Helpful OB Medical Abbreviation: Definition, Types, and Benefits

OB Medical Abbreviation

OB – Obstetrician

Gyn – Gynecologist

OB-Gyn – Obstetrics & Gynecology

OB Medical Abbreviation

If you’re wondering what the OB medical abbreviation means, you’ve come to the right place. An obstetrician is a medical specialist who cares for pregnant women and delivers newborns. OBGyn or Obstetrics and gynecology (OBG) is a medical specialty concerned with the female reproductive system, including pregnancy and childbirth.

In this post, we will cover the various varieties of OB medical abbreviations, their clinical applications, and the advantages of utilizing the OB abbreviation.

ObGyn Medical Terminology List

The following are some of the most commonly used OB medical acronyms in clinical practice:

AC — Abdominal circumference

ACH — After coming head

AD — Autosomal Dominant

AFI – Amniotic Fluid Index

AIDS — Acquired Immuno Deficiency Syndrome

AMTSL — Active Management of Third Stage of Labour

ANC — Antenatal clinic

APH — Antepartum hemorrhage

AR – Autosomal Recessive

ARM – Artificial rupture of the membranes

ASD – Atrial Septal Defect

AV — Anteverted (uterus)

BBA — Born before arrival (of the midwife)

BFHI – Baby Friendly Hospital Initiative

BMI — Body mass index

BOH — Bad obstetric history

BPD — Biparietal diameter

BPS – Biophysical Score

BPP — Biophysical Profile

BSO — Bilateral salpingo-oophorectomy

BTB — Breakthrough bleeding

CAVSD – Combined atrial ventricular septal defect

CCAM – Congenital Cystic Adenomatoid Malformation

CCT – Controlled cord traction

CDH – Congenital Diaphragmatic Hernia

CEFM — Continuous Electronic Fetal Monitoring

CF – Cystic Fibrosis

CH – Cystic Hygroma

CIN – Cervical intraepithelial neoplasia

CISC – Clean intermittent self-catheterization

CLC — Community-led care

CM – Cisterna Magna

COCP — Combined oral contraceptive pill
CPD — Cephalo-pelvic disproportion

CRL – Crown-rump length

CSCaesarean section

CSSM — Child Survival and Safe Motherhood

CT — Combined Test (or CT scan)

CTG – Cardiotocograph

CVS – Chorionic Villous Sample

DA – Duodenal Atresia

DCDA — Dichorionic Diamniotic Twins

DIC – Disseminated intravascular coagulation

DOA — Detrusor overactivity

DOB – Date of birth

DS — Downs syndrome

DUB — Dysfunctional uterine bleeding

DV – Ductus Venosus

DVT – Deep venous thrombosis

EB – Endometrial biopsy

EC – Emergency contraception

ECV – External cephalic version

EDD – Estimated date of delivery

EDF – End diastolic flow (umbilical cord Doppler)

EFW – Estimated fetal weight

ERPC – Evacuation of retained products of conception

ET – Endometrial thickness

EUA – Examination under anesthesia

FBS – Fetal blood sample

FGM – Female genital Mutilation

FH – Fetal heart

FHH – Fetal heart heard

FHS – Fetal heart sound

GDM – Gestational Diabetes Mellitus

GFR – Glomerular Filtration Rate

HELLP – Hemolysis, Elevated Liver Enzymes, Low Platelets

IUGR – Intrauterine Growth Restriction

LGA – Large for Gestational Age

NICU – Neonatal Intensive Care Unit

NST – Non-Stress Test

OCP – Oral Contraceptive Pill

PROM – Premature Rupture of Membranes

PPHPostpartum Hemorrhage

PROM – Premature Rupture of Membranes

P/V: Per Vaginal

SROM – Spontaneous Rupture of Membranes

TORCH – Toxoplasmosis, Other (syphilis, varicella-zoster virus), Rubella, Cytomegalovirus, and Herpes

VBAC – Vaginal Birth After Cesarean

VTE – Venous Thromboembolism

ZIFT – Zygote Intrafallopian Transfer

What Are Some Frequent Errors About the OB Medical Abbreviation?

Another prevalent misunderstanding regarding the OB medical abbreviation is that it is solely used by doctors and nurses. In truth, recognizing medical abbreviations like OB can benefit patients and their families as well. Patients who understand what their doctor is saying can feel more powerful and involved in their own care. This can result in improved health outcomes and increased patient satisfaction.

How Can Healthcare Professionals Make Certain That Medical Abbreviations Are Used Safely and Effectively?

While medical abbreviations such as OB can be extremely useful, they can also be hazardous if used wrongly. Healthcare professionals should follow a few best practices to ensure that medical abbreviations are used safely and effectively:

  1. Use only acronyms approved by your organization: Healthcare providers should only use abbreviations recognized by their organization. The use of non-standard abbreviations might cause misunderstanding and errors.

2. Unfamiliar abbreviations should be spelled out and explained to patients: When using an unfamiliar abbreviation with a patient, healthcare providers should spell it out and explain what it means.

3. When in doubt, double-check: If a healthcare provider is unsure about an abbreviation, they should check with a colleague or look it up in a reference book.

4. Add context: When using an abbreviation, healthcare providers should always include context so that people understand what it means.


Finally, the abbreviation OB refers to an obstetrician and is used in patient care, medical documentation, medical billing, and coding. Obstetricians are physicians who focus on pregnancy, delivery, and postpartum care. They are also known as gynecologists, as they treat women during their reproductive years. While medical abbreviations such as OB can be extremely useful, they can also be hazardous if used wrongly. To ensure that medical abbreviations are used safely and efficiently, healthcare providers should follow best practices.