1.The amyloid-related imaging abnormalities (ARIA)-positive group had higher baseline systolic blood pressure and mean arterial pressure than the ARIA-negative group.

2.Higher post-infusion mean arterial pressure during treatment sessions 1-4 may predict subsequent ARIA development.

3.Hemodynamic abnormalities after infusion were relatively common, with post-infusion hypertension (≥150/100) occurring in 25.5% of participants.

4.Lecanemab infusion was associated with a modest reduction in heart rate.