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Barcelona Team Implants World’s Smallest Pacemaker in 2.1‑Kilogram Newborn

A rapid, case‑specific authorization enabled a tailored AVEIR‑based device to be placed hours after birth.

Overview

  • Hospital Sant Joan de Déu says the two‑centimeter device, adapted from Abbott’s AVEIR platform, was implanted within hours of the February 2 birth.
  • Fetal monitoring had identified complete atrioventricular block with severe bradycardia and cardiac dilation, prompting an early delivery.
  • A provisional pacemaker stabilized the baby, followed by definitive implantation by a multidisciplinary team led by surgeon Stefano Congiu with 16 specialists and engineers.
  • Spain’s medicines agency AEMPS granted urgent authorization in about five hours for the bespoke device, according to the hospital.
  • After 20 days in hospital, the infant was discharged in stable condition, and doctors expect a normal life with periodic follow‑up as standard six‑centimeter units are too large for newborns.