pelvis/femur, radiograph of, 1178 f sternoclavicular dislocation, 1181 f thoracolumbar spine, 1209 –1212 See also Thoracolumbar spine injuries upper extremity motor nerve, 1193 f wrist, sensory innervation of, 1193 f Mushroom toxicity, 1066 –1067 Myasthenia gravis (MG), 131 , 178 , 330 , 558 , 564 , 895 Mycobacterial infection, 321 Mycobacterium avium-intracellulare (MAI), 321 Mycobacterium scrofulaceum , 321 Mycoplasma-induced rash and mucositis (MIRM), 351 , 456 Mycoplasma infection, 645 Mycoplasma genitalium, 545 Mycoplasma pneumoniae, 351 , 411 , 475 , 508 , 558 , 572 , 891 , 893 , 1320 Mycoplasma infections, 645 Mydriasis, 124 , 183 f local factors, 185 neurologic factors, 185 –186 unilateral, 182 Myocardial contusion, 1279 Myocardial infarction (MI), 366 –367 , 615 Myocardial ischemia, 366 –367 Myocarditis, 355 , 368 , 426 , 527 Myoclonic seizures, 883 Myoglobinuria, 560 Myopathies, 559 –560 Myotonic dystrophy, 560 N N -Acetylcysteine (NAC), 292 –293 , 1037 , 1042 N -acetylcysteine enemas, 132 N -acetyl-p -aminophenol (APAP) See Acetaminophen N -acetyl-p -benzoquinoneimine (NAPQI), 293 Nail bed injuries, 1143 , 1145 –1147 , 1147 f, 1167 –1168 , 1344 Nail bed lacerations, 1167 –1168