Final answer:
The default type of pain for post-thoracotomy and post-operative conditions unspecified as acute or chronic is generally considered acute pain, due to tissue damage from the surgery.
Step-by-step explanation:
The default assumption for post-thoracotomy and other post-operative pain when not specified as acute or chronic is typically considered acute pain. This is because surgical procedures are expected to cause pain due to tissue damage and inflammation that occurs as a result of the operation. Acute pain is usually of a shorter duration and is expected to diminish as the healing process takes place. Effective pain management post-operatively is crucial for patient comfort, quicker recovery, and to minimize the risk of developing chronic pain.