Final answer:
Capillary refill in an adult patient can be affected by factors such as blood volume, vascular tone, and vascular functioning. Conditions like hypertension, hypotension, edema, varicose veins, and circulatory shock can all impact capillary refill.
Step-by-step explanation:
In an adult patient, capillary refill can be affected by several factors including blood volume, vascular tone, and vascular functioning. For example, hypertension and hypotension can affect capillary refill by altering blood pressure. Other conditions such as edema, varicose veins, and circulatory shock can also impact capillary refill due to changes in blood flow and vascular homeostasis.