Can treatment with thrombolytic drugs during the first three hours after a cva help prevent brain damage?

Yes. There are strict inclusion criteria used to identify the safest use of these drugs.
YES! See stroke association. Org and look at stroke treatments. Intravenous tpa (alteplase) good 3-4.5 hours. Intra arterial tpa (alteplase) good up to 6 hours in front of brain and 24 hours in posterior brain. Can use mechanical devices to remove clot up to 8 hrs in front and 24 hours in posterior brain.

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