Acute gastrointestinal hemorrhage的用法和样例：
- The application of the ratio of serum urea ni-trogen to creatinine(BUN/Cr)in identifying thesource of acute gastrointestinal hemorrhage wasreviewed in 194 cases.
- Clinical observation of acute cerebral stroke complicated by upper gastrointestinal hemorrhage.
- Methods Fifty patients with acute gastrointestinal tract hemorrhage were performed with digital cineangiography and observed dynamically during art erial, capillary and venous phases.
- Methods: The clinical data of 102 cases with gastrointestinal hemorrhage in neonate were analyzed retrospectively.