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 82-year-old patient from the long-term care facility is brought to the emergency department with wet-sounding cough and increased work of breathing. Vital signs are normal with the exception of tachypnea and an oxygen saturation of 91% on room air. Upon auscultation, the nurse notes diminished breath sounds over the right upper lobe. Chest radiograph indicates consolidation in the right upper lobe of the lung. The nurse prepares the patient for which test?

The patient presents to the emergency room complaining that his heart is racing and he feels dizzy. His heart rate is 220 bpm, his blood pressure is 80/40 mmHg, and his capillary refill is 5 seconds. He is diaphoretic and is becoming increasingly lethargic. The nurse anticipates which order first?