The objective is to determine the concentration of cefazolin in the cerebrospinal fluid after a recommended antiobiotic prophylaxis by 2g of cefazolin. Our main hypothesis is that the concentration is insufficient to protect the valve from infections. The secondary objective is to compare our results to known pharmacokinetic models of cefazolin diffusion in the literature. If differences are found we would like to search clinical features that could explain it.
Age range
18 Years
Sex
ALL
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Cefazolin concentration in the cerebrospinal fluid
Timeframe: The measure is made when the dura mater is opened just before the valve implantation.