An Argentine nurse has been sentenced to life in prison after being found guilty of murdering five newborn babies at a hospital in the central city of Córdoba, in a chilling case that has shocked the nation and raised serious concerns about neonatal care oversight.
Lucía Aráoz, 29, was convicted by a provincial court following a months-long trial during which prosecutors detailed how she deliberately injected air into the veins of healthy newborns, causing fatal embolisms. The crimes occurred over a two-month span in 2022 at the Ramón Carrillo Maternal Hospital, where Aráoz worked in the neonatal unit.
“This was a calculated and cold-blooded series of killings committed by someone entrusted with the care of the most vulnerable,” presiding Judge Mateo Ledesma said during sentencing. “The court finds no mitigating circumstances.”
The victims—all full-term babies born without complications—died suddenly and without medical explanation, prompting internal reviews and an eventual criminal investigation. Suspicion quickly fell on Aráoz after surveillance logs and staffing records showed she was on duty during each unexplained death.
Forensic examinations later confirmed that the infants died from air embolisms, a rare and unnatural occurrence.
Prosecutors described Aráoz as a “silent predator” who exploited her medical knowledge to carry out the killings without immediate detection. A psychological evaluation found her fit to stand trial, though investigators could not definitively establish a motive.
The defense had argued that the deaths were coincidental and raised questions about possible systemic failures at the hospital, but the jury was unanimous in its decision to convict on all five counts of premeditated murder.
The trial also reignited national debate over healthcare regulation, hospital staffing practices, and the mental health screening of medical professionals in high-stress environments.
Argentina’s Ministry of Health has since launched a comprehensive review of neonatal protocols and oversight mechanisms in public hospitals.
Outside the courtroom, grieving parents of the victims wept and embraced as the verdict was read. Several said the sentencing brought a measure of justice but could never undo their pain.
“She took our daughter’s life for no reason. Nothing will bring her back, but today we feel heard,” said Marcelo Ruiz, whose baby girl, Valentina, was one of the victims.
Aráoz showed no visible emotion as she was led away from the courtroom in handcuffs. Under Argentine law, she will spend the rest of her life behind bars without the possibility of parole.
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