Navigating the world of healthcare often feels like learning a new language, and medical abbreviations are a significant part of that specialized vocabulary. For students, healthcare professionals, and anyone interested in medicine, understanding these essential medical abbreviations is crucial for accurate communication and patient safety. This comprehensive guide breaks down common medical shorthand, helping you decipher prescriptions, patient notes, and medical records with confidence.
Why Understanding Medical Abbreviations is Essential for Students
Medical abbreviations are used daily across all healthcare settings to save time and space. From doctors' notes to medication instructions, these condensed terms are everywhere. As a student, mastering them early will enhance your learning, improve your ability to understand clinical documentation, and prepare you for your professional career.
Learning these terms isn't just about memorization; it's about understanding the context in which they are used. This essential medical abbreviations guide will help you build a strong foundation, making your study and future practice much smoother.
Common Medical Abbreviations Explained: A Comprehensive Guide
This section covers a wide range of abbreviations, categorized for easier learning and reference. Mastering these will significantly improve your comprehension of medical documents.
General Timing and Frequency Abbreviations
These abbreviations specify when and how often medications or procedures should occur.
- a.c. – before meal/food (Latin: ante cibum)
- p.c. – after meal/food (Latin: post cibum)
- c.c. – with meal/food (Latin: cum cibo)
- a.m. – in the morning (Latin: ante meridiem)
- p.m. – in the afternoon (Latin: post meridiem)
- b.d. /b.i.d. – twice a day (Latin: bis die/bis in die)
- t.d.s. /t.i.d. – three times a day (Latin: ter die sumendus/ter in die)
- q.d.s. /q.i.d. – four times a day (Latin: quater die sumendus/quater in die)
- o.d. – every day/daily (Latin: omni die)
- p.r.n. – as and when required (Latin: pro re nata)
- stat. – immediately (Latin: statim)
- nocte – at night (Latin: nocte)
- mane – in the morning/during the daytime (Latin)
- 1/7 – one day
- 1/12 – one month
- 1/52 – one week
Administration Routes and Patient Instructions
These terms indicate how medication is given or how a patient should act.
- p.o. – by mouth (Latin: per os)
- NPO – nothing by mouth (Latin: nihil per os)
- p.r. – by rectum (Latin: per rectum)
- p.v. – by vagina (Latin: per vaginam)
- i.m. /IM – intramascular
- i.v. /IV – intravenous
- s.c. – subcutaneous
- s.l. – sublingual
- infus n – infusion
- mitt – give/send (Latin)
- sig. – write/label (in prescriptions) (Latin: signa/signetur)
- Rx – take (in prescriptions); treatment (in case notes) (Latin)
Diagnostic and Examination Terms
Understanding these helps interpret patient assessments and test results.
- Dx – diagnosis
- H&P – history and physical examination
- O/E – on examination
- Ix – investigation
- EUA – examination under anaesthesia
- VE – vaginal examination
- USS – ultrasound scan
- XR – X-ray
- CT – computerized tomography; cerebral tumour; coronary thrombosis
- MRI – magnetic resonance imaging
- EEG – electroencephalogram
- ECG – electrocardiogram
- ESR – erythrocyte sedimentation rate
- FBC – full blood count
- BAL – blood alcohol level
- LMP – last menstrual period
- MSU – mid-stream urine
- PMH – past medical history
- FH – family history
- PH – past history
- SH – social history
- NYD – not yet diagnosed
- NAD – no abnormality detected/nothing abnormal detected
- WNL – within normal limits
Common Conditions and Diseases
These abbreviations are frequently seen in patient charts and medical reports.
- AIDS – acquired immunodeficiency syndrome
- AMI – acute myocardial infarction
- CA /Ca – cancer; carcinoma; calcium
- CHF – chronic heart failure
- Chr.CF – chronic cardiac failure
- COAD – chronic obstructive airways disease
- CT – cerebral tumour; coronary thrombosis
- DU – duodenal ulcer
- DVT – deep venous thrombosis
- GU – gastric ulcer; genitourinary
- HBV – hepatitis B virus
- HIV – human immunodeficiency virus
- HT – hypertension
- IBS – irritable bowel syndrome
- ID – infectious disease
- MI – mitral incompetence/insufficiency; myocardial infarction
- MS – multiple sclerosis; mitral stenosis
- MRSA – Methicillin-resistant Staphylococcus aureus
- NSU – non-specific urethritis
- OA – osteo-arthritis
- PU – peptic ulcer
- RA – rheumatoid arthritis
- RI – respiratory infection
- RTI – respiratory tract infection
- STD – sexually transmitted disease
- TB – tuberculosis
- URTI – upper respiratory tract infection
- VD – venereal disease
- VV – varicose vein(s)
Body Systems and Related Terms
Medical abbreviations often refer to specific parts or systems of the body.
- ABC – Airway, Breathing and Circulation
- CVS – cardiovascular system; cerebrovascular system
- CNS – central nervous system
- CSF – cerebrospinal fluid
- CXR – chest X-ray
- ENT – ear, nose and throat
- GI/GIS – gastro-intestinal/gastro-intestinal system
- GUS – genito-urinary system
- KUB – kidney, ureter and bladder
- LKS – liver, kidney and spleen
- NS – nervous system
- RS – respiratory system
- UGS – urogenital system
- L – left
- R – right
- LA – left atrium
- LV – left ventricle; lumbar vertebra
- LUQ – left upper quadrant
- LLL – left lower lobe
- LLQ – left lower quadrant
- RUA – right upper arm
- RUQ – right upper quadrant
- RLL – right lower lobe
- RLQ – right lower quadrant
- LVA – left upper arm
- RA – right atrium
- RV – right ventricle
- BS – breath sounds; bowel sounds
- HS – heart sounds
Measurements and Values
These abbreviations are vital for understanding laboratory results and vital signs.
- BP – blood pressure
- HR – heart rate
- T – temperature
- P – pulse
- R – respiration
- TPR – temperature, pulse, respiration
- g – gram
- g/L – grams per litre
- dl – decilitre
- L – litre
- L/L – litres per litre
- mg – milligram
- mcg – microgram
- ml – millilitre
- mmol/L – millimols per litre
- U – urea; unit
- U/L – units per litre
- BMI – body mass index
- BMR – basal metabolic rate
- Cal – Calorie or kilocalorie
- cal – calorie
- Hb/Hgb – haemoglobin
- Pl. – plasma
- K – potassium
- Na – sodium
- E – electrolytes
- RBC – red blood cell; red blood corpuscles
- WBC – white blood cell; white blood corpuscles
- WCC – white cell count
- IQ – intelligence quotient
- IU – international unit
Medical Personnel and Departments
Understanding who's who and where is also part of medical literacy.
- A&E – accident and emergency
- GP – general practitioner
- MD – Doctor of Medicine
- RN – registered nurse
- SN – student nurse
- SRN – State Registered Nurse
- EMS – emergency medical service
- ICU – intensive care unit
- CSSD – Central Sterile Supply Department
- NHS – National Health Service
- Obs. – obstetrics
- OT – operating theatre
- OP/OPD – outpatient/outpatient department
- SOP – surgical out-patients
- WHO – World Health Organization
Patient Status and Demographic Information
These abbreviations describe a patient's general state or personal details.
- ADLs – activities of daily living
- BNO – bowels not opened
- BO – bowels opened
- BM – bowel movement
- c/o – complains of
- decub. – lying down (Latin: decubitus)
- DOA – dead on arrival
- DOB – date of birth
- D&V – diarrhoea and vomiting
- F – female
- M – male
- M/F – male/female
- M/W/S – married/widow(er)/single
- S – single
- W – widow/widower
- D – divorced; died/dead
- G – gravidity
- Oed. – oedema
- PN – post natal
- PM – postmortem
- PU – passed urine
- NPU – not passed urine
- SOP – short of breath
- SOBOE – short of breath on exertion
- sl. – slight
- WNL – within normal limits
- YOB – year of birth
- NP – not palpable; nasal passage
- NA – not applicable
- OAP – old age pensioner
- GD – general condition
Specific Procedures and Devices
These terms refer to medical interventions or equipment.
- AED – automated external defibrillator
- CPR – cardio-pulmonary resuscitation
- DTP – diphtheteria, tetanus, pertussis
- IUD – intrauterine (contraceptive) device
- IVF – in vitro fertilization
- LP – lumbar puncture
- MMR – measles, mumps and rubella
- POP – plaster of Paris; progesterone only pill
- T&A – tonsils and adenoids
Other Important Abbreviations
- DNA – deoxyribonucleic acid
- DD – dangerous drug
- DTs – delirium tremens (Latin)
- FB – foreign body
- FUO – fever of unknown origin
- GTN – glyceryl trinitrate
- HBP – high blood pressure
- ICF – intracellular fluid
- ECF – extracellular fluid
- IP – in-patient; interphalangeal joint
- LBP – low back pain; low blood pressure
- LVD – left ventricular dysfunction
- LVE – left ventricular enlargement
- LVF – left ventricular failure
- LVH – left ventricular hypertrophy
- PMB – postmenopausal bleeding
- RTA – road traffic accident
- RVE – right ventricular enlargement
- RVH – right ventricular hypertrophy
- SM – systolic murmur
- SB – still-born
- sep. – separated
- UV/UVL – ultra-violet/ultra-violet light
- VSD – ventricular septal defect
- VP – venous pressure
Frequently Asked Questions About Medical Abbreviations
Why are medical abbreviations used in healthcare?
Medical abbreviations are primarily used to save time and space in medical documentation, which can be critical in fast-paced healthcare environments. They allow for quick, concise, and standardized communication among healthcare professionals.
How can students effectively learn medical abbreviations?
Students can effectively learn medical abbreviations by regular review, using flashcards, associating abbreviations with their full terms, and practicing their usage in context. Breaking down lists into categories, like this essential medical abbreviations guide, can also make the learning process more manageable.
Are there any abbreviations that are commonly misused or confusing?
Yes, some abbreviations can be confusing due to similar spellings or multiple meanings, like 'MS' which can mean multiple sclerosis or mitral stenosis. Healthcare organizations often publish lists of