A 2020 case report in Oxford Medical Case Reports identified 'the balloon impasse sign' during percutaneous transvenous mitral valvuloplasty.
Notes on verification
Directly confirmed by the original journal article (Oxford Medical Case Reports, DOI 10.1093/omcr/omaa062) and corroborated by PMC full-text version.
Sources
- Publications - Pietro Di Santo, M.D., Ph.D. - Mayo Clinic (mayoclinic.org)
- https://academic.oup.com/omcr/article/2020/8/omaa062/5890278 (academic.oup.com)
- https://pmc.ncbi.nlm.nih.gov/articles/PMC7416822/ (pmc.ncbi.nlm.nih.gov)