Final answer:
Long-term oxygen therapy benefits patients by improving nocturnal saturation and decreasing pulmonary artery pressures, which help maintain steadier oxygen levels and reduce cardiac strain.
Step-by-step explanation:
Two documented benefits of long-term oxygen therapy (LTOT) are improved nocturnal saturation and decreased pulmonary artery pressures. Improved nocturnal saturation ensures that blood oxygen levels remain steadier throughout the night, which is crucial for patients with chronic respiratory conditions. Decreased pulmonary artery pressures can reduce the workload on the heart since lower blood pressure in the lungs puts less strain on the right ventricle, potentially preventing or ameliorating the effects of pulmonary hypertension that often accompany chronic lung diseases. While not directly mentioned as one of the formal options, it is important to note that LTOT may also lead to reduced pulmonary vascular resistance, which can further alleviate cardiac strain.
Two of the documented benefits of long-term oxygen therapy are improved nocturnal saturation and reduced pulmonary vascular resistance. In long-term oxygen therapy, patients with chronic lung diseases receive supplemental oxygen to improve oxygen levels in their blood. Improved nocturnal saturation refers to an increase in oxygen levels during sleep, which can help patients with breathing difficulties. Reduced pulmonary vascular resistance means that there is less pressure on the blood vessels in the lungs, making it easier for oxygen to reach the tissues.