Neurologic complications of polytrauma

Patterns of traumatic injuries and outcomes to motorcyclists in a developing country: A cross-sectional study

OBJECTIVE

Motorcyclists are frequently involved in road traffic accidents and may suffer polytraumatic injuries, contributing a substantial burden on healthcare systems particularly in lower-middle-income countries. This study aimed to describe patterns of injury, in-hospital course, and outcomes of road accident trauma in motorcyclists, including polytrauma, at a Trauma Facility in Pakistan.

METHODS

A retrospective review was conducted by using relevant trauma codes to extract data from records for all victims presenting with motorcycle trauma between January 2018 and June 2019, to a tertiary care hospital in Pakistan. Data collected included victim characteristics, mechanism of accident, patterns of traumatic injury, management, in-hospital complications, and outcomes. Polytrauma was defined as traumatic injuries in two or more anatomic regions with abbreviated injury scale (AIS) ≥ 3. Multivariable logistic regression, adjusted for age, gender, and mechanism of accident, was performed to identify in-hospital complications and outcomes associated with polytrauma.

RESULTS

A total of 514 victims, 90.9% male and 39.5% aged between 18-30 years, were included in this study. The victim was the motorcycle driver in 94.6% of cases. The most common mechanism of accident was motorcycle vs. other motor vehicle (56.2%). Patients were mostly admitted under the services of Orthopedic Surgery (50.8%) and Neurosurgery (30%), with common sites of injury being the lower extremity (42.6%), head (38.1%), and upper extremity (26.8%). Polytrauma occurred in 19.5% of victims. Patients were managed surgically in 77.3% of cases, with the most common procedure being open reduction of fractures (48.1%). Blood transfusion was required in 4.1% of patients. The commonest in-hospital complication was acute kidney injury (23.7%). The median length of stay was 3 days, and 4.1% of patients expired in the hospital. Polytrauma was significantly associated with the need for blood transfusion (2.642 [1.053-6.630]), AKI (2.212 [1.339-3.652]) and hospital length of stay (1.059 [1.025-1.094]), but not with mortality.

CONCLUSION

Although orthopedic injuries occur most frequently in motorcycle trauma, polytrauma necessitating multi-disciplinary management and complicating hospital stay is also common. Understanding patterns of injuries and management in motorcycle trauma will enable trauma teams in a developing country like Pakistan to devise evidence-based management protocols, especially for cases of polytrauma.

Predictors of swallowing outcomes in patients with combat-injury related dysphagia

BACKGROUND

Traumatic injuries, such as those from combat-related activities, can lead to complicated clinical presentations that may include dysphagia.

METHODS

This retrospective observational database study captured dysphagia-related information for 215 US military service members admitted to the first stateside military treatment facility after sustaining combat-related or combat-like traumatic injuries. A multidimensional relational database was developed to document the nature, course, and management for dysphagia in this unique population and to explore variables predictive of swallowing recovery using Bayesian statistical modeling and inferential statistical methods.

RESULTS

Bayesian statistical modeling revealed the importance of maxillofacial fractures and soft tissue loss as primary predictors of poor swallowing outcomes. The presence of traumatic brain injury (TBI), though common, did not further complicate dysphagia outcomes. A more detailed examination and rating of videofluoroscopic swallow studies from a subset of 161 participants supported greater impairment for participants with maxillofacial trauma and no apparent relationship between having sustained a TBI and swallow functioning.

CONCLUSION

These analyses revealed that maxillofacial trauma is a stronger indicator than TBI of dysphagia severity and slower or incomplete recovery following combat-related injuries.

LEVEL OF EVIDENCE

Therapeutic/Care Management study, level IV.

The Effects of Balloon Occlusion of the Aorta on Cerebral Blood Flow, Intracranial Pressure, and Brain Tissue Oxygen Tension in a Rodent Model of Penetrating Ballistic-Like Brain Injury

Trauma is among the leading causes of death in the United States. Technological advancements have led to the development of resuscitative endovascular balloon occlusion of the aorta (REBOA) which offers a pre-hospital option to non-compressible hemorrhage control. Due to the prevalence of concomitant traumatic brain injury (TBI), an understanding of the effects of REBOA on cerebral physiology is critical. To further this understanding, we employed a rat model of penetrating ballistic-like brain injury (PBBI). PBBI produced an injury pattern within the right frontal cortex and striatum that replicates the pathology from a penetrating ballistic round. Aortic occlusion was initiated 30 min post-PBBI and maintained continuously (cAO) or intermittently (iAO) for 30 min. Continuous measurements of mean arterial pressure (MAP), intracranial pressure (ICP), cerebral blood flow (CBF), and brain tissue oxygen tension (PbtO₂) were recorded during, and for 60 min following occlusion. PBBI increased ICP and decreased CBF and PbtO₂. The arterial balloon catheter effectively occluded the descending aorta which augmented MAP in the carotid artery. Despite this, CBF levels were not changed by aortic occlusion. iAO caused sustained adverse effects to ICP and PbtO₂ while cAO demonstrated no adverse effects on either. Temporary increases in PbtO₂ were observed during occlusion, along with restoration of sham levels of ICP for the remainder of the recordings. These results suggest that iAO may lead to prolonged cerebral hypertension following PBBI. Following cAO, ICP, and PbtO₂ levels were temporarily improved. This information warrants further investigation using TBI-polytrauma model and provides foundational knowledge surrounding the non-hemorrhage applications of REBOA including neurogenic shock and stroke.