Comparison of Duration of Neuromuscular Block in Geriatric Patients Compared to Young Patients.

Elderly people, especially geriatric patients, account for a growing share of patients receiving anesthesia. In patients over 75 years of age the annual rate of anesthesia represents 16.8 / 100 inhabitants for women and 19.6 / 100 for men. It is a growing population, but also the most fragile population with a mortality amounting to 44.4 / 10000 anesthesia. After 85 years, one out of every two patients is ASA 3 or older. The first cause of death related to anesthesia today remains respiratory complications, particularly infectious. This is a major public health issue right now. The studies on the use of curare and particularly rocuronium are old and did not study a population of elderly people (with an average age of 70 years). Several studies show an increase in the duration of neuromuscular blockade in patients older than 70 years irrespective of any renal failure, with sometimes persistent curarizations more than 2h after a single dose. But no study to date has studied the duration of deep-intensity neuromuscular block (TOF).