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Uniformed Services University of the Health Sciences
Uniformed Services University of the Health Sciences (USU, USUHS), the nation's only federal health sciences university in Bethesda, Maryland; chartered 1972, tuition-free military medical school with service obligation.
Unilateral adrenalectomy
Unilateral adrenalectomy is the surgical removal of one adrenal gland, performed to cure hormone overproduction from that gland, chiefly primary aldosteronism, cortisol-producing adenoma, and pheochromocytoma.
Unilateral ocular duplication
Unilateral ocular duplication (triophthalmia, unilateral diplophthalmia) is a rare embryonic defect with a duplicated eye on one side, always with CNS and craniofacial anomalies, epilepsy, and intellectual disability.
Unilateral polymicrogyria
Unilateral polymicrogyria (unilateral PMG, ORPHA:268943) is a cerebral cortical malformation with excessive small folds and abnormal layering on one side of the brain; hemispheric or focal subtypes, perisylvian predominance, epilepsy, genetic or acquired causes.
UNIM-104
UNIM-104, a coded polyherbal Unani electuary (Maʿjūn) from India's CCRUM, dosed 5 g twice daily for 90 days; preliminary trials in non-alcoholic fatty liver (Tashahhum-e-Kabid) reported symptom relief, improved liver CT attenuation, and no adverse effects.
UNIM-401 (with topical UNIM-403)
UNIM-401 (oral) and UNIM-403 (topical neem-camphor oil) are coded Unani formulations for psoriasis; an AIIMS non-inferiority RCT found them non-inferior to PUVA sol with fewer side effects (2% vs 16.4%).
Unintended pregnancy
Unintended pregnancy, also called unplanned pregnancy, is a pregnancy that was unwanted or mistimed. About 121 million occur yearly worldwide; measured via NSFG and DHS surveys; prevented by contraception.
Union Hospital
Union Hospital refers to several unrelated hospitals: a private hospital in Tai Wai, Hong Kong; Fujian Medical University Union Hospital, a 2,500-bed public Grade III Class A teaching hospital in Fuzhou; and a Cleveland Clinic community hospital in Dover, Ohio.
Unipolar neuron
Unipolar neuron (pseudounipolar neuron): a neuron with one process from the soma, typical of PNS sensory neurons in dorsal root and cranial nerve ganglia; develops from bipolar embryonic neurons, with axons up to 1 m or more.
Uniportal video-assisted thoracic surgery
Uniportal video-assisted thoracic surgery (uniportal VATS) passes a camera and all instruments through one 2.5–5 cm incision, avoiding rib spreading; it was first described in 2004.
Uniportal video-assisted thoracoscopic surgery
Uniportal video-assisted thoracoscopic surgery, or uniportal VATS, is a minimally invasive chest surgery technique in which the camera and all instruments pass through a single small incision.
United Nations Population Fund
UNFPA (United Nations Population Fund), formerly the UN Fund for Population Activities, is the UN's sexual and reproductive health agency, founded 1967, renamed 1987, working in over 150 countries and funding contraceptives and maternal health in 54 low-income countries.
United States Army Physical Fitness Test
United States Army Physical Fitness Test: the APFT (1980, push-ups, sit-ups, 2-mile run) became the six-event ACFT in October 2022, then the five-event Army Fitness Test on June 1, 2025, plus the 2026 Combat Field Test.
United States Department of Health and Human Services
The United States Department of Health and Human Services (HHS) is the US cabinet department administering Medicare, Medicaid, the FDA, the CDC, and the NIH.
United States Medical Licensing Examination
USMLE, the United States Medical Licensing Examination, is the three-Step exam (Step 1, Step 2 CK, Step 3) owned by FSMB and NBME that physicians must pass for US medical licensure; first administered 1992, Step 1 pass/fail since January 26, 2022, four attempts per Step.
United States Pharmacopeia
The United States Pharmacopeia (USP), published with the National Formulary as USP–NF, sets legally recognized quality standards for medicines in the United States since 1820.
United States Public Health Service
United States Public Health Service (USPHS), from the 1798 Marine Hospital Service; federal health agency under HHS led by the Surgeon General, with a uniformed Commissioned Corps of over 6,000 officers and agencies including CDC, NIH, and FDA.
United States Public Health Service Commissioned Corps
The United States Public Health Service Commissioned Corps, or USPHS Commissioned Corps, is a uniformed service of more than 6,000 public health professionals led by the U.S. Surgeon General.
Univentricular heart
Univentricular heart, also called single ventricle or complex single ventricle, is a rare congenital malformation where both atria drain into one functional ventricle, managed by staged Fontan palliation or biventricular repair.
Universal health care
Universal health care (universal health coverage, UHC): all people access needed quality health services without financial hardship. SDG target 3.8; SCI rose 54 to 71 (2000–2023); 4.6 billion still lack essential services; distinct from single-payer or NHS-specific models.
Universal Numbering System
Universal Numbering System (Universal/National Tooth Numbering System): ADA and HIPAA standard dental notation numbering permanent teeth 1-32 from upper right third molar and primary teeth A-T, with supernumerary teeth 51-82; standard in the United States.
Universal precautions
Universal precautions are an infection control practice treating every patient's blood and certain body fluids as infectious for HIV and hepatitis B, formalized by the CDC in 1987.
Universidad de Ciencias Medicas
Universidad de Ciencias Médicas (UCIMED), private Costa Rican health sciences university in San José, founded 1976, chartered 1999; SINAES and COMAEM-accredited medicine, top 61.1% ECOM-CR pass rate, Galileo Global Education member.
Universitätskinderklinik
Universitätskinderklinik Magdeburg: the University Children's Hospital (Haus 10, Leipziger Str. 44) of Universitätsklinikum Magdeburg, Otto-von-Guericke University. 80 beds, Perinatal Center Level 1, pediatric oncology center of northern Saxony-Anhalt; director Prof. Antje Redlich since June 2026.
University Clinical Centre
The University Clinical Centre (Uniwersyteckie Centrum Kliniczne, UCK) is a multi-specialty teaching hospital in Gdańsk, Poland, founded in 1945, with about 208,000 patients a year, the largest in Pomerania.
University College Hospital
University College Hospital (UCH), London teaching hospital at 235 Euston Road run by UCLH NHS Foundation Trust; founded 1834 as North London Hospital, first English university teaching hospital, rebuilt 2005.
University College Hospital, Ibadan
University College Hospital, Ibadan (UCH) is Nigeria's first teaching hospital, established by the 1952 University College Hospital Act and commissioned 20 November 1957 with 500 beds; affiliated with the University of Ibadan, it now has about 1,445 bed spaces and trains much of Nigeria's medical workforce.
University Health Network
University Health Network (UHN), Toronto, is Canada's largest research hospital network, fully affiliated with the University of Toronto; formed by 1986-1999 mergers, it runs Toronto General, Toronto Western, Princess Margaret, Toronto Rehab, Michener, and West Park across 10 sites.
University Health System
University Health System (University Health), the Bexar County Hospital District, is a San Antonio, Texas public academic health system founded in 1917; its University Hospital is the ACS-verified Level I adult and pediatric trauma center for 22 South Texas counties and teaches for UT Health San Antonio.
University Hospital
University Hospital: a teaching hospital combining patient care, teaching, and research equally (Peart's 1970 definition), and the name of hospitals in London Ontario, Columbia Missouri, Newark, and San Diego, each tied to a university medical school.