PSP (Pancreatic Stone Protein) is a compound naturally produced mainly in the pancreas and the gut. There is evidence from experimental and clinical trials that the levels of PSP in the blood rise in the presence of inflammation or infection. What is not yet well known about PSP is whether it is superior to other established blood tests (e.g. WBC or CRP) in predicting appendicitis in patients that present at the emergency room with abdominal pain and a clinical suspicion of appendicitis.
Interim analysis will be performed once 123 patients are recruited. A power analysis will be performed and the sample size re-calculated based on the actual and precise data collected. At interim analysis, the external data monitoring committee will decide upon the continuation or discontinuation of the trial, as well the potential need to modify the sample size. If any changes are suggested by the external data monitoring committee, the principal investigators will decide on the feasibility of the potential changes and submit a formal addendum to the ethics committee. No changes will be made to the protocol or study design unless first approved by the ethics committee. Any changes to the protocol approved by the ethics committee will be updated at clinicaltrials.gov
Study Type
OBSERVATIONAL
Enrollment
245
Also known as appendectomy, surgical removal of the appendix. Laparoscopic (single or 4 port), McBurney's incision, mid-line laparotomy, laparoscopic converted to open.
University Hospital Zurich
Zurich, Canton of Zurich, Switzerland
RECRUITINGUniversity Hospital Zurich, Department of Surgery
Zurich, Switzerland
NOT_YET_RECRUITINGAccuracy of PSP in diagnosing appendicitis
ROC Curve analysis and predictive value of PSP (Pancreatic Stone Protein) in diagnosing appendicitis
Time frame: 1 day
Accuracy of CRP in diagnosing appendicitis
ROC Curve analysis and predictive value of CRP (C-Reactive Protein) in diagnosing appendicitis
Time frame: 1 day
Accuracy of WCC in diagnosing appendicitis
ROC Curve analysis and predictive value of WCC (White Cell Count) in diagnosing appendicitis
Time frame: 1 day
Accuracy of the "Alvarado Score" in diagnosis appendicitis
ROC Curve analysis and predictive value of Alvarado Score in diagnosing appendicitis
Time frame: 1 day
Accuracy of USS in diagnosing appendicitis
ROC Curve analysis and predictive value of Ultrasound Scanning (USS) in diagnosing appendicitis, most commonly performed in young females
Time frame: 1 day
Accuracy of CT in diagnosing appendicitis
ROC Curve analysis and predictive value of CT (Computer Tomography) in diagnosing appendicitis, most commonly performed in the elderly
Time frame: 1 day
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