Fig 1.
(A) Anatomical landmarks for ultrasound measurements of the rectus femoris at the midpoint (1/2) and distal third (2/3) between the anterior superior iliac spine (ASIS) and the patella.
(B) A representative transverse ultrasound image showing the rectus femoris muscle thickness (a), the total anterior thigh muscle thickness (b), and the rectus femoris cross-sectional area (c, yellow contour).
Fig 2.
Flow diagram of patient selection: Of the 116 patients who were screened, 40 were excluded due to early death, a short ICU stay, or invalid ultrasound data.
This left 76 patients for the final analysis.
Table 1.
Baseline characteristics of enrolled patients.
Table 2.
Prognosis and interventions of patients.
Table 3.
Measurements of muscle mass over time.
Table 4.
Factors associated with RFcsa decrease ≥10% (multivariate analysis).