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Exercise amenorrhoea is a diagnosis of exclusion. Girls who exercise at a young age may have primary amenorrhoea. The differential diagnosis are androgen excess, pituitary tumors (rare), tumors of the third ventricle (rare) or other conditions leading to chronic malnutrition. Diet history and bone density investigations should also be done to ...
There is a tradeoff during decompression between mild exercise enhancing inert gas elimination and strenuous exercise triggering bubble formation and growth. [39] Variations in perfusion distribution do not necessarily affect respiratory inert gas exchange, though some gas may be locally constrained by changes in perfusion.
During pregnancy the plasma volume increases by 40-50% and the red blood cell volume increases only by 20–30%. [22] These changes occur mostly in the second trimester and prior to 32 weeks gestation. [24] Due to dilution, the net result is a decrease in hematocrit or hemoglobin, which are measures of red blood cell concentration.
Had Avery Davis Bell had a miscarriage in Boston, where she lived until 2020, doctors could snap into action. But because she was having a miscarriage in a hospital in Georgia, surgery had to wait.
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Impaired arterial blood gas (oxygen) tensions during intense exercise, increased blood lactate, and rarely death have been noted (likely due to ruptured chordae tendinae or a different mechanism of lung hemorrhage). Epistaxis is diagnosed when blood is visible at either or both nostrils during or following exercise.
The process of breathing does not fill the alveoli with atmospheric air during each inhalation (about 350 ml per breath), but the inhaled air is carefully diluted and thoroughly mixed with a large volume of gas (about 2.5 liters in adult humans) known as the functional residual capacity which remains in the lungs after each exhalation, and ...