Ultra-realistic portrait of Gabriel, a man in his 40s with a slim build

Ultra-realistic portrait of Gabriel, a man in his 40s with a slim build. He has dark brown hair with a few gray strands and eyes full of fear and regret. His face is pale and thin, reflecting vulnerability. The portrait should be from the waist up. Gabriel is lying in a hospital bed, surrounded by medical machines and vital signs monitors. The background should be a hospital environment, with neutral walls and medical equipment visible but out of focus, so as not to distract from the main subject. The lighting should be soft and diffuse, with a cold light coming from above, creating subtle shadows that accentuate Gabriel's fragility. The light should highlight the eyes and the texture of the skin, emphasizing the gravity of the situation. The image should convey a sense of fragility and regret, with a touch of tension. Suggest a cool color palette, such as blues and grays, that complements the serious and reflective atmosphere of the hospital environment. The photo should be of high quality, with 8k rendering and extreme detail, maintaining the desired atmosphere and capturing the emotional essence of the moment.