Background:

There is a paucity of information about morbidity and mortality of adolescents with Down syndrome (DS).

Aim:

To describe morbidity and mortality of a cohort of Chilean adolescents with DS.

Material and Methods:

Review of electronic clinical records of 67 ambulatory patients with DS aged 10 to 20 years (37 women), seen between the years 2007 and 2014 in outpatient clinics of a University hospital.

Results:

The mean age at the last consultation was 13 ± 3 years. Ninety-eight percent of patients had a chronic condition: 37.1% where overweight or obese, 58.2% had a congenital heart disease, 11.9% where being evaluated or had the diagnosis of autism and 44.8% had hypothyroidism. Pubertal development was consistent with chronologic age in 93.7% of patients. In three patients puberty had been suppressed. In women, average age of menarche was 12.2 ± 1.1 years. There were no deaths reported.

Conclusions:

There was a high rate of comorbidities in this group of adolescents with DS, most of them with frequencies comparable to those reported in literature.