There are multiple definitions:

1. accountable care organization(English)

   • ACA, CHC, CMS, HIT, HMO, MSA, PCP, RVU
   • Health care, Organizations (documentation)
   • https://doi.org…56/NEJMp2209203

2. Asthma-COPD Overlap(English)

   • an umbrella term that encompasses patients with features of both asthma and COPD. To date, the global prevalence in the general population remains unknown
   • BMI, COPD, e-COPD, EBB, ES, IgE, IPAQ, LP, NLFS, NSA, MET, NANC, OLD, PA, RBM, SA
   • Asthma, Respiratory system, Exercise & Training
   • https://doi.org…2931-019-1198-4
   • https://doi.org…55.2021.1909549
   • https://doi.org…03.2021.1888977

3. anterior capsule opacification(English)

   • PCO
   • Ophthalmology
   • https://doi.org…ajo.2004.12.050

4. acute coronary occlusion(English)

   • occurs in ∼30% of patients with non-ST-segment elevation-acute coronary syndrome (NSTE-ACS). The presence of a region of reduced myocardial work index in these patients identifies those with ACO and appears superior to other parameters
   • ACS, CAD, CTO, ECG, GLS, LVEF, MWI, NSTE-ACS, NSTEMI, PCI, STE, TLS
   • Coronary circulation, Pathology, Medical imaging, Cardiology, Biophysics, Quality and outcomes
   • https://doi.org…93/ehjci/jev078
   • https://doi.org…cin.2026.07.032