Final answer:
Narcissistic personality disorder is characterized by a pervasive pattern of grandiosity, a need for admiration, and a lack of empathy. Individuals with this disorder often prioritize their own needs and desires above others. Damage to certain areas of the brain, such as the prefrontal cortex, may contribute to the development of narcissistic personality disorder.
Step-by-step explanation:
The behavior described in the question may be indicative of narcissistic personality disorder. This disorder is characterized by a pervasive pattern of grandiosity, a need for admiration, and a lack of empathy. Individuals with narcissistic personality disorder often have an exaggerated sense of self-importance and may prioritize their own needs and desires above others'. They may also have difficulty accepting criticism and may seek constant validation and admiration.
In the case of the CEO described, his refusal to allow residents to operate on him and his insistence on speaking with the Chief of Trauma Surgery may reflect his need to maintain control and a sense of superiority. Additionally, his behavior of making business phone calls in the ED despite being in a medical emergency suggests a lack of regard for others and a prioritization of his own interests.
Research has shown that certain areas of the brain, such as the prefrontal cortex, play a role in personality. Damage to these areas can lead to changes in personality, as seen in cases like that of Phineas Gage. Although more research is needed to fully understand the neurobiology of narcissistic personality disorder, it is likely that alterations in brain function contribute to the development of this disorder.