The prevalence of hypertension is approximately 50 percent in renal transplanted patients, even in the most recent series. Hypertension contributes to the cardiovascular complication observed in these patients. Hypertension is related to various mechanisms: renin release from the own remaining kidney(s), stenosis of the transplant artery, often chronic rejection, rarely recurrence of the initial disease on the renal graft, or possibly transmission of "predisposition" to essential hypertension with the graft.