Praxis Medical Insights

Key Distinguishing Features

Normal fatigue is proportional to recent activity levels and improves predictably with rest, as noted by the American College of Cardiology 1
Heart-related fatigue rarely occurs in isolation and typically clusters with dyspnea, chest pain, edema, syncope, and palpitations, according to the American Heart Association 1
Depression co-occurs in 25-33% of patients with cardiac fatigue and is the strongest predictor of fatigue intensity in stable coronary heart disease, as reported by the American College of Cardiology 1

Use a numeric rating scale (0-10) where scores of 4-10 indicate moderate to severe fatigue requiring focused evaluation, as recommended by the American College of Cardiology 1
Scores ≥7 typically correlate with marked decrease in physical functioning, according to the American Heart Association 2
Onset and pattern of fatigue should be evaluated to determine whether it began with cardiac diagnosis or treatment, and whether it worsens with specific activities, as suggested by the American College of Cardiology 2

Many cardiovascular drugs (beta-blockers, diuretics) can contribute to or worsen fatigue, as noted by the American College of Cardiology 1
Review all cardiac medications for sedation and fatigue as side effects, as recommended by the American Heart Association 1
Anxiety frequently accompanies cardiac fatigue and needs independent assessment, according to the American College of Cardiology 1

Family members may be more cognizant of functional changes than the patient, as reported by the Journal of the National Comprehensive Cancer Network 3