Explanation/Reference:
Explanation:
(A) Incorrect application of Nägele's rule: correctly subtracted 3 months but subtracted 7 days rather than added. (B) Incorrect application of Nägele's rule: correctly subtracted 3 months but did not add 7 days. (C) Correct application of Nägele's rule: correctly subtracted 3 months and added 7 days. (D) Incorrect application of Nägele's rule: correctly subtracted 3 months but added 14 days instead of 7 days.

Section: Questions Set C
Explanation:
(A) Respiratory alkalosis is determined by elevated pH and low PaCO2. (B) Respiratory acidosis is determined by low pH and elevated PaCO2. (C) Metabolic alkalosis is determined by elevated pH and HCO3.(D) Metabolic acidosis is determined by low pH and HCO3.

Explanation/Reference:
Explanation:
(A) S1 and S2 in an infant with coarctation of the aorta are usually normal. S3 and S4 do not exist with this diagnosis. (B) Either no murmur will be heard or a systolic murmur from an associated cardiac defect will be heard along the left upper sternal border. A diastolic murmur is not associated with coarctation of the aorta. (C) Pulse pressure differences of>20 mm Hg exist between the upper extremities and the lower extremities. It is important to evaluate the upper and lower extremities with the appropriate- sized cuffs. (D) Femoral and pedal pulses will be diminished or absent in infants with coarctation of the aorta.

(A) A residual volume of 20 mL is not excessive. (B) A residual volume of 25 mL is not excessive. (C) A residual volume of 30 mL is not excessive. (D) Tube feedings should be withheld and physician notified for residual volumes of 50-100 mL.

Section: Questions Set F
Explanation:
(A) Women who smoke during pregnancy are at increased risk for miscarriage, preterm labor, and IUGR in the fetus. (B) Although smoking produces harmful effects on the maternal vascular system and the developing fetus, it has not been directly linked to fetal anomalies. (C) Smoking during pregnancy has not been directly linked to anemia in the fetus. (D) Smoking during pregnancy has not been linked to nicotine withdrawal symptoms in the newborn.