Open-angle glaucoma. Chronic open-angle glaucoma is the most common form of glaucoma. The open drainage angle of the eye can become blocked leading to gradual increased eye pressure. If this increased pressure results in optic nerve damage, it is known as chronic open-angle glaucoma.
Acute tubular necrosis. Acute tubular necrosis (ATN) is a medical condition involving the death of tubular epithelial cells that form the renal tubules of the kidneys. ATN presents with acute kidney injury (AKI) and is one of the most common causes of AKI. Common causes of ATN include low blood pressure and use of nephrotoxic drugs.
Definition: The term acute abdomen refers to abdominal pain that begins suddenly and is severe in nature. The Acute Abdomen There are many causes for the abrupt onset of abdominal pain, also known as an acute abdomen.