Explanation
(A) The foramen ovale permits a percentage of the blood to shunt from the right atrium to the left atrium. The blood then goes to the left ventricle, permitting systemic fetal circulation with blood containing a higher O2 saturation. (B) As the blood shunts from the right atrium to the left atrium, the pulmonary system is bypassed.
The fetus receives O2 from the maternal circulation, thereby permitting the partial bypass of the pulmonary system. (C) The foramen ovale is locatedin the atrial septum of the heart and does not affect the liver. (D) The superior vena cava returns blood to the heart, bringing blood to the location of the foramen ovale.

Section: Questions Set C
Explanation:
(A) The Electra complex is the erotic attachment of the female child to the father. (B) The Oedipus complex is characterized by jealousy toward the parent of the same sex and erotic attachment to the parent of the opposite sex. (C) The superego as described by Freud is the part of personality that is associated with internalized parental and societal control. (D) The ego as described by Freud is the part of personality that is associated with reality assessment.

Explanation/Reference:
Explanation:
(A, B, C) No amount of alcohol has been determined safe for pregnant women. Alcohol should be avoided owing to the risk of fetal alcohol syndrome. (D) The recommended safe dosage of alcohol consumption during pregnancy is none.

(A) Sodium polystyrene sulfonate administration will not increase serum magnesium. Hypermagnesemia is virtually unknown except for clients in renal failure. (B) Sodium polystyrene sulfonate administration is not known to increase serum bicarbonate. (C) Decrease in serum potassium, the expected response of sodium polystyrene sulfonate, is secondary to the binding of this drug and potassium in the colon, and potassium is removed through the feces. (D) Serum calcium may actually increase with sodium polystyrene sulfonate administration, especially if calcium chloride is administered concurrently with this drug.

(A)
There may be a medical emergency that takes top priority; however, the basis of the problem is emotional. (B) The problem is a physical manifestation of an emotional conflict.
(C)
The bleeding ulcer can be life threatening. (D) For lifestyle change to occur, the client must participate in the planning of his care so that he is committed to changes that will have positive results.