Some people's veins are hard to find due to factors like dehydration, stress, vein depth, or external conditions.

His temperature was 38.6°C. A 3-by-4-cm area of erythema and swelling with drainage was present in the right antecubital fossa. The physical examination was otherwise unremarkable.

Intravenous injection of carbon dioxide for detection of pericardial effusion is not a ... Carbon dioxide is injected by way of a slowly running glucose and water infusion into an antecubital vein.

Blood samples were drawn from an antecubital vein by atraumatic puncture into plastic tubes using a two-tube technique, discarding the first 4 to 5 ml. Whole blood was anticoagulated by the ...