To determine the accuracy of focused assessment with sonography for trauma done by nonradiologists and its comparative analysis with radiologists in emergency department of a level 1 trauma center of India

Concepts for point-of-care ultrasound training in low resource settings: a scoping review

BACKGROUND

Point-of-care ultrasound (POCUS) is a potent diagnostic tool especially in resource-limited settings. The implementation of POCUS diagnostics requires adequate training of POCUS operators. This scoping review aimed to identify and describe POCUS training concepts that have been applied in low-and middle-income countries (LMICs).

METHODS AND FINDINGS

All studies on diagnostic POCUS training in LMICs that could be found in the Cochrane, Embase, Google Scholar, and Medline databases up to July 6, 2023, were included and data was extracted for descriptive analysis. The review protocol was registered at OSF https://doi.org/10.17605/OSF.IO/8FQJW . A total of 53 publications were included with 59% of studies (n = 31) conducted in Africa and 23% (n = 12) in Asia. The majority of studies (n = 41, 81%) described short courses amongst which 40% were one-off sessions and 60% described longitudinal trainings. Curricula were mostly related to emergency medicine and obstetrics and organ-focused protocols (lung n = 29 (54%), cardiac n = 28 (53%), obstetric n = 23 (43%)). Trainees were largely medical doctors and clinical officers with minimal or absent ultrasound skills. Training challenges included resource constraints and lack of context adaptation. Best practice recommendations included focus on hands-on training, low trainer to trainee ratio, protected training time, online training options, use of local trainers, short and concise training manuals in print, continuous supervision and early and on-going evaluation, as well as tele-mentoring.

CONCLUSIONS

Context integration and focus on local needs, trainer availability and suitability, durable equipment and maintenance, as well as emphasis on hands on training including patients with relevant pathology, were key aspects for targeted and sustainable POCUS training in LMICs identified in this review.

Resuscitation following trauma & role of trauma training programmes in emergency settings: A literature review & survey

Background & objectives Traumatic injuries, especially in low- and middle- income countries (LMICs), present significant challenges in patient resuscitation and healthcare delivery. This study explores the role of trauma training programmes in improving patient outcomes and reducing preventable trauma-related deaths. Methods A dual approach was adopted, first a literature review of trauma training in LMICs over the past decade, along with a situational assessment survey. For the review of literature, we searched the PubMed database to identify key challenges and innovative practices in trauma training programmes in LMIC's. The survey, conducted among healthcare professionals in various LMICs, collected direct insights into the challenges and the status of trauma training programmes in these countries. Results The literature review analysed 68 articles, with a significant focus on the African subcontinent (36 studies), underscoring the region's emphasis on research on trauma training programmes. These studies mainly targeted physicians, clinicians, postgraduate trainees in surgical or anaesthesia fields and medical students (86.8%), highlighting innovations like simulation-based training and the cascading training model. In our survey, we received 34 responses from healthcare professionals in India, Belarus, Azerbaijan, Nepal and Pakistan. Around 52.9 per cent reported the absence of established trauma training programmes in their settings. The majority of respondents advocated for hands-on, simulation-based training (94.1%) and emphasised the need for structured training programmes (85.3%), feedback sessions (70.6%) and updated protocols (61.8%). This combined data underlined the critical gaps and potential improvements in trauma training programmes and resuscitation practices in LMICs. Interpretation & conclusions Effective trauma care in LMICs requires the establishment of comprehensive, tailored training programmes. Key interventions should include subsidization of pre-existing trauma courses and the adoption of World Health Organization Guidelines for essential trauma care, implementation of trauma quality improvement and review processes and the incorporation of focused assessment with sonography in trauma (FAST) in emergency departments. These steps are crucial for equipping healthcare workers with vital skills and knowledge, fostering a culture of continuous learning and improvement in the realm of trauma care.

Computed tomography benefits and cost in hemodynamically stable patients with blunt abdominal trauma at an Egyptian University Hospital

Background

Trauma is a significant cause of mortality, especially among individuals aged between 15 and 44 years, with a substantial burden falling on economically active populations. Low- and middle-income countries (LMICs) bear the burden of trauma-related deaths, accounting for over 90 % globally. In Egypt, trauma rates are increasing, primarily due to road traffic crashes (RTC), affecting males disproportionately. Blunt abdominal trauma, often caused by RTC, can lead to missed intra-abdominal injuries (IAIs) due to atypical symptoms. Computed Tomography (CT) offers high sensitivity and specificity in detecting IAIs, but concerns about cost and radiation exposure exist.

Methodology

This study investigates the roles of Focused Assessment with Sonography for Trauma (FAST) and CT in managing blunt abdominal trauma. A retrospective cohort study was conducted on hemodynamically stable patients. Data included patient demographics, trauma details, healthcare decisions, costs, and outcomes.

Results

Computed tomography significantly reduced unnecessary laparotomies (12.3% vs. 24.8 %, p = 0.001), shortened hospital stays (4.83±0.71 days vs. 6.15±1.28 days, p = 0.005), and reduced ICU admissions (8 vs. 32, p = 0.023) compared to FAST alone. Overall costs were lower in the CT & FAST Group ($2055.95 vs. $3488.7, p = 0.0001), with no significant difference in missed IAIs.

Conclusion

This study highlights the limitations of relying solely on FAST for IAIs and underscores the value of CT in guiding healthcare decisions. Incorporating CT led to reduced negative laparotomies, shorter hospital stays, and fewer ICU admissions. While CT incurs initial costs, its long-term benefits outweigh expenditures, particularly in LMICs. This study provides insights into optimizing diagnostic approaches for blunt abdominal trauma in low-resource settings.

Visibility of Prevertebral Soft Tissues in the Neck Using Ultrasonography: A Feasibility Study

OBJECTIVE

To aid emergent diagnosis of postoperative retropharyngeal hematoma in anterior cervical spine surgery patients, this study investigates ultrasonography's potential role by evaluating the visibility of retropharyngeal and prevertebral soft tissues in the neck using ultrasound and potential correlations with body habitus.

METHODS

The visibility of the anterior vertebral bodies and the prevertebral soft tissues in both sides of the neck was recorded and analyzed with 95% CI using the Wilson method. Body mass index, neck circumference, and neck length were measured. A point-biserial correlation was performed to compare body habitus with visibility of vertebrae and prevertebral tissues.

RESULTS

Longus colli muscle and C3 to C6 were successfully visualized in all 10 (100%) cases on both sides. C2 was only visible in 6 (60%) on both sides. C7 was visible in 9 (90%) on the right and 7 (70%) on the left. The esophagus was visible in 7 (70%) on the right and 10 (100%) on the left. There was a significant negative correlation with neck circumference and C2 visibility on the right side, r(8) = -0.76, P = 0.011.

CONCLUSIONS

Ultrasonography was successful in visualizing prevertebral tissues, with a trend of obstructed visibility with wider and longer necks.

CLINICAL RELEVANCE

Ultrasonography has potential to aid early detection of postoperative retropharyngeal hematoma after cervical spine surgery.

LEVEL OF EVIDENCE: 4

Ultrasound compared with projection radiography for the detection of soft tissue foreign bodies - A technical note

INTRODUCTION

Soft tissue foreign bodies (STFBs) present a diagnostic challenge depending on their composition. Untreated complications can arise, namely infection through to loss of function. General (projection) radiography is recommended as the first line imaging examination. However, some STFBs are radiolucent, leading to false negative radiographs. The aim of this in vitro study was to compare ultrasound with projection radiographs for the detection of a range of different types of STFB.

METHOD

Ethical approval (for use of participants to evaluate images) was granted by the Higher Education Institute's departmental Ethics Committee. Seven hand phantoms were created from a water, gelatine and psyllium mix. A different STFB (radiolucent and radiopaque) was inserted into six phantoms, with the seventh being a control. Ultrasound and projection radiograph images were generated of each phantom. Participants (academics and radiography students) reviewed all images.

RESULTS

50 responses were received from a study population of approximately 400, (10 academics, 40 students). The ability of ultrasound to detect radiolucent foreign bodies performs well compared with projection radiography: sensitivity 94% versus 9%, specificity 90% versus 88%. For radiopaque foreign bodies the data was more mixed: sensitivity 96% versus 99%, specificity 90% versus 88%.

DISCUSSION

These data suggest that ultrasound is superior to projection radiography for the detection of radiolucent STFBs. Limitations include the lack of formal postgraduate ultrasound training within the study population and a lack of simulated bony structure within the hand phantoms.

IMPLICATIONS FOR PRACTICE

Ultrasound has the potential to be a useful modality in the detection of STFBs, particularly radiolucent objects. There are associated challenges such as conducting ultrasound in the vicinity of a wound, but further exploration of this application of ultrasound is warranted.

Combination of Focused Assessment With Sonography for Trauma (FAST) Scan and Detection of Hematuria to Exclude Intra-abdominal Injuries Following Blunt Abdominal Trauma

Background Blunt abdominal trauma (BAT) is the most common pattern of abdominal traumas. It may be associated with intra-abdominal injuries (IAIs). Exploratory laparotomies are only needed in a minority of patients after BAT. Methodology All BAT patients who presented to the El Demerdash Hospital of Ain Shams University, Cairo, Egypt during the study period were traced. Parameters including demographic data, focused assessment with sonography for trauma (FAST) scan, CT scan results, and hematuria were collected. The cohort was divided according to the CT scan results into two groups: patients with IAIs and patients without IAIs. Results Males represented 78.2% of the patients, and the mean age of the recruited patients was 32.1 ± 18 years. Road traffic accidents represented the main cause of trauma (58%). Patients with IAIs detected by CT scan represented 1.62%, and hematuria was detected in 88.9% of them. The specificity of FAST was 97.1%, and that of hematuria was 84.1%, and for the combination of both tests, the specificity was 99.3%. Conclusion IAIs after BAT can usually be excluded if both FAST and hematuria are negative, provided that the patient is stable.

Splenic artery aneurysm in obstetric patients: a series of four cases with different clinical presentation and outcome

OBJECTIVE

To describe four consecutive cases of splenic artery aneurysm with different clinical patterns of presentation among obstetric patients.

METHOD

A series of four cases of splenic artery aneurysm diagnosed in pregnant or post-partum women at our University center between January 1998 and December 2020. Clinical and radiological data were retrospectively obtained by reviewing paper and electronic medical records after acquiring patient's consent.

RESULTS

One case was completely asymptomatic and incidentally identified at the beginning of pregnancy, thus allowing for multidisciplinary treatment. The other three cases were unknown: two manifested with maternal collapse due to aneurysm rupture in the third trimester of gestation, whereas one presented with acute abdominal pain during the post-partum period and was successfully managed before rupture occurred.

CONCLUSION

Although being extremely rare, SAA rupture in obstetric patients can be associated with dramatic consequences. Since early suspicion and prompt intervention are essential to avoid fatal outcomes, promotion of knowledge of all the potential clinical patterns of presentation of SAA rupture among obstetric patients is mandatory.

Diagnostic Accuracy of Focused Assessment with Sonography for Blunt Abdominal Trauma in Pediatric Patients Performed by Emergency Medicine Residents versus Radiology Residents

INTRODUCTION

Focused assessment with sonography for trauma (FAST) has been shown to be useful to detect intraperitoneal free fluid in patients with blunt abdominal trauma (BAT).

OBJECTIVE

We compared the diagnostic accuracy of FAST performed by emergency medicine residents (EMRs) and radiology residents (RRs) in pediatric patients with BAT.

METHOD

In this prospective study, pediatric patients with BAT and high energy trauma who were referred to the emergency department (ED) at Al-Zahra and Kashani hospitals in Isfahan, Iran, were evaluated using FAST, first by EMRs and subsequently by RRs. The reports provided by the two resident groups were compared with the final outcome based on the results of the abdominal computed tomography (CT), operative exploration, and clinical observation.

RESULTS

A total of 101 patients with a median age of 6.75 ± 3.2 years were enrolled in the study between January 2013 and May 2014. These patients were evaluated using FAST, first by EMRs and subsequently by RRs. A good diagnostic agreement was noted between the results of the FAST scans performed by EMRs and RRs (κ = 0.865, P < 0.001). The sensitivity, specificity, positive and negative predictive values, and accuracy in evaluating the intraperitoneal free fluid were 72.2%, 85.5%, 52%, 93.3%, and 83.2%, respectively, when FAST was performed by EMRs and 72.2%, 86.7%, 54.2%, 93.5%, and 84.2%, respectively, when FAST was performed by RRs. No significant differences were seen between the EMR- and RR-performed FAST.

CONCLUSION

In this study, FAST performed by EMRs had acceptable diagnostic value, similar to that performed by RRs, in patients with BAT.

Interobserver Agreement on Focused Assessment with Sonography for Trauma in Blunt Abdominal Injury

Introduction

Trauma constitutes a major public health problem. Ninty percent of world's fatalities on road occur in low and middle-income countries. Focused assessment with sonography in trauma (FAST) has a key role in trauma investigation, altering subsequent management in a significant number of patients. There is a rising trend of introducing FAST examination to non-radiologists and junior members of healthcare team to hasten triage of trauma patients.

Objective

To determine interobserver agreement on focused assessment with sonography for trauma in blunt abdominal injury between senior and junior residents.

Methods

This cross-sectional study was conducted at Aga Khan University Hospital. Three hundred patients with blunt abdominal trauma meeting inclusion criteria were enrolled. FAST was performed using standard curvilinear 3.5-5 MHz transducer. Agreement between junior and senior residents was measured and Kappa statistic was calculated.

Results

Mean age of the patients included in the study was 30.04 ± 18.09 years. Among these 237 (79%) were male and 63 (21%) were female. Sixteen (5.3%) were positive for intraperitoneal free fluid while the remaining 284 (94.7%) were negative. A total of 19 FAST examinations were reported positive by junior residents, of which 15 (78.9%) were confirmed by a senior resident to be correct, while four (21.05%) were falsely labeled positive by a junior resident. A total of 281 negative FAST examinations were reported by junior residents, of which 280 (99.6%) were confirmed by a senior resident, while only one (0.003%) was falsely labeled negative. Kappa statistic was calculated for inter-observer agreement on FAST examination findings, which showed a kappa value of 0.84 (very good agreement), with a p-value of <0.001.

Conclusion

Our study suggests very good interobserver agreement on FAST examination between senior and junior resident in patients with blunt trauma to the abdomen. Results suggest that FAST can be easily learnt with minimal radiology training and may have greater applicability in trauma.

Trauma care in India: A review of the literature

BACKGROUND

We reviewed the published literature related to prehospital and hospital trauma care in India to identify how trauma care is defined in the literature and what factors limit the delivery of appropriate trauma care. In summarizing the evidence and recommendations regarding trauma care, this review identifies essential research and development goals to address the burden of injury in India.

METHODS

A review of the literature was conducted between August 2014 and September 2014. The literature was sorted into 3 categories: prehospital care, hospital clinical care, and hospital administrative care. The characteristics of trauma care were explored using the Essential Trauma Care Project of the World Health Organization.

RESULTS

A total of 38 studies were included. Prehospital care lacked care provided at the scene of the injury, timely transport to a hospital, and transport via ambulance. With regard to hospital care, we found a lack of capabilities of basic clinical care, such as airway management, insertion of chest tubes, and efforts at resuscitation. There was a lack of administrative capabilities, including trauma data systems, trauma-specific training, quality improvement, and development of designated trauma teams.

CONCLUSION

The high rate of injury-related deaths and disabilities in India could be in part due to the absence of integrated and organized systems of trauma care. In the prehospital setting, a multisector approach must be implemented to address the training of emergency medical service providers and community members. Prehospital transport time can be decreased through improved communication and transport modalities. The Indian trauma care system could also be strengthened through hospital-based training programs and trauma response teams.

Diagnostic accuracy of emergency-performed focused assessment with sonography for trauma (FAST) in blunt abdominal trauma

Introduction

Intra-abdominal hemorrhage due to blunt abdominal trauma is a major cause of trauma-related mortality. Therefore, any action taken for facilitating the diagnosis of intra-abdominal hemorrhage could save the lives of patients more effectively. The aim of this study was to determine the accuracy of focused assessment with sonography for trauma (FAST) performed by emergency physicians.

Methods

In this cross-sectional study from February 2011 to January 2012 at 7^th Tir Hospital in Tehran (Iran), 120 patients with abdominal blunt trauma were chosen and evaluated for abdominal fluid. FAST sonography was performed for all the subjects by emergency residents and radiologists while they were blind to the other tests. Abdominal CTs, which is the gold standard, were done for all of the cases. SPSS 20.0 was used to analyze the results.

Results

During the study, 120 patients with abdominal blunt trauma were evaluated; the mean age of the patients was 33.0 ± 16.6 and the gender ratio was 3/1 (M/F). The results of FAST sonography by emergency physicians showed free fluid in the abdomen or pelvic spaces in 33 patients (27.5%), but this was not observed by the results of CT scans of six patients; sensitivity and specificity were 93.1 and 93.4%, respectively. As for tests performed by radiology residents, sensitivity was a bit higher (96.5%) with lower specificity (92.3%).

Conclusion

The results suggested that emergency physicians can use ultrasonography as a safe and reliable method in evaluating blunt abdominal trauma.

A Comparative Analysis of Diagnostic Accuracy of Focused Assessment With Sonography for Trauma Performed by Emergency Medicine and Radiology Residents

BACKGROUND

Focused assessment with sonography in trauma (FAST) is a method for prompt detection of the abdominal free fluid in patients with abdominal trauma.

OBJECTIVES

This study was conducted to compare the diagnostic accuracy of FAST performed by emergency medicine residents (EMR) and radiology residents (RRs) in detecting peritoneal free fluids.

PATIENTS AND METHODS

Patients triaged in the emergency department with blunt abdominal trauma, high energy trauma, and multiple traumas underwent a FAST examination by EMRs and RRs with the same techniques to obtain the standard views. Ultrasound findings for free fluid in peritoneal cavity for each patient (positive/negative) were compared with the results of computed tomography, operative exploration, or observation as the final outcome.

RESULTS

A total of 138 patients were included in the final analysis. Good diagnostic agreement was noted between the results of FAST scans performed by EMRs and RRs (κ = 0.701, P < 0.001), also between the results of EMRs-performed FAST and the final outcome (κ = 0.830, P < 0.0010), and finally between the results of RRs-performed FAST and final outcome (κ = 0.795, P < 0.001). No significant differences were noted between EMRs- and RRs-performed FASTs regarding sensitivity (84.6% vs 84.6%), specificity (98.4% vs 97.6%), positive predictive value (84.6% vs 84.6%), and negative predictive value (98.4% vs 98.4%).

CONCLUSIONS

Trained EMRs like their fellow RRs have the ability to perform FAST scan with high diagnostic value in patients with blunt abdominal trauma.

Scanning and War: Utility of FAST and CT in the Assessment of Battlefield Abdominal Trauma

OBJECTIVE

To determine utilization and accuracy of focused assessment with sonography for trauma (FAST) and computed tomography (CT) in a mature military trauma system to inform service provision for future conflicts.

BACKGROUND

FAST and CT scans undertaken by attending radiologists contribute to surgical decision making for battlefield casualties at the Joint Force, Role 3 Medical Treatment Facility at Camp Bastion (R3), Afghanistan.

METHODS

Registry data for abdominally injured casualties treated at R3 from July to November 2012 were matched to radiological and surgical records to determine diagnostic accuracy for FAST and CT and their influence on casualty management.

RESULTS

A total of 468 casualties met inclusion criteria, of whom 85.0% underwent FAST and 86.1% abdominal CT; 159 (34.0%) had abdominal injuries. For detection of intra-abdominal injury, FAST sensitivity (Sn) was 0.56, specificity (Sp) 0.98, positive predictive value (PPV) 0.87, negative predictive value (NPV) 0.90, and accuracy (Acc) 0.89. For CT, Sn was 0.99, Sp 0.99, PPV 0.96, NPV 1.00, and Acc 0.99. Forty-six solid organ injuries were identified in 38 patients by CT; 17 were managed nonoperatively. A further 61 patients avoided laparotomy after CT confirmed extra-abdominal wounds only. The negative laparotomy rate was 3.9%.

CONCLUSIONS

FAST and CT contribute to triage, guide surgical management, and reduce nontherapeutic laparotomy. When imaging is available, these data challenge current doctrine about inadvisability of nonoperative management of abdominal injury after combat trauma.