NORCET 10 OBG Important Topics: Complete Preparation for Obstetrics & Gynaecology

Obstetrics and Gynaecology (OBG) is one of the most important subjects in the NORCET examination. A significant number of questions are asked from this section, making it crucial for aspirants to focus on high-yield topics and recent updates.

The subject requires a strong understanding of clinical concepts, diagnostic methods, and practical applications. Questions are often scenario-based and image-based, testing both theoretical knowledge and clinical decision-making skills.

Obstetrics and Gynaecology for NORCET 

Obstetrics and Gynaecology (OBG) constitute a significant portion of the NORCET examination. Mastering key concepts, understanding diagnostic criteria, and being familiar with recent guidelines are crucial for success. Check frequently tested areas, practical applications, and common pitfalls to ensure comprehensive preparation.

Obstetrical History Taking

Focus on Gravida, Parity, Abortion, Living children (GPAL) / GTPAL (Gravida, Term, Preterm, Abortion, Living children) and parity. Scenario-based questions often require GTPAL calculation from patient history.

Calculation of Expected Date of Delivery (EDD)

The Expected Date of Delivery (EDD) is calculated using Naegele's Rule when the Last Menstrual Period (LMP) is known.

Fetal Skull Diameters

Questions cover longest and shortest diameters, including mentovertex, occipitofrontal, and suboccipitobregmatic diameters. Recall all fetal skull diameters.

Pelvis

This is a highly important topic. Expect questions on:

• Pelvic types.

• Image-based questions (e.g., Naegele's pelvis, Robert's pelvis).

• Abnormalities and pelvic diameters.

Fetus in Uterus

Topics include:

• Fetal lie

• Fetal attitude

• Fetal presentation

• Presenting part

• Denominator

• Fetal position
  Image-based questions are common.

Fetal Skull Abnormalities

It is crucial to differentiate between Caput Succedaneum and Cephalhematoma. Image-based questions using real images are common to test this differentiation.

Leopold's Maneuvers

These four obstetrical grips include:

1. Fundal grip

2. Lateral grip

3. Pawlik's grip

4. Pelvic grip

Labor

Focus areas:

• Stages of labor (First, Second, Third, Fourth stages).

• Phases within each stage.

• Duration of stages and phases.

• Contraction patterns (frequency, duration, intensity).

Partograph and Labor Care Guide

Knowledge of latest guidelines for the partograph and labor care is essential. According to new guidelines, cervical dilation plotting starts from 5 cm.

Antenatal Care

Antenatal visits are a very important aspect of antenatal care, and questions have been asked on this topic.

Anemia Mukt Bharat Program

This program is a frequent topic in NORCET.

• Dosage of Iron Folic Acid (IFA) supplements: 60 mg elemental iron and 500 micrograms folic acid.

• IFA supplementation starts from the second trimester and continues for 180 days postpartum.

Investigations in Pregnancy

Important investigations include:

• Non-Stress Test (NST)

• Contraction Stress Test (CST)

• Biophysical Profile (BPP)

Prenatal Diagnostic Procedures

Key procedures:

• Alpha-fetoprotein (AFP).

• Nuchal Translucency (NT) scan (Anti-NB scan): Used for Down syndrome screening.

• Chorionic Villus Sampling (CVS).

• Amniocentesis: Expect image-based questions for this procedure.

Anemia in Pregnancy

It is important to know the diagnostic criteria for anemia in pregnancy.

Gestational Diabetes Mellitus (GDM)

The Oral Glucose Tolerance Test (OGTT) is a key diagnostic test for GDM.

Pregnancy-Induced Hypertension (PIH)

Detailed knowledge of preeclampsia and eclampsia is required. Focus on the use of Magnesium Sulfate (MgSO4) in managing these conditions.

Antepartum Hemorrhage (APH)

This is a favorite topic, with two particularly important conditions: Abruptio Placentae and Placenta Previa. Questions on Placenta Previa are highly anticipated, especially regarding new changes in its classification.

Postpartum Hemorrhage (PPH)

There is a very high chance of questions on PPH due to recent updates in its definition and management.

• Previous definition: Blood loss > 500 ml.

• New definition: Blood loss > 300 ml if the female is hemodynamically unstable (BP < 100/60 mmHg, shock index > 1, pulse rate > 100 bpm).

• Changes in drug management for PPH are also important.

Abnormalities of Placenta and Cord

Recall different types of placental abnormalities, often with images:

• Succenturiate placenta

• Marginal placenta

• Velamentous placenta

• Battledore placenta

Amniotic Fluid and its Abnormalities

Questions relate to:

• Color of amniotic fluid: e.g., golden color and green color as indicators.

• Conditions like polyhydramnios and oligohydramnios.

• Normal amniotic fluid volume: 600-800 ml, specifically 800 ml at term.

Abortion

This is a frequently asked topic in NORCET.

• Types of abortion (scenario-based questions with symptoms).

• Management.

• MTP Act (Medical Termination of Pregnancy Act), especially the new amendment of 2021.

Ectopic Pregnancy

This is an important clinical condition.

Twin Pregnancy

Recent questions have focused on twin placentation. Ultrasound signs such as the Twin Peak Sign (Lambda Sign) may be asked as image-based questions.

Molar Pregnancy (Hydatidiform Mole)

This topic has been repeatedly asked.

• Ultrasound appearance: "Snowstorm appearance."

• Clinical presentation: Grape-like clusters expelled from the vagina.

• Image-based questions are possible for these features.

Active Management of Third Stage of Labor (AMTSL)

This is an important topic, frequently asked, emphasizing recent updates.

Cord Prolapse

Understanding cord prolapse and its associated images is important.

Shoulder Dystocia and Breech Presentation

Image-based questions on the maneuvers used for shoulder dystocia and breech presentation are common.

Episiotomy

A NORCET topic covering:

• Image-based questions of episiotomy scissors.

• Most common types, indications, and anesthesia used.

Instrumental Delivery (Forceps and Vacuum)

Questions on both forceps and vacuum extraction have been asked.

Puerperium Period: Normal Physiology and Problems

• Definition: The puerperium lasts for six weeks postpartum.

• Normal physiological changes during this period.

• Common problems: e.g., breast complications (breast engorgement), infections like Puerperal Pyrexia.

Physiological Changes and Reproductive Signs in Pregnancy

• Reproductive signs: Hegar's sign (image-based questions), Jacquemier's sign, Chadwick's sign.

• Physiological changes: Questions related to breast changes and cardiovascular changes have been asked.

Image-Based Questions (Comprehensive Review)

This is a critical area for the exam. Thorough review of images is necessary for:

• Instruments, Maneuvers, Placental abnormalities, Conjoined twins.

• Contraceptives.

• NST and CST reports: Identify early, late, and variable decelerations, and differentiate normal from abnormal reports.

• Ultrasound images, Reproductive signs (e.g., Hegar's sign).

• Placental separation signs (Schultze method, Matthews-Duncan method).

• Cord control contraction, Obstetrical grips.

• Fetal position, Fetal presentation.

Important Drugs

Knowledge of specific drugs should be at your fingertips:

• Drugs for PPH (according to recent guidelines).

• Oxytocin, Magnesium Sulfate (MgSO4), Prostaglandins, Betamethasone.

Teratogenic Drugs

Teratogenic drugs are contraindicated in pregnancy as they can cause congenital anomalies. It is important to know which drugs are teratogenic and the specific anomalies they can cause.

Disorders of Menstruation (Gynaecology)

While 80-90% of NORCET OBG questions are typically from Obstetrics, 5-10% can be from Gynaecology. Disorders of menstruation and associated terminologies are important.

PCOS and Fibroid Uterus

These are common gynaecological conditions: Polycystic Ovary Syndrome (PCOS) and Fibroid Uterus.

Pelvic Inflammatory Disease (PID)

Definition and management of Pelvic Inflammatory Disease (PID) are important.

Asherman's Syndrome and Vaginitis

• Asherman's Syndrome.

• Vaginitis: Questions often involve symptoms (e.g., greenish vaginal discharge) and most common affected populations.

Screening Methods for Cervical Cancer

This is a highly important topic.

Lochia

Questions related to lochia (postpartum vaginal discharge) have been asked.

Signs of Pregnancy (Presumptive, Probable, Positive)

It is important to differentiate between the presumptive, probable, and positive signs of pregnancy.

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