Mrs. X, 20years with 30weeks of pregnancy, her parity is
**Core Concept**
The term "parity" in obstetrics refers to the number of times a woman has given birth to a fetus with a gestational age of 24 weeks or more. It is an essential parameter in understanding the reproductive history of a patient.
**Why the Correct Answer is Right**
The correct answer is based on the definition of parity. Since Mrs. X is in her 30th week of pregnancy, she is considered to have given birth to a fetus with a gestational age of 24 weeks or more, making this her first pregnancy.
* There is no need to calculate the gestational age in this case, as the question simply asks for the parity based on the given gestational age.
**Option A:**
This option is incorrect because parity refers specifically to the number of times a woman has given birth to a fetus with a gestational age of 24 weeks or more, not the number of times she has been pregnant.
**Option B:**
This option is incorrect because it is not clear what the term "multiparity" refers to in this context. Multiparity typically means having given birth to two or more children, but the question does not provide enough information to determine this.
**Option C:**
This option is incorrect because it is not clear what the term "primiparity" refers to in this context. Primiparity typically means giving birth to a child for the first time, but the question does not provide enough information to determine this.
**Option D:**
This option is incorrect because it is not a valid term in obstetrics.
**Clinical Pearl / High-Yield Fact**
Remember that parity is an essential parameter in understanding the reproductive history of a patient, and it is used to determine the risk of complications during pregnancy and childbirth.
**Correct Answer:** C.