Atherosclerosis is a medical condition that occurs when fat, cholesterol and other substances build up in the artery walls, forming plaques or atheromas. The spelling of "atheromas" can be broken down phonetically as /æθəˈrəʊməz/. It begins with the short a sound /æ/, followed by the voiceless dental fricative /θ/ and an unstressed schwa sound /ə/. This is followed by the rolled r-sound /r/ and the long o sound /əʊ/. The final syllable consists of the bilabial nasal consonant /m/ and the plural marker /z/.
Atheromas are characteristic pathological formations or lesions that develop within the walls of arteries. More specifically, an atheroma refers to the buildup of fatty deposits, cholesterol, cellular waste, calcium, and other substances that accumulate in the inner lining (intima) of arteries. This accumulation results in the formation of a raised, irregular, and often hardened plaque.
These atheromatous plaques can be found in various arteries throughout the body, but are most commonly observed in larger arteries like the aorta and those supplying the heart, brain, and lower extremities. The formation of atheromas is a progressive process known as atherosclerosis, which typically starts with endothelial damage and inflammation. Over time, this can lead to thickening and narrowing of the arterial wall, compromising blood flow.
Atheromas can significantly impact cardiovascular health by impeding blood circulation, increasing the risk of blood clot formation, and reducing arterial elasticity. If an atheromatous plaque ruptures, it can trigger the formation of a blood clot, which can obstruct blood flow and potentially cause a heart attack or stroke.
Factors contributing to the formation of atheromas include high blood pressure, high levels of cholesterol and triglycerides in the blood, smoking, diabetes, obesity, and a sedentary lifestyle. Prevention and management of atheromas involve lifestyle changes, such as adopting a healthy diet, engaging in regular physical activity, not smoking, and controlling underlying medical conditions. Medical interventions such as medication, angioplasty, or even surgical procedures may be required in severe cases.
The word "atheromas" is derived from the Greek words "athēra" meaning "gruel" or "porridge" and "ōma" meaning "swelling" or "tumor". In medical terminology, it refers to the fatty deposits or plaques that accumulate on the inner walls of arteries, leading to a condition called atherosclerosis. The term was coined in the mid-19th century by the French physician Jean Cruveilhier to describe the pathological condition of arterial plaque formation.