求翻译：结论：老年食管癌患者手术后发生精神障碍的原因除年龄因素外，主要有个体因素、环境因素、手术创伤、身体状态的改变等，及时采取有针对性的预防及护理措施，能够减少术后精神并发症的发生率，提高老年食管癌手术治疗效果。是什么意思？

Conclusion: the causes of mental disorders in elderly patients with esophageal carcinoma after operation among age, mainly individual factors, environmental factors, such as surgical trauma, physical changes in the State of, targeted prevention and care measures are taken in a timely manner, to reduce the incidence of postoperative mental complications, improving the effect of surgical treatment for esophageal carcinoma in the elderly.