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Health & Medicine63Updated Sep 24, 20265 pages

Comprehensive Guide to Obstetrics and Gynecology Exams

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Obstetrics and gynecology (OB/GYN) focuses on women's reproductive health, pregnancy, and childbirth. Understanding these examination procedures is essential for providing proper care during pregnancy, conducting preventive screenings, and supporting women through various reproductive health stages.
Lesson 13: Obstetrics and Gynecology Exams – page 1

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Obstetrics and Pregnancy Basics

Obstetrics is the medical field dedicated to caring for women during pregnancy, childbirth, and the postpartum period. Once pregnancy is confirmed through tests that detect the hCG hormone in urine or blood, the estimated delivery date (EDD) is calculated during the first prenatal visit.

The first prenatal visit includes a comprehensive gynecological history and health assessment. The medical assistant collects vital signs, weight measurements, and performs urinalysis. Pelvic measurements and serologic tests are conducted, and the fetal heart rate will be monitored at each subsequent visit.

Pregnancy spans approximately 266-280 days and is divided into three trimesters: first (weeks 1-14), second (weeks 15-28), and third (weeks 29 to delivery). Throughout pregnancy, ultrasounds track fetal growth and provide sonogram images.

Remember: Labor and delivery (parturition) progresses through three distinct stages: Stage 1 (onset of labor to complete cervical dilation), Stage 2 (complete dilation to birth), and Stage 3 (delivery of the placenta, usually within 10 minutes after birth).

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Pregnancy Complications and Gynecologic History

In medical terminology, abortion refers to both elective procedures and miscarriages. Spontaneous abortions occur naturally without an identifiable cause. These events can be classified as complete (when both fetus and placenta are expelled without intervention), incomplete (partial expulsion), or missed (when the fetus dies in utero and requires surgical removal).

Placenta previa is a serious condition where the placenta implants in the lower uterine area, blocking the cervical opening. While it sometimes migrates higher as pregnancy progresses, if it remains low, serious complications can occur. A cesarean section is performed when diagnosis is confirmed by ultrasound.

Maternal health conditions like gestational diabetes and hypertension commonly develop during pregnancy and require careful monitoring. These conditions can affect both mother and baby if not properly managed.

Pro Tip: A comprehensive gynecologic history includes age at menarche, menstrual cycle details, last menstrual period (LMP), breast abnormalities, sexual history, lifestyle factors, infections, last Pap smear, and pregnancy history—including gravida (number of pregnancies) and para (pregnancies carried beyond 20 weeks).

Lesson 13: Obstetrics and Gynecology Exams – page 3

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Gynecological Examination Procedure

Preparing for a gynecological exam requires careful attention to patient comfort and proper technique. Begin by assembling all materials, sanitizing your hands, introducing yourself, and explaining the procedure to the patient. Have the patient provide a urine sample if needed, then instruct them to change into a gown that opens in the front.

Position the patient properly for each part of the exam. Start with the patient sitting at the table's edge for the breast exam, then help them into the lithotomy position for the pelvic exam. Remember to keep the patient draped for privacy and adjust stirrups so their knees are comfortably rotated outward.

During the pelvic examination, direct light onto the perineum, warm the speculum, and assist the provider with instruments like the cytobrush and spatula for collecting cervical samples. For Pap test preparation, swirl the cervical specimen in preservative solution at least 10 times, then label and place it in a biohazard bag.

Important: Always follow proper infection control procedures throughout the exam—wear gloves, sanitize hands before and after, and properly clean, disinfect, and sterilize all equipment when finished.

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Breast Self-Examination Instructions

Teaching patients proper breast self-examination technique is crucial for early detection of abnormalities. Begin by explaining that the best time for self-examination is after showering when the skin is warm and moist. For menstruating women, recommend performing the exam right after their period ends; postmenopausal women should choose a consistent day each month.

Demonstrate the correct circular pattern technique using the finger pads of the three middle fingers. Show patients how to move from the axillary (armpit) region down to the ribs, back up to the clavicle, and across the sternum on both sides. Emphasize the importance of examining the entire breast tissue.

Visual inspection is equally important. Instruct patients to examine their breasts in front of a mirror with arms at their sides, then with hands on hips, and finally with arms raised above their head. They should look for changes in size, shape, contour, puckering, dimpling, or skin texture changes.

Learning Tip: Have patients provide a return demonstration using a teaching model to confirm their understanding. Provide educational materials like pamphlets or shower cards to reinforce proper technique, and always document the education in the medical record.

Lesson 13: Obstetrics and Gynecology Exams – page 5

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Prenatal Examination

The prenatal exam monitors both maternal and fetal health throughout pregnancy. Start by sanitizing your hands, introducing yourself, identifying the patient, and explaining the procedure. Basic measurements including weight, height, and blood pressure provide crucial information about the mother's health.

Urine testing is an essential component of prenatal care. While wearing gloves, collect a urine specimen and perform urinalysis to detect protein, glucose, or ketones—all potential indicators of pregnancy complications that require medical attention.

For fetal assessment, assist the provider with using a fetoscope or Doppler to monitor the baby's heartbeat. Apply ultrasound gel to the abdomen before handing the device to the provider. After the procedure, clean the equipment properly and help the patient off the examination table.

Clinical Note: The prenatal exam changes throughout pregnancy as different assessments become necessary. In later trimesters, measurements like fundal height (distance from pubic bone to top of uterus) help track fetal growth.

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