Prenatal Care (Pelvis) Flashcards
A bony ring formed by 4 united bones
Pelvis
What are the 4 bones that form the pelvis?
- Two innominate bones
- Coccyx
- Sacrum
The 3 parts of each innominate bone are:
- Ilium
- Ischium
- Pubis
What forms the upper posterior portion of the pelvic ring?
Sacrum
What is used as a landmark to identify pelvic measurements?
Sacrum
What is just below the sacrum?
Coccyx
The pelvis is divided into two parts:
- False pelvis (superior half)
- True pelvis (inferior half)
A pelvic examination reveals information on the health of both ___________ and ___________ reproductive organs
internal and external
Woman should _______ to reduce her __________ _________ and then lie in a __________ position
void; bladder size
lithotomy
(Types of Pelvis)
What is also known as a male pelvis?
Android
(Types of Pelvis)
The pubic arch in this type of pelvis is extremely narrow
Android
(Types of Pelvis)
The fetus may have difficulty exiting in this pelvis
Android
(Types of Pelvis)
What is the ape-like pelvis?
Anthropoid
(Types of Pelvis)
The transverse diameter in this pelvis is narrow and the anteroposterior diameter of the inlet is larger than normal
Anthropoid
(Types of Pelvis)
The structure of this pelvis does not accommodate the fetal head
Anthropoid
(Types of Pelvis)
What is known as the “normal” female pelvis?
Gynecoid
(Types of Pelvis)
The inlet of this pelvis is rounded forward and backward, and the pubic arch is wide
Gynecoid
(Types of Pelvis)
What pelvic type is ideal for childbirth?
Gynecoid
(Types of Pelvis)
What pelvic type is known as the “flattened” pelvis?
Platypelloid
(Types of Pelvis)
The inlet of this pelvis is an oval, smoothly curved and the anteroposterior diameter is shallow
Platypelloid
(Types of Pelvis)
The fetal head in this pelvis may not be able to rotate
Platypelloid
What is the distance between the anterior surface of the sacral prominence and the anterior surface of the inferior margin of the symphysis pubis?
Diagonal Conjugate
What is the adequate measurement of the Diagonal Conjugate?
12.5 cm
What is the measurement between the anterior surface of the sacral prominence and the posterior surface of the inferior margin of the symphysis pubis?
True Conjugate or Conjugate Vera
What is the average diameter of the True Conjugate?
10.5 - 11 cm
What is the tranverse diameter of the outlet?
Ischial Tuberosity
PeWhat is the adequate measurement of the Ischial Tuberosity?
11 cm
