A nurse is interpreting the cardiac rhythm strip of a client who was admitted with syncope.
Which of the following images indicates that the client has atrial fibrillation?

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.

A. Portable suction may be needed for some infants but is not specifically indicated for tetralogy of Fallot.

B. A cervical collar is used for neck support in patients with suspected cervical spine injuries and is not indicated for tetralogy of Fallot.

C. A hemodialyzer is used for renal replacement therapy and is not indicated for tetralogy of Fallot.

D. A pulse oximeter is essential for monitoring oxygen saturation levels in infants with tetralogy of Fallot, as they may experience cyanosis and hypoxemia. Monitoring oxygen saturation helps guide interventions and management.