Final answer:
The subject of this question is Medicine, and the grade level is High School. This question is about the complications that can occur after a recent angiography or cardiac catheterization, including acute renal failure and other associated symptoms.
Step-by-step explanation:
The subject of this question is Medicine and the grade level is High School.
The symptoms and conditions mentioned in the question suggest that the patient may be experiencing a complication known as catheter-induced acute renal failure. This occurs when the catheter used during the angiography or cardiac catheterization procedure causes damage to the kidneys, leading to a sudden decrease in kidney function. The other symptoms mentioned, such as livedo reticularis, cerebral and intestinal ischemia, and Hollenhorst plaques, may be associated with the underlying condition that required the cardiac catheterization.
It is important for the patient to seek medical attention to properly diagnose and manage the renal failure and other symptoms. Further tests and treatment options will be recommended by medical professionals based on the specific case.