The nurse is providing pre-procedure education to a patient prior to surgery requiring general anesthesia. Which question by the patient indicates a need for further teaching?

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?

The nurse ensures which laboratory study is collected regularly to monitor the effectiveness and safety of the patient's continuous unfractionated heparin infusion?