A70-year-old man complains of a sudden onset of difficulty breathing. he has dried blood on his lips and is very anxious. his left leg is red, swollen, and painful. the emt should:

Left swollen leg indicating a thrombosis in leg. The patient might be having a pulmonary embolism. EMT should clear airway, breathing and circulation first. The patient should be given oxygen to reduce breathing difficulty. If patient is stable, try to rule out other diagnoses such as heart disease.