Here's a breakdown:
* "After his operation": Indicates that the individual has recently undergone surgery.
* "He would list to port when stood up": This means that when he stood up, his body would tilt or lean to the left. "Port" is a nautical term referring to the left side of a ship.
* "and starboard sat down": Similarly, when he sat down, his body would tilt or lean to the right. "Starboard" refers to the right side of a ship.
Postural hypotension is a condition where blood pressure drops significantly when standing up quickly. This can lead to dizziness, lightheadedness, and even fainting. The tilting to the left or right is likely a result of the body trying to compensate for the sudden drop in blood pressure.
Important Note: This is a hypothetical example, and it's crucial to remember that medical conditions should always be diagnosed and treated by a qualified healthcare professional.