DeCa Hospital is an alternative communication system (AAC system) for interaction between doctors, nurses and intensive therapy patients who are currently awake but cannot speak. According to interviews with resuscitators, there are 30% of such patients in intensive therapy: patients with tracheostomy, patients after surgery, patients on non-invasive mechanical ventilation, patients with hearing and speech impairments, etc. The app interface was developed with the participation of expert resuscitators and takes into account the basic needs of bedridden patients in consciousness. For the doctor it is also an additional diagnostic tool.