Subjects and Methods
One hundred consecutive patients with suspected PE at the George Washington University Medical Center were evaluated. A single urine sample was obtained in all instances just before the V/Q scans. All the subjects were interviewed and V/Q scans were performed. Subsequent diagnostic procedures were carried out according to the decisions of the primary care physicians. Only the patients who had the diagnosis of PE reliably established or excluded were entered into the final study cohort. All diagnostic tests and patient treatments were carried out without the knowledge of uFPA results. ventolin 100 mcg
A diagnosis of PE was based on one of the following criteria: (1) one or more intraluminal filling defects on PA; and (2) a “high probability of PE” V/Q scan int erpretation (as defined below) and more than 80 percent resolution of all perfusion defects at the completion of anticoagulation treatment. PE was excluded by one of the following criteria: (1) PA that demonstrated neither an intraluminal filling defect nor abrupt amputation of lobar or segmental artery; and (2) a normal perfusion lung scan.