Investigation of the optimal method of oxygen administration with simultaneous use of a surgical mask: a randomized control study.

Purpose: From the perspective of infection prevention during the Coronavirus disease 2019 (COVID-19) pandemic, a recommendation was made to use surgical masks after extubation in patients in the operating room. For compliance with this recommendation, anesthesiologists need to administer oxygen to the patient with an oxygen mask over the surgical mask. However, no studies have investigated whether this method allows good maintenance of oxygenation in patients.

A novel prediction equation of resting energy expenditure for Japanese septic patients.

Estimating nutrient consumption and administering appropriate nutritional therapy is essential for improving clinical outcomes in critically ill patients. Various equations, such as the Harris-Benedict equation, have been developed to estimate the required calories. Previous equations, however, targeted Westerners, whose physical characteristics are likely different from those of Asians.

Cytochrome P450foxy, a catalytically self-sufficient fatty acid hydroxylase of the fungus Fusarium oxysporum.

We have purified membrane-bound fatty acid (omega-1-omega-3) hydroxylase of the fungus Fusarium oxysporum MT-811 and found that the activity depends on a single polypeptide with an apparent M(r) value of 118,000. The purified hydroxylase exhibited spectral characteristics of cytochrome P450 (P450), and could catalyze the hydroxylation without the aid of any other proteinaceous components, such as NADPH-P450 reductase. These properties of the fungal hydroxylase are the same as those of bacterial P450BM3 of Bacillus megaterium, a catalytically self-sufficient fused protein of P450 and its reductase.