There are multiple definitions:

1. unstable angina pectoris(English)

   • is prevalent among the elderly
   • ACS, AMI, hs-cTnT, CTA, NSTEMI, PCAT, SAP, SCAD, UA, LVEF, LVESD, PCI, QOL, RT, SAQ
   • Cardiology, Aging, Pathology
   • https://doi.org…acc.2021.01.046
   • https://doi.org…GING.122.014959
   • https://doi.org…03/nah.nah_2_25

2. uterine artery pseudoaneurysm(English)

   • uncommon cause of postpartum hemorrhage
   • Gynecology, Vascular disease
   • https://doi.org…80.2017.1400301

3. unlicensed assistive personnel(English)

   • NAP
   • Care giver/provider
   • https://doi.org…ogn.2015.11.005