Direct penetrating and indirect neck trauma as a cause of internal carotid artery thrombosis and secondary ischemic stroke

Traumatic left common carotid artery thrombosis with ischemic brain injury: A case report

INTRODUCTION AND IMPORTANCE

Penetrating neck injuries (PNIs) are common and are associated with arterial injuries in 10-25 % of the cases, with carotid artery twice as frequent as to vertebral arteries. Carotid artery injury constitutes about 22 % of all cervical vascular injuries.

CASE PRESENTATION

We present a case of a 44-year-old male who sustained penetrating neck injury in a motor traffic crash. He presented with monoplegia of his right upper limb and an open wound on the left side of his neck which was not actively bleeding hence surgical debridement was done and sutured. CT angiography and CT-scan brain concluded of left common carotid thrombosis secondary to penetrating neck trauma with ischemic brain injury. Patient was successfully managed conservatively.

CLINICAL DISCUSSION

The general mortality rate in PNI with associated cervical vascular injury is approximately 66 %. Artery dissection occurs when the intima tears causing intramural hematoma leading to narrowing or occlusion. CT angiography is the best and fastest modality to assess these injuries and management depends on the clinical bases of the patient.

CONCLUSION

Neck is vulnerable to external trauma because it is not protected by the skeleton. The neck contains vital structures such as the trachea, esophagus, blood vessels and nervous system organs. Vascular injuries can be life-threatening owing to its prompt clinical assessment and investigation.

Emboli stroke following migration of carotid foreign body: A case report

Foreign body embolization can cause intracranial artery occlusion with ischemic stroke. Reported etiologies include post cerebrovascular interventions, migration of esophageal foreign body and neck trauma. We reported a case with punctured wound at left neck, X-ray and computed tomography revealed a foreign body located in the carotid region. The patient eventually developed stroke symptoms in the next day after operation. Non-contrast brain Computer tomography at that time revealed that porcelain fragment located at the suprasellar area, and infarction of the left anterior basal ganglion. Our patient is the first reported case having an embolic stroke secondary to distal migration of a foreign body from the carotid artery after neck trauma. We call attention to this rare neurologic complication of neck trauma with foreign body retention. Appropriate and prompt identification of concurrent vascular injuries with retention of foreign body is strongly advised in neck trauma patients.

Penetrating Injury to the Carotid Artery: Characterizing Presentation and Outcomes from the National Trauma Data Bank

BACKGROUND

Penetrating injury to the neck can be devastating because of the multiple vital structures in close proximity. In the event of injury to the carotid artery, there is a significantly increased likelihood of morbidity or mortality. The purpose of this study was to assess presenting characteristics associated with penetrating injury to the carotid artery and directly compare approaches to surgical management.

METHODS

Data from the National Trauma Data Bank from 2002-2016 were accessed to evaluate adult patients sustaining penetrating injury to the common or internal carotid artery. Management (operative versus nonoperative) and surgical approach (open versus endovascular) were evaluated based on presentation characteristics, and outcomes were compared after propensity score matching.

RESULTS

Three thousand three hundred ninety-one patients fitting inclusion criteria and surviving past the emergency department were included in analyses (nonoperative: 1,976 [58.3%] patients and operative: 1,415 [41.7%] patients). The operative group was further classified by intervention as open = 1,192 patients and endovascular: 154 patients. On presentation, the nonoperative group demonstrated significantly higher prevalence of coma (Glasgow Coma Scale ≤8: nonoperative = 49.3% versus operative = 40.8%, P < 0.001), severe overall injury burden (Injury Severity Score ≥25: nonoperative = 42.3% versus operative = 33.3%, P < 0.001), and severe head injury (Abbreviated Injury Score ≥ 3: nonoperative = 44.9% versus operative = 22.0%, P < 0.001). After propensity score matching, the nonoperative group demonstrated higher mortality (nonoperative = 28.9% versus operative = 18.5%, P < 0.001), and lower rates of stroke (nonoperative = 6.6% versus operative - = 10.5%, P < 0.001). There were no differences in outcomes relating to surgical approach.

CONCLUSIONS

These results indicate that nonoperative patients often present with a more severe overall injury burden, particularly injury to the head, and not surprisingly, have higher rates of mortality. The lack of significant differences in outcomes relating to surgical approach indicates open versus endovascular invention should be individualized to the patient-for example, based on presenting characteristics and the location of the injury.

[A case of internal carotid thrombus associated with brain infarction]

A 49-year-old man was transferred to our hospital with chief complaint of global aphasia and weakness of right upper and lower limbs. Brain MRI showed ultra-acute cerebral infarction in left anterior cerebral artery and middle cerebral artery territory and MRA showed occlusion of A2 and M2. Although t-PA was administrated intravenously, symptoms didn't improve and giant internal carotid thrombus (size 6 × 7 × 17 mm) was recognized at left internal carotid artery by carotid ultrasonography. After started anticoagulant therapy, thrombus was miniaturized gradually and finally disappeared. Anticoagulant therapy is effective to internal carotid thrombus and carotid ultrasonography is useful to confirm the effectiveness. We suggest that clinicians should enforce anticoagulant therapy for the first choice to internal carotid thrombus.

Rapid hemostasis in a sheep model using particles that propel thrombin and tranexamic acid

OBJECTIVES/HYPOTHESIS

Bleeding during endoscopic sinus surgery and open surgeries can easily obstruct the surgeons' field of view and increase morbidity and risk of intraoperative complications. Intraoperative bleeding could potentially be addressed by a hemostatic agent that safely disperses itself through the escaping blood. We tested the safety and efficacy of a self-propelling formulation of thrombin and tranexamic acid (SPTT) in stopping bleeding in a paranasal sinus injury and in an open surgical carotid injury sheep model.

STUDY DESIGN

Interventional animal study.

METHODS

SPTT was tested in the sinonasal space following endoscopic injury to the inferior turbinate of six sheep, and to the common carotid artery following open surgical injury in eight sheep. In the nasal cavity, bleeding time and local inflammation were measured and compared to plain gauze. Following carotid arteriotomy, successful hemostasis and markers of thrombosis and coagulopathy were compared to Floseal.

RESULTS

SPTT significantly decreased bleeding times in the sinonasal space compared to plain gauze (mean difference = 3.8 minutes, P = .002). All of the carotid bleeds (100%) were successfully controlled with SPTT after 10 minutes of application under pressure, compared to 25% with Floseal. No adverse events were noted, and there was no evidence of thromboembolism.

CONCLUSIONS

SPTT significantly reduced bleeding time in a sheep model of surgical sinus bleeding and successfully stopped bleeding following catastrophic carotid artery injury, with no adverse events observed.

LEVEL OF EVIDENCE

NA Laryngoscope, 127:787-793, 2017.