False-Negative Appendicitis at Ultrasound: Nature and Association
| Autor: | Patwadee Piyarom, Rathachai Kaewlai |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Acoustics and Ultrasonics Perforation (oil well) Biophysics Appendix Sensitivity and Specificity Abdominal wall Humans Medicine Radiology Nuclear Medicine and imaging Diagnostic Errors False Negative Reactions Aged Retrospective Studies Ultrasonography Aged 80 and over Observer Variation Pain score Radiological and Ultrasound Technology business.industry Ultrasound Reproducibility of Results Middle Aged Appendicitis medicine.disease Surgery medicine.anatomical_structure Alvarado score Case-Control Studies Female Radiology business Body mass index |
| Zdroj: | Ultrasound in Medicine & Biology. 40:1483-1489 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/j.ultrasmedbio.2014.02.014 |
| Popis: | The objective was to describe nature and factors associated with false-negative ultrasound (US) for adult appendicitis. Patients with pathologically proven appendicitis and pre-operative US from January 2011 to May 2013 were included in this retrospective case-control study. They were divided into true-positive and false-negative groups, matched by age and gender. There were 112 patients (40 men, mean age = 40 y, 56 true positives) included. Two factors were found differ significantly: abdominal wall thickness and pain score. Greater abdominal wall thickness (18.6 mm vs. 14.9 mm, p = 0.001) and lower pain score (6.6 vs. 7.5, p = 0.018) were statistically associated with false negativity. The two groups did not differ significantly in terms of weight, height, body mass index, symptom duration, Alvarado score, US examination time, appendix position/size, perforation rate and operator. In conclusion, lower pain score and increased abdominal wall thickness are associated with false negativity in US examinations. |
| Databáze: | OpenAIRE |
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