Objective To investigate the demand and willingness to the hospital at home service among the elderly with chronic diseases in Putian, Fujian, and analyze its influencing factors.

Analysis of risk factors influencing morbidity and motality after pancreaticoduodenectomy in senile patients;

Analysis of mycotic superinfections and the use of antimicrobials in senile patients;

Administration of esmolol during operation decreased the consumption of fentanyl in senile patients and its safety;

Influence of different PETCO_2 on the heart rate variability of elderly patients during the period of general anesthesia;

Retrospective analysis of delayed emergence in 15 elderly patients from general anesthesia;

Analysis of the related factors of falls in elderly patients and investigation on their recognition to the prevention of falls;