Heart surgery. Surgeon carrying out minimally- invasive surgery (MIS) on a coronary artery,an artery that supplies blood to the heart. The artery has an aneurysm (ballooning) due to abnormally high arterial tension,or angiohypertonia. The surgeon is moving a thin tube called a microcatheter along the artery. He is watching its progress on the angiograms,arterial X-rays,seen on the four round screens above the patient. The microcatheter may be used to insert an artificial tube through which the blood will flow. MIS,or keyhole surgery,is carried out through a small incision,reducing pain,scarring,the risk of infection and the recovery time |