subdural empyema, 1389 –1390 venous infarcts, 1390 ventriculitis, 1389 Hydrochlorothiazide, 531 Hydrocortisone, for adrenal insufficiency, 84 Hydroxychloroquine, 1015 Hyperadrenalism, 560 Hyperammonemia, 126 , 482 , 872 Hyperbilirubinemia, 930 Hypercalcemia, 926 Hypercalciuria, 238 –239 , 531 Hypercapnia, 478 Hypercarbia, 120 Hyperchloremia, 80 Hypercoagulability, 798 –801 Hyperdynamic cardiac activity, 424 Hyperglycemia, 655 , 658 –660 , 1100 Hyperglycemic hyperosmolar nonketotic syndrome, 121 Hyperleukocytosis, 906 Hyperlipidemia, 366 Hypernatremia, 502 Hypernatremic dehydration, 1036 Hyperoxia, 49 Hyperparathyroid, 671 –673 Hyperparathyroidism, 130 , 560 Hyperpigmentation, 465 –466 , 570 Hyperprolactinemia, 342 , 344 Hyperpronation, 1374 Hypertension diagnostic approach to, 242 f differential diagnosis, 240 –241 evaluation and decision, 241 –242 management, 242 –243 pathophysiology, 240 –241 prevalence of, 240 specific therapy, 243 –246 , 244 t, 246 f clevidipine, 245