traction splint to stabilize femoral fractures, 1200 f pelvis injuries, 1196 , 1197 f acetabular fractures, 1197 avulsion fractures, 1196 , 1197 f clinical assessment, 1196 clinical recognition, 1196 disposition, 1197 evidences, 1196 management, 1196 –1197 pelvic ring fractures, 1196 triage considerations, 1196 proximal tibial epiphyseal fractures, 1203 metaphyseal fractures, 1203 tibial/fibular shaft fractures, 1204 toddler’s fractures, 1204 Lower GI bleeding, 728 –730 differential diagnosis, 217 –219 etiology of, 217 t evaluation and decision diagnostic approach to, 219 –220 , 220 f history and physical examination, 219 laboratory testing, 219 in older children and adolescents, 218 –219 in preschool (2 to years), 218 Lucey–Driscoll syndrome, 299 Ludwig angina, 322 , 348 Ludwig’s angina, 349 t LUMBAR syndrome, 464 Lumbosacral lesions, 1355 Lung tumors, 910 Lupus anticoagulant, 997 Lupus nephritis, 982 Lurasidone, for schizophrenia, 1442 Lyme disease, 301 , 402 , 406 , 891 , 897 , 1362 Lyme titers, 1362 Lymphadenitis, 253 –254 , 309 , 909