There are multiple definitions:

1. microvascular obstruction(English)

   • seen in some patients with AMI following reperfusion therapy of an occluded coronary artery, and characterized by damage / dysfunction of the myocardial microvasculature with a no-reflow phenomenon within the infarct zone. Also called no-reflow
   • ACS, AMI, CFR, PCI, MRI, AAR, CMR, GRACE, IMH, IPC, MVO, RIC, TIMI, TTC, AA, ETAR, NR, STEMI
   • Microcirculation, Coronary circulation
   • https://doi.org…acc.2009.12.037
   • https://doi.org…acc.2019.05.024
   • https://doi.org…sis.2023.06.970

2. mid-ventricular obstruction(English)

   • diagnosed when the peak midcavitary pressure gradient is estimated to be ≥ 30 mmHg
   • HCM
   • Cardiology, Pathology
   • https://doi.org…acc.2011.02.033

3. mitral valve opening(English)

   • AVC, AVO, GWI, MW, MVC
   • Cardiology, Anatomy
   • https://doi.org…3/ehjci/jeab043

4. maximum voluntary mouth opening(English)

   • GCPS, JDL, RDC, s-TMD, TMD
   • Dentistry, Pain
   • https://doi.org…0194-016-0642-9