[Atrioventricular block in unstable angina. Results of the ARIAM registry]

M Ruiz-Bailén1, M D Pola Gallego, M Expósito Ruiz

  • 1Unidad de Medicina Intensiva, Servicio de Cuidados Críticos y Urgencias, Hospital Universitario Médico Quirúrgico, Complejo Hospitalario de Jaén, Jaén, España. mrb1604@terra.es

Medicina Intensiva
|December 30, 2006
PubMed

Insights

High degree atrioventricular block (HDAVB) occurred in 1% of unstable angina (UA) patients. While not increasing mortality, HDAVB independently prolonged ICU stays, identifying these patients as high-risk.

Area of Science:

  • Cardiology
  • Critical Care Medicine
  • Clinical Research

Background:

  • Unstable angina (UA) is a critical condition requiring careful management.
  • High degree atrioventricular block (HDAVB) is a potential complication in cardiac patients.
  • Understanding the implications of HDAVB in UA is crucial for patient outcomes.

Purpose of the Study:

  • To determine the frequency of HDAVB in unstable angina (UA) patients.
  • To identify factors associated with HDAVB development in UA.
  • To evaluate the independent impact of HDAVB on mortality and ICU length of stay.

Main Methods:

  • Retrospective analysis of 14,096 UA patients from the Spanish ARIAM registry (1996-2003).
  • Inclusion of data from 129 Spanish ICUs.
  • Analysis of variables related to HDAVB development, mortality, and ICU stay.

Main Results:

  • HDAVB was present in 1% of UA patients.
  • HDAVB was independently linked to Killip classification and ventricular arrhythmias.
  • Crude mortality was higher with HDAVB, but this association was not independent.
  • HDAVB independently predicted longer ICU stays (aOR 1.89).

Conclusions:

  • Unstable angina patients with HDAVB constitute a high-risk group.
  • HDAVB is associated with prolonged ICU admission in UA patients.
  • Further research may explore specific interventions for this subgroup.
Abstract

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