Diffuse axonal injury (DAI), 270 , 1254 Diffuse B-cell large cell lymphoma, 910 Diffuse injury, 1257 Diffuse lymphadenopathy, 1013 Diffusion-weighted imaging (DWI), 1256 Digital subtraction angiography, 1407 Digoxin, 1045 Dihydroergotamine (DHE), 887 Diphtheria, 847 Direct immunofluorescence assay (DFA), 1343 Direct laryngoscopes, 37 –38 blades, 37 selection of, 38 handles, 37 Direct medical control, 9e Direct ocular trauma, 171 Dirty bomb, 704 Discharge instructions, 1164 , 1164 t, 1175 , 1191 , 1e comprehension and retention of, obstacles to, 2e follow-up and, 3e formats of, 1e –3e combination method, 2e multimedia technology and, 2e verbal instructions, 1e written instructions, 1e –2e legal and regulatory considerations, 1e legal considerations, 1e literacy and language comprehension in, 3e meaningful use of, 1e medications and medication reconciliation and, 3e for nonnative English-speaking patients, 3e principles of, 1e Discitis (diskitis), 328 , 362 –363 , 1375 –1377 intervertebral disc space, 1376 f osteomyelitis, 1387 –1388 Disease-modifying antirheumatic drugs (DMARDs), 1014 , 1014 t Displaced teeth, 1107 –1109