Attending in Emergency Department(AED)

A 42 y/o female patient c/o sudden onset of epigastric pain since last night. PE showed marked epigastric tenderness but no rebound pain. BS is hypoactive. One of our resident check the patient and order a plain abd view and showed much stools but no free air. Primperan IV and eva enema is given by order. When I performed the bedside ultrasound, I found a lot of interruption echoic lying over right liver. I turn the patient to left decubitus view and showed free air in subphrenic area. Of course, my favorite X ray for diagnosis PPU-- chest left decubitus view first followed by standing CXR and standing plain abd. Since the patient cannot stand up for x ray examination(a hint for diagnosis of PPU), we take only the first 2 x rays and that are sufficient for diagnosis and finally call the surgeon for emergent operation. Operation findings showed PPU of course.
My ultrasound experience: Left decubitus position perform ultrasound>> If free air seen>> Go for X ray for chest left decubitus view>> standing CXR and standing plain abd.