pleural effusions and, 369 postpericardiotomy syndrome and, 369 pulmonary diseases and, 369 radiating to back, jaw or left arm, 374 spontaneous pneumomediastinum and, 369 workup of, 374 Chest, subcutaneous emphysema of, 1228 f Chest wall, 481 –482 injuries, 1282 –1283 tumors malignant, 1424 f thoracic emergencies, 1422 –1423 Cheyne–Stokes respirations, 123 , 486 Chiari malformations/myelomeningoceles, 557 Chief complaint, , 10 –11 , 22 –23 , 23 t, 24 , 27 , 30 , 157 , 224 Child abuse, 504 –505 abdominal trauma, 1092 –1093 cutaneous manifestations, 624 –625 emergency care, goals, 620 fractures, 627 injuries from physical abuse, 620 –624 ocular trauma, traumatic iritis, 1272 oropharyngeal injuries, 625 –627 rib fractures, 1283 Child maltreatment, 624 Child physical abuse, 620 –624 , 627 , 629 Chin-lift or jaw-thrust maneuver, 29 Chipmunk facies, 419 Chlamydia, 312 , 543 conjunctivitis, 852 neonatal, 851 trachomatis , 254 , 383 , 402 , 411 , 530 , 537 , 543 , 545 –546 , 1338 Chloramphenicol, 442 Chlorhexidine, oral rinses, 1315 Chloroma, 906 Cholecystitis, 292 , 354 , 358 , 736 Choledochal cysts, 293