Objective: To clarify the relationship between the preoperative trunk muscle mass in patients after lumbar spinal fusion calculated and Patient Reported Outcome (PRO).

Methods: 86 patients who had been treated with lumbar spinal fusion for degenerative spine conditions were examined (a mean age of 70.8 years). Preoperative trunk muscle mass and Skeletal Muscle Mass Index (SMI) were calculated by bioelectrical impedance analysis. Multiple regression analysis was performed to identify predictors of postoperative PRO. The postoperative Oswestry Disability Index (ODI) and postoperative visual analogue scale (VAS) score for lower back pain at 6 months after surgery as dependent variables. The independent variables were variables that met the significance level in a single regression analysis with the dependent variable.

Results: Multiple regression analysis identified the preoperative trunk muscle mass and number of vertebrae fused as predictors of the postoperative ODI. And the Body Mass Index, preoperative trunk muscle mass, and number of vertebrae fused as predictors of the postoperative VAS score.

Conclusion: The preoperative trunk muscle mass may be more useful for predicting the postoperative ODI and VAS score than the SMI which is the conventional index used to define sarcopenia.

Objective: The purpose of this study was to evaluate the relationship between changes in oxygenation capacity during repositioning and survival outcomes in COVID-19 patients undergoing mechanical ventilation.

Methods: The analysis was performed retrospectively on 9 COVID-19 patients undergoing ventilation who were extubated without supine positioning (side-lying group), 11 patients who were extubated with prone positioning (prone-survival group), and 20 patients who were unextubated with prone positioning (prone-death group). The main analysis items were the pulmonary oxygenation ratio (P/F value) immediately after the start of mechanical ventilation, before and after the first repositioning, and the highest value during the first positioning. The relationship with the survival outcome was analyzed by multivariate analysis.

Results: The P/F values after positional change were 214.7±62.1 mmHg in the side-lying group, 171.1±57.7 mmHg in the prone-survival group, and 139.6±36.7 mmHg in the prone-death group; the prone-death group was significantly lower than the side-lying group. The P/F value after positioning was shown to be a predictor of survival outcome, with a discrimination rate of 66.7%.

Conclusion: The P/F value after positioning was significantly lower in the prone-death group than in the side-lying group, indicating that it is a predictor of survival outcome.

Objectives: The study aimed to investigate the relationship between gait independence inpatients and gait ability, balance ability, general cognitive function, and frontal lobe function in inpatients with progressive supranuclear palsy (PSP), as well as calculate cutoff values for the selected items.

Methods: Eighty-six inpatients with PSP were included in the study. Multiple logistic regression analysis was used to examine whether the gait ability, balance ability, general cognitive function, and frontal lobe function were associated with gait independence inpatients, and cutoff values were calculated for the selected items using the receiver operating characteristic curve.

Results: The Berg balance scale (BBS) and postural stability test were associated with gait independence (p<0.01), with cutoff values of 45 points for the BBS and 2 points for the postural stability test.

Conclusion: It has been suggested that comprehensive balance functions of posture stability tests and BBS are related to the ability of inpatient gait independence in patients with PSP.