I read with interest the article by Jensen et al1 regarding the use of a Doppler endoscopic probe (DEP) in hemostasis of nonvariceal gastrointestinal bleeding. The authors demonstrated that use of a DEP can significantly reduce the rebleeding rate of nonvariceal upper gastrointestinal bleeding from 26.3% in the control group to 11.1% in the DEP group. Although innovative and interesting, a few points need further clarification.