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The diagnostic potential of some routine laboratory tests. off
E Bjørnestad1, R T Lie, C W Janssen
1Department of Anaesthesiology, Haukeland University Hospital, Bergen, Norway.
The British Journal of Clinical Practice
|September 1, 1993
Summary
White blood cell count (WBC) can help differentiate acute mesenteric ischemia (AMI) from other abdominal conditions. Elevated WBC levels were a key indicator in patients with AMI, aiding in diagnosis.
Area of Science:
- Gastroenterology
- Surgical Pathology
- Diagnostic Medicine
Background:
- Differentiating acute mesenteric ischemia (AMI) from other acute abdominal pathologies is critical for timely intervention.
- Biomarkers such as white blood cell count (WBC), hemoglobin (Hb), and erythrocyte volume fraction (EVF) are routinely measured in patients with abdominal emergencies.
- The diagnostic utility of these common hematological parameters in distinguishing AMI remains to be fully elucidated.
Purpose of the Study:
- To evaluate the potential of WBC, Hb, and EVF in differentiating patients with AMI from those with colon perforation, peptic ulcer perforation, and intestinal obstruction.
- To establish optimal cut-off values for these hematological parameters using receiver operator characteristic (ROC) curves for improved diagnostic accuracy.
Main Methods:
- Retrospective analysis of hematological parameters (WBC, Hb, EVF) in patients diagnosed with AMI, colon perforation, peptic ulcer perforation, and intestinal obstruction.
- Comparison of parameter values between patient groups and healthy individuals.
- Construction of ROC curves to determine sensitivity and specificity for differentiating AMI from non-AMI conditions.
- Application of discriminant analysis for classifying patients into AMI and non-AMI groups.
Main Results:
- White blood cell count (WBC) was significantly elevated in patients with AMI (18.95 +/- 6.88 10(3) ml-1) compared to the normal range (P < 0.0001).
- While other parameters did not significantly differ from healthy individuals in specific patient groups, all tested variables showed significant differences between AMI and non-AMI patients (P < 0.001).
- ROC curve analysis yielded sensitivities and specificities ranging from 62% to 75% for the evaluated variables.
- Discriminant analysis achieved an 80% accuracy in correctly classifying patients into AMI and non-AMI groups.
Conclusions:
- White blood cell count (WBC) serves as a valuable biomarker for differentiating acute mesenteric ischemia (AMI) from other acute abdominal emergencies.
- Hematological parameters, particularly WBC, demonstrate significant potential in the diagnostic workup of suspected AMI.
- Further research may refine the use of these parameters in conjunction with clinical findings for earlier and more accurate AMI diagnosis.