Endarterectomy, Carotid
Carotid Stenosis
Echo-Doppler measurements of portal vein and hepatic artery in asymptomatic patients with hepatitis B virus and healthy adults. (1/430)
BACKGROUND AND AIM: The aim of this prospective study was to determine the range of various hemodynamic parameters of portal vein and hepatic artery with echo-Doppler imaging in asymptomatic carriers of hepatitis B virus (HBV) and healthy adults. METHODS: One hundred and twenty two healthy adults and fifty-three asymptomatic patients with chronic HBV formed two groups. All participants underwent color Doppler imaging of the portal vein and hepatic artery. A single operator performed all echo-Doppler measurements. The examination protocol included measurements of portal vein and hepatic artery diameter (d), blood flow (BF), time averaged velocity (TAV) and calculation of Doppler Perfusion Index (DPI) of liver. RESULTS: Asymptomatic HBV carriers showed a statistically significant decrease in portal vein TAV (12.8 +/- 6.1 vs 17.5 +/- 8.8), an increase in portal vein BF (411.38 +/- 211.31 vs 327.55 +/- 188.77) and decrease in DPI (0.18 +/- 0.14 vs 0.28 +/- 0.15). CONCLUSIONS: Echo-Doppler measurements of portal vein and hepatic artery can detect significant hemodynamic changes in asymptomatic HBV carriers. (+info)Spontaneous asymptomatic coronary artery dissection in a young man. (2/430)
(+info)Common HBV genotype in southeastern Iranian patients. (3/430)
Asymptomatic hepatitis B infection is characterized as a type of hepatitis in which hepatitis B surface antigen is present in the patient's peripheral blood despite the absence of clinical symptoms. Previous studies have shown that a particular genotype may effect clinical manifestations of hepatitis B infection; hence, the aim of the current study was to determine the frequency of hepatitis B virus genotypes among asymptomatic carriers of hepatitis B.In this experimental study, the plasma samples of 100 asymptomatic carriers were collected and tested for HBsAg and anti-HBs using ELISA. The genotype of hepatitis B virus was determined by the GAP-PCR technique. The results of this study showed that all samples were positive for hepatitis B surface antigen and anti-hepatitis B core antigen was present in 60 (60%) cases. Our results also indicated that all patients had the D genotype of hepatitis B virus. (+info)Cardiovascular risk scores in the prediction of subclinical atherosclerosis in young adults: evidence from the cardiovascular risk in a young Finns study. (4/430)
(+info)Clinical aspects of short-chain acyl-CoA dehydrogenase deficiency. (5/430)
(+info)The peripheral arterial disease study (PERART/ARTPER): prevalence and risk factors in the general population. (6/430)
(+info)Should asymptomatic bronchogenic cysts in adults be treated conservatively or with surgery? (7/430)
(+info)Cardiac risk stratification: role of the coronary calcium score. (8/430)
Coronary artery calcium (CAC) is an integral part of atherosclerotic coronary heart disease (CHD). CHD is the leading cause of death in industrialized nations and there is a constant effort to develop preventative strategies. The emphasis is on risk stratification and primary risk prevention in asymptomatic patients to decrease cardiovascular mortality and morbidity. The Framingham Risk Score predicts CHD events only moderately well where family history is not included as a risk factor. There has been an exploration for new tests for better risk stratification and risk factor modification. While the Framingham Risk Score, European Systematic Coronary Risk Evaluation Project, and European Prospective Cardiovascular Munster study remain excellent tools for risk factor modification, the CAC score may have additional benefit in risk assessment. There have been several studies supporting the role of CAC score for prediction of myocardial infarction and cardiovascular mortality. It has been shown to have great scope in risk stratification of asymptomatic patients in the emergency room. Additionally, it may help in assessment of progression or regression of coronary artery disease. Furthermore, the CAC score may help differentiate ischemic from nonischemic cardiomyopathy. (+info)Carotid endarterectomy is a surgical procedure to remove plaque buildup (atherosclerosis) from the carotid arteries, which are the major blood vessels that supply oxygen-rich blood to the brain. The surgery involves making an incision in the neck, opening the carotid artery, and removing the plaque from the inside of the artery wall. The goal of the procedure is to restore normal blood flow to the brain and reduce the risk of stroke caused by the narrowing or blockage of the carotid arteries.
Carotid stenosis is a medical condition that refers to the narrowing or constriction of the lumen (inner space) of the carotid artery. The carotid arteries are major blood vessels that supply oxygenated blood to the head and neck. Carotid stenosis usually results from the buildup of plaque, made up of fat, cholesterol, calcium, and other substances, on the inner walls of the artery. This process is called atherosclerosis.
As the plaque accumulates, it causes the artery to narrow, reducing blood flow to the brain. Severe carotid stenosis can increase the risk of stroke, as a clot or debris from the plaque can break off and travel to the brain, blocking a smaller blood vessel and causing tissue damage or death.
Carotid stenosis is typically diagnosed through imaging tests such as ultrasound, CT angiography, or MRI angiography. Treatment options may include lifestyle modifications (such as quitting smoking, controlling blood pressure, and managing cholesterol levels), medications to reduce the risk of clots, or surgical procedures like endarterectomy or stenting to remove or bypass the blockage.
The term "asymptomatic disease" refers to a medical condition or infection that does not cause any obvious symptoms in an affected individual. Some people with asymptomatic diseases may never develop any signs or symptoms throughout their lives, while others may eventually go on to develop symptoms at a later stage. In some cases, asymptomatic diseases may still be detected through medical testing or screening, even if the person feels completely well. A classic example of an asymptomatic disease is a person who has a positive blood test for a latent viral infection, such as HIV or HSV (herpes simplex virus), but does not have any symptoms related to the infection at that time.