VWF and angina pectoris: In another study, the plasma levels of vWF in 41 patient of mean age 68 ± 23 years, hospitalized within 72 h after the onset of MI, were significantly higher (2151 ± 97 mU/mL) than in 33 patients with stable angina and 90% narrowing of a major coronary artery (1445 ± 93 mU/mL), who had angina attack within 4 weeks before the study, or 30 patients with chest pain syndrome without hemodynamically significant stenosis or coronary spasm (1425 ± 76 mU/mL), in whom the vWF levels did not differ significantly [70].