Journals / Anatolian Journal of Emergency Medicine / 2025 / Cilt: 8 Sayı: 4

The Role of the Speed Bump Sign Model for Diagnosing Acute Perforated Appendicitis in the Emergency Department

Acil Serviste Akut Perfore Apandisit Tanısında Hız Kasis Bulgusu Modelinin Rolü

Mehmet Yorgun(UNIVERSITY OF HEALTH SCIENCE, VAN TRAINING AND RESEARCH HOSPITAL, EMERGENCY DEPARTMENT)0000-0003-1129-3702
Murat Yücel(Samsun University, Faculty of Medicine, Department of Emergency Medicine, Samsun, Turkey)0000-0003-0220-9230
Murat Güzel(Samsun University, Faculty of Medicine, Department of Emergency Medicine, Samsun, Turkey)0000-0003-0276-4576
Emre Özgen(Merzifon State Hospital Emergency Medicine, Amasya, Turkey)0000-0001-8153-4132
Metin Yadigaroğlu(Aydın Adnan Menderes University, Faculty of Medicine Department of Emergency Medicine, Aydın, Turkey)0000-0003-1771-5523
Sener Cindoruk(Samsun University, Faculty of Medicine, Department of Emergency Medicine, Samsun, Turkey)0000-0001-9177-587X
Hatice Turan(Konya Kulu State Hospital, Emergency Medicine, Konya, Turkey)0000-0002-2047-7522
Pages
158–164
Publication Date
2025-12-30
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: The SBS and SBS-m exhibit high sensitivity in diagnosing PA with minimal false negatives, suggesting their potential as valuable tools for PA exclusion.

📌 3 Key Takeaways

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Objective & Hypothesis:ABSTRACT Aim: Diagnostic strategies for acute appendicitis (AA), including physical examination, imaging, and laboratory analyses, remain challenging due to variable presentations.
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Key Findings & Data:Our study aimed to validate SBS and introduced an emergency department (ED)-based speed bump model (SBS-m) for diagnosing perforated appendicitis (PA).
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Conclusion & Impact:Conclusion: The SBS and SBS-m exhibit high sensitivity in diagnosing PA with minimal false negatives, suggesting their potential as valuable tools for PA exclusion.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Akut apandisit · perfore apandisit · hız kasisi bulgusu

Abstract

ABSTRACT Aim: Diagnostic strategies for acute appendicitis (AA), including physical examination, imaging, and laboratory analyses, remain challenging due to variable presentations. The speed bump sign (SBS), evaluating pain during transit, has been explored as a diagnostic indicator. Our study aimed to validate SBS and introduced an emergency department (ED)-based speed bump model (SBS-m) for diagnosing perforated appendicitis (PA). Material and Methods: Adult patients presenting with suspected acute appendicitis (AA) were enrolled. A speed bump model assessed the SBS-m. Positive SBS responses indicated heightened pain upon the rear wheelchair wheel's speed bump contact, while negative responses indicated no pain change. SBS and SBS-m were subsequently compared. Results: AA was diagnosed in 100 (82%) of 122 suspected cases. For diagnosing AA, SBS showed 81.4% sensitivity (95% CI: 72.3 - 88.6), while SBS-m had 82% sensitivity (95% CI: 73.1 - 88.9). Both tests displayed 100% sensitivity and NPV (95% CI: 76.8 - 100) in distinguishing PA from non-perforated AA. Conclusion: The SBS and SBS-m exhibit high sensitivity in diagnosing PA with minimal false negatives, suggesting their potential as valuable tools for PA exclusion.

Özet

Amaç: Fizik muayene, görüntüleme ve laboratuvar analizleri dahil olmak üzere akut apandisit (AA) tanısına yönelik stratejiler, değişken klinik bulgular nedeniyle güçlükler içermektedir. Transit sırasında ağrı artışını değerlendiren “hız kasisi bulgusu” (Speed Bump Sign, SBS) tanısal bir gösterge olarak araştırılmıştır. Bu çalışmanın amacı, SBS’nin geçerliliğini değerlendirmek ve perfore apandisit (PA) tanısında kullanılmak üzere acil servis (AS) temelli bir hız kasisi modeli (SBS-m) geliştirmektir. Gereç ve Yöntemler: Akut apandisit (AA) ön tanısı ile acil servise başvuran erişkin hastalar çalışmaya dâhil edildi. SBS-m değerlendirmesi, modifiye edilmiş fiziksel bir hız kasisi modeli kullanılarak gerçekleştirildi. Tekerlekli sandalyenin arka tekerleği hız kasisinden geçerken karın ağrısında artış olması pozitif SBS yanıtı, ağrıda değişiklik olmaması ise negatif yanıt olarak kabul edildi. SBS (anamneze dayalı) ve SBS-m (model temelli) testleri tanısal performans açısından karşılaştırıldı. Bulgular: Toplam 122 şüpheli olgunun 100’ünde (%82) AA tanısı doğrulandı. AA tanısında SBS’nin duyarlılığı %81,4 (GA %95: 72,3–88,6), SBS-m’nin duyarlılığı ise %82 (GA %95: 73,1–88,9) olarak bulundu. Her iki test de PA’yı perforasyonsuz AA’dan ayırt etmede %100 duyarlılık ve negatif prediktif değer (GA %95: 76,8–100) gösterdi. Sonuç: SBS ve SBS-m, PA tanısında yüksek duyarlılık ve minimum yanlış negatif sonuç göstererek PA'nın dışlanmasında değerli araç olarak potansiyelini ortaya koymuştur.

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Cite This Article

Yorgun, M., Yücel, M., Güzel, M., Özgen, E., Yadigaroğlu, M., Cindoruk, S., Turan, H. (2025). The Role of the Speed Bump Sign Model for Diagnosing Acute Perforated Appendicitis in the Emergency Department. Anatolian Journal of Emergency Medicine, Cilt: 8 Sayı: 4, 158–164. https://doi.org/10.54996/anatolianjem.1703603

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