Interpretations
All PUL prediction protocols are not diagnostic and may misclassify
patients. They can guide clinicians
to increase the follow-up frequency of high-risk patients, but should
not be used to choose interventions. Unnecessary intervention may result
in harm to an intrauterine pregnancy. In addition, the prediction
accuracy of some protocols are unstable in different
regions.7 Based on this, it is suggested that
clinicians be cautious about the prediction results of any protocol, and
comprehensively evaluate the patients in combination with clinical
manifestations (such as abdominal pain or signs and symptoms of
hemodynamic compromise).5