Body Surface Area Prediction in Odorrana grahami

Body surface area（BSA）was regarded as a more readily quantifiable parameter relative to body mass in the normalization of comparative biochemistry and physiology.The BSA prediction has attracted unceasing research back more than a century on animals,especially on humans and rats.Few studies in this area for anurans were reported,and the equation for body surface area（S）and body mass（W）：S=9.9 W 0.56,which was concluded from toads of four species in 1969,was generally adopted to estimate the body surface areas for anurans until recent years.However,this equation was not applicable to Odorrana grahami.The relationship between body surface area and body mass for this species was established as：S=15.4 W 0.579.Our current results suggest estimation equations should be used cautiously across different species and body surface area predictions on more species need to be conducted.

Standard liver weight model in adult deceased donors with fatty liver: A prospective cohort study

BACKGROUND Standard liver weight(SLW)is frequently used in deceased donor liver transplantation to avoid size mismatches with the recipient.However,some deceased donors(DDs)have fatty liver(FL).A few studies have reported that FL could impact liver size.To the best of our knowledge,there are no relevant SLW models for predicting liver size.AIM To demonstrate the relationship between FL and total liver weight(TLW)in detail and present a related SLW formula.METHODS We prospectively enrolled 212 adult DDs from West China Hospital of Sichuan University from June 2019 to February 2021,recorded their basic information,such as sex,age,body height(BH)and body weight(BW),and performed abdominal ultrasound(US)and pathological biopsy(PB).The chi-square test and kappa consistency score were used to assess the consistency in terms of FL diagnosed by US relative to PB.Simple linear regression analysis was used to explore the variables related to TLW.Multiple linear regression analysis was used to formulate SLW models,and the root mean standard error and interclass correlation coefficient were used to test the fitting efficiency and accuracy of the model,respectively.Furthermore,the optimal formula was compared with previous formulas.RESULTS Approximately 28.8%of DDs had FL.US had a high diagnostic ability(sensitivity and specificity were 86.2%and 92.9%,respectively;kappa value was 0.70,P<0.001)for livers with more than a 5%fatty change.Simple linear regression analysis showed that sex(R2,0.226;P<0.001),BH(R2,0.241;P<0.001),BW(R2,0.441;P<0.001),BMI(R2,0.224;P<0.001),BSA(R2,0.454;P<0.001)and FL(R2,0.130;P<0.001)significantly impacted TLW.In addition,multiple linear regression analysis showed that there was no significant difference in liver weight between the DDs with no steatosis and those with steatosis within 5%.Furthermore,in the context of hepatic steatosis,TLW increased positively(nonlinear);compared with the TLW of the non-FL group,the TLW of the groups with hepatic steatosis within 5%,between 5%and 20%and more than 20%increased by 0 g,90 g,and 340 g,respectively.A novel formula,namely,-348.6+(110.7 x Sex[0=Female,1=Male])+958.0 x BSA+(179.8 x FLUS[0=No,1=Yes]),where FL was diagnosed by US,was more convenient and accurate than any other formula for predicting SLW.CONCLUSION FL is positively correlated with TLW.The novel formula deduced using sex,BSA and FLUS is the optimal formula for predicting SLW in adult DDs.

Yin and Yang of Body Composition Assessment

Objectve：To define if such crucial body composition parameters like body density（Db） and body surface area（BSA） could be considered in the frame of yin-yang concept,i.e.,one of the most popular in conventional biomedical science theories of Chinese medicine.Methods：Standardized Eurofit Pysical Fitness Test Battery reports of 715 junior school children have been evaluated for association of their body composition parameters with corresponding motoric fitness test results.Equations for BSA and Db calculation included height,weight,and skin-fold thickness values of the tests.Results：Correlative analysis of major physical fitness parameters,obtained from 715 junior school children,demonstrated that participants with high BSA/Db ratio had better yang-featured anaerobic performance,whereas those with low BSA/Db ratio presented with better yin-featured aerobic performance.This result coincided with proposed suggestions to treat BSA as external yang component and Db as internal yin component of body composition.Calculated confidence intervals for BSA/ Db ratio ranged between 1.073-1.15,which can be accepted as optimal for junior school children yang/yin ratio of body composition.Conclusion：Easily accessible BSA and Db can provide specialists with useful preliminary information for generating reasonable exercise and nutritional programs.