Which of the following is a method to maintain adequate oxygen levels in pulmonary embolism treatment?

Maintaining adequate oxygen levels in patients experiencing pulmonary embolism is crucial since the condition can lead to impaired gas exchange and decreased oxygenation. Administering supplemental oxygen is a key intervention aimed at achieving this goal. The specific target of maintaining a partial pressure of oxygen (PaO2) greater than 80 mmHg ensures that the patient's oxygenation remains within acceptable limits, which is vital for cellular metabolism and overall organ function.

Supplemental oxygen can be delivered in various forms, such as nasal cannula or face mask, depending on the severity of the embolism and the patient's overall respiratory status. Ensuring adequate oxygenation not only improves patient comfort but also reduces the risk of hypoxia-related complications.

Other methods, while supportive and necessary for overall management of pulmonary embolism, do not address the immediate need for oxygenation as effectively. For instance, intravenous fluids can be helpful in managing hemodynamics but do not directly improve oxygen levels, oral medications may assist in treatment but are not immediate solutions for oxygenation, and chest physiotherapy primarily focuses on improving airway clearance and lung function rather than directly influencing oxygen saturation in acute scenarios. Thus, focusing on maintaining appropriate oxygen levels is the most immediate and critical method in this context.