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Abdominal aortic aneurysm (AAA, termed 'triple A') is a swelling in the aorta (the main artery from the heart) that can grow over time and can rupture, which is a medical emergency.
There is AAA screening in the UK.
The ankle-brachial pressure index (ABPI) is the ratio of the systolic blood pressure at the ankle (highest of the dorsalis pedis and posterior tibial artery pressures) to the systolic blood pressure in the upper arm (brachial artery pressure).
ABPI is measured on the same side of the body (left ankle compared with left upper arm).
Lower blood pressure in the leg than the arm (a low ABPI, less than 1) suggests blocked arteries due to PAD.
Attention deficit hyperactivity disorder (ADHD) is a group of behavioural symptoms that include inattentiveness, hyperactivity and impulsiveness.
Atrial fibrillation (AF) is a type of cardiac arrhythmia characterised by rapid and irregular beating of the heart's atria, due to aberrant electrical activity.