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The hook effect refers to the prozone phenomenon, also known as antibody excess, or the postzone phenomenon, also known as antigen excess. It is an immunologic phenomenon whereby the effectiveness of antibodies to form immune complexes can be impaired when concentrations of an antibody or an antigen are very high.
A pregnancy test is used to determine whether a female is pregnant or not. The two primary methods are testing for the female pregnancy hormone ( human chorionic gonadotropin (hCG)) in blood or urine using a pregnancy test kit, and scanning with ultrasonography . [ 1 ]
Signs and symptoms of early pregnancy may include missed periods, tender breasts, morning sickness (nausea and vomiting), hunger, implantation bleeding, and frequent urination. [1] Pregnancy may be confirmed with a pregnancy test. [7] Methods of birth control—or, more accurately, contraception—are used to avoid pregnancy.
If you're wondering "am I pregnant?" take our 10-question quiz to find out more.
Rupture of membranes (ROM) or amniorrhexis is a term used during pregnancy to describe a rupture of the amniotic sac. [1] Normally, it occurs spontaneously at full term either during or at the beginning of labor.
Dr. Mark Greene encounters the case of a pregnant woman suffering from what he initially thinks is a urinary tract infection, due to protein in the urine, but what is actually eclampsia. With the obstetrics attending unavailable, he decides to try to deliver her baby in the ER, first through vaginal delivery.
1. The baby may turn to a breech position, making birth more difficult if the membranes are ruptured before head engagement. [5] 2. There is an increased risk of umbilical cord prolapse. [5] 3. There is an increased risk of infection if there is a prolonged time between rupture and birth. [5]
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