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CURRENT Medical Diagnosis & Treatment 2013 Chapter 19. Obstetrics & Obstetric Disorders Sections: Diagnosis of Pregnancy, Essentials of Prenatal Care, Nutrition in Pregnancy, Prevention of Rhesus Alloimmunization, Lactation, Travel & Immunizations During Pregnancy, Obstetric Complications of the First & Second Trimester, Vomiting of Pregnancy (Morning Sickness) & Hyperemesis Gravidarum (Pernicious Vomiting of Pregnancy), Spontaneous Abortion, Recurrent (Habitual) Abortion, Ectopic Pregnancy, Gestational Trophoblastic Disease (Hydatidiform Mole & Choriocarcinoma), Obstetric Complications of the Second & Third Trimester, Preeclampsia-Eclampsia, Acute Fatty Liver of Pregnancy, Preterm Labor, Third-Trimester Bleeding, Obstetric Complications of the Peripartum Period, Puerperal Mastitis, Chorioamnionitis & Metritis, Medical Conditions Complicating Pregnancy, Anemia, Antiphospholipid Syndrome, Thyroid Disease, Diabetes Mellitus, Chronic Hypertensive Disease, Heart Disease, Asthma, Seizure Disorders, Infectious Conditions Complicating Pregnancy, Urinary Tract Infection, Group B Streptococcal Infection, Varicella, Tuberculosis, HIV/AIDS during Pregnancy, Maternal Hepatitis B & C Carrier State, Herpes Genitalis, Syphilis, Gonorrhea, & Chlamydia trachomatis Infection, Surgical Complications During Pregnancy, Surgical Complications During Pregnancy: Introduction, Cholelithiasis, Cholecystitis, & Intrahepatic Cholestasis of Pregnancy, Appendicitis, Carcinoma of the Breast, Ovarian Tumors. Topics Discussed: obstetrics. Excerpt:"It is advantageous to diagnose pregnancy as promptly as possible when a sexually active woman misses a menstrual period or has symptoms suggestive of pregnancy. In the event of a desired pregnancy, prenatal care can begin early, and potentially harmful medications and activities such as drug and alcohol use, smoking, and occupational chemical exposure can be halted. In the event of an unwanted pregnancy, counseling about adoption or termination of the pregnancy can be provided at an early stage.All urine or blood pregnancy tests rely on the detection of human chorionic gonadotropin (hCG) produced by the placenta. hCG levels increase shortly after implantation, approximately double every 48 hours, reach a peak at 5075 days, and fall to lower levels in the second and third trimesters. Laboratory and home pregnancy tests use monoclonal antibodies specific for hCG. These tests are performed on serum or urine and are accurate at the time of the missed period or shortly after it.Amenorrhea, nausea and vomiting, breast tenderness and tingling, urinary frequency and urgency, "quickening" (perception of first movement noted at about the 18th week), weight gain...."
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