Elevated C-reactive protein level predicts lower gastrointestinal tract bleeding

Area of Science:

• Gastroenterology
• Oncology
• Clinical Medicine

Background:

• Lower gastrointestinal (GI) bleeding is a common clinical presentation.
• Colorectal polyps and cancer are known causes of lower GI bleeding.
• Predictive markers for lower GI bleeding are crucial for timely diagnosis and intervention.

Purpose of the Study:

• To identify blood test variables and medications that can predict lower GI bleeding.
• To facilitate appropriate and timely colonoscopy referrals.
• To understand the association between specific diagnoses and lower GI bleeding.

Main Methods:

• Retrospective analysis of medical records of patients who underwent colonoscopy.
• Comparison of diagnoses, medications, and blood test variables between patients with and without bleeding.
• Logistic regression analysis to determine factors associated with lower GI bleeding.

Main Results:

• Colorectal polyps and cancer were significantly associated with lower GI bleeding (OR=6.71).
• Elevated C-reactive protein (CRP) levels were significantly higher in patients with lower GI bleeding.
• No association was found between lower GI bleeding and the use of non-steroidal anti-inflammatory drugs (NSAIDs), corticosteroids, or anticoagulants.
• Hemoglobin (Hb) levels were lower in patients with bleeding, but this was not statistically significant.

Conclusions:

• Colorectal polyps and cancer are strong predictors of lower GI bleeding.
• Elevated CRP is a potential indicator for lower GI bleeding.
• No tested medication was found to be associated with a lower risk of GI bleeding in this cohort.