<prompt> Maximal level of cardiac output is seen at:September 200922-26 weeks of pregnancy26-30 weeks of pregnancy30-34 weeks of pregnancy34-38 weeks of pregnancy  <response>: Ans. C: 30-34 Weeks of PregnancyThe cardiac output stas to increase from 5th week of pregnancy and reaches its peak 40-50 at about 30-34 weeks. Cardiac output increase fuher during labour 50 and immediately following delivery 70 It returns to pre-pregnancy level by 4 weeks time after labour. 