Pentothiol sodium should preferablay be injected into –
Inadverent intra-arterial injection occurs when thiopentone is injected in antecubital vein because in 10% of the cases brachial artery divides above elbow giving a very superficial abnormal artery which lies deep to antecubital vein. Therefore thiopentone injection should be given in the veins over the outer aspect of forearm (not in antecubital vein).
Femoral vein
Antecubital vein
Neck vein
Veins on outer aspect of fore arm