<prompt> A patient presents with right to left shunt. Oxygen content in aerial and venous side are 18 and 14 ml100 ml respectively. Oxygen content at pulmonary capillary is 20. What is the percentage shunting of cardiac output?23334353  <response>: Normal O2 content Aerial - 20ml Venous - 14 ml Aeriovenous difference - 6 ml In the given condition, O2 content Aerial - 18 ml Venous - 14 ml Aeriovenous difference - 4 ml i.e. 13 of the normal is reduced in the given shunting. So, there will be a reduction of 33 or 2 ml 