Fever, purulent tracheobronchial secretions, leukocytosis, increased respiratory rate, decreased tidal volume, increased minute ventilation, and decreased oxygenation.
Fever, leukocytosis, decreased tidal volume, decreased oxygenation, and increased blood pressure.
Decreased oxygen, increased minute ventilation, increased tracheobronchial secretions, and decreased respiratory rate.
Fever, increased tracheobronchial secretions, increased respiratory rate, and increased tidal volume.
Preexisting conditions, such as immunosuppression, chronic obstructive lung disease, and acute respiratory distress syndrome
Patients’ body positioning
Level of consciousness
Medications, including sedative agents and antibiotics