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Characteristics of the nocturnal desaturation waveform pattern of SpO2 in COPD patients: an observational study

Background Nocturnal desaturation is common in patients with chronic obstructive pulmonary disease (COPD) and impacts disease exacerbation and prognosis. In our previous study, we developed a diagnostic algorithm to classify nocturnal desaturation from SpO.sub.2 waveform patterns based on data from...

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Published in:Respiratory research 2021-10, Vol.22 (1), p.1-276, Article 276
Main Authors: Yoshizaki, Asuka, Nagano, Tatsuya, Izumi, Shintaro, Nishiuma, Teruaki, Nakata, Kyosuke, Yamamoto, Masatsugu, Yasuda, Yuichiro, Hazama, Daisuke, Umezawa, Kanoko, Katsurada, Naoko, Tachihara, Motoko, Nishimura, Yoshihiro, Kobayashi, Kazuyuki
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container_title Respiratory research
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creator Yoshizaki, Asuka
Nagano, Tatsuya
Izumi, Shintaro
Nishiuma, Teruaki
Nakata, Kyosuke
Yamamoto, Masatsugu
Yasuda, Yuichiro
Hazama, Daisuke
Umezawa, Kanoko
Katsurada, Naoko
Tachihara, Motoko
Nishimura, Yoshihiro
Kobayashi, Kazuyuki
description Background Nocturnal desaturation is common in patients with chronic obstructive pulmonary disease (COPD) and impacts disease exacerbation and prognosis. In our previous study, we developed a diagnostic algorithm to classify nocturnal desaturation from SpO.sub.2 waveform patterns based on data from patients receiving home oxygen therapy. In this study, we aimed to investigate nocturnal desaturation in patients with COPD based on SpO.sub.2 waveform patterns and the associations between the waveforms and clinical data. Methods We investigated patients diagnosed with COPD and measured SpO.sub.2 and nasal airflow with a type 4 portable long-term recordable pulse oximeter. Then, we classified the SpO.sub.2 waveforms with the algorithm and compared the clinical data. Results One hundred fifty-three patients (136 male and 17 female) were analysed. One hundred twenty-eight of the 153 (83.7%) patients had nocturnal desaturation, with an intermittent pattern (70.6%), sustained pattern (13.1%) and periodic pattern (68.0%). Intriguingly, desaturation with an intermittent pattern was associated with the apnoea-hypopnea index obtained with the portable monitor, and desaturation with a sustained pattern was associated with the cumulative percentage of time at a SpO.sub.2 below 90%. Conclusions We found that nocturnal desaturation was frequently observed in patients with COPD and could be classified into 3 types of waveform patterns. Keywords: COPD, Nocturnal desaturation, Sustained pattern, Periodic pattern, Intermittent pattern
doi_str_mv 10.1186/s12931-021-01868-9
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In our previous study, we developed a diagnostic algorithm to classify nocturnal desaturation from SpO.sub.2 waveform patterns based on data from patients receiving home oxygen therapy. In this study, we aimed to investigate nocturnal desaturation in patients with COPD based on SpO.sub.2 waveform patterns and the associations between the waveforms and clinical data. Methods We investigated patients diagnosed with COPD and measured SpO.sub.2 and nasal airflow with a type 4 portable long-term recordable pulse oximeter. Then, we classified the SpO.sub.2 waveforms with the algorithm and compared the clinical data. Results One hundred fifty-three patients (136 male and 17 female) were analysed. One hundred twenty-eight of the 153 (83.7%) patients had nocturnal desaturation, with an intermittent pattern (70.6%), sustained pattern (13.1%) and periodic pattern (68.0%). Intriguingly, desaturation with an intermittent pattern was associated with the apnoea-hypopnea index obtained with the portable monitor, and desaturation with a sustained pattern was associated with the cumulative percentage of time at a SpO.sub.2 below 90%. Conclusions We found that nocturnal desaturation was frequently observed in patients with COPD and could be classified into 3 types of waveform patterns. Keywords: COPD, Nocturnal desaturation, Sustained pattern, Periodic pattern, Intermittent pattern</description><identifier>ISSN: 1465-993X</identifier><identifier>ISSN: 1465-9921</identifier><identifier>EISSN: 1465-993X</identifier><identifier>EISSN: 1465-9921</identifier><identifier>DOI: 10.1186/s12931-021-01868-9</identifier><identifier>PMID: 34702275</identifier><language>eng</language><publisher>London: BioMed Central Ltd</publisher><subject>Air flow ; Airway management ; Algorithms ; Apnea ; Body mass index ; Chronic obstructive pulmonary disease ; COPD ; Desaturation ; Development and progression ; Diagnosis ; Health aspects ; Hypoxia ; Intermittent pattern ; Lung diseases ; Lung diseases, Obstructive ; Measurement ; Nocturnal desaturation ; Observational studies ; Obstructive lung disease ; Oxygen ; Oxygen therapy ; Patients ; Periodic pattern ; Portability ; Prognosis ; Pulse oximetry ; Sleep ; Sustained pattern ; Waveforms</subject><ispartof>Respiratory research, 2021-10, Vol.22 (1), p.1-276, Article 276</ispartof><rights>COPYRIGHT 2021 BioMed Central Ltd.</rights><rights>2021. 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In our previous study, we developed a diagnostic algorithm to classify nocturnal desaturation from SpO.sub.2 waveform patterns based on data from patients receiving home oxygen therapy. In this study, we aimed to investigate nocturnal desaturation in patients with COPD based on SpO.sub.2 waveform patterns and the associations between the waveforms and clinical data. Methods We investigated patients diagnosed with COPD and measured SpO.sub.2 and nasal airflow with a type 4 portable long-term recordable pulse oximeter. Then, we classified the SpO.sub.2 waveforms with the algorithm and compared the clinical data. Results One hundred fifty-three patients (136 male and 17 female) were analysed. One hundred twenty-eight of the 153 (83.7%) patients had nocturnal desaturation, with an intermittent pattern (70.6%), sustained pattern (13.1%) and periodic pattern (68.0%). Intriguingly, desaturation with an intermittent pattern was associated with the apnoea-hypopnea index obtained with the portable monitor, and desaturation with a sustained pattern was associated with the cumulative percentage of time at a SpO.sub.2 below 90%. Conclusions We found that nocturnal desaturation was frequently observed in patients with COPD and could be classified into 3 types of waveform patterns. 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In our previous study, we developed a diagnostic algorithm to classify nocturnal desaturation from SpO.sub.2 waveform patterns based on data from patients receiving home oxygen therapy. In this study, we aimed to investigate nocturnal desaturation in patients with COPD based on SpO.sub.2 waveform patterns and the associations between the waveforms and clinical data. Methods We investigated patients diagnosed with COPD and measured SpO.sub.2 and nasal airflow with a type 4 portable long-term recordable pulse oximeter. Then, we classified the SpO.sub.2 waveforms with the algorithm and compared the clinical data. Results One hundred fifty-three patients (136 male and 17 female) were analysed. One hundred twenty-eight of the 153 (83.7%) patients had nocturnal desaturation, with an intermittent pattern (70.6%), sustained pattern (13.1%) and periodic pattern (68.0%). Intriguingly, desaturation with an intermittent pattern was associated with the apnoea-hypopnea index obtained with the portable monitor, and desaturation with a sustained pattern was associated with the cumulative percentage of time at a SpO.sub.2 below 90%. Conclusions We found that nocturnal desaturation was frequently observed in patients with COPD and could be classified into 3 types of waveform patterns. Keywords: COPD, Nocturnal desaturation, Sustained pattern, Periodic pattern, Intermittent pattern</abstract><cop>London</cop><pub>BioMed Central Ltd</pub><pmid>34702275</pmid><doi>10.1186/s12931-021-01868-9</doi><orcidid>https://orcid.org/0000-0003-0790-5139</orcidid><oa>free_for_read</oa></addata></record>
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subjects Air flow
Airway management
Algorithms
Apnea
Body mass index
Chronic obstructive pulmonary disease
COPD
Desaturation
Development and progression
Diagnosis
Health aspects
Hypoxia
Intermittent pattern
Lung diseases
Lung diseases, Obstructive
Measurement
Nocturnal desaturation
Observational studies
Obstructive lung disease
Oxygen
Oxygen therapy
Patients
Periodic pattern
Portability
Prognosis
Pulse oximetry
Sleep
Sustained pattern
Waveforms
title Characteristics of the nocturnal desaturation waveform pattern of SpO2 in COPD patients: an observational study
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