2.1 Passage

Question 1

Narrowest portion of the pelvic INLET

Answer 1

Obstetric conjugate

Question 1

Distance from the upper margin of the pubis to the sacral promontory

Answer 1

True/anatomical conjugate

Question 2

Part of the pelvis above the linea terminalis wth no obstetrical significance.

Answer 2

False (MAjor) Pelvis

Question 2

Structures of the posterior border of true pelvis

Answer 2

Sacrum and coccyx

Remember:

 Posterior: anterior surface of sacrum, coccyx
 Lateral: ischial spine/bones, sacrosciatic notch and ligament
 Anterior: pubis, obturator foramen, pubic rami
 Inferior: ischial tuberosity
 Superior: linea terminalis

Question 2

This is the joint between the sacrum and the iliac portion of innominate bones

Answer 2

Sacroiliac joint

Question 2

What is the normal value of the obstetric conjugate?

Answer 2

10 cm

Question 3

A pelvic joint that consists of fibrocartilage and the superior and inferior pubic ligaments

Answer 3

Symphysis pubis

Question 4

What is the normal angle of the pubic arch?

Answer 4

90-100 degrees

Question 5

The only AP diameter that can be measured clinically by doing an internal examination

Answer 5

Diagonal conjugate

Question 7

The bony pelvis is made up of how many bones?

Answer 7

Four!

(2) innominate bones (ilium, ischium, pubis)
(1) sacrum
(1) coccyx

Question 8

This position causes the greatest upward gliding movement of sacroiliac joints thus increasing the diameter of outlet by 1.5-2.0 cm

Answer 8

Dorsal Lithotomy Position

Question 9

True conjugate = ? (formula)

Answer 9

TC = DC - 1.2 cm

Question 10

Enumerate the different planes of the pelvis. (3)

Answer 10

Pelvic inlet

pelvic outlet

pelvic midplane

Actually 4 pero no OB significance daw to:

plane of greatest dimensions: AP & transverse diameter is 12.5

Question 11

What is the inferior border of false pelvis?

Answer 11

Linea terminalis

Remember:

 Posterior: lumbar vertebra
 Lateral: iliac fossa
 Anterior: abdominal muscles
 Inferior: linea terminalis

Question 12

the greatest distance between linea terminalis on either side (NV >13.5cm)

Answer 12

Transverse diameter of the pelvic INLET

Question 13

Extend from the sacroiliac synchondrosis to the iliopectineal prominence of the opposite side of the pelvis

Answer 13

Oblique diameter of the pelvic inlet

Question 15

OB conjugate, diagonal conjugate and true/anatomical conjugate are the _____ diameter of the pelvic inlet

Answer 15

antero-posterior diameter

Question 17

Distance from the lower margin of the pubis to the sacral promontory. (NV > 11.5 cm)

Answer 17

Diagonal Conjugate

Question 18

The shortest distance between the promontory of the sacrum and symphysis pubis

Answer 18

Obstetric conjugate

Question 19

How many centimeters will you (subtract/add?) from the diagonal conjugate to get the Obstetric conjugate?

Answer 19

SUBRTACT 1.5-2.0 cms

Question 20

This is the rounder arch formed by descending inferior rami of pubic bones at angle of 90-100 degrees

Answer 20

Pubic arch

Question 21

Estimates pelvic inlet by internal exam

Answer 21

Clinical Pelvimetry

Question 23

What separates the false pelvis from the true pelvis?

Answer 23

Linea terminalis

Question 24

What do you mean by fetus is engaged?

Answer 24

If the BI-PARIETAL diameter of the fetal head has passed through the pelvic inlet

Question 25

Identify A, B, C and E.

Answer 25

A = sacral promotory B = True/anatomical conjugate C = diagonal conjugate E = pelvic inlet

Question 26

Narrowest portion of the ENTIRE pelvis.

Answer 26

Pelvic midplane diameter

Question 27

Pelvic midplane is at the level of what structure in the pelvis?

Answer 27

ischial spine

Question 28

Most common type of pelvis that is found in almost 50% of women.

Answer 28

Gynecoid pelvis

Question 29

Anterior diameter of the inlet is greater than the transverse resulting in oval anteroposteriorly. What pelvic shape?

Answer 29

Anthropoid

Question 30

Rarest form of pelvic shape.

Answer 30

Platypelloid

Question 31

Posterior sagittal diameter at the inlet is much shorter than the anterior sagittal diameter . What pelvic shape?

Answer 31

Android

Question 32

Sinong doktor ang mahilig magkamot?

Answer 32

Doc maka-Teh