<prompt> The commonest prostaglandin used for the termination of 2nd trimester pregnancy:PGE1PGI2PGA215 methyl PGF2  <response>: Methods of termination of pregnancy: Second Trimester 13-20 weeks:Intrauterine instillation of hypertonic solutionsIntra amniotic à 20 saline, 40 urea mannitolExtra amniotic à Ethacrydine lactateProstaglandins F2a and E2Oxytocin infusionHysterotomy 