title: Carotid intima-media thickness as a screening tool in cardiovascular primary prevention.
abstract: OBJECTIVE
  Increased carotid intima-media thickness (CIMT) is associated with cardiovascular events. The purpose of this study was to identify advanced subclinical atherosclerosis in patients who are at low or intermediate risk.
  
  
  METHODS
  Thousand hundred and eighteen Spanish subjects were prospectively enrolled in an ambulatory screening of cardiovascular risk (CVR). Three hundred and twenty patients aged over 30 years with low-intermediate CVR according to European SCORE function underwent carotid ultrasonography. Carotid IMT and plaque assessment were performed using high-resolution B-mode ultrasonography. Participants with abnormal CIMT were reclassified to high CVR.
  
  
  RESULTS
  According to SCORE function, 104 patients (32·5%) were of low CVR and 216 (67·5%) of intermediate CVR. Mean carotid IMT was 0·62 ± 0·13 mm, and carotid plaque was found in 35 (10·9%) patients. Carotid ultrasonography changed the risk stratum in 59 (18·4%) patients, who were reclassified to high CVR. Reclassification was more frequent in the intermediate CVR group than in the low CVR group (22·7% vs. 9·6%, P = 0·005) and was associated to age (P = 0·002), history of arterial hypertension (P < 0·001) and increased systolic blood pressure (P = 0·05).
  
  
  CONCLUSIONS
  CIMT calculated by high-resolution B-mode ultrasonography could become an important tool in preventive medicine. Measuring CIMT may be useful in identifying asymptomatic individuals with subclinical atherosclerosis not detected by the actual CVR functions.
authors.affiliation: Family Practice, Centro de Salud Espronceda, Área 7 de Madrid, Spain. antonioaguilarshea@gmail.com
authors.forename: Antonio L
authors.initials: AL
authors.lastname: Aguilar-Shea
authors.forename: Cristina
authors.initials: C
authors.lastname: Gallardo-Mayo
authors.forename: Sofía
authors.initials: S
authors.lastname: Garrido-Elustondo
authors.forename: Elpidio
authors.initials: E
authors.lastname: Calvo-Manuel
authors.forename: Jose L
authors.initials: JL
authors.lastname: Zamorano-Gómez
mesh_terms: D000328:Adult; D000368:Aged; D050197:Atherosclerosis / Q000000981:diagnostic imaging*; D002318:Cardiovascular Diseases / Q000517:prevention & control; D002339:Carotid Arteries / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000379:methods; D008875:Middle Aged; D011322:Primary Prevention / Q000379:methods; D011446:Prospective Studies; D018570:Risk Assessment; D013030:Spain; D017539:Tunica Intima / Q000000981:diagnostic imaging*; D017540:Tunica Media / Q000000981:diagnostic imaging*; D014463:Ultrasonography