City of Moscow. 1980. All-Union Scientific Center of Surgery of the Academy of Medical Sciences. Academician BV Petrovsky preparing for surgery. Pressure chamber for operations on the heart. Artificial heart, and other devices. Operation on the heart in a pressure chamber. Petrovsky talking with doctors. City of Moscow. MD, Ph.D., professor, corresponding member of Academy of Medical Sciences, head of surgical department of the City Children's Clinical Hospital named after IV Rusakov S. Ya Doletsky makes doctor's round in the office, talking with doctors hospital (synchronously).