METHODS: This study was conducted over a 12-month period in Baguio General Hospital and Medical Center. Enrolled were 20 patients who presented with abdominal pain at the right lower quadrant area. Graded compression sonography over the right lower quadrant was employed in the examination using Aloka SSD 1700 ultrasound machine with a 5 - 7.5 MHz linear probe. Exploratory laparotomy confirmed presence of appendicitis where appendectomy was subsequently done. The rest of the patients were admitted for observation and some were discharged. The sensitivity and specificity were determined including the positive predictive value, negative predictive value, and overall accuracy.
RESULTS: The sensitivity, specificity, positive predictive value, negative predictive value, and overall accuracy of ultrasound in the diagnosis of acute appendicitis were 85.71%, 100%, 100%, 92.85%, and 95% respectively.
CONCLUSION: Ultrasound is a highly specific and sensitive modality in the diagnosis of acute appendicitis with positive and negative predictive values & overall accuracy comparable with existing data. It is fast, safe, readily available and affordable by most patients. It is an accurate alternative/adjunct to other modalities like CT scan which is not readily available in our current setting.
General Objective: The objective of this study is to determine the specificity and sensitivity of graded compression sonography in the diagnosis of appendicitis.
1. To generate date regarding the specificity and sensitivity of graded compression sonography in the diagnosis of acute appendicitis
2. To provide an adjunct or alternative diagnostic modality in the diagnosis of acute appendicitis aside from relying on physical examination and CT scan
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