Initial management of suspected and confirmed TIA 1.1.4 Offer aspirin (300 mg daily), unless contraindicated, to people who have had a suspected TIA, to be started immediately. [2019] 2022 For a short explanation of why the committee made this 2019 recommendation and how it might affect practice, see the rationale and impact section on initial management of suspected and confirmed transient ischaemic attack (aspirin). Full details of the evidence and the committee's discussion are in evidence review A: aspirin. 1.1.5 Refer immediately people who have had a suspected TIA for specialist assessment and investigation, to be seen within 24 hours of onset of 1.1.6 Do not use scoring systems, such as ABCD2, to assess risk of subsequent stroke or to inform urgency of referral for people who have had a suspected or confirmed TIA. [2019] 1.1.7 Offer secondary prevention, in addition to aspirin, as soon as possible after the diagnosis of TIA is confirmed. [2008, amended 2019] For a short explanation of why the committee made these 2019 recommendations and how they might affect practice, see the rationale and impact section on initial management of suspected and confirmed transient ischaemic attack. Full details of the evidence and the committee's discussion are in evidence review B: TIA prediction rules. 1.2 Imaging for people who have had a suspected TIA or acute non-disabling stroke Suspected TIA 1.2.1 Do not offer CT brain scanning to people with a suspected TIA unless there is clinical suspicion of an alternative diagnosis that CT could 2022 1.2.2 After specialist assessment in the TIA clinic, consider MRI (including diffusion-weighted and blood-sensitive sequences) to determine the territory of ischaemia, or to detect haemorrhage or alternative pathologies. 