In limb what amount of pressure is applied to prevent venum migration in snake bite: (A) <10 mm of Hg, (B) 20-30 mm of Hg, (C) 40-70 mm of Hg, (D) >100 mm of Hg
Answer is C. Pressure immobilisation technique: A bandage is applied over the wound which is loose enough to fit one finger in. The pressure of bandage should be maintained in 50-70 mm Hg. This procedure (Sutherland wrap) is to occlude the lymphatic circulation without impeding the aerial or venous flow. Ref: FORENSIC MEDICINE AND TOXICOLOGY DR PC IGNATIUS THIRD EDITION PAGE 520