A 40-year-old woman admitted with fever, chills, and changing mental status is transferred to the ICU with a clinical suspicion of sepsis. Examination shows sinus tachycardia, no murmur, and clear lung fields. The patient is given IV fluids aggressively for hydration. Blood cultures are drawn and the patient is placed on antibiotics. Subcutaneous heparin is given for thromboembolic prophylaxis. As the patient does not improve satisfactorily, a procedure is performed. One hour after this procedure, the patient suddenly develops moderate hemoptysis. A CXR is done.The next step should be