Fig. 2From: Assessment of platelet function in patients with stroke using multiple electrode platelet aggregometry: a prospective observational studyDistribution of ASPI-induced aggregation at baseline, 24 h and 3–5 days after 300 mg loading doses with aspirin. a In aspirin-naive patients, 13.6% had HPR (non-responder) at 3–5days. b Of patients on long term aspirin, only 7.1% were non responders at 3–5days. Horizontal dotted black lines indicate ASPI cut-off values for aspirin resistance, as reported in the literatureBack to article page