| Increased oxygen demand | | Noncardiac | | Hyperthermia | | Hyperthyroidism | | Sympathomimetic toxicity (eg, cocaine use) | | Hypertension | | Anxiety | | Arteriovenous fistulae | | Cardiac | | Hypertrophic cardiomyopathy | | Aortic stenosis | | Dilated cardiomyopathy | | Tachycardia | | Ventricular | | Supraventricular | | | Decreased oxygen supply | | Noncardiac | | Anemia | | Hypoxemia | | Pneumonia | | Asthma | | Chronic obstructive pulmonary disease | | Pulmonary hypertension | | Interstitial pulmonary fibrosis | | Obstructive sleep apnea | | Sickle cell disease | | Sympathomimetic toxicity (eg, cocaine use) | | Hyperviscosity | | Polycythemia | | Leukemia | | Thrombocytosis | | Hypergammaglobulinemia | | Cardiac | | Aortic stenosis | | Hypertrophic cardiomyopathy | |
