Progress in Research of Asymptomatic Primary Mitral Regurgitation Examination Methods: A Review of Literature.

Mitral regurgitation (MR) is a common valvular heart disease, which can be classified into primary and secondary, according to the cause. Primary mitral regurgitation (PMR) is caused by rheumatic fever, degenerative changes, valve prolapse, etc. The appearance of clinical symptoms has always been the best indicator of surgical intervention in patients with severe PMR, but for asymptomatic patients, the best treatment has been controversial.

Negative Pressure Wound Therapy in Necrotizing Fasciitis of the Head and Neck.

Purpose: Necrotizing fasciitis is a severe soft tissue infection that is uncommon in the head and neck region. Despite the advancement of care over the past few decades, the mortality rate remains high. Negative pressure wound therapy (NPWT), an advanced wound-healing technique, has become increasingly popular for a wide variety of complicated wounds.