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  1. AU="Matsuoka, Shiho"
  2. AU="Simon, Marcelo F"
  3. AU="Ahmad, W Haj" AU="Ahmad, W Haj"
  4. AU="Drillich, Ann"
  5. AU="Bennett, Hamilton"
  6. AU="Al Kaabi, Hoor"
  7. AU="Hecht, Harvey S"
  8. AU="Minsky, Bruce D"
  9. AU="Manzano, Joanna-Grace M"
  10. AU="Acín-Pérez, Rebeca"
  11. AU="Kamakura, Tsukasa"
  12. AU="Lee, Theodore K"
  13. AU="So, Marvin"

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  1. Artikel ; Online: Health care providers' perspectives on providing end-of-life psychiatric care in cardiology and oncology hospitals: a cross-sectional questionnaire survey.

    Ichikura, Kanako / Matsuoka, Shiho / Chiba, Hiroki / Ishida, Hina / Fukase, Yuko / Murase, Hanako / Tagaya, Hirokuni / Takeuchi, Takashi / Matsushima, Eisuke

    BMC palliative care

    2023  Band 22, Heft 1, Seite(n) 23

    Abstract: Background: Psychological distress is a major concern for patients with end-stage heart failure (HF). However, psychiatric care for patients with HF is not as organized as that for patients with cancer. Therefore, the aim of this study was to elucidate ... ...

    Abstract Background: Psychological distress is a major concern for patients with end-stage heart failure (HF). However, psychiatric care for patients with HF is not as organized as that for patients with cancer. Therefore, the aim of this study was to elucidate and compare the barriers faced by health care providers of cardiology and oncology hospitals in providing end-of-life psychiatric care to patients with HF and cancer, respectively.
    Methods: We conducted a cross-sectional questionnaire survey among the health care providers of Japan. Questionnaires were mailed to physicians and nurses of 427 cardiology and 347 oncology hospitals in March 2018 to assess health care providers' perspectives. First, we compared the scores of the Palliative Care Difficulties Scale and the original scale of end-of-life psychiatric care difficulties between health care providers of cardiology and oncology hospitals. Second, we asked the health care providers to describe the barriers to providing end-of-life psychiatric care with an open-ended question and then compared the freely-provided descriptions using content analysis.
    Results: A total of 213 cardiology and 224 oncology health care providers responded to the questionnaire. No significant differences were found between health care providers of cardiology and oncology hospitals in the frequency of experiencing barriers to providing end-of-life psychiatric care (59.8% and 62.2%, respectively). A content analysis identified the following eight barriers: "patients' personal problems," "family members' problems," "professionals' personal problems," "communication problems between professionals and patients," "problems specific to end-of-life care," "problems specific to psychiatric care," "problems of institution or system," and "problems specific to non-cancer patients." The "problems specific to noncancer patients" was described more frequently by health care providers in cardiology hospitals than that in oncology hospitals. However, there were no significant differences in other items between the two.
    Conclusion: Although health care providers of both cardiology and oncology hospitals faced barriers to providing end-of-life psychiatric care, those of cardiology hospitals particularly faced challenges pertaining to non-cancer patients, such as unpredictability of prognosis or insufficiency of guideline development. A system of psychiatric care, specifically for patients with HF, should be established.
    Mesh-Begriff(e) Humans ; Cross-Sectional Studies ; Terminal Care/psychology ; Palliative Care/psychology ; Health Personnel/psychology ; Surveys and Questionnaires ; Cardiology ; Neoplasms/complications ; Neoplasms/therapy ; Hospitals ; Death
    Sprache Englisch
    Erscheinungsdatum 2023-03-15
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2091556-1
    ISSN 1472-684X ; 1472-684X
    ISSN (online) 1472-684X
    ISSN 1472-684X
    DOI 10.1186/s12904-023-01138-z
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  2. Artikel ; Online: Insomnia in Heart Failure.

    Tsuchihashi-Makaya, Miyuki / Matsuoka, Shiho

    Circulation journal : official journal of the Japanese Circulation Society

    2016  Band 80, Heft 7, Seite(n) 1525–1526

    Mesh-Begriff(e) Heart Failure/complications ; Heart Failure/physiopathology ; Humans ; Sleep Initiation and Maintenance Disorders/complications ; Sleep Initiation and Maintenance Disorders/physiopathology
    Sprache Englisch
    Erscheinungsdatum 2016-06-24
    Erscheinungsland Japan
    Dokumenttyp Editorial
    ZDB-ID 2068090-9
    ISSN 1347-4820 ; 1346-9843
    ISSN (online) 1347-4820
    ISSN 1346-9843
    DOI 10.1253/circj.CJ-16-0501
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  3. Artikel ; Online: Comparison of Lung, Lobe, and Airway Volumes between Supine and Upright Computed Tomography and Their Correlation with Pulmonary Function Test in Patients with Chronic Obstructive Pulmonary Disease.

    Yamada, Yoshitake / Chubachi, Shotaro / Yamada, Minoru / Yokoyama, Yoichi / Tanabe, Akiko / Matsuoka, Shiho / Niijima, Yuki / Murata, Mitsuru / Fukunaga, Koichi / Jinzaki, Masahiro

    Respiration; international review of thoracic diseases

    2022  Band 101, Heft 12, Seite(n) 1110–1120

    Abstract: Background: Correlations between upright CT and pulmonary function test (PFT) measurements, and differences in lung/lobe/airway volumes between supine and standing positions in patients with chronic obstructive pulmonary disease (COPD) remain unknown.!## ...

    Abstract Background: Correlations between upright CT and pulmonary function test (PFT) measurements, and differences in lung/lobe/airway volumes between supine and standing positions in patients with chronic obstructive pulmonary disease (COPD) remain unknown.
    Objectives: The study aimed to evaluate correlations between lung/airway volumes on both supine and upright CT and PFT measurements in patients with COPD, and compare CT-based inspiratory/expiratory lung/lobe/airway volumes between the two positions.
    Methods: Forty-eight patients with COPD underwent both conventional supine and upright CT in a randomized order during inspiration and expiration breath-holds, and PFTs within 2 h. We measured the lung/lobe/airway volumes on both CT.
    Results: The correlation coefficients between total lung volumes on inspiratory CT in supine/standing position and PFT total lung capacity and vital capacity were 0.887/0.920 and 0.711/0.781, respectively; between total lung volumes on expiratory CT in supine/standing position and PFT functional residual capacity and residual volume, 0.676/0.744 and 0.713/0.739, respectively; and between airway volume on inspiratory CT in supine/standing position and PFT forced expiratory volume in 1 s, 0.471/0.524, respectively. Inspiratory/expiratory bilateral upper and right lower lobe, bilateral lung, and airway volumes were significantly higher in the standing than supine position (3.6-21.2% increases, all p < 0.05); however, inspiratory/expiratory right middle lobe volumes were significantly lower in the standing position (4.6%/15.9% decreases, respectively, both p < 0.001).
    Conclusions: Upright CT-based volumes were more correlated with PFT measurements than supine CT-based volumes in patients with COPD. Unlike other lobes and airway, inspiratory/expiratory right middle lobe volumes were significantly lower in the standing than supine position.
    Mesh-Begriff(e) Humans ; Lung/diagnostic imaging ; Pulmonary Disease, Chronic Obstructive/diagnostic imaging ; Respiratory Function Tests ; Standing Position ; Tomography, X-Ray Computed/methods
    Sprache Englisch
    Erscheinungsdatum 2022-11-09
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article ; Randomized Controlled Trial
    ZDB-ID 206674-9
    ISSN 1423-0356 ; 0025-7931
    ISSN (online) 1423-0356
    ISSN 0025-7931
    DOI 10.1159/000527067
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  4. Artikel ; Online: Comparison of inspiratory and expiratory airway volumes and luminal areas among standing, sitting, and supine positions using upright and conventional CT.

    Yamada, Yoshitake / Yamada, Minoru / Chubachi, Shotaro / Yokoyama, Yoichi / Matsuoka, Shiho / Tanabe, Akiko / Niijima, Yuki / Murata, Mitsuru / Abe, Takayuki / Fukunaga, Koichi / Jinzaki, Masahiro

    Scientific reports

    2022  Band 12, Heft 1, Seite(n) 21315

    Abstract: Upright computed tomography (CT) provides physiologically relevant images of daily life postures (sitting and standing). The volume of the human airway in sitting or standing positions remains unclear, and no clinical study to date has compared the ... ...

    Abstract Upright computed tomography (CT) provides physiologically relevant images of daily life postures (sitting and standing). The volume of the human airway in sitting or standing positions remains unclear, and no clinical study to date has compared the inspiratory and expiratory airway volumes and luminal areas among standing, sitting, and supine positions. In this prospective study, 100 asymptomatic volunteers underwent both upright (sitting and standing positions) and conventional (supine position) CT during inspiration and expiration breath-holds and the pulmonary function test (PFT) within 2 h of CT. We compared the inspiratory/expiratory airway volumes and luminal areas on CT among the three positions and evaluated the correlation between airway volumes in each position on CT and PFT measurements. The inspiratory and expiratory airway volumes were significantly higher in the sitting and standing positions than in the supine position (inspiratory, 4.6% and 2.5% increase, respectively; expiratory, 14.9% and 13.4% increase, respectively; all P < 0.001). The inspiratory and expiratory luminal areas of the trachea, bilateral main bronchi, and average third-generation airway were significantly higher in the sitting and standing positions than in the supine position (inspiratory, 4.2‒10.3% increases, all P < 0.001; expiratory, 6.4‒12.8% increases, all P < 0.0001). These results could provide important clues regarding the pathogenesis of orthopnea. Spearman's correlation coefficients between the inspiratory airway volume on CT and forced vital capacity and forced expiratory volume in 1 s on PFT were numerically higher in the standing position than in the supine position (0.673 vs. 0.659 and 0.669 vs. 0.643, respectively); however, no statistically significant differences were found. Thus, the airway volumes on upright and conventional supine CT were moderately correlated with the PFT measurements.
    Sprache Englisch
    Erscheinungsdatum 2022-12-09
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-25865-0
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  5. Artikel ; Online: Comparison of inspiratory and expiratory lung and lobe volumes among supine, standing, and sitting positions using conventional and upright CT.

    Yamada, Yoshitake / Yamada, Minoru / Chubachi, Shotaro / Yokoyama, Yoichi / Matsuoka, Shiho / Tanabe, Akiko / Niijima, Yuki / Murata, Mitsuru / Fukunaga, Koichi / Jinzaki, Masahiro

    Scientific reports

    2020  Band 10, Heft 1, Seite(n) 16203

    Abstract: Currently, no clinical studies have compared the inspiratory and expiratory volumes of unilateral lung or of each lobe among supine, standing, and sitting positions. In this prospective study, 100 asymptomatic volunteers underwent both low-radiation-dose ...

    Abstract Currently, no clinical studies have compared the inspiratory and expiratory volumes of unilateral lung or of each lobe among supine, standing, and sitting positions. In this prospective study, 100 asymptomatic volunteers underwent both low-radiation-dose conventional (supine position, with arms raised) and upright computed tomography (CT) (standing and sitting positions, with arms down) during inspiration and expiration breath-holds and pulmonary function test (PFT) on the same day. We compared the inspiratory/expiratory lung/lobe volumes on CT in the three positions. The inspiratory and expiratory bilateral upper and lower lobe and lung volumes were significantly higher in the standing/sitting positions than in the supine position (5.3-14.7% increases, all P < 0.001). However, the inspiratory right middle lobe volume remained similar in the three positions (all P > 0.15); the expiratory right middle lobe volume was significantly lower in the standing/sitting positions (16.3/14.1% decrease) than in the supine position (both P < 0.0001). The Pearson's correlation coefficients (r) used to compare the total lung volumes on inspiratory CT in the supine/standing/sitting positions and the total lung capacity on PFT were 0.83/0.93/0.95, respectively. The r values comparing the total lung volumes on expiratory CT in the supine/standing/sitting positions and the functional residual capacity on PFT were 0.83/0.85/0.82, respectively. The r values comparing the total lung volume changes from expiration to inspiration on CT in the supine/standing/sitting positions and the inspiratory capacity on PFT were 0.53/0.62/0.65, respectively. The study results could impact preoperative CT volumetry of the lung in lung cancer patients (before lobectomy) for the prediction of postoperative residual pulmonary function, and could be used as the basis for elucidating undetermined pathological mechanisms. Furthermore, in addition to morphological evaluation of the chest, inspiratory and expiratory upright CT may be used as an alternative tool to predict lung volumes such as total lung capacity, functional residual capacity, and inspiratory capacity in situation in which PFT cannot be performed such as during an infectious disease pandemic, with relatively more accurate predictability compared with conventional supine CT.
    Mesh-Begriff(e) Adult ; Aged ; Exhalation ; Female ; Functional Residual Capacity/physiology ; Humans ; Lung/diagnostic imaging ; Lung/physiology ; Lung Volume Measurements ; Male ; Middle Aged ; Prospective Studies ; Respiratory Function Tests ; Sitting Position ; Standing Position ; Supine Position ; Tomography, X-Ray Computed/methods
    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2020-10-01
    Erscheinungsland England
    Dokumenttyp Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-020-73240-8
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  6. Artikel ; Online: Symptom Perception, Evaluation, Response to Symptom, and Delayed Care Seeking in Patients With Acute Heart Failure: An Observational Study.

    Okada, Akiko / Tsuchihashi-Makaya, Miyuki / Kang, JungHee / Aoki, Yoshiyuki / Fukawa, Mariko / Matsuoka, Shiho

    The Journal of cardiovascular nursing

    2018  Band 34, Heft 1, Seite(n) 36–43

    Abstract: Background: Exacerbation of heart failure (HF) requires early intervention to prevent hospital admission and to reduce mortality. Early care seeking requires that patients perceive symptoms, accurately evaluate perceived symptoms, and respond ... ...

    Abstract Background: Exacerbation of heart failure (HF) requires early intervention to prevent hospital admission and to reduce mortality. Early care seeking requires that patients perceive symptoms, accurately evaluate perceived symptoms, and respond appropriately. How perception, evaluation, and response to symptoms are associated with delay in seeking care for worsening symptoms has rarely been studied.
    Objective: The aims of this study were to investigate the associations of perception of symptoms, evaluation of symptoms, and response to symptoms with delayed care seeking in patients with HF and to identify factors associated with delayed care seeking.
    Methods: Patients admitted for acute exacerbation of HF were enrolled in this cross-sectional observational study. We used structured interviews, questionnaires, and medical record review to collect data. Factors related to delayed care seeking were identified using nonlinear regression.
    Results: Analysis was performed in 109 patients with HF. The median delay time was 124 hours. Delayed care seeking was associated with younger age and perception of fatigue, whereas evaluation of and response to symptoms were not associated with delay.
    Conclusions: Few characteristics of the symptom experience are associated with delayed care seeking among patients with HF who experience an exacerbation of symptoms. Further research is needed to determine why early care seeking is difficult among patients with HF.
    Mesh-Begriff(e) Aged ; Cross-Sectional Studies ; Delayed Diagnosis/psychology ; Dyspnea/etiology ; Dyspnea/psychology ; Fatigue/etiology ; Fatigue/psychology ; Female ; Heart Failure/complications ; Heart Failure/diagnosis ; Heart Failure/psychology ; Humans ; Male ; Middle Aged ; Patient Acceptance of Health Care/psychology
    Sprache Englisch
    Erscheinungsdatum 2018-10-06
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Observational Study
    ZDB-ID 639335-4
    ISSN 1550-5049 ; 0889-4655
    ISSN (online) 1550-5049
    ISSN 0889-4655
    DOI 10.1097/JCN.0000000000000526
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  7. Artikel ; Online: Difference in the airway luminal area between the standing and supine positions using upright and conventional computed tomography.

    Matsumoto, Shunsuke / Yamada, Yoshitake / Yamada, Minoru / Chubachi, Shotaro / Yokoyama, Yoichi / Matsuoka, Shiho / Tanabe, Akiko / Niijima, Yuki / Murata, Mitsuru / Fukunaga, Koichi / Jinzaki, Masahiro

    Clinical anatomy (New York, N.Y.)

    2021  Band 34, Heft 8, Seite(n) 1150–1156

    Abstract: No clinical studies to date have compared the airway luminal area between supine and standing positions. Our aim was therefore to compare the airway luminal area between these two positions on computed tomography (CT) and to determine its correlation ... ...

    Abstract No clinical studies to date have compared the airway luminal area between supine and standing positions. Our aim was therefore to compare the airway luminal area between these two positions on computed tomography (CT) and to determine its correlation with forced expiratory volume in 1 s (FEV1). Thirty-two asymptomatic volunteers underwent both conventional (supine position) and upright (standing position) CT during deep inspiration breath-holding. Pulmonary function tests were conducted on the same day. We measured the airway luminal area on CT in each position. Paired t-tests and Pearson's correlation coefficients were used for statistical analysis. The average luminal areas of the trachea, right and left main bronchi, and average third-generation airway were greater in the standing than the supine position by 3.4%, 6.1%, 5.5%, and 5.2%, respectively. The correlation coefficients between airway luminal areas and FEV1 tended to be higher in the standing than the supine position; this correlation was highest for the average third-generation airway (r = 0.70, P < 0.0001). The airway luminal areas of the trachea, bilateral main bronchi, and average third-generation airway were greater in the standing than the supine position. The average third-generation airway area in the standing position had the highest correlation with FEV1.
    Mesh-Begriff(e) Adult ; Aged ; Female ; Forced Expiratory Volume ; Humans ; Imaging, Three-Dimensional ; Lung/diagnostic imaging ; Male ; Middle Aged ; Prospective Studies ; Standing Position ; Supine Position ; Tomography, X-Ray Computed ; Trachea/diagnostic imaging
    Sprache Englisch
    Erscheinungsdatum 2021-07-13
    Erscheinungsland United States
    Dokumenttyp Comparative Study ; Journal Article
    ZDB-ID 1025505-9
    ISSN 1098-2353 ; 0897-3806
    ISSN (online) 1098-2353
    ISSN 0897-3806
    DOI 10.1002/ca.23763
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  8. Artikel ; Online: Differences in airway lumen area between supine and upright computed tomography in patients with chronic obstructive pulmonary disease.

    Chubachi, Shotaro / Yamada, Yoshitake / Yamada, Minoru / Yokoyama, Yoichi / Tanabe, Akiko / Matsuoka, Shiho / Niijima, Yuki / Yamasawa, Wakako / Irie, Hidehiro / Murata, Mitsuru / Fukunaga, Koichi / Jinzaki, Masahiro

    Respiratory research

    2021  Band 22, Heft 1, Seite(n) 95

    Abstract: Background: No clinical studies to date have compared the inspiratory and expiratory airway lumen area between supine and standing positions. Thus, the aims of this study were twofold: (1) to compare inspiratory and expiratory airway lumen area (IAA and ...

    Abstract Background: No clinical studies to date have compared the inspiratory and expiratory airway lumen area between supine and standing positions. Thus, the aims of this study were twofold: (1) to compare inspiratory and expiratory airway lumen area (IAA and EAA, respectively) on computed tomography (CT) among supine and standing positions; and (2) to investigate if IAA and EAA are associated with lung function abnormality in patients with chronic obstructive pulmonary disease (COPD).
    Methods: Forty-eight patients with COPD underwent both low-dose conventional (supine position) and upright CT (standing position) during inspiration and expiration breath-holds and a pulmonary function test (PFT) on the same day. We measured the IAA and EAA in each position.
    Results: For the trachea to the third-generation bronchi, the IAA was significantly larger in the standing position than in the supine position (4.1-4.9% increase, all p < 0.05). The EAA of all bronchi was significantly larger in the standing position than in the supine position (9.7-62.5% increases, all p < 0.001). The correlation coefficients of IAA in the standing position and forced expiratory volume in 1 s were slightly higher than those in the supine position. The correlation coefficients of EAA or EAA/IAA in the standing position and residual volume, and the inspiratory capacity/total lung capacity ratio were higher than those in the supine position.
    Conclusions: Airway lumen areas were larger in the standing position than in the supine position. IAAs reflect airway obstruction, and EAAs reflect lung hyperinflation. Upright CT might reveal these abnormalities more precisely. Trial registration University Hospital Medical Information Network (UMIN 000026587), Registered 17 March 2017. URL: https://upload.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000030456 .
    Mesh-Begriff(e) Aged ; Aged, 80 and over ; Breath Holding ; Female ; Humans ; Lung/diagnostic imaging ; Lung/physiopathology ; Male ; Multidetector Computed Tomography ; Patient Positioning ; Predictive Value of Tests ; Prospective Studies ; Pulmonary Disease, Chronic Obstructive/diagnostic imaging ; Pulmonary Disease, Chronic Obstructive/physiopathology ; Reproducibility of Results ; Standing Position ; Supine Position
    Sprache Englisch
    Erscheinungsdatum 2021-03-31
    Erscheinungsland England
    Dokumenttyp Comparative Study ; Journal Article
    ZDB-ID 2041675-1
    ISSN 1465-993X ; 1465-993X
    ISSN (online) 1465-993X
    ISSN 1465-993X
    DOI 10.1186/s12931-021-01692-1
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  9. Artikel ; Online: Efficacy of stress management program for depressive patients with advanced head and neck cancer: A single-center pilot study.

    Ichikura, Kanako / Nakayama, Nao / Matsuoka, Shiho / Ariizumi, Yosuke / Sumi, Takuro / Sugimoto, Taro / Fukase, Yuko / Murayama, Norio / Tagaya, Hirokuni / Asakage, Takahiro / Matsushima, Eisuke

    International journal of clinical and health psychology : IJCHP

    2020  Band 20, Heft 3, Seite(n) 213–221

    Abstract: Background/objective: Patients with head and neck cancer (HNC) have some problems such as dysfunction of breathing, eating, and/or speaking. The aim of this study was to examine efficacy of the stress management program for HNC patients (SMAP-HNC) ... ...

    Abstract Background/objective: Patients with head and neck cancer (HNC) have some problems such as dysfunction of breathing, eating, and/or speaking. The aim of this study was to examine efficacy of the stress management program for HNC patients (SMAP-HNC) compared with usual care (UC).
    Method: We conducted a pilot study of SMAP-HNC for depressive HNC patients between January 2016 and March 2018. The program contains psychoeducation, stress coping training, and operant reinforcement. The outcome measure was the Hospital Anxiety and Depression Scale (HADS), Functional Assessment of Cancer Therapy (FACT), and Brief Coping Inventory (COPE).
    Results: Twenty patients were randomly assigned to SMAP-HNC and UC group. Although a small sample sizes, there was no significant difference of depression score change between SMAP-HNC and UC group (Hedges'd
    Conclusions: It was the first study to conduct stress management program for HNC patients. Unfortunately, our trial designed as a randomized controlled trial is underpowered to make conclusion as to the efficacy of SMAP-HNC. However, there are some valuable suggestions to modify the stress management program in future.
    Sprache Englisch
    Erscheinungsdatum 2020-07-02
    Erscheinungsland Spain
    Dokumenttyp Journal Article
    ZDB-ID 2208162-8
    ISSN 2174-0852 ; 1697-2600
    ISSN (online) 2174-0852
    ISSN 1697-2600
    DOI 10.1016/j.ijchp.2020.06.003
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  10. Artikel ; Online: Differences in Lung and Lobe Volumes between Supine and Standing Positions Scanned with Conventional and Newly Developed 320-Detector-Row Upright CT: Intra-Individual Comparison.

    Yamada, Yoshitake / Yamada, Minoru / Yokoyama, Yoichi / Tanabe, Akiko / Matsuoka, Shiho / Niijima, Yuki / Narita, Keiichi / Nakahara, Takehiro / Murata, Mitsuru / Fukunaga, Koichi / Chubachi, Shotaro / Jinzaki, Masahiro

    Respiration; international review of thoracic diseases

    2020  Band 99, Heft 7, Seite(n) 598–605

    Abstract: Background: No clinical studies to date have compared unilateral lung or lobe volumes between the supine and standing positions.: Objectives: To compare lung/lobe volumes on computed tomography (CT) between these two positions and evaluate the ... ...

    Abstract Background: No clinical studies to date have compared unilateral lung or lobe volumes between the supine and standing positions.
    Objectives: To compare lung/lobe volumes on computed tomography (CT) between these two positions and evaluate the correlation between the total lung volume and total lung capacity (TLC) on pulmonary function tests (PFTs).
    Methods: Thirty-two asymptomatic volunteers underwent both conventional CT (supine position) and upright CT (standing position), during deep inspiration breath-hold, and PFTs on the same day. We measured lung/lobe volumes on CT in each position. Paired t tests were used for statistical analysis.
    Results: The volumes of the total lung (10.9% increase), right lung (10.3% increase), right upper lobe (8.6% increase), right lower lobe (14.6% increase), left lung (11.6% increase), left upper lobe (7.1% increase), and left lower lobe (16.0% increase) were significantly greater in the standing position than in the supine position (all p < 0.0001). The right middle lobe volume was similar between the two positions (p = 0.16). Intraclass correlation coefficients for agreement between total lung volumes on CT in the supine/standing positions and the TLC on PFT were 0.891/0.938, respectively.
    Conclusions: While the volumes of the bilateral upper and lower lobes and bilateral lungs were significantly greater in the standing than in the supine position, with lower lobes showing larger changes, the right middle lobe volume did not change significantly between positions. The total lung volume on upright CT in the standing position was more similar to TLC on PFT than that in the supine position.
    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2020-07-08
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 206674-9
    ISSN 1423-0356 ; 0025-7931
    ISSN (online) 1423-0356
    ISSN 0025-7931
    DOI 10.1159/000507265
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