The nurse is preparing to discharge the patient following surgical creation of an arteriovenous fistula. For which complication is this patient most at risk?

The patient is brought to the emergency department (ED) after being found on the floor in the garage by his wife. His right cheek balloons with each expiration and his right leg drags when he walks. While being assisted to the magnetic resonance imaging suite, the patient’s facial drooping resolves and he no longer walks with a limp. Which action does the nurse take first?

A neonate is born at full term to a mother who did not receive prenatal care. The neonate required moderate resuscitation at birth. Upon assessment, the nurse notes poor muscle tone, a protruding tongue, low nasal bridge, and low-set ears. A loud continuous “machine-like” heart murmur is heard. The patient requires 85% FiO2 to maintain an oxygen saturation above 90%. Which of the following tests is the next best diagnostic step in the management of this patient?