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Article Abstract
Background: Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative treatment for hematological malignancies. Several complications following allo-HSCT, such as graft-versus-host disease, infection, and malnutrition, often cause physical dysfunction, and the assessment of physical function and evaluation of muscle mass are incompletely performed. Use of ultrasound (US) allows muscle mass measurement in patients with poor general conditions. In allo-HSCT recipients, the correlation between physical function and muscle thickness, as measured by US, remains unclear.
Objective: To clarify whether muscle thickness measured by US correlated with physical function in allo-HSCT recipients.
Design: A single-center prospective cohort study.
Setting: Hospital.
Patients: Ninety-two patients underwent allo-HSCT at our hospital from April 2017 to March 2019.
Interventions: Not applicable.
Main Outcome Measure(s): Biceps and quadriceps muscle thickness measured by US, grip strength, isometric muscle strength (elbow flexion and knee extension), and 6-minute walking test (6MWT) before allo-HSCT and on days 30, 90, 180, 1 year, and 2 years after allo-HSCT. The implementation rates of these assessments were also investigated.
Results: Correlations were observed between biceps thickness and elbow flexion muscle strength/grip strength before allo-HSCT, on days 30, 90, 180, 1 year, and 2 years after allo-HSCT (r = 0.71/0.74, 0.73/0.72, 0.70/0.79, 0.67/0.75, 0.72/0.75, and 0.85/0.79, respectively, all p < .001). At the same time points, quadriceps thickness moderately correlated with knee extensor strength (r = 0.49, 0.50, 0.45, 0.64, 0.61, and 0.58, all p < .001). However, biceps and quadriceps thicknesses did not correlate with the 6MWT. The percentages of patients measured with US and 6MWT were 93.4% and 82.4% (p = .01) on day 30 and 97.5% and 87.8% (p = .02) on day 90, respectively.
Conclusions: US assessment may be a useful alternative method for estimating muscle strength in fragile allo-HSCT recipients, particularly when physical function assessment is difficult to quantify.
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| http://dx.doi.org/10.1002/pmrj.13083 | DOI Listing |
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