Blood loss during major surgery is best estimated by -: (A) Visual assessment, (B) Suction bottles, (C) Transesophageal USG Doppler, (D) Cardiac output by thermodilution
Answer is B. Blood loss during operation is measured by -
Weighing the swabs after use and subtracting the dry weight + Volume of blood collected in suction or drainage
This is k/a Gravimetric method of estimation of blood loss