DIAGNOSTIC UTILITY OF PLATELET INDICES IN PREDICTING SEVERITY OF ACUTE APPENDICITIS: A COMPARATIVE STUDY
Main Article Content
Keywords
Acute appendicitis, Mean Platelet Volume, Platelet Distribution Width, Platelet count, Complicated appendicitis, Biomarkers.
Abstract
Acute appendicitis remains one of the most common surgical emergencies, and differentiating uncomplicated from complicated forms is essential to minimize morbidity. Conventional inflammatory markers lack specificity, prompting interest in low-cost hematological parameters such as platelet indices.
Objective: To evaluate the diagnostic role of platelet count and platelet indices—Mean Platelet Volume (MPV) and Platelet Distribution Width (PDW)—in differentiating uncomplicated and complicated acute appendicitis.
Methods: This comparative observational study included 80 patients aged 15–65 years presenting with clinical features of acute appendicitis. Patients were classified into uncomplicated or complicated appendicitis based on intraoperative and histopathological findings. Preoperative platelet count, MPV, and PDW were measured. Statistical analysis included Student’s t-test, Chi-square test, and ROC curve assessment, with p < 0.05 considered significant.
Results: Complicated appendicitis cases demonstrated significantly higher platelet counts and PDW values, and significantly lower MPV values compared with uncomplicated cases (p < 0.001). ROC analysis showed PDW (AUC 0.83) had the highest diagnostic accuracy, followed by MPV (AUC 0.81). Platelet count also correlated with complication severity.
Conclusion: Platelet indices, particularly PDW and MPV, serve as reliable, inexpensive biomarkers for predicting complicated appendicitis and can be used as adjunctive tools in early clinical decision-making.
References
2. Smink DS, Soybel DI. Appendix and Appendectomy. In: Zinner MJ, Stanely W, editors. Maingot’s Abdominal Operations. 11th ed. McGraw Hill; 2007. p.589-612.
3. Maa J. The Appendix. In: Townsend CM, Beauchamp RD, Evers BM, Mattox KL, editors. Sabiston Textbook of Surgery. 18th ed. Philadelphia: Saunders Elsevier; 2008. p.1333-47.
4. Von Titte SN, McCabe CJ, Ottinger LW. Delayed appendicectomy for appendicitis: causes and consequences. Am J Emerg Med. 1996;14:620.
5. Temple CL, Huchcroft SA, Temple WJS. Natural history of appendicitis in adults: A prospective study. Ann Surg. 1995;221:78.
6. Prina E, Ferrer M, Ranzani OT, et al. Thrombocytosis in pneumonia. Chest. 2013;143:767-75.
7. Gofrit O, Shapiro A, Rund D, et al. Thrombocytosis in urinary tract infection. Am J Emerg Med. 2006;24:118-21.
8. Thachil J. Platelets in inflammatory disorders: clinical perspective. Semin Thromb Hemost. 2015;41:572-81.
9. Aydogan A, Akkucuk S, Arica S, et al. MPV and PDW in appendicitis. Indian J Surg. 2015;77:495-500.
10. Takeyama H, Mizushima T, Iijima H, et al. Platelet activation in Crohn’s disease. Dig Dis Sci. 2015;60:3418-23.
11. Käser SA, Furler R, Evequoz DC, Maurer CA. Hyponatremia as marker of perforation. Gastroenterol Res Pract. 2013;2013:46289.
12. Kim DY, Nassiri N, de Virgilio C, et al. Hyponatremia and complicated appendicitis. JAMA Surg. 2015;150:911-2.
13. Fan Z, Zhang Y, Pan J, Wang S. MPV in acute appendicitis: meta-analysis. Ann Clin Lab Sci. 2017;47:768-72.
14. Leung AA, McAlister FA, Rogers SO, et al. Preoperative hyponatremia. Arch Intern Med. 2012;172:1474-81.
15. Park SJ, Shin JI. Inflammation and hyponatremia. Korean J Pediatr. 2013;56:519-22.
16. Swart RM, Hoorn EJ, Betjes MG, Zietse R. IL-6 in osmoregulation. Nephron Physiol. 2011;118:45-51.
17. Albayrak Y, Albayrak A, et al. MPV as predictor in appendicitis. Clin Appl Thromb Hemost. 2011;17:362-6.
18. Boshnak N, Boshnaq M, Elgohary H. Platelet indices in acute appendicitis. J Investig Surg. 2018;31:121-9.

