Künstliche Luft Zur Medizinischen Anwendung (Oxygen)

• Oxygen is used as a supplemental respiratory support agent to address conditions characterized by inadequate oxygenation.
• Hypoxemia: supplemental oxygen raises arterial oxygen tension, improving tissue oxygen delivery in patients with low blood oxygen levels.
• Respiratory distress: oxygen therapy supports breathing effort and prevents hypoxia during acute or chronic respiratory compromise.
• Carbon monoxide poisoning: high‑flow oxygen accelerates displacement of carbon monoxide from hemoglobin, reducing toxicity.
• Acute respiratory failure: oxygen delivery maintains adequate oxygen saturation while definitive treatment is administered.

• Oxygen acts by increasing the partial pressure of oxygen in the alveoli, which enhances diffusion into the pulmonary capillary blood. The elevated arterial oxygen tension raises the amount of dissolved oxygen in plasma, supplementing hemoglobin‑bound oxygen and thereby improving tissue oxygenation. This physiologic effect supports cellular metabolism in hypoxic conditions without directly interacting with specific receptors and helps maintain organ function.

Oxygen therapy may be associated with several adverse reactions, ranging from mild to serious.

Common Side Effects

• Dry mouth or nasal irritation: discomfort in the upper airway due to gas flow.
• Cough or mild throat irritation: irritation of respiratory mucosa.
• Headache or mild fatigue: transient symptoms related to changes in oxygen levels.

Serious or Rare Side Effects

• Fire hazard: high concentration of oxygen increases flammability of surrounding materials.
• Pulmonary oxygen toxicity: prolonged high‑flow exposure can cause lung inflammation and edema.
• Central nervous system toxicity: seizures or visual disturbances may occur with excessive oxygen, especially in neonates.

When using oxygen as a medical gas, several safety and clinical precautions should be observed.

• Assess patient oxygen saturation: confirm hypoxemia before initiating therapy.
• Target SpO₂ range: adjust flow to maintain recommended oxygen saturation levels.
• Monitor for hyperoxia: avoid excessive oxygen that may cause toxicity.
• Use caution in COPD patients: high concentrations can suppress respiratory drive.
• Avoid smoking or open flames: oxygen supports combustion and poses fire risk.
• Store at ambient temperature: keep cylinders upright, protect from heat, direct sunlight and physical damage.

Oxygen can interact with certain medications and environmental conditions, influencing safety and efficacy.

Major Interactions (Avoid)

• Paraquat: concurrent use markedly increases risk of severe pulmonary toxicity.
• Nitrites: may exacerbate methemoglobinemia, reducing oxygen delivery.
• Diving with high‑flow oxygen: raises risk of central nervous system oxygen toxicity.

Moderate Interactions (Monitor Closely)

• Bronchodilators: combined use may enhance respiratory effects, requiring dose adjustment.
• Sedatives or opioids: increased risk of respiratory depression when high oxygen levels are present.
• Bleomycin chemotherapy: supplemental oxygen may augment pulmonary toxicity risk.