Factors determining the metameric level during spinal anesthesia

The aim of this study is to highlight the factors involved in the determination of the anesthetic level and the correlation between this level and the hemodynamic impact.1003 patients were collected 08 factors were studied: age sex height weight abdominal perimeter dose AL baricity and injection speed. They were analyzed in univariate and multivariate analysis using logistic regression.Univariate analysis: a significant correlation was found except for sex. Considered all together with logistic regression b 03 factors were involved: dose injection speed and age. The dose correlated with the anaesthetic block (OR = 6.69) secondly the speed of injection (OR = 5.68) and finally the age (OR = 2.24). The correlation is established between anesthetic level and hemodynamic effect as well as the consumption of vasoactive drugs.3 factors whose impact is demonstrated: dose injection speed and age. Hemodynamic effects correlated with anesthetic level.