Final answer:
The most important information communicated to the nurse for Carla Hernandez's care expedited care would be a critical medical update, but specific details are not provided to ascertain what it was.
Step-by-step explanation:
The most important piece of information communicated to the nurse that expedited care for Carla Hernandez was likely a critical update on her medical condition, such as a diagnosis or symptom revelation. Unfortunately, without more context or specific details about Carla Hernandez’s case, it's not possible to determine exactly what this key piece of information was. In clinical practice, communication between health care professionals can significantly influence patient care, including details on severe symptoms, test results, or a change in patient status. These cues often lead to prompt and appropriate medical responses.