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Medical Abbreviations Starting With "J"
This page lists 18 medical abbreviations starting with "J", each with its full form and a plain-English meaning. Where one abbreviation has more than one common meaning, each meaning has its own row — context in the chart is what tells them apart. Terms flagged ⚠ Error-prone are on recognised error-prone lists and should be written out in full. Use the filter box to narrow this list, the search on the main guide to search all 5,715 entries, or jump to another letter:
A B C D E F G H I K L M N 0–9 O P Q R S T U V W X Y Z
| Abbreviation | Full form | What it means | Used in |
|---|---|---|---|
| J-tip | J-tip needle-free injector | Pressured numbing before IV starts | Pediatrics Nursing Emergency & Critical Care |
| J-tube feed | jejunostomy tube feeding | Feeding through a small-bowel tube | Nursing Gastroenterology |
| jackknife | jackknife position (prone bent) | Prone bent position for rectal surgery | Nursing Surgery |
| jaw claudication | jaw claudication (symptom) | Jaw pain when chewing from artery inflammation | Neurology General Medical |
| JCV | JC virus (antibody/PML) | Virus linked to PML brain infection | Neurology Laboratory Infectious Disease |
| JCV index | JC virus antibody index | PML risk measure on natalizumab | Neurology Laboratory Prescription & Medication Orders |
| jejunal atresia | jejunal atresia (diagnosis) | Blocked small bowel segment at birth | Pediatrics Gastroenterology Surgery |
| jersey finger | jersey finger (tendon avulsion) | Ring-finger tendon torn gripping a jersey | Musculoskeletal Surgery |
| jet neb | jet nebulizer (device) | Compressed-gas aerosol device | Respiratory Nursing |
| JIA | juvenile idiopathic arthritis | Arthritis beginning in childhood without a known cause | Musculoskeletal Pediatrics |
| JME | juvenile myoclonic epilepsy | Teenage morning jerk epilepsy syndrome | Neurology Pediatrics |
| Jones criteria rheum | Jones criteria (rheumatic fever) | Diagnostic criteria for rheumatic fever | Pediatrics Cardiology |
| Jones fx | Jones fracture (fifth metatarsal) | Stress-prone foot bone fracture | Musculoskeletal |
| JP drain | Jackson-Pratt drain | Bulb drain removing fluid after surgery | Surgery Nursing |
| JT | jejunostomy tube | Feeding tube going into the small intestine | Gastroenterology Nursing |
| judgment MSE | judgment (mental status element) | Decision-making ability assessment | Psychiatry |
| JVD | jugular venous distension | Bulging neck veins from raised pressure in the right heart | Cardiology |
| JVP | jugular venous pressure | Neck vein pressure reflecting pressure in the right heart | Cardiology |
Educational reference only. This guide is for learning and quick reference. Abbreviations vary between hospitals, countries and specialties, and some are discouraged because they can be misread. Always write and interpret orders using your own institution’s approved abbreviation list, and check anything unclear with the prescriber or your local policy.