were risk factors for PLF. These variables were included in a risk score that showed good discrimination (AUC 0.79(0.72-0.86) and good calibration. Conclusion:The selection of patients for PVE using only liver volume is insufficient considering the other predictors of PLF in PHC patients. The proposed risk score can be used for selection of patients for PVE, for adequate patient counseling and identification of other modifiable risk factors besides liver volume.

Background and Goal of StudyCardiac surgery has shown higher difficult intubation (DI) rates compared to other kind of surgeries [1][2] . Older age, male gender, morbid obesity and dental problems have been associated with these findings [1][3] . The aim of this study is to describe the prevalence of DI in cardiac procedures in our centre, as well as to analyze wether parameters as gender, age, body mass index (BMI) and type of surgery (valve replacement (VR) or coronary artery bypass (CAB)) could be predictors of DI in our population.