Low blood pressure, also known as hypotension, occurs when the force of blood pushing against the artery walls is too low, typically defined as below 90/60 mm Hg. Unique Chips Chaat Video: While many ...

HOUSTON (Reuters) - Mud on the lens of the camera providing video images of the pipe gushing oil into the Gulf of Mexico has blocked the view of the attempt to stop the spill, BP Plc said on Thursday.