<prompt> Heart disease with worst prognosis for mother and fetus in pregnancy is -Mitral regurgitationEisenmengers complexCoarctation of aortaMitral stenosis  <response>: Ans. is b Eisenmenger complex. This has been explained already that worst prognosis in pregnancy is associated with pulmonary hypertension and in Eisenmenger complex pulmonary hypertension is a prominent feature. 