Aboion is defined as expulsion of fetus: TN 06
**Core Concept**
The definition of abortion in the context of obstetrics refers to the expulsion of a fetus from the uterus, which can be spontaneous or induced. This concept is crucial in understanding the various aspects of pregnancy, including termination, miscarriage, and stillbirth.
**Why the Correct Answer is Right**
The expulsion of a fetus from the uterus is a critical event in pregnancy, and its definition is essential for clinical diagnosis and management. The term "abortion" is often used interchangeably with "miscarriage," but technically, abortion refers to any expulsion of a fetus, regardless of the stage of pregnancy, whereas miscarriage specifically refers to the spontaneous expulsion of a fetus before 20 weeks of gestation.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not specify the expulsion of a fetus, which is the defining characteristic of abortion.
* **Option B:** This option is incorrect because it implies that abortion only occurs after 20 weeks of gestation, which is not accurate.
* **Option C:** This option is incorrect because it defines abortion as the termination of a pregnancy, which is a broader term that encompasses various methods of ending a pregnancy, including medical and surgical interventions.
**Clinical Pearl / High-Yield Fact**
It is essential to distinguish between spontaneous and induced abortion, as the management and counseling of patients differ significantly depending on the cause of the expulsion.
**Correct Answer: D. None of the above.**