Abstract
Introduction:
Assessment of muscle architecture (MA) using ultrasound (US) is a potential method for detection of sarcopenia. However, the majority of US scanners are stationary (S-US) and expensive. This study aimed to assess validity and intra-rater reliability of hand-held US (HH-US) when compared to (S-US) for assessing MA in acutely hospitalised older adults.
Methods:
A convenience sample of acutely admitted geriatric patients was used. Applying a US protocol developed in a geriatric setting [1], MA (fascicle length (Lf) and muscle thickness (Tm)) of muscle vastus lateralis (VL), was assessed at 35% femur length by HH-US (GE Vscan Air ®) and S-US (GE Venue ®) during same session by a single examiner. Ratio of Lf/Tm was calculated via ImageJ by an experienced investigator (A) and a beginner (B) to obtain an ultrasound index of muscle wasting associated with sarcopenia (USI) [2]. Validity and intra-rater reliability was assessed by Cohens-Kappa-Coefficient (κ).
Results:
21 participants (52% female, mean age 83.4 yrs (SD 10.7), mean Barthel-100 score 65.4 (27.3)) were included. Validity and intra-rater reliability of USI values between the US scanners was near perfect with a κ = 0.91 for A and fair with a κ = 0.34 for B.
Key conclusion:
Compared to S-US, HH-US showed near perfect validity and intra-rater reliability in selected variables of MA in acutely hospitalised geriatric patients, when an experienced US investigator performs the image analysis. HH-US is cheaper, portable and has potential in future use of US in detecting sarcopenia in both hospital and non-hospital settings.
Assessment of muscle architecture (MA) using ultrasound (US) is a potential method for detection of sarcopenia. However, the majority of US scanners are stationary (S-US) and expensive. This study aimed to assess validity and intra-rater reliability of hand-held US (HH-US) when compared to (S-US) for assessing MA in acutely hospitalised older adults.
Methods:
A convenience sample of acutely admitted geriatric patients was used. Applying a US protocol developed in a geriatric setting [1], MA (fascicle length (Lf) and muscle thickness (Tm)) of muscle vastus lateralis (VL), was assessed at 35% femur length by HH-US (GE Vscan Air ®) and S-US (GE Venue ®) during same session by a single examiner. Ratio of Lf/Tm was calculated via ImageJ by an experienced investigator (A) and a beginner (B) to obtain an ultrasound index of muscle wasting associated with sarcopenia (USI) [2]. Validity and intra-rater reliability was assessed by Cohens-Kappa-Coefficient (κ).
Results:
21 participants (52% female, mean age 83.4 yrs (SD 10.7), mean Barthel-100 score 65.4 (27.3)) were included. Validity and intra-rater reliability of USI values between the US scanners was near perfect with a κ = 0.91 for A and fair with a κ = 0.34 for B.
Key conclusion:
Compared to S-US, HH-US showed near perfect validity and intra-rater reliability in selected variables of MA in acutely hospitalised geriatric patients, when an experienced US investigator performs the image analysis. HH-US is cheaper, portable and has potential in future use of US in detecting sarcopenia in both hospital and non-hospital settings.
| Original language | English |
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| Publication date | 22. Sept 2023 |
| Publication status | Published - 22. Sept 2023 |
| Event | European Geriatric Medicine Society: Healthy Aging in the Changing World - Helsinki, Finland Duration: 20. Sept 2023 → 22. Sept 2023 https://eugms2023.com/ |
Conference
| Conference | European Geriatric Medicine Society |
|---|---|
| Country/Territory | Finland |
| City | Helsinki |
| Period | 20/09/2023 → 22/09/2023 |
| Internet address |