Table 4.1 Single antiplatelet therapyCORLOE
RewordedPatients with AIS are recommended to take aspirin within 24–48 hours after the onset of symptoms. For patients undergoing intravenous thrombolysis, the administration of aspirin is typically delayed until 24 hours after treatment.IA
RewordedMonotherapy with either aspirin (50–325 mg/day) or clopidogrel (75 mg/day) can be considered the preferred antiplatelet treatment option for secondary stroke prevention.IA
RewordedTicagrelor monotherapy (as a substitute for aspirin monotherapy) is not recommended for the acute treatment of minor stroke and TIA.IIIB
New recommendationCilostazol is an alternative treatment to aspirin and clopidogrel for patients with AIS who are at high risk of bleeding.IIbB
The CASISP study showed that both aspirin and cilostazol could reduce stroke recurrence rates, with no significant difference between the two groups (HR 0.62, 95% CI 0.30 to 1.26, p=0.185).88 However, cilostazol showed a lower incidence of bleeding complications than aspirin (1 vs 7, p=0.034). It makes cilostazol a potentially suitable choice for Chinese patients with IS who have a higher risk of bleeding. The CSPS II study found that in Japanese patients with non-cardioembolic IS, the cilostazol group had a significantly lower annual stroke recurrence rate compared with the aspirin group (2.76% vs 3.71%, relative risk reduction (RRR) 25.7%, p=0.0357).89 Furthermore, the cilostazol group demonstrated a reduced annual incidence of haemorrhagic stroke or haemorrhage necessitating hospitalisation compared with the aspirin group (0.77% vs 1.77%, RRR 54.2%, p=0.0004). However, limited research from non-Asian populations is available to confirm these findings. Therefore, the generalisability of these results to non-Asian populations may require further investigation.
RevisedFor patients with moderate-to-severe IS, it is not recommended using indobufen for secondary stroke prevention.IIIB
The INSURE trial found that compared with aspirin, indobufen did not exhibit a significant reduction in the risk of stroke recurrence (HR 1.23, 95% CI 1.01 to 1.50, p for non-inferiority=0.44) or bleeding (HR 0.63, 95% CI 0.35 to 1.15, p=0.13) at 90 days.90
RewordedAbciximab is not recommended for AIS.IIIB
New recommendationFor patients with AIS, receiving intravenous tirofiban before IA MT is not recommended.IIIB
The RESCUE BT trial found that compared with placebo, tirofiban did not reduce the risk of disability at 90 days (adjusted OR 1.08, 95% CI 0.86 to 1.36).91
New recommendationIntravenous tirofiban can be beneficial in those patients who meet the RESCUE BT2 trial inclusion criteria.IIbB
The RESCUE BT2 trial found that administering intravenous tirofiban to a heterogeneous patient group with recent onset or progression of stroke symptoms and non-occluded large and medium-sized cerebral vessels resulted in a higher likelihood of excellent outcomes than low-dose aspirin (adjusted RR 1.26, 95% CI 1.04 to 1.53).92