Hypoparathyroidism vs Hyperparathyroidism: NCLEX Pathophysiology Endocrine Review with Nurse Blake

Nurse Blake introduces hyper- and hypoparathyroidism, explaining that parathyroid glands (P) are located near the thyroid and are responsible for regulating blood calcium (C) levels. They explain that 'hyper' means high and 'hypo' means low, while 'para' means alongside the thyroid. Normal calcium levels are typically 9.0 to 10.5, though some textbooks may vary. The key takeaway is that Parathyroid Hormone (PTH) and calcium levels move in the same direction: if PTH is high, calcium is high, and vice versa. PTH puts calcium high in the blood.

PTH increases blood calcium through three mechanisms, remembered by the acronym BIR: Bones (draining calcium from bones to increase blood levels, making bones brittle), Intestines (absorbing calcium from food with the help of vitamin D), and Kidneys (reabsorbing calcium and preventing its loss). Calcium, magnesium, and vitamin D are often found together in supplements due to their synergistic relationship.

With hyperparathyroidism (too much PTH), there's too much calcium in the blood, leading to 'stones, moans, and groans'. 'Stones' refers to kidney stones (renal calculi) because the kidneys are overloaded trying to filter out excess calcium. 'Moans' refers to fractured bones due to calcium being drained from them, making them weak. 'Groans' refers to severe constipation (rock-hard bowels) as the intestinal tract is overloaded with calcium. Essentially, everything is swollen and slow with high calcium.

Hypoparathyroidism results in hypocalcemia (low calcium). The video states that hypoparathyroid patients will exhibit signs and symptoms exactly like hypocalcemia patients, summarized as 'Baja California' (low, low calcium), though specific symptoms of hypocalcemia are not detailed in this segment.