Overview
- A January 2 medical bulletin from Hospital Alemán states Petersen remains hospitalized under multidisciplinary care and has had no new complications.
- Doctors are proceeding with planned evaluations, and the hospital says it will keep his family informed while safeguarding medical confidentiality.
- Petersen suffered a severe altitude-related collapse during a December ascent of Volcán Lanín that progressed to multiorgan dysfunction and required ICU care in Neuquén.
- He was transferred by air ambulance to Buenos Aires on December 26 for higher-complexity treatment, where his condition has stabilized.
- Lanín guide Roberto “Ro” Catalá and the Argentine Mountain Guides Association used the episode to warn against summit attempts for selfies, citing risks to climbers and rescuers.