Bernd and Hermann talk us through their research into performing CPR with restricted patient access.    Three top tips   1 - In an asphyxiated patient start ventilation as soon as possible      2 - In a situation of restricted patient access, don't think about standard CPR, start ventilation asap, even if in a really awkward or alternative position. 3 - Even minimal training makes a difference so regular training and practice of CPR is crucial and should be included in other training, such as avalanche training courses.   Biographies:   Hermann Brugger MD, born in Bruneck / Bolzano / Italy, December 30th, 1951; married to the painter Elfriede Gangl, 1978; children: Franz, Johanna. MD at the University Vienna, Austria, 1978; Medical assistant at the Hospital Sisters of Charity, Linz, Austria, 1979-1983. General Practitioner at the National Health Service, Bruneck, Italy, from 1983 to 2017. Emergency physician for the Emergency Medical System and mountain rescue physician of the Mountain Rescue Organization of South Tyrol from 1983 to 2017. Eduard Wallnöfer Prize Tyrolean Industry, 1992; Georg Grabner Prize University Vienna, 1995; Research Award of the Wilderness Medical Society USA, 2012; Paul Auerbach Award Wilderness Medical Society USA, 2016. Member of the Board of the Italian Society of Mountain Medicine, 1999-2005; Member of the Board of the Medical Commission of the Union Internationale des Associations d’Alpinisme UIAA MEDCOM, 2001-2009; President of the International Commission for Mountain Emergency Medicine ICAR MEDCOM, 2001-2009; Member of the Board of the International Society of Mountain Medicine ISMM, from 1999; President of the International Society of Mountain Medicine ISMM, from 2016; Member of the International Commission for Mountain Emergency Medicine ICAR MEDCOM, from 1991; Associate Editor of High Altitude Medicine and Biology, from 2001; Guest lecturer University Padova, from 1999; Associate Professor and lecturer at the Innsbruck Medical University, from 2006; Founder and head of the EURAC Institute of Mountain Emergency Medicine at the European Academy Bolzano, Italy, from 2009. President of the International Society of Mountain Medicine ISMM, from 2016.   Around 60 book chapters, 280 publications (current cumulative IF [2020-10-27]: 869) in emergency medicine.