It generally takes us three hours - once my husband gets into the treatment room, that is. The premeds (decadron and aloxi) take about 15 minutes to run in. Then they start the CPT-11 and it is always 90 minutes. Following the CPT-11, the Avastin is last. It takes 20 minutes. That is the schedule - once they see that you don't experience adverse side effects. They run the Avastin in slower the first couple of times and then when the patient does ok with it, its 20 minutes thereafter.
Back last July before my husband's first CPT-11 / Avastin treatment, they inserted a Hickman catheter. They said if they had put a port in, they would have had to wait 30 days to start the Avastin. Since my husband experienced progression of his tumor while on radiation and Temodar, they did NOT want to wait thirty days.
Several months ago, he had to have a tooth extracted. On his regular treatment day, they did not give the Avastin treatment and he had the tooth pulled the next day. Then he was ok for the Avastin two weeks later when his regular treatment time came. So, yes, folks here are correct, you don't mess around with surgery - of any kind - while on Avastin.
Best of Luck,
Barb
Husband dx 4/07/07 with inoperable GBM IV. On Avastin / CPT-11 since 7/25/07.