If a patient is in a bad mood, their medical procedure may not go as smoothly, according to a new study. Feeling anxious, stressed or all-around crummy could impact the outcome of a surgical procedure like an angioplasty, suggests the research, which was presented at the annual meeting of the Radiological Society of North America. In the study, the researchers looked at 230 people who underwent minimal vascular and kidney procedures where a catheter was inserted into a blood vessel.