<prompt>  The four points of probe placement in Focused Abdominal Sonogram for trauma FAST in blunt thoraco-abdominal trauma are -Epigastrium, R hypochondrium, L Lower chest, hypogastriumEpigastrium, R and L Hypochondria, R Iliac fossaEpigastrium, R and L Lumbar regions, hypogastriumHypogastrium, R and L Lumbar regions, R lower chest 