<prompt> You are examining a postoperative patient who believed to have lost 20 of his blood. What change if any would you expect in his BP and hea rate?Hea rate increased, BP reducedHea rate increased, BP normalunchangedHea rate normalunchanged, BP reducedHea rate unchanged, BP unchanged  <response>: The change in BP and pulse rate in relation to of blood loss is given below: Blood loss BP Hea rate 15 no change slight increase 15 - 30 no change 100 - 120 30 - 40 reduced 120, weak pulse 40 markedly reduced 120, thready pulse Ref: Bailey, Edition 23, Page 235 