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Published on: November 6, 2019
[Preoperative coagulation screening prior to adenoidectomy and tonsillectomy]
W Eberl1, I Wendt, H-G Schroeder
1Klinik für Kinder- und Jugendmedizin, Klinikum Braunschweig gGmbH. w.eberl@klinikum-braunschweig.de
Insights
Preoperative laboratory tests are ineffective for predicting bleeding in pediatric surgery patients. A detailed bleeding history is a more reliable method for identifying children at risk of postoperative bleeding complications.
Area of Science:
- Pediatric Surgery
- Hematology
- Clinical Diagnostics
Background:
- Routine laboratory coagulation tests are standard for screening pediatric surgical patients.
- The predictive accuracy of common coagulation tests (thromboplastin time, partial thromboplastin time, thrombocyte count) versus bleeding history is under investigation.
Purpose of the Study:
- To evaluate the effectiveness of preoperative coagulation screening in predicting postoperative bleeding in children undergoing adenoidectomy and tonsillectomy.
- To compare the predictive value of laboratory tests with a standardized bleeding history.
Main Methods:
- A cohort of 702 pediatric patients undergoing 500 adenoidectomies and 500 tonsillectomies were analyzed.
- Results from laboratory coagulation tests and individual bleeding histories were collected and evaluated.
Main Results:
- Abnormal results were found in 9.4% of laboratory tests.
- A suspicious bleeding history was reported in 30.5% of children for adenoidectomy and 22% for tonsillectomy.
- Post-tonsillectomy bleeding occurred in 5.4% of patients; history alone predicted 9.2% of bleeding events, while coagulation screening predicted only 6.8%.
Conclusions:
- Preoperative laboratory coagulation tests have limited value in predicting postoperative bleeding complications in children.
- A comprehensive bleeding history is more effective in identifying at-risk patients.
- Targeted laboratory testing based on patient history, alongside counseling and postoperative monitoring, can improve patient safety.
Background:
Laboratory tests are widely used to screen children with planned surgery to detect unknown coagulation defects. This study investigates the predictive value of commonly used coagulation tests (thromboplastin time, partial thromboplastin time and thrombocyte count) compared with a standardized bleeding history.
Patients:
In 702 patients 500 adenoidectomies and 500 tonsillectomies were done, results of laboratory evaluation and individual bleeding history were evaluated.
Results:
9.4 % of all laboratory tests showed abnormal results. 30.5 % of the children awaiting adenoidectomy had a suspicious bleeding history as had 22 % of patients undergoing tonsillectomy. In the clinical course of adenoidectomy no bleeding occurred. After tonsillectomy 15 children (3 %) showed moderate, 12 patients (2.4 %) severe postoperative bleeding. The positive predictive value of coagulation screening reached 6.8 % whereas history alone predicted 9.2 % of observed post tonsillectomy bleeding.
Conclusions:
The results of this study demonstrate the lacking effect of laboratory tests to predict postoperative bleeding complications. Taking a careful history of bleeding risks and testing only patients with suspicious history reduces the risk of bleeding more effective. Counseling about bleeding symptoms and postoperative survey of patients are additional measures which may protect the children.
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