Relation between VE/VCO2 slope and maximum phonation time in chronic heart failure patients
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- Izawa Kazuhiro
- Kobe University
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- Satoshi Watanabe
- St. Marianna University School of Medicine
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- Tochimoto Shinobu
- St. Marianna University School of Medicine
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- Hirano Yasuyuki
- Tokushima Bunri University
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- Matsushima Shinya
- St. Marianna University School of Medicine
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- Suzuki Tomohiro
- St. Marianna University School of Medicine
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- Oka Koichiro
- Waseda University
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- Saito Takashi
- Visiting Nursing and Rehabilitation Network
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- Omori Yutaka
- Visiting Nursing and Rehabilitation Network
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- Suzuki Kengo
- St. Marianna University School of Medicine
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- Osada Naohiko
- St. Marianna University School of Medicine
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- Omiya Kazuto
- St. Marianna University School of Medicine
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- Shimizu Hiroyuki
- St. Marianna University School of Medicine
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- Akashi Yoshihiro
- St. Marianna University School of Medicine
抄録
【Purpose】This study aimed to determine the relation between the regression slope relating minute ventilation to carbon dioxide output(VE/VCO2 slope)and maximum phonation time(MPT), and the MPT required to attain a threshold value for VE/VCO2 slope of ≤34 in chronic heart failure(CHF)patients.【Methods】This cross-sectional study enrolled 115 CHF patients(mean age, 54.5 years;men, 84.9%). VE/VCO2 slope was assessed during cardiopulmonary exercise testing(CPX). Thereafter, patients were divided into two groups according to exercise capacity:VE/VCO2 slope ≤34(VE/VCO2 ≤34 group, n=81)and VE/VCO2 slope>34(VE/VCO2>34 group, n=34). For MPT measurements, all patients produced a sustained vowel/a:/for as long as possible during respiratory effort from a the seated position.【Results】All subjects showed significant negative correlation between VE/VCO2 slope and MPT(r=-0.51, P<.001). After adjustment for clinical characteristics, MPT was significantly higher in the VE/VCO2 ≤34 group versus VE/VCO2>34 group(21.4±6.4 vs. 17.4±4.3 sec, F=7.4, P=.007). The appropriate MPT cut-off value for identifying a VE/VCO2 slope ≤34 was 18.12 sec.【Discussion】An MPT value of 18.12 sec may be a useful target value for identifying CHF patients with a VE/VCO2 slope ≤34 and for risk management in these patients.
収録刊行物
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- 理学療法学Supplement
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理学療法学Supplement 2014 (0), 0016-, 2015
公益社団法人 日本理学療法士協会
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詳細情報 詳細情報について
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- CRID
- 1390282680552658304
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- NII論文ID
- 130005247700
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可