The document discusses applying Sister Calista Roy's Adaptation Model to help patients adapt after femoral artery cannulation. It describes how the nurse helped a patient by explaining what was happening, encouraging them, giving advice, and ensuring they took their medicine to reduce pain and loneliness and increase comfort and self-care abilities. The inputs were the patient's pain, loneliness and tiredness. The nurse's role as a control was to provide explanation, encouragement and advice. This led to improved outputs of the patient sleeping well, feeling confident and comfortable, and not being afraid while caring for themselves and asking questions.