Oxygen

Definition

Oxygen is a vital gas that supports cellular respiration and energy production in tissues. In medical emergencies, it is administered to improve tissue oxygenation and support critical bodily functions.

5 Must Know Facts For Your Next Test

1. Oxygen therapy is crucial in treating hypoxemia, where there is an abnormally low level of oxygen in the blood.
2. In cardiac emergencies, supplemental oxygen can help reduce myocardial ischemia by increasing oxygen delivery to the heart muscle.
3. High concentrations of oxygen may be necessary during resuscitation efforts for patients experiencing cardiac arrest or shock.
4. Oxygen must be administered carefully as excessive amounts can lead to oxygen toxicity, particularly in patients with chronic obstructive pulmonary disease (COPD).
5. Monitoring blood oxygen levels using pulse oximetry or arterial blood gases is essential to ensure appropriate oxygen therapy.

Review Questions

• Why is supplemental oxygen important during a cardiac emergency?
• What are the risks associated with high concentrations of oxygen therapy?
• How do healthcare providers monitor the effectiveness of oxygen therapy?

Related terms

Hypoxemia: A condition characterized by low levels of oxygen in the blood.

Myocardial Ischemia: Reduced blood flow to the heart muscle, leading to inadequate oxygen supply.

Pulse Oximetry: A non-invasive method for measuring the saturation of oxygen in a patient's blood.