Rains factor is used for measurement of blood loss in operations or minor procedures . It is: (A) Total difference in swab weight x 0.5, (B) Total difference in swab weight x 1.5, (C) Total difference in swab weight x 2.5, (D) None of the above
Answer is B. Rains factor Total amount of blood loss = Total difference in swab weight x 1.5 Or Total difference in swab weight x 2 (for larger wounds or operations ) Ref : Srb's manual of surgery p/ 120