METHODS
Using MEDLINE/PubMed, Scopus and the Cochrane Library, we performed
searches of case reports and clinical studies published until 30 October
2020. Eligible studies were identified using various combinations of
Medical Subject Headings and keywords in the abstract or title: Impella,
aortic regurgitation, mitral regurgitation, aortic valve injury, mitral
valve injury, and mechanical circulatory support. Ethics Committee
approval was not required as this is a review manuscript.