Maternal & Fetal Physiology

Question 1

Maternal/Fetal Blood Flow

Answer 1

http://www.youtube.com/watch?v=uwswhoKfkmM

Question 2

Blood comes from the mother’s uterine artery to the placenta, then travels where and through what shunt?

Answer 2

Question 3

Maternal/Fetal Blood Flow

Explain blood flow from the fetal right atrium

Answer 3

Question 4

Maternal/Fetal Blood Flow

What is the reason blood is shunted around the lungs of the fetus?

Answer 4

Question 5

Maternal/Fetal Blood Flow

Where does fetal blood go after it is ejected through the fetal aorta?

Answer 5

Question 6

Foramen Ovale

Answer 6

Question 7

Ductus Arteriosus

Answer 7

http://www.youtube.com/watch?v=5iWbYGkCtCg

Question 8

Drugs that Affect the Ductus Arteriosus

Answer 8

Question 9

Fetal Circulation Changes At Birth (4)

Answer 9

1. At birth, the baby breathes, and the lungs expand
2. Because of the increase in PaO2, blood flow to the pulmonary artery and left atrium increases, causing pressure in the left atrium to increase
3. The increased left atrial pressure causes the foramen ovaleto close
4. The increased aortic pressure causes the ductus arteriosusto close

Question 10

Respirations at Birth

Answer 10

Question 11

Review Of “P50” Values On The HbO2 Curve

Answer 11

Question 12

“P50”Values On The HbO2 Curve

Answer 12

Question 13

Clinical Relevance Of The “P50” Values In Pregnancy

Answer 13

Question 14

Fetal Hypoxia Etiologies

Answer 14

Question 15

Aortocaval Compression

Answer 15

Question 16

Symptoms Of Aortocaval Compression (3)

Answer 16

Question 17

Stage 1 Labor

Answer 17

Question 18

Initial (Latent) Phase of Stage 1 Labor

Answer 18

Question 19

Later (Active) Phase of Stage 1 Labor

Answer 19

Question 20

Stage 2 Labor

Answer 20

Question 21

Stage 3 Labor

Answer 21

Question 22

Cardiovascular Changes (6)

Answer 22

1. Increased blood volume
2. Increased cardiac output
3. Increased clotting factor concentration (hypercoaguablestate)
4. Decreased SVR
5. ECG changes (left axis deviation)
6. Iron anemia

Question 23

CNS Changes

Answer 23

Question 24

What are the considerations for increased blood volume during pregnancy?

Answer 24

Question 25

Why would cardiac output increase during pregnancy? (2)

Answer 25

Question 26

What is the main reason for a drop in cardiac output during pregnancy?

Answer 26

Question 27

When does the greatest increase in cardiac output occur?

Answer 27

Question 28

Explain the physiology behind the hypercoagulable state during pregnancy?

Answer 28

Question 29

During pregnancy, what causes a decrease in SVR?

Answer 29

Question 30

What causes iron anemia?

Answer 30

Question 31

Respiratory Changes (3)

Answer 31

1. Hyperventilation
2. Rapid oxygen desaturation
3. Significant airway edema

Question 32

Why does hyperventillation occur during pregnancy, what physiological effects does that have?

Answer 32

Question 33

What causes rapid desaturation during pregnancy?

Answer 33

Question 34

Etiology of edematous airway in pregnant women

Answer 34

Question 35

GI Changes (3)

Answer 35

Question 36

ABG and Renal Changes

Answer 36