rights>2020 Elsevier Ltd</rights><rights>Copyright © 2020 Elsevier Ltd. 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Weak facial muscles consequent to ALS, with resulting poor mouth seal, may interfere with the accuracy of VC measurements. To determine whether different interfaces affect VC measurements in ALS patients and whether the interface yielding the largest VC produces an even higher VC when re-measured after one week (learning effect). To explore the relationship between optimal interface VC and sniff nasal pressure (SNIP), a measurement of global inspiratory muscle strength. Thirty-five patients (17 bulbar and 18 spinal ALS) were studied. Three interfaces (rigid-cylindrical, flanged, oronasal mask) were tested. One week after the first visit, VC was recorded using the optimal interface. SNIP recordings were also obtained. In the bulbar ALS group, median (interquartile range) VC with the flanged mouthpiece was 8.4% (3.9–15.5) larger than with the cylindrical mouthpiece (p &lt; 0.001). VC values with oronasal mask were intermediate to VC with the other two interfaces. In spinal ALS, flanged mouthpiece VC was 4.6% (2.3–7.5) larger than with oronasal mask (p &lt; 0.0006). The latter was 4.5% (0.6–5.2) smaller than with the cylindrical mouthpiece (p = 0.002). In both groups, VC during the second visit was greater than during the first visit (p &lt; 0.025). SNIPs were logarithmically related to VC values recorded with the flanged mouthpiece. A flanged mouthpiece yields the largest values of VC in patients with bulbar and spinal ALS. •Deterioration of vital capacity (VC) in ALS signifies disease progression.•Weak facial muscles consequent to ALS, with resulting poor mouth seal, interfere with VC measurement.•VC measured with rigid cylindrical, flanged mouthpieces and oronasal mask.•After one week, VC values recorded with a flanged mouthpieces were larger than baseline.•Accurate VC measurement in ALS is best made with flanged mouthpiece.</description><subject>Amyotrophic lateral sclerosis</subject><subject>Disease</subject><subject>Experiments</subject><subject>Interfaces</subject><subject>Multivariate analysis</subject><subject>Muscle strength</subject><subject>Muscles</subject><subject>Non-invasive ventilation</subject><subject>Oral interfaces</subject><subject>Ostomy</subject><subject>Oxygen therapy</subject><subject>Patients</subject><subject>Reproducibility</subject><subject>Respiration</subject><subject>Respiratory function</subject><subject>Respiratory function test</subject><subject>Respiratory muscle weakness</subject><subject>Spirometry</subject><subject>Ventilation</subject><issn>0954-6111</issn><issn>1532-3064</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kc1O3DAUhS3UCqbAC7CoLHXDJlP_xU5QNwhRWomqG1hbzvU19SiTDHaCNG-Po4FNF6ws-X7n-PocQi44W3PG9ffNOm3RrwUTy4UWxhyRFa-lqCTT6hNZsbZWleacn5AvOW8YY61S7JicSCl5UckV8X_Q5TnF4Ym-xMn1FNzOQZz2NA7UbffjlMbdvwi0dxOmMs_QYxpzzFf0NgSEKdMxFLhMgwPM1A2eJtyl0c8Qu9gXrzPyObg-4_nbeUoef94-3Pyq7v_e_b65vq9AiWaqms4z7oJuAhONMrU3umOyhs4jhzoYwaDxXMku1CoY7RAldKJtNRihdavlKbk8-JbXn2fMk93GDNj3bsBxzlYow5jQTJqCfvsP3YxzGsp2hWqaWvLaqEKJAwXlyzlhsLsUty7tLWd26cBu7NKBXTqwhw6K6Oub9dwts3fJe-gF-HEAsGTxEjHZDBEHQB9TCdT6MX7k_wql15g_</recordid><startdate>202101</startdate><enddate>202101</enddate><creator>Pellegrino, Giulia Michela</creator><creator>Sferrazza Papa, Giuseppe Francesco</creator><creator>Centanni, Stefano</creator><creator>Corbo, Massimo</creator><creator>Kvarnberg, David</creator><creator>Tobin, Martin J.</creator><creator>Laghi, Franco</creator><general>Elsevier Ltd</general><general>Elsevier Limited</general><scope>6I.</scope><scope>AAFTH</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U9</scope><scope>ASE</scope><scope>FPQ</scope><scope>H94</scope><scope>K6X</scope><scope>K9.</scope><scope>M7N</scope><scope>NAPCQ</scope><scope>7X8</scope></search><sort><creationdate>202101</creationdate><title>Measuring vital capacity in amyotrophic lateral sclerosis: Effects of interfaces and reproducibility</title><author>Pellegrino, Giulia Michela ; 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Weak facial muscles consequent to ALS, with resulting poor mouth seal, may interfere with the accuracy of VC measurements. To determine whether different interfaces affect VC measurements in ALS patients and whether the interface yielding the largest VC produces an even higher VC when re-measured after one week (learning effect). To explore the relationship between optimal interface VC and sniff nasal pressure (SNIP), a measurement of global inspiratory muscle strength. Thirty-five patients (17 bulbar and 18 spinal ALS) were studied. Three interfaces (rigid-cylindrical, flanged, oronasal mask) were tested. One week after the first visit, VC was recorded using the optimal interface. SNIP recordings were also obtained. In the bulbar ALS group, median (interquartile range) VC with the flanged mouthpiece was 8.4% (3.9–15.5) larger than with the cylindrical mouthpiece (p &lt; 0.001). VC values with oronasal mask were intermediate to VC with the other two interfaces. In spinal ALS, flanged mouthpiece VC was 4.6% (2.3–7.5) larger than with oronasal mask (p &lt; 0.0006). The latter was 4.5% (0.6–5.2) smaller than with the cylindrical mouthpiece (p = 0.002). In both groups, VC during the second visit was greater than during the first visit (p &lt; 0.025). SNIPs were logarithmically related to VC values recorded with the flanged mouthpiece. A flanged mouthpiece yields the largest values of VC in patients with bulbar and spinal ALS. •Deterioration of vital capacity (VC) in ALS signifies disease progression.•Weak facial muscles consequent to ALS, with resulting poor mouth seal, interfere with VC measurement.•VC measured with rigid cylindrical, flanged mouthpieces and oronasal mask.•After one week, VC values recorded with a flanged mouthpieces were larger than baseline.•Accurate VC measurement in ALS is best made with flanged mouthpiece.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>33310203</pmid><doi>10.1016/j.rmed.2020.106277</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record>
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subjects Amyotrophic lateral sclerosis
Disease
Experiments
Interfaces
Multivariate analysis
Muscle strength
Muscles
Non-invasive ventilation
Oral interfaces
Ostomy
Oxygen therapy
Patients
Reproducibility
Respiration
Respiratory function
Respiratory function test
Respiratory muscle weakness
Spirometry
Ventilation
title Measuring vital capacity in amyotrophic lateral sclerosis: Effects of interfaces and reproducibility
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