- All men or women, aged 60-85 years, with AAA <5.5 cm and with a systolic BP < 150 mmHg will be eligible for inclusion in the trial. For patients whose systolic BP is > 150 mmHg, treatment will be initiated with a diuretic Indapamide SR 1.5mgs by the principal investigator and/or amlodipine (5 mg daily) initiated by the general Practitioner. If the SBP subsequently falls to < 150 mmHg on this medication subjects would then be eligible for inclusion into the study.