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Less blood flow may be genetic and, if enquiries are made, it may be found that woman’s mother and/or sister also have decreased blood flow during their periods. Pregnancy can normally occur with this type of decreased flow during the period. The incidence of infertility is the same as in women with a normal blood flow.
Levels of even less than 0.1% can cause intoxication, with unconsciousness often occurring at 0.3–0.4%. [17] Death from ethanol consumption is possible when blood alcohol levels reach 0.4%. A blood level of 0.5% or more is commonly fatal. The oral median lethal dose (LD 50) of ethanol in rats is 5,628 mg/kg. Directly translated to human ...
Blood-sugar levels naturally fluctuate throughout the day, the body normally maintaining levels between 70 and 110 mg/dL (3.9–6.1 mmol/L). [ 3 ] [ 2 ] Although 70 mg/dL (3.9 mmol/L) is the lower limit of normal glucose, symptoms of hypoglycemia usually do not occur until blood sugar has fallen to 55 mg/dL (3.0 mmol/L) or lower.
Dysmenorrhea, also known as period pain, painful periods or menstrual cramps, is pain during menstruation. [ 4 ] [ 5 ] [ 2 ] Its usual onset occurs around the time that menstruation begins. [ 1 ] Symptoms typically last less than three days. [ 1 ]
This can include low partial pressures of oxygen in the breathing gas, problems with diffusion of oxygen in the lungs through the interface between air and blood, insufficient available hemoglobin, problems with blood flow to the end user tissue, problems with the breathing cycle regarding rate and volume, and physiological and mechanical dead ...
Hyponatremia or hyponatraemia is a low concentration of sodium in the blood. [4] It is generally defined as a sodium concentration of less than 135 mmol/L (135 mEq/L), with severe hyponatremia being below 120 mEq/L. [3] [8] Symptoms can be absent, mild or severe.
Inadequate supply occurs, for example, with hypoperfusion as occurs in hemorrhagic shock. A rise in lactate out of proportion to the level of pyruvate, e.g., in mixed venous blood, is termed "excess lactate", and is an indicator of anaerobic glycolysis occurring in muscle cells, as seen during strenuous exercise. Once oxygenation is restored ...
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.