Hypoglycemia, 80 , 494 , 502 –503 , 520 , 660 –662 , 693 , 1031 , 1035 as apnea, 102 in neonate, 67 Hypokalemic periodic paralysis, 896 Hyponatremia, 560 Hyponatremic hypovolemia, 967 Hypoparathyroid, 673 –674 Hypoparathyroidism, 560 Hypopigmentation, 465 Hypopituitarism, 662 –663 Hypoplastic anemia, 418 –419 Hypoplastic left heart syndrome (HLHS), 501 –502 , 595 Hypopyon, 190 Hyposthenuria, 428 Hypotension, 124 , 341 , 485 Hypothalamic–pituitary axis disorders, 344 –345 Hypothalamic–pituitary–ovarian axis, 536 Hypothalamic tumors, 907 Hypothermia, 682 , 693 Hypothyroidism, 130 , 345 , 560 Hypotonia, 556 Hypotonic dehydration, 149 Hypovolemia, 1091 , 1099 , 1295 Hypovolemic shock due to diarrhea, 84 history and physical examination findings, 76 management source control, 81 POCUS findings, 76 Hypoxemia, 102 , 480 , 680 causes of, 29 management of, 44 respiratory support during, 35 Hypoxia, 478 Hypoxic coma, 120 I