Right ventricular outflow tract doppler flow abnormalities suggestive of pulmonary embolism – case series and review

RVOT Doppler flow pattern of ESN has potential clinical utility for the detection of PE in ED patients. ESN could identify patients at higher risk, which are otherwise stratified as low risk according to the latest guidelines. Moreover, this case series illustrates that even in the absence of other echocardiographic findings of RV strain, the presence of ESN should alert to the possibility of acute PE. Further prospective studies are needed to assess its diagnostic value in a selected subgroup of patients, similar to the cases presented, that would have no other obvious reason for the altered RVOT Doppler curve.