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[19] [39] Almost half of patients with type 1 diabetes have a prolonged QTc interval (> 440 ms). [19] Diabetes with a prolonged QTc interval was associated with a 29% mortality over 10 years in comparison to 19% with a normal QTc interval. [19] Anti-hypertensive drugs increased the QTc interval, but were not an independent predictor of ...
Intracellular fluid (2/3 of body water) is fluid contained within cells. In a 72 kg (159 lb) body containing 40 litres of fluid, about 25 litres is intracellular, [9] which amounts to 62.5%. Jackson's texts states 70% of body fluid is intracellular. [10] Extracellular fluid (1/3 of body
A lean 70 kg (150 lb) man, for example, has about 42 (42–47) liters of water in his body. The total body of water is divided into fluid compartments, [1] between the intracellular fluid compartment (also called space, or volume) and the extracellular fluid (ECF) compartment (space, volume) in a two-to-one ratio: 28 (28–32) liters are inside ...
So we have a QT of 400 milliseconds divided by the square root of 0.66 seconds over 1 second, which is 400 milliseconds divided by 0.81, which is unitless, and we get a corrected QT interval of 493 milliseconds, which is greater than 440, so actually, a 400 milliseconds QT interval at 90 beats per minute is considered long.
The value for a normal QT interval is similar in males and females from birth up to adolescence. During infancy, a normal QTc is defined as 400 ± 20 milliseconds. Before puberty, the 99th percentile of QTc values is 460 milliseconds. After puberty, this value increases to 470 milliseconds in males and 480 milliseconds in females. [citation needed]
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Water intoxication (the consumption of too much water too quickly) causes hyponatremia, which can cause death in minutes or hours. [8] Water makes up about 60% of the body weight in men and 55% of weight in women. [9] A baby is about 70% to 80%; old people are about 45% water. [10]
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