 Similarly, a recent retrospective study of 1900 patients in UK, demonstrated that patients do not need to be NPO prior to Percutaneous Coronary Intervention PCI. Another study has demonstrated that reduced gastric pH 2.0 and increased gastric volumes predisposed to pulmonary aspiration. Invasive procedures such as angiography and angioplasty both are associated with a small risk of adverse events. One such adverse event is vasovagal reaction which occurs in 3-4 of patients and may be exacerbated by depletion of volume as seen in the fasted state . 