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Hypercholesterolemia, also called high cholesterol, is the presence of high levels of cholesterol in the blood. [1] It is a form of hyperlipidemia (high levels of lipids in the blood), hyperlipoproteinemia (high levels of lipoproteins in the blood), and dyslipidemia (any abnormalities of lipid and lipoprotein levels in the blood).
Hyperoxia is the state of being exposed to high levels of oxygen; it may refer to organisms, cells and tissues that are experiencing excessive oxygenation, [1] or to an abnormally high oxygen concentration in an environment (e.g. a body of water).
Triglyceride level is an independent risk factor for cardiovascular disease and/or metabolic syndrome. [37] Food intake prior to testing may cause elevated levels, up to 20%. Normal level is defined as less than 150 mg/dL. [46] Borderline high is defined as 150 to 199 mg/dL. [46] High level is between 200 and 499 mg/dL. [46]
Another blood level collected to assess dyslipidemia is HDL-C. [6] HDL cholesterol is made up of very little lipids and a high amount of protein. [1] It is beneficial in the body because it functions by going to the tissues and picking up extra cholesterol and fat. [1]
Hypertension, another word for high blood pressure, is a major contributing factor to heart disease and stroke, which are leading causes of death worldwide. In the US, 1 in 5 adults with ...
Sustained higher levels of blood sugar cause damage to the blood vessels and to the organs they supply, leading to the complications of diabetes. [47] Chronic hyperglycemia can be measured via the HbA1c test. The definition of acute hyperglycemia varies by study, with mmol/L levels from 8 to 15 (mg/dL levels from 144 to 270). [48]
Hypernatremia is generally defined as a serum sodium level of more than 145 mmol/L. [3] Severe symptoms typically only occur when levels are above 160 mmol/L. [1] Hypernatremia is typically classified by a person's fluid status into low volume , normal volume, and high volume . [ 1 ]
Hypercapnia is a hazard of underwater diving associated with breath-hold diving, scuba diving, particularly on rebreathers, and deep diving where it is associated with increased breathing gas density due to the high ambient pressure.