A 45-year-old male patient with a history of pneumonia is transported by air to a tertiary care center. During transport, he develops severe shortness of breath, hypoxemia, and bilateral infiltrates on chest X-ray without signs of heart failure. What should be the immediate priority in managing this patient?
Administer high-flow oxygen or apply positive pressure ventilation
Administer bronchodilators for airway management
Administer diuretics to manage potential fluid overload
Administer antibiotics for the underlying infection