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    Intra-rater reliability of measuring diaphragm thickness utilising ultrasound imaging by a non-sonographer practitioner

    Giles, Ben N.

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    Date
    2018
    Citation:
    Giles, Ben N. (2018). Intra-rater reliability of measuring diaphragm thickness utilising ultrasound imaging by a non-sonographer practitioner (Unpublished document submitted in partial fulfilment of the requirements for the degree of Master of Osteopathy). Unitec Institute of Technology, Auckland, New Zealand. Retrieved from https://hdl.handle.net/10652/4620
    Permanent link to Research Bank record:
    https://hdl.handle.net/10652/4620
    Abstract
    BACKGROUND: As the primary muscle of ventilation, the diaphragm has a pivotal role in breathing, and in maintaining homeostasis for all other body systems. There have been several previous studies assessing reliability of measuring diaphragm muscle thickness using ultrasound imaging (USI) by qualified sonographers, however, no previous study has investigated reliability of measurement by a rehabilitation practitioner. Additionally, no evaluation has been done to determine a link between diaphragm thickness and breathing measures AIMS: (1) To investigate the reliability of diaphragm thickness measurements utilising USI by a non-sonographer (‘novice operator’); and (2) To evaluate the correlation between diaphragm thickness measurements including contractility and dysfunctional breathing as measured by the Self Evaluated Breathing Questionnaire (SEBQ) and the Nijmegen Questionnaire (NQ) METHODS: High-resolution, B-mode ultrasound was utilised to execute a standardized protocol for repeated thickness measurements of diaphragm muscle. A convenience sample of 25 participants (13 males, 12 females, mean ± SD age = 27 ±7.2 years, height 172.6 ± 9.3cm, body mass 79 ± 14.5 and a mean SEBQ and NQ score of 14.9 ± 11.2 and 13.3 ± 7.2, respectively) attended two sessions, separated by an interval of approximately 2 weeks. Intraoperator reliability was calculated for all thickness measurements obtained by the novice USI operator. RESULTS: The novice operator demonstrated ‘very high’ intra-operator reliability for diaphragm muscle thickness measurements during all stages of breathing except for maximal inspiration on the right (all other ICCs >0.8). However it was apparent that diaphragm contractility may not be an adequate measure of diaphragm function as measured by the SEBQ and NQ. CONCLUSION: Within this study, the novice operator demonstrated acceptable reliability for diaphragm muscle thickness measurements using USI. The novice operator demonstrated very high intra-operator reliability for diaphragm measurements during quiet exhalation on both sides and at the level of maximal inspiration on the left.
    Keywords:
    diaphragm muscle thickness, measurement, breathing, ultrasound imaging (USI), reliability, test-retest, fascia
    ANZSRC Field of Research:
    110499 Complementary and Alternative Medicine not elsewhere classified
    Degree:
    Master of Osteopathy, Unitec Institute of Technology
    Supervisors:
    Moran, Robert; Bacon, Catherine
    Copyright Holder:
    Author

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    This digital work is protected by copyright. It may be consulted by you, provided you comply with the provisions of the Act and the following conditions of use. These documents or images may be used for research or private study purposes. Whether they can be used for any other purpose depends upon the Copyright Notice above. You will recognise the author's and publishers rights and give due acknowledgement where appropriate.
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    • Osteopathy Dissertations and Theses [208]

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