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Hypophosphatemia is an electrolyte disorder in which there is a low level of phosphate in the blood. [1] Symptoms may include weakness, trouble breathing, and loss of appetite. [ 1 ] Complications may include seizures , coma , rhabdomyolysis , or softening of the bones .
Blood tests reveal low levels of phosphate (hypophosphatemia) and inappropriately normal levels of vitamin D. [citation needed] Occasionally, hypophosphatemia may improve over time as urine losses of phosphate partially correct. [citation needed] ADHR may be lumped in with X-linked hypophosphatemia under general terms such as hypophosphatemic ...
X-linked hypophosphatemia (XLH) is an X-linked dominant form of rickets (or osteomalacia) that differs from most cases of dietary deficiency rickets in that vitamin D supplementation does not cure it. It can cause bone deformity including short stature and genu varum (bow-leggedness).
Hypophosphatasia (/ ˌ h aɪ p oʊ ˈ f ɒ s f eɪ t ˌ eɪ ʒ ə /; also called deficiency of alkaline phosphatase, phosphoethanolaminuria, [5] or Rathbun's syndrome; [1] sometimes abbreviated HPP [6]) is a rare, and sometimes fatal, inherited [7] metabolic bone disease. [8]
Hypophosphatemia, a key feature of refeeding syndrome, may lead to muscle weakness, heart failure, and impaired diaphragmatic function, while hypokalemia and hypomagnesemia can result in cardiac arrhythmias, seizures, and other severe complications. [6]
Oncogenic osteomalacia, also known as tumor-induced osteomalacia or oncogenic hypophosphatemic osteomalacia, is an uncommon disorder resulting in increased renal phosphate excretion, hypophosphatemia and osteomalacia. It may be caused by a phosphaturic mesenchymal tumor.
[9] [10] [11] Kidneys work to keep the electrolyte concentrations in blood constant despite changes in the body. [6] [8] For example, during heavy exercise, electrolytes are lost in sweat, particularly in the form of sodium and potassium. [8] The kidneys can also generate dilute urine to balance sodium levels. [8]
If the underlying cause of the hypocalcemia can be addressed, the hyperparathyroidism will resolve. In people with chronic kidney failure, treatment consists of dietary restriction of phosphorus; supplements containing an active form of vitamin D, such as calcitriol, doxercalciferol, paricalcitol; and phosphate binders, which are either calcium-based and non-calcium based.