Oxygen Therapy: A Dual Tool for Medical Treatment and Healthcare

Hospital-based oxygen administration is a common clinical practice primarily aimed at relieving hypoxia. Proper oxygen delivery helps correct oxygen deprivation, elevates arterial partial pressure and saturation levels, and enhances metabolic function—serving as an essential adjunct treatment for various conditions. Home oxygen therapy is particularly recommended for patients with chronic obstructive pulmonary emphysema to improve their quality of life. For long-term use, flow rates should be maintained between 2–4 liters per minute, with sessions not exceeding one hour daily to minimize health risks associated with excessive oxygen free radical production.

Key benefits include delaying aging processes in organs and tissues. As individuals age, metabolic efficiency in vital organs like the heart and lungs naturally declines. Supplemental oxygen boosts blood oxygen levels, strengthens immunity, prevents chronic diseases, relieves fatigue, and improves sleep quality. During periods of extreme exhaustion or emotional stress—when the brain experiences physiological hypoxia—oxygen therapy can alleviate symptoms such as dizziness, weakness, and appetite loss while enhancing cognitive performance and work efficiency. However, treatment duration must strictly adhere to the one-hour limit to avoid oxidative stress from prolonged exposure.

Regular or acute oxygen administration during illness can prevent/mitigate angina attacks and myocardial infarction, buying critical time for intervention. It also reduces mortality risk in sudden coronary death (SCD), whose abrupt onset often follows prodromal signs like persistent mild chest tightness, dyspnea, mood disturbances, or irregular heartbeats. Early supplemental oxygen during these phases significantly improves outcomes. Additionally, oxygen therapy effectively manages asthma by increasing alveolar oxygen concentration, thereby alleviating bronchospasms.

This modality treats hypoxemia by improving arterial oxygenation and supporting cellular metabolism across diverse pathologies—including respiratory failure, chronic bronchitis, cerebrovascular disorders, and coronary artery disease. Even patients without overt clinical signs may suffer from occult hypoxia (oxygen debt) or impaired microcirculatory metabolism necessitating supplementation. Typical cases involve perioperative care (pre/post-surgery), hemorrhagic shock management, fetal distress indicated by abnormal heart rate patterns, or prolonged labor induction.

Common Delivery Methods:

1Nasal Prongs/Cannula: Disposable prongs fit snugly within each nostril; alternatively, a thin plastic tube (cannula) extends into the nasopharyngeal space.

2 Face Mask: Covers both mouth and nose for higher FiO₂ delivery though requires monitoring for hypercapnia (CO₂ retention).

3 Oral Cannula: Reserved for patients with nasal obstruction or mouth-breathing preference—uses larger bore tubing inserted into the oral cavity.