What time period is it most difficult for imaging studies to diagnose hematometra, post ablation endometriosis, and post ablation tubal sterilization syndrome

Which of the following positions is used during the immediate postoperative recovery of pediatric tonsillectomy patients? a. supine, with head extended up b. lateral, with a slight head-down tilt c. supine, with head turned to the side d. trendelenburg, with head turned to the side