INTRODUCTION
Resuscitative endovascular balloon occlusion of the aorta (REBOA) can be useful for temporary hemorrhage control as a bridge technique to definitive hemostasis. REBOA can maintain proximal arterial pressure, but it causes organ ischemia due to aortic occlusion [1-3]. In order to reduce these complications, it is important to position the catheter balloon correctly, but it is currently difficult to accurately confirm the location of the catheter balloon in most trauma bays. REBOA under real-time fluoroscopy in hybrid ER for a patient with traumatic cardiac arrest has not yet been reported in the English literature.
CASE REPORT
A 50-year-old male visited the emergency room after falling from a height of 14 m. Upon arrival at the emergency room, the patient was in cardiac arrest and returned of spontaneous circulation after 2 minutes of cardiopulmonary resuscitation. The patient’s blood pressure was 64/42 mmHg. In the arterial blood gas analysis test, PH value was 6.99 and hemoglobin was 4.9 g/dL.
Computed tomography taken in a previous hospital showed unstable pelvic bone fracture, 5th lumbar spine compression fracture and multiple extravasation in the both internal iliac arteries. In addition, multiple extravasation in the both psoas muscle was noted (Fig. 1).
Fluid resuscitation and transfusion were performed, but the patient’s blood pressure was not recovered. We inserted a balloon catheter through the left common femoral artery and located the catheter in Zone III (Fig. 2). We maintained total occlusion for the first 3 minutes, then performed angioemolization alternately between patial inflation and total deflation under real-time fluoroscopy according to the patient’s blood pressure and other situations.
First, for both internal iliac arterial bleeding, embolization was performed as the concept of damage control interventional radiology (Fig. 3). However, since the patient’s blood pressure was not stabilized, additional embolization was performed on the bleeding of multiple lumbar arteries.
After the procedure, the patient’s blood pressure was recovered to 96/67 mmHg and hemoglobin level returned to 10.6 g/dL by emergency transfusion and the patient was admitted to the trauma intensive care unit. The patient underwent two orthopedic surgeries during the hospitalization period and was discharged without any complication dew to ischemic injury 72 days after hospitalization.
DISCUSSION
REBOA is a novel device approved by the Food and Drug Administration (FDA) in 2017 as an alternative to resuscitative thoracotomy [4]. It is very effective to get proximal arterial pressure but distal ischemia is one of main complications. So most of the REBOA guidelines recommend that REBOA should be placed at Zones I and III, depending on the location of the hemorrhage or hemodynamic status [5-7] and placement at Zone II should be always avoided for preservation of gastrointestinal perfusion [8].
Although the position of the balloon is important, it is not easy to inflate at the exact position when REBOA is performed with blind technique using external measurement. And there is a study that showed that the accuracy of the position was 12.5% when REBOA was performed targeting Zone III with blind technique [9].
In this case, the length of Zone III was 7.5 cm. We used a 7-French aortic occlusion catheter (RESCUE BALLOON®, Tokai Medical Products, Aichi, Japan) and when the balloon was fully inflated, the length was 5.5 cm. Since the length of Zone III is not that long compared to the length of the balloon, it would have been difficult to accurately position the balloon through external measurement. We were able to stably maintain the correct position of the balloon in various situations under real-time fluoroscopy. In this case, even if the balloon was located on the 1 cm proximal side, the ostium of the right renal artery could be blocked, causing ischemic injury.
As in this case, when REBOA is performed under real-time fluoroscopy, we can confirm the correct position of catheter balloon. The location of the balloon can be changed depending on the blood pressure applied to the balloon or the frictional force between the balloon and the aorta. Under real-time fluoroscopy, the location of the balloon (especially Zone III) can be positioned exactly where it is intended.
In severely injured patients, REBOA under real-time fluoroscopy has not been widely used. In patients who need REBOA, building a system that can check the position of the balloon in real time under real-time fluoroscopy is thought to be helpful for patient resuscitation.
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