Incidence of acute myocardial infarction in the evolution of dialysis patients

Carmen Sánchez-Perales1, Eduardo Vázquez-Ruiz de Castroviejo, Pilar Segura-Torres

  • 1Servicio de Nefrología, Complejo Hospitalario de Jaén. mcsanchezp@senefro.org

Insights

Acute myocardial infarction (AMI) is common in dialysis patients, especially those with prior coronary artery disease (CAD). Post-infarction mortality is high, underscoring the need for improved cardiovascular care in this population.

Area of Science:

  • Nephrology
  • Cardiology
  • Clinical Medicine

Background:

  • Coronary artery disease (CAD) is highly prevalent in patients undergoing dialysis.
  • Significant variability exists in reported rates of acute myocardial infarction (AMI) among dialysis patients.
  • Understanding AMI incidence and outcomes in this population is crucial for clinical management.

Purpose of the Study:

  • To determine the incidence of AMI in patients initiating dialysis.
  • To analyze the characteristics and clinical outcomes of AMI in incident dialysis patients.
  • To identify risk factors for AMI in patients on dialysis.

Main Methods:

  • Prospective recording of AMI events in dialysis patients from 1999-2007.
  • Assessment of patient demographics, comorbidities (diabetes, hypertension, prior CAD, PAD, atrial fibrillation, tobacco use), and biochemical markers.
  • Long-term follow-up until transplant, death, loss to follow-up, or study end (December 2010).

Main Results:

  • AMI incidence was 2.13 per 100 patient-years, significantly higher (7.53/100 patient-years) in patients with prior CAD.
  • AMI occurred within the first year of dialysis in 37.5% of cases.
  • Predictors of AMI included older age, prior CAD, and diabetes as the cause of nephropathy.
  • In-hospital mortality was 30%, with 80% of investigated patients showing multi-vessel disease.

Conclusions:

  • The incidence of AMI is notably high in patients starting dialysis.
  • Patients with pre-existing coronary artery disease face a threefold increased risk of AMI.
  • High post-infarction mortality and frequent multi-vessel disease characterize AMI in this cohort.
Abstract

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