Glossary

adverse event – an unexpected or unwanted effect during a research study. Sometimes this used to describe a side effect from a drug.

Although all side effects are adverse events, not all adverse events are side effects.

tachycardia refers to when the heart beats too fast.

bradycardia is when the heart beats too slowly.

See: arrhythmia

study population – the group of people in a study.

compartment – place in the body that has barriers limiting both HIV and HIV drugs from moving freely. Key sites include the brian, the genital tract and some organs. Also called sanctuary sites.

portal hypertension – increased blood pressure (hypertension) in the vein carrying blood to the liver.