Can you give allopurinol and Rasburicase together?
Association between rasburicase and allopurinol should be avoided, because the latter may reduce the effect of rasburicase owing to its inhibition of xanthine oxidase and consequent reduced uric acid concentration (Jeha and Pui 2005).
When do you give Rasburicase for tumor lysis syndrome?
The first dose of rasburicase should be administered 4 to 24 hours before starting chemotherapy. Rasburicase is given as an intravenous infusion over 30 minutes and should not be given as a bolus infusion (4).
When do you give allopurinol after Rasburicase?
5.2 After first dose of rasburicase, start allopurinol 300 mg/m2/day (or 10 mg/kg/day) PO divided TID. 2.1. 5.3 Give first dose of Rasburicase as soon as HR-TLS criteria for elevated uric acid are met, even if therapy is not to start immediately.
What medication is given for tumor lysis syndrome?
In general, treatment of TLS consists of intensive hydration, stimulation of diuresis, and, more specifically, in the use of allopurinol and rasburicase.
Is allopurinol used for tumor lysis syndrome?
It is usually given orally at 600 mg daily for prophylaxis and 600-900 mg daily (up to a maximum of 500 mg/m2 daily) for treatment of tumor lysis syndrome. Patients unable to take oral medications can be given IV allopurinol.
What is Rasburicase used to treat?
Rasburicase injection is used to treat high levels of uric acid (a natural substance that builds up in the blood as tumors break down) in people with certain types of cancer who are being treated with chemotherapy medications.
Why is allopurinol used in TLS?
Allopurinol. Allopurinol is usually also administered to patients at risk for developing TLS. Allopurinol inhibits the metabolism of hypoxanthine and xanthine to uric acid, which decreases the accumulation of uric acid in the renal tubules, thus preventing obstructive renal disease from precipitation of uric acid.
Why is allopurinol given as adjunct to chemotherapy?
Allopurinol can be given at the start of a course of chemotherapy. When chemotherapy medicines start to kill the cancer cells, uric acid is released from these cells which can crystallise causing damage to the kidneys. Allopurinol stops these crystals from forming.
Why is Rasburicase given?
What is the difference between rasburicase and allopurinol?
Rasburicase is an FDA approved intravenous medication for the management of serum uric acid levels in the setting of anticancer therapy that is expected to result in tumor lysis. 1,2 While rasburicase breaks down uric acid that has already formed in the body, allopurinol prevents the formation of additional uric acid.
What is the recommended dose of rasburicase for the treatment of TLS?
Patients with malignancies that are classified as having a high risk for TLS may require upfront dosing of rasburicase Consider rasburicase 6 mg for patients with baseline uric acid ≥12 mg/dL OR consider an initial dose of 3 mg and monitor the patient’s uric acid levels closely to determine if a repeat dose of 3 mg if warranted
When should rasburicase be given before chemotherapy?
5 Rasburicase must be given 4 hours prior to chemotherapy. For adult patients, it is to be given at a fixed dose of 3 mg per institutional formulary restrictions; repeat doses are permitted if patient meets restrictions based on repeat lab values prior to each dose.
How much rasburicase should I take for high uric acid?
Consider rasburicase 6 mg for patients with baseline uric acid ≥12 mg/dL OR consider an initial dose of 3 mg and monitor the patient’s uric acid levels closely to determine if a repeat dose of 3 mg if warranted Ensure uric acid levels obtained after rasburicase administration are immediately put on ice.
