[Anesthetic management of two patients with essential thrombocythemia].

We report different methods of anesthetic management in two patients with essential thrombocythemia. Case 1 is a 69-year-old male scheduled for cholecystectomy. His blood platelet counts were maintained between 10 to 40 x 10(4).microliters-1 after myelosuppression therapy. His preoperative blood tests were within normal limits. Since he had no signs of hemorrhage or thrombus preoperatively, an epidural catheter was inserted for intraoperative analgesia and postoperative pain relief. Anesthesia was induced with propofol and fentanyl, and maintained with N2O-O2-sevoflurane. Mepivacaine 1% was injected through the epidural catheter for intraoperative analgesia and buprenorphine was injected through the catheter for postoperative pain relief. His perioperative course was uneventful. Case 2 is an 88-year-old female scheduled for emergency enterectomy. She had had recurrent bouts of thrombosis. Her blood platelet counts were 89.1 x 10(4).microliters-1. Since her preoperative management of thrombocythemia had been poor, epidural anesthesia was not performed. Anesthesia was induced with propofol, and maintained with N2O-O2-sevoflurane. Her perioperative course was uneventful. We conclude that spinal or epidural anesthesia is not contraindicated when preoperative platelet counts and aggregation test are within normal limits in a patient with essential thrombocythemia.