Providing “comprehensible” medical information to parents of ill newborns in Neonatal Intensive Care Units (NICU) is not simple. Parents may consider they had received complete, detailed information; partial, insufficient or inaccurate information; no information at all or“excessive” information with very complex medical details. What parents perceive in a parent-medical interaction (“No one ever talked to me about that!”) may not coincide with the MD's or RN's perception. This issue may be even worse when there are cultural and language differences. The aim was to assess the degree of comprehension (as perceived by parents) of Latin American parents of low socio-economic class, whose babies needed very special treatments in two different NICU's. Parents (n=77) of infants receiving high frequency ventilation(n=14), unapproved medical treatments(n=7), surgery: for PDA(n=16), NEC(n=10), congenital abdominal(n=4),thoracic(n=6) and heart lesions(n=12) and/or ECMO(n=8) were included. The approach was informal, with simple questions to generate short answers and questions to stimulate narrative descriptions (two personal conversations in Spanish, 24-96 hours after the procedure/therapy). All parents understood their baby was “very sick” and >90% felt satisfied because “Drs are doing everything possible”. However, 90% were not able to describe what was done (even though for surgical and experimental cases an “informed” consent had been signed). Parents said that someone had spoken to them (directly or with interpreter) but that they did not understand. The majority (85%) felt Drs. went “too fast”. More than 40% had told the MD, RN or MSW that they had understood, when they actually hadn't, 30% told them they did not understand and about 40% were never asked. In three cases a family relative acted as translator and they accepted that they did not translate correctly in order“not to upset parents as much”. No parent of babies with ECMO or heart surgery had understood what was their baby's lesion nor the procedure performed. In 30% parents had fantasies of “the baby's heart being changed” and of “all the baby's blood having been gone for ever.” These data show that this underserved population needs to receive better communication during crisis. Even though they feel satisfied with care provided, they are “ignorant” of therapies and procedures performed to their babies. By better serving them, consent would be really“informed” more frequently.