Foscarnet is an antiviral agent widely used in the treatment of cytomegalov
irus (CMV) infection. We describe a cardiac transplant patient, who while b
eing maintained with hemodialysis because of tobramycin-induced acute renal
failure, was given Foscarnet for disseminated CMV infection. Using dialysa
te-side clearance methodology, we found the dialyzer clearance of Foscarnet
to be in the order of 89 ml/min.