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Alkalosis is the result of a process reducing hydrogen ion concentration of arterial blood plasma (alkalemia). In contrast to acidemia (serum pH 7.35 or lower), alkalemia occurs when the serum pH is higher than normal (7.45 or higher).
Diagnosis of contraction alkalosis is made by correlating laboratory data with clinical history and examination. Metabolic alkalosis in the presence of decreased effective circulatory volume, loop diuretic use, or other causes of intravascular depletion such as profound diarrhea should raise suspicion for contraction alkalosis as a likely etiology in the absence of other causes.
Respiratory alkalosis is a medical condition in which increased respiration elevates the blood pH beyond the normal range (7.35–7.45) with a concurrent reduction in arterial levels of carbon dioxide. [1] [4] This condition is one of the four primary disturbances of acid–base homeostasis. [5]
Hypovolemia then leads to metabolic alkalosis (increase in blood pH) by stimulating bicarbonate reabsorption in order to maintain extracellular volume. [5] [10] In summary, the symptoms of alkalosis is the net result of over-consumption of absorbable alkali, hypercalcemia-induced hypovolemia, and impaired glomerular filtration rate. [5]
Hyperventilation is irregular breathing that occurs when the rate or tidal volume of breathing eliminates more carbon dioxide than the body can produce. [1] [2] [3] This leads to hypocapnia, a reduced concentration of carbon dioxide dissolved in the blood.
Hypocalcemia is a medical condition characterized by low calcium levels in the blood serum. [5] The normal range of blood calcium is typically between 2.1–2.6 mmol/L (8.8–10.7 mg/dL, 4.3–5.2 mEq/L), while levels less than 2.1 mmol/L are defined as hypocalcemic. [1] [3] [6] Mildly low levels that develop slowly often have no symptoms.
Hypocalcemia (low blood calcium) and hypercalcemia (high blood calcium) are both serious medical disorders. Osteoporosis, osteomalacia and rickets are bone disorders linked to calcium metabolism disorders and effects of vitamin D. Renal osteodystrophy is a consequence of chronic kidney failure related to the calcium metabolism.
Ischaemic hypoxia is caused by reduced blood flow to the brain arising from cerebral vasoconstriction brought on by low carbon dioxide following hyperventilation, or increased pressure on the heart as a consequence of glossopharangeal insufflation (lung packing) which can reduce blood circulation in general, or both. If the brain used more ...