Myosteatosis As an Independent Predictor of Short-term Mortality in Successfully Reperfused Acute Ischemic Stroke

Overview

Journal Neuroradiol J

Publisher Sage Publications

Specialties Neurology
Radiology

Date 2022 May 4

PMID 35506541

Authors

Matteo Bonatti

Fabio Lombardo

Riccardo Valletta

Alessio Comai

Benedetto Petralia

Giacomo Avesani

Enrica Franchini

Andrea Rossi

Nicoletta De Santis

Massimo Guerriero

Federica Ferro

Affiliations

Soon will be listed here.

Abstract

Background And Purpose: Poor clinical outcomes are still common in successfully reperfused acute ischemic stroke patients. The aim of our study was to assess the impact of sarcopenia and myosteatosis on neurological outcomes and mortality in successfully reperfused acute ischemic stroke patients.

Materials And Methods: We included in our retrospective observational study 166 consecutive patients who underwent technically successful mechanical thrombectomy for anterior circulation acute ischemic stroke between Jan 2016 and Dec 2019. ASPECTS and collateral score were assessed on pre-operative CT/CTA. Masseter muscles area and attenuation were measured on CTA images. Clinical and radiological variables were tested in multivariate logistic models to predict the probability of death and, among survivors, of incurring poor outcome.

Results: At admission, mean NIHSS was 19 (SD = 6.5), mean body mass index 25.5 (SD = 4.4) kg/m, and mean ASPECTS 8.0 (SD = 1.9). Of all, 48.2% patients showed good collaterals, 38.5% intermediate collaterals, and 13.3% poor collaterals. Overall, 90 days mRS was ≤2 in 48.2% of the patients, 3-5 in 30.7%, and 6 in 21.1%. At multivariate logistic regression, age (OR = 1.08, = 0.036), ASPECTS (OR = 0.59, = 0.013), and masseter muscles attenuation (OR = 0.93, = 0.010) were independent predictors of mortality, whereas sex (OR = 7.15, = 0.043), age (OR = 1.05, = 0.042), body mass index (OR = 1.35, = 0.013), NIHSS (OR = 1.12, = 0.012), and ASPECTS (OR = 0.64, = 0.024) were independent predictors of poor neurological outcome (mRS 3-5).

Conclusion: Beyond other well-known variables, low masseter attenuation, indicating myosteatosis, represents an independent negative prognostic factor for 90 days mortality in patients successfully reperfused after anterior circulation stroke.

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