View Entire Collection By Clinical Topic Diabetes – Summer 2012
Future of Nursing Initiative Heart Failure - Fall 2011 Influenza
- Winter 2011 Nursing Ethics - Fall 2011 Trauma - Fall 2010
Traumatic Brain Injury - Fall 2010 Fluids & Electrolytes MYTH:
Parathyroid hormone (PTH) breaks down bone, so PTH injections
don't help treat osteoporosis. FACT: Hyperparathyroidism, which
involves PTH hypersecretion, can lead to bone demineralization
and pathologic fractures. But once-daily PTH injections have the
opposite effect: They stimulate new bone formation leading to
increased bone mineral density. This paradoxic effect appears to
be related to the rapid rise and fall of serum PTH levels when
the hormone is given as an injection, in contrast to the
consistently high level caused by hyperparathyroidism. The
parathyroid glands secrete PTH in response to hypocalcemia. PTH
brings serum calcium levels back to normal by promoting the
release of calcium from bone, enhancing intestinal absorption of
calcium by increasing v