Occlusion of this opening is referred to as distal tubal occlusion. Occlusion at this opening is referred to as proximal tubal occlusion. Complications may include seizures, disseminated intravascular coagulopathy, mesenteric artery occlusion, or rhabdomyolysis. The administration of adenosine also reduces blood flow to coronary arteries past the occlusion. In metastasizing tumors with intrahepatic growth, hepatic arterial occlusion or embolization can be used. Other complications may include catheter occlusion, phlebitis and bleeding. This may develop into stenosis and occlusion. Other possible causes of deprivation and occlusion amblyopia include obstruction in the vitreous and aphakia. According to an autopsy, Cox died of a heart attack caused by a coronary occlusion. Her physician reported that she had suffered a heart attack following a coronary occlusion. This shape is due to the blockage/occlusion of small arteries. Level of pain is related to the degree of luminal occlusion. On 2 September 2015, Schmidt underwent surgery for a vascular occlusion in his right leg. Evidence suggests that atropine penalization is just as effective as occlusion in improving visual acuity. Competing methods for scale invariant object recognition under clutter / partial occlusion include the following.