A nurse is assessing a client who has a complete heart block and is receiving transcutaneous pacing. Which of the following findings indicates to the nurse that the treatment is effective?

A. Crepitus is a finding associated with subcutaneous emphysema or gas accumulation under the skin, typically not directly related to right ventricular heart failure.

B. Right ventricular heart failure can lead to increased pressure in the pulmonary artery, resulting in symptoms such as dyspnea, fatigue, and possibly right-sided heart murmurs.

C. Hepatosplenomegaly (enlargement of the liver and spleen) is more commonly associated with conditions such as liver cirrhosis, not specifically right ventricular heart failure.

D. Confusion is not typically associated with right ventricular heart failure unless there are complications such as hypoxemia or impaired cerebral perfusion.

A. Levothyroxine is a thyroid hormone replacement medication commonly used to treat hypothyroidism. It is not associated with teratogenic effects when used appropriately.

B. Phenytoin is an anticonvulsant medication that is known to be teratogenic, especially when used during the first trimester of pregnancy. It is associated with an increased risk of congenital malformations, such as cleft palate and heart defects, in infants born to mothers who take the medication during pregnancy.

C. Magnesium oxide is a mineral supplement commonly used to treat constipation during pregnancy. It is not associated with teratogenic effects when used appropriately.

D. Ferrous sulfate is an iron supplement commonly used to treat chronic anemia during pregnancy. It is not associated with teratogenic effects when used appropriately.