E-FAST AS A PRIMARY SURVEY ADJUNCT IN TRAUMA PATIENTS: A CROSS-SECTIONAL STUDY

Authors

  • Muhammad Ashfaq Combined Military Hospital Rawalpindi, Pakistan. Author
  • Tamkeen Pervez MBBS (Pak), MCEM (UK), EMDM (Italy), FRCEM (UK), ICMT (UK), CHPE (Pak), Pakistan. Author
  • Amer Iqbal Combined Military Hospital Rawalpindi, Pakistan. Author
  • Anees Ur Rehman Combined Military Hospital Rawalpindi, Pakistan. Author
  • Riaz Ahmad Combined Military Hospital Rawalpindi, Pakistan. Author
  • Maham Ali Combined Military Hospital Rawalpindi, Pakistan. Author

DOI:

https://doi.org/10.71000/8mxnjc66

Keywords:

Abdomen, Emergency Medicine, Hemoperitoneum, Pneumothorax, Point-of-Care Ultrasound, , Thoracic Injuries, Trauma

Abstract

Background: Trauma remains a leading cause of morbidity and mortality worldwide, necessitating rapid and accurate diagnostic tools during the initial assessment. Conventional imaging methods such as chest and pelvic radiographs are time-consuming and resource-dependent. The extended Focused Assessment with Sonography for Trauma (e-FAST) integrates abdominal, thoracic, and pericardial views, enabling early detection of life-threatening injuries like pneumothorax, haemothorax, and hemoperitoneum. Its role as a primary survey adjunct, however, remains under evaluation.

Objective: To determine the diagnostic accuracy and clinical utility of e-FAST as a primary adjunct in the initial trauma survey and its influence on emergency management decisions.

Methods: A prospective, cross-sectional study was conducted over 12 months (May 2024–May 2025) in the Emergency Department of a tertiary care teaching hospital. One hundred adult trauma patients were enrolled using convenience sampling. Each underwent a real-time e-FAST examination performed by trained emergency physicians during the primary survey. Findings were compared with computed tomography (CT) or intraoperative results as reference standards. Diagnostic performance indices, including sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV), were calculated using IBM SPSS Statistics version 26.0. Associations were assessed using the Chi-square test with p < 0.05 considered significant.

Results: The mean age was 42.5 ± 16.8 years, with males comprising 75%. Road traffic accidents accounted for 60% of injuries. e-FAST demonstrated sensitivity and specificity of 94.4% and 98.8% for hemoperitoneum, 86.7% and 100% for hemothorax, and 91.7% and 99.9% for pneumothorax, respectively. The median scan time was 6 minutes (IQR: 4–8). In 15% of patients, e-FAST findings led to immediate surgical or procedural intervention (p < 0.001).

Conclusion: e-FAST is a highly accurate, rapid, and non-invasive diagnostic modality for the early identification of thoraco-abdominal injuries in trauma patients. It surpasses conventional radiographs in diagnostic efficiency and significantly influences critical management decisions. Routine integration of e-FAST into the primary trauma survey can optimize resuscitation workflows and improve patient outcomes.

Author Biographies

  • Muhammad Ashfaq, Combined Military Hospital Rawalpindi, Pakistan.

    MBBS, Trainee FCPS Emergency Medicine, Combined Military Hospital Rawalpindi, Pakistan.

  • Tamkeen Pervez, MBBS (Pak), MCEM (UK), EMDM (Italy), FRCEM (UK), ICMT (UK), CHPE (Pak), Pakistan.

    Consultant Emergency Medicine, MBBS (Pak), MCEM (UK), EMDM (Italy), FRCEM (UK), ICMT (UK), CHPE (Pak), Pakistan.

  • Amer Iqbal, Combined Military Hospital Rawalpindi, Pakistan.

    MBBS, Trainee FCPS Emergency Medicine, Combined Military Hospital Rawalpindi, Pakistan.

  • Anees Ur Rehman, Combined Military Hospital Rawalpindi, Pakistan.

    MBBS, Trainee FCPS Emergency Medicine, Combined Military Hospital Rawalpindi, Pakistan.

  • Riaz Ahmad, Combined Military Hospital Rawalpindi, Pakistan.

    MBBS, Trainee FCPS Emergency Medicine, Combined Military Hospital Rawalpindi, Pakistan.

  • Maham Ali, Combined Military Hospital Rawalpindi, Pakistan.

    MBBS, House Officer, Emergency Medicine, Combined Military Hospital Rawalpindi, Pakistan.

References

Asfaw ZK. National Trauma Registries in LMICs: Long-Overdue Priority Comment on "Neurotrauma Surveillance in National Registries of Low- and Middle-Income Countries: A Scoping Review and Comparative Analysis of Data Dictionaries". Int J Health Policy Manag. 2023;12:7504. doi: 10.34172/ijhpm.2023.7504. Epub 2023 Apr 29.

Graham SM, Chokotho L, Mkandawire N, Laubscher M, Maqungo S, Haonga B, Njambilo G, Harrison WJ, Costa ML; National Institute for Health and Care Research Global Health Research Group on Global Injury. Injury: a neglected global health challenge in low-income and middle-income countries. Lancet Glob Health. 2025 Apr;13(4):e613-e615.

Taghavi S, Nassar AK, Askkari R. Hypovolemia and hypovolemic shock. InStatPearsl [internet] 2025 Jun 1. StatPearls Publishing

Bella FM, Bonfichi A, Esposito C, Zanza C, Bellou A, Afondrini S, Voza A, Piccioni A, Di Sabatino A, Savioli G. Extended Focused Assessment with Sonography for Trauma in Emergency Department: A Comprehensive Review. Journal of Clinical Medicine. 2025 May 15;14(10):3457

Wanjiku G, Dreizler L, Wu S, Baird J, Wachira B. Utility of hand-held ultrasound for image asquision and interpretation by trained Kenyan providers. The Ultrasound Journa, 2023 Mar 8;15(1):12.

Gul B, Anwar J, Pervaiz K, Niaz A, Sultana N, Tariq M. Diagnostic Accuracy of Extended Focused Assessment with Sonography For Trauma (E-Fast) Keeping Contrast Enhanced Ct Chest And Abdomen as Gold Standard. Pak Armed Forces Med J 2022; 72(Suppl-2): S341-345

Sumbla Salman, Bushra Jawaid, Zahida Ismail, Bushra Saeed Khan, Nadhra Salman, Rabia Hameed, Iqra Anees Rajput, Hafiza Shabina, Zubair Nisar, Noman Ahmed Khan. Ultrasound eFAST vs CT CAP in Blunt Trauma Paitents: An Evidence-Based Comparative Analysis in Pakistan. Fortune Journal of Health Sciences. 8(2025):658-663

Comparison of Diagnostic Accuracy of Focused Assessment with Sonography for Trauma (FAST) vs Computed Tomography for the Diagnosis of Blunt Torso Trauma Journal of Health and Medical Sciences, Vol.3, No.1 (2020)

Devadoss H, Sharma P, Nair VV, Rehsi SS, Roy N, Rao PP. Diagnostic accuracy of e-FAST in stable blunt trauma chest: a prospective analysis of 110 cases at a Tertiary Care Center. Indian Journal of Critical Care Medicine: Peer-reviewed, Official Publication of Indian Society of Critical Care Medicine. 2021 Oct;25(10):1167.

Sathianathan P, Bhoi S, Sahu AK, Aggarwal P, Sinha TP, Nayer J, et al. To validate the F-AST score as a CT decision tool in pediatric blunt abdominal trauma: A prospective diagnostic accuracy study. Am J Emerg Med. 2025;96:237-42.

DeMasi S, Parker MS, Joyce M, Mulligan K, Feeser S, Balderston JR. Thoracic point-of-care ultrasound is an accurate diagnostic modality for clinically significant traumatic pneumothorax. Acad Emerg Med. 2023;30(6):653-61.

Nti BK, Benzoni N, Starr R, Hays M, Vish D, End B, et al. Serial Trauma Abdominal Ultrasound in Children (STAUNCH): A Pilot Study. Pediatr Emerg Care. 2024;40(9):623-6.

Yazıcı MM, Yavaşi Ö, Çelik A, Altuntaş G, Altuntaş M, Bilir Ö, et al. The role of repeated extended FAST in patients with stable blunt thoracoabdominal trauma. Ulus Travma Acil Cerrahi Derg. 2023;29(5):553-9.

Garipoli A, Leone E, Stefanucci R, Beomonte Zobel B, Galluzzo M, Trinci M. A possible role of e-FAST in the hemodynamically stable polytrauma patient: results of a single trauma center preliminary restrospective study. J Ultrasound. 2025;28(1):75-9.

Ghafil C, Matsushima K, Guzman R, Owattanapanich N, Reitz MM, Garapati H, et al. Performance of Focused Assessment with Sonography for Trauma Following Resuscitative Thoracotomy for Traumatic Cardiac Arrest. World J Surg. 2022;46(1):91-7.

Malek D, Santillanes G, Hsiao V, Mailhot T, Claudius I. Occult Pneumothorax Identification on Extended Focused Assessment with Sonography for Trauma Examination in Children. Pediatr Emerg Care. 2021;37(10):e599-e601.

Santorelli JE, Chau H, Godat L, Casola G, Doucet JJ, Costantini TW. Not so FAST-Chest ultrasound underdiagnoses traumatic pneumothorax. J Trauma Acute Care Surg. 2022;92(1):44-8.

Santorelli JE, Marshall A, Perkins L, Adams L, Kurth L, Doucet JJ, et al. Lung ultrasonography underdiagnoses clinically significant pneumothorax. Surgery. 2024;176(6):1766-70.

Sutarjono B, Kessel M, Alexander D, Grewal E. Is it time to re-think FAST? A systematic review and meta-analysis of Contrast-Enhanced Ultrasound (CEUS) and conventional ultrasound for initial assessment of abdominal trauma. BMC Emerg Med. 2023;23(1):8.

De Mond J, Ghio M, Ritondale J, Butts C, McGrew P. Focused assessment with sonography for trauma exam for diagnosis of pericardial effusion in penetrating thoracic trauma - A retrospective review from a level 1 trauma center. Am J Surg. 2024;235:115788.

Armstrong LR, Rutherford NR, Heidel RE, Smith LM, Butts C. The Effect of BMI on eFAST Accuracy in Trauma by Residents in the Emergency Room. Am Surg. 2023;89(7):3238-40.

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Published

2025-11-12