Clinical, Diagnostic, and Surgical Aspects of Right Ventricular Fragment Embolism Following Blast Trauma
Abstract
Abstract. A separate category of such injuries is fragment embolism of the heart and vessels, a rare consequence of ballistic trauma. This condition involves the traumatic penetration of a foreign body (usually a bullet or fragment) into a blood vessel, which then continues to migrate along the vessel to another part of the body. The rarity and high variability of clinical manifestations of such injuries have led to a lack of established treatment or management strategies.
Objective. Based on the experience of treating mine-blast injuries, to present the course, diagnosis, and treatment strategy for fragment embolism of the right heart chambers.
Material and Methods. Our experience includes 90 cases of mine-blast injuries. Direct heart injuries were observed in 40 patients. Localization of fragments in the right ventricular cavity was diagnosed in 14 patients. Fragment embolism of the right ventricular cavity was observed in 2 cases, accounting for 2.5% of the total number of patients with mine-blast injuries. The leading diagnostic method that enabled detection of the fragment was contrast-enhanced CT with synchronization.
Results. As a result of mine-blast fragment injuries, all 4 patients were wounded in the upper or lower limbs. No breaches of the chest cavity or diaphragm were observed. In all cases, fragments were found in the right ventricular cavity. Diagnosis of cardiac fragment presence was made at different times after injury, ranging from 1 day to 5 months. All patients underwent surgery using cardiopulmonary bypass via a trans-tricuspid approach. In all cases, there were no signs damage to the cardiac walls. A neodymium magnet was used during each operation.
Conclusions. The entry of fragments into the venous vessels of the upper and lower limbs may be accompanied by migration to the right heart chambers, with potential fixation to the trabeculae of the right ventricle and risk of entry into the pulmonary artery basin. In our opinion, to prevent fragment migration into the pulmonary artery system, priority should be given to the removal of fragments located in the RV cavity.
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