Shock index for patients with acute gastrointestinal bleeding in different age groups
Abstract：Objective By analyzing changes of shock index ( SI ) for acute gastrointestinal bleeding in different age groups, to explore the clinical significance of SI for acute gastrointestinal bleeding, and find the best cutoff point of SI in different age groups.Methods From April 2013 to April 2014, we enrolled 200 patients with suspected acute gastrointestinal bleeding, and collected vital signs, age and gender of the patients at admission.SI is the mathematical relationship of the heart rate divided by the systolic blood pressure; the SI formula was applied to their initial hospital vital signs. Patients were further subdivided by age.SI difference analysis was performed in different age groups. Results We collected 200 patients of suspected acute upper gastrointestinal bleeding ( 80 patients in non-elderly group, 120 patients in elderly group ) , included 46 patients with acute gastrointestinal bleeding (17 patients in non-elderly group, 29 patients in elderly group).Across our dataset, using the standard SI cutoff of >0.90 as the threshold for bleeding, the sensitivity is 65.2%, the specificity is 87.7%, with a Youden's index of 52.9%.Lowering the SI to≥0.80 in elderly group increases the sensitivity to 79.3%, the specificity is 90.1%, with a Youden's index of 69.4%.Conclusion SI, at a lowered threshold of≥0.80, can be used to identify older patients with acute gastrointestinal bleeding that will require intervention for hemostasis.
Keywords：Acute gastrointestinal bleedingShock index ( SI)Older patients
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1009-1012 )