When Travis has the non-re-breather oxygen mask on the bag is totally deflated. When a non-re-breather mask is used and connected to oxygen the bag connected to the mask fills with oxygen and is inflated like a balloon and stays that way the entire time the patient is using it.
While Benton and Romano are getting ready for surgery, the shadow of the boom mic follows them around and is seen on the upper walls.
Carter was totally out of line to question Lucy's use of Ritalin for her ADHD without knowing her medical history, plus he demonstrated that he is rather ignorant of how the drug works in people with ADHD. He told her that Ritalin is stimulant and is something used for hyperactive kids, implying that if she is still taking it as an adult she must be addicted to it. Methylphenidate (Ritalin) is an amphetamine-like simulant and can be abused for its euphoric and stimulant effects, which is why it is a Schedule II controlled substance, but when taken at therapeutic doses by someone with ADHD it has what is known as a paradoxical effect. Most people that take a stimulant like amphetamines or methylphenidate have their CNS activity increased, but for people with ADHD it has the opposite effect of calming and regulating CNS activity which helps them to focus better. It is not just prescribed to children, though that is the most common age range it is used in as most children outgrow ADHD; however not all do, some people continue to have ADHD their entire lives and rely on drugs like Ritalin or Adderall to function normally.