Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Measuring and Monitoring Skeletal Muscle Mass and Dysfunction After Stroke

Version 1 : Received: 27 January 2021 / Approved: 28 January 2021 / Online: 28 January 2021 (12:31:09 CET)

How to cite: Nakanishi, N.; Okura, K.; Okamura, M.; Nawata, K.; Shinohara, A.; Tanaka, K.; Katayama, S. Measuring and Monitoring Skeletal Muscle Mass and Dysfunction After Stroke. Preprints 2021, 2021010580 (doi: 10.20944/preprints202101.0580.v1). Nakanishi, N.; Okura, K.; Okamura, M.; Nawata, K.; Shinohara, A.; Tanaka, K.; Katayama, S. Measuring and Monitoring Skeletal Muscle Mass and Dysfunction After Stroke. Preprints 2021, 2021010580 (doi: 10.20944/preprints202101.0580.v1).

Abstract

Muscle mass at admission is important to survive stroke, and stroke-induced sarcopenia is a serious problem because of its poor prognosis. Muscle mass measurement and monitoring are essential for appropriate re-habilitation and nutrition management. Several methods are used to assess skeletal muscle mass in stroke, such as computed tomography (CT), ultrasonography, bioelectrical impedance analysis, dual-energy X-ray absorptiometry, biomarkers, and anthropometrics. In stroke, a head CT is used to estimate muscle mass by measuring the temporal muscle. However, it is mostly retrospectively conducted due to radiation exposure. After stroke, limb muscle atrophy and diaphragm dysfunction are observed using ultrasound. However, ultrasound requires an understanding of the methods and skill. A bioelectrical impedance analysis can be used to assess muscle mass in patients after a stroke unless they have dynamic fluid changes. Dual-energy X-ray absorptiometry is used for follow-up after hospital discharge. Urinary titin N-fragment and serum C-terminal agrin fragment reflect muscle atrophy after stroke. Anthropometrics may be useful with limited resources. We summarized the features of each measurement and proved the recent evidence to properly measure and monitor skeletal muscle mass after stroke.

Subject Areas

stroke; sarcopenia; computed tomography; ultrasound; bioelectrical impedance analysis; muscle; temporal muscle; rectus femoris muscle; diaphragm; calf circumference

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