When an Electroencephalogram (EEG) is ordered, what type of disorder is the physician concerned about?

When an Electroencephalogram (EEG) is ordered, the physician is primarily concerned about neurological disorders. An EEG is a diagnostic test that measures electrical activity in the brain. It is particularly valuable in assessing conditions such as seizures, epilepsy, sleep disorders, and other brain-related issues. By analyzing the brain's electrical impulses, healthcare providers can identify abnormal patterns that indicate various neurological conditions.

In contrast, the other options relate to different bodily systems. Muscular disorders, while potentially affecting movement and muscle function, are not assessed using an EEG. Cardiovascular disorders involve the heart and blood vessels, and while they may influence brain function indirectly, they do not primarily involve the brain's electrical activity. Respiratory disorders relate to the lungs and breathing and do not fall under the scope of what an EEG examines. Therefore, the focus of an EEG being on brain activity makes neurological disorders the correct concern for this diagnostic procedure.