Final answer:
The best position, unless contraindicated, for a patient to be placed in after a surgical procedure to prevent respiratory complications is High-Fowler's position. This position helps to reduce the risk of aspiration and facilitates optimal lung expansion.
Step-by-step explanation:
The best position, unless contraindicated, for a patient to be placed in after a surgical procedure to prevent respiratory complications is High-Fowler's position. In this position, the head of the bed is elevated to an angle of 90 degrees or more, allowing the patient to sit almost upright. This position helps to reduce the risk of aspiration and facilitates optimal lung expansion.