Seven hours in Monterrey, and then a boy named Patricio heard

In an operating theatre in Monterrey, a team of ten worked for seven hours on a two-year-old boy who had never heard a sound. Four weeks later the processors were switched on. His mother, Blanca Patricia, had been told the same procedure in a private clinic would cost up to one million pesos per ear.

The hospital was UMAE No. 25, part of the Centro Médico Nacional del Noreste, a building in the Mitras Norte neighbourhood that has been taking referrals since 1980. It serves four northeastern states and just over nine million people insured by IMSS. Until that morning, none of them could have a cochlear implant placed there. Families who needed one travelled to Guadalajara, or paid, or did without.

Patricio's implants were activated on 28 August. Until that day he had lived entirely inside silence.

"I am very, very grateful to the institution. I tell them IMSS opens worlds."

His mother said it plainly, the way people say true things. She knew the arithmetic of the alternative.

That such a surgery counts as a first is itself the story. Mexico placed its first cochlear implant in 1987. But IMSS, which insures a large share of the country, had no institutional path to one until June 2024, when its Consejo Técnico reinterpreted the Social Security Law to allow children and adolescents with hearing disability to receive the devices. The first surgical session followed that autumn in Guadalajara: fifteen children, from Tabasco, Querétaro and Coahuila, operated on during weekend sessions because the regular schedule had no room.

Guadalajara has since reached 82 implants. The protocol there is exacting — the processor is switched on fifteen days after surgery, check-ups every two months, and 96 language-therapy sessions assigned to each child, because an implant delivers sound but not yet meaning. A child must be taught to hear.

Monterrey's operation opens the second such programme in the country, and with it the Cochlear Implant Program for IMSS Nuevo León. Dr. María Belén Alonso, who heads otorhinolaryngology at the hospital, and the audiologist Karina Firo Guadarrama will carry it forward for the children of the northeast who come after Patricio. There are, as of February, thirteen children on the national list, waiting.