The term peripheral vascular signs refers to changes in the pulsation or waveform of the blood vessels found on examination of the peripheral vessels in certain disease conditions. Common clinical signs of peripheral vascularity include capillary pulsation, watery pulse, alternating pulse, heavy pulse, odd pulse, flooding pulse, fine pulse, gunshot sound, and Duroziez double sound. What are the tests for changes in vascular pulsations or waveforms? 1.History The history is very important for the diagnosis of the disease. Taking a detailed history helps us to understand the development of the disease, so as to make a rough estimate of the cause and guide us to further examination and confirm the diagnosis of the disease. Peripheral vascular signs are most commonly seen in patients with aortic valve insufficiency, who tend to have rheumatic heart disease, a previous history of rheumatic fever, a young age of onset, and often a combination of mitral valve lesions. Congenital aortic valve insufficiency is less common clinically, with patients developing it in infancy. Syphilitic aortic valve insufficiency was once extinct in China, but in recent years there has been an increase in the number of such patients with a history of smuggling; when taking a medical history, one should be careful and meticulous to avoid misdiagnosis. Peripheral vascular signs in a few cases are also seen in arteriovenous ductus arteriosus, hyperthyroidism, anemia and hypertensive heart disease, pericarditis, myocardial disintegration disease, all these diseases have their corresponding medical history characteristics, when taking the medical history should be targeted, have a good idea, for the characteristics of the disease, in order to help the diagnosis of the disease. 2.Physical examination Physical examination should be performed after detailed history taking to further help us diagnose the disease. In patients with aortic insufficiency, a diastolic sigh-like murmur can be heard in the aortic valve area during physical examination, and a murmur can be heard in the corresponding parts when combined with mitral valve and tricuspid valve lesions. In addition to murmurs in the aortic valve area, patients with Marfan syndrome who have incomplete aortic valve closure can be found to be tall and slender, with longer fingers (toes) than normal, with “spider fingers (toes)”. In short, the physical examination should be carried out carefully and step by step so as not to miss some important signs and delay the disease, which is not conducive to the diagnosis of the disease.