title: [Ankle-brachial index assessed in a Mexican population with vascular risk. The INDAGA study].
abstract: OBJECTIVE
  to know the peripheral arterial disease (PAD) prevalence and its determinants in a nationwide survey in Mexican population.
  
  
  METHODS
  baseline ankle brachial index (ABI) measured by Doppler was performed in patients at high vascular risk for PAD. ABI between 1 and 1.3 was regarded as normal. ABI ≤ 0.9 (a low ABI) was considered to be an indicator of PAD. ABI > 1.3 (a high ABI) was also considered abnormal, as an indirect index of artery calcification and stiffness.
  
  
  RESULTS
  a total of 5 101 patients were evaluated: 1,212 patients (23.8 %) had ABI ≤ 0.9, and 431 (8.4 %) > 1.3 (including 1 % with incompressible vessels). ABI ≤ 0.9 was associated with age, arterial hypertension, diabetes, current smoking, dyslipidemia and previous vascular events. On the other hand, ABI > 1.3 was associated with male gender, diabetes, previous smoking habit and history of vascular events. A high proportion of patients (62.5 %) with established PAD, identified by a low ABI (≤ 0.9) were asymptomatic or with minimum symptoms at the time of their assessment.
  
  
  CONCLUSIONS
  a significant prevalence of abnormal ABI was identified. ABI measurement by Doppler can help to identify patients who need intense secondary prevention and more aggressive treatment of vascular risk factors.
authors.affiliation: Departamento de Neurología y Psiquiatría. Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Distrito Federal, México. carloscantu_brito@hotmail.com
authors.forename: Carlos
authors.initials: C
authors.lastname: Cantú-Brito
authors.forename: Erwin
authors.initials: E
authors.lastname: Chiquete
authors.forename: Manuel
authors.initials: M
authors.lastname: Duarte-Vega
authors.forename: Alberto
authors.initials: A
authors.lastname: Rubio-Guerra
authors.forename: Martín
authors.initials: M
authors.lastname: Herrera-Cornejo
authors.forename: Jacobo
authors.initials: J
authors.lastname: Nettel-García
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D055109:Ankle Brachial Index; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico; D008875:Middle Aged; D058729:Peripheral Arterial Disease / Q000175:diagnosis* / Q000453:epidemiology*; D015995:Prevalence; D011446:Prospective Studies; D012307:Risk Factors; D014652:Vascular Diseases / Q000453:epidemiology