Effects of posture on metabolic and hemodynamic predischarge exercise response after acute myocardial infarction Academic Article uri icon

Overview

MeSH Major

  • Exercise Test
  • Hemodynamics
  • Myocardial Infarction
  • Posture

abstract

  • Predischarge exercise testing after acute myocardial infarction (AMI) is an important noninvasive modality for risk stratification. To study the impact of position on cardiopulmonary exercise response, 30 patients performed symptom-limited upright treadmill and supine bicycle ergometry exercise an average of 8 days after an AMI. The exercise sequence was randomly assigned with a minimum 4-hour interval between tests. Exercise time and peak oxygen consumption were significantly greater in the upright position (7.0 +/- 2.0 vs 5.6 +/- 2.0 minutes; p less than 0.001 and 14.9 vs 12.0 ml/min/kg; p less than 0.001, respectively). Compared to the supine position, exercise in the upright position was associated with a significant increased incidence of ischemic exercise-induced ST-segment depression (33 vs 20%; p less than 0.03), and chest pain (20 vs 10%; p less than 0.04). Thus, position is an important determinant of myocardial ischemic response and exercise tolerance in patients who perform symptom-limited exercise tests early after AMI.

publication date

  • July 15, 1990

Research

keywords

  • Academic Article

Identity

Language

  • eng

Digital Object Identifier (DOI)

  • 10.1016/0002-9149(90)90576-M

PubMed ID

  • 2115287

Additional Document Info

start page

  • 134

end page

  • 9

volume

  • 66

number

  • 2