Certified Transport Registered Nurse Certification Practice Exam

What is the normal range for EtCO2 values?

1. 25-35 mmHg

2. 30-40 mmHg

3. 35-45 mmHg

4. 40-50 mmHg

The correct answer is: 35-45 mmHg

The normal range for End-Tidal Carbon Dioxide (EtCO2) values is 35-45 mmHg. This range is important in clinical practice as it reflects the carbon dioxide levels in the patient’s respiratory system, which can provide insights into their ventilatory status and metabolic function. Maintaining EtCO2 within this range is crucial for effective respiratory function; values below this range may indicate hyperventilation, while values above it may suggest hypoventilation or potential respiratory failure. Monitoring EtCO2 is essential during various clinical situations, particularly in critical care and transport settings, as it helps in assessing patient ventilation and identifying any respiratory compromise in real-time. The significance of this parameter lies in its role in guiding interventions that can stabilize a patient’s condition.