An intubated 18 year old male is in respiratory arrest. At what range should you maintain his EtCO2?

Maintaining the end-tidal carbon dioxide (EtCO2) level in the range of 35-45 mmHg is crucial for an intubated patient in respiratory arrest. This range is considered the normal physiological level for EtCO2, indicating adequate ventilation and perfusion. An EtCO2 level within this range suggests that carbon dioxide is being effectively expelled from the body, which is vital for maintaining acid-base balance and preventing respiratory acidosis or alkalosis.

In a scenario of respiratory arrest, it is important to assess the effectiveness of ventilation. If the EtCO2 is too low (indicating hyperventilation or ineffective ventilation), it can lead to a decrease in available carbon dioxide, impairing the patient’s ability to maintain homeostasis. Conversely, an excessively high EtCO2 level can indicate hypoventilation, signaling the need for improved ventilation to prevent complications from increased levels of carbon dioxide.

Therefore, the target range of 35-45 mmHg ensures that you are providing adequate assistance to the patient's respiration, allowing you to monitor their condition effectively as treatment progresses.