Endovascular stent migration to the right ventricle causing myocardial injury

Stent migration as complication of endovascular treatment of vascular access stenosis: A systemic review

Outflow vein stenosis is one of the commonest complications of both native and prosthetic vascular access. Together with angioplasty, first-line treatment is stenting. Although it has been described as a uncommon complication, the risk of stent migration should be always considered. We aimed to conduct a systematic review of literature concerning stents migration in vascular access, the possible outcomes and treatments. This study was performed applying Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Searches were conducted in PubMed/Medline, Scopus, and Google scholar databases. Studies selection, data abstraction was done by two different reviewers. We identified 17 studies, comprising 18 cases (M:F 1:1, mean age 56 ± 18 (range 33-88)). All the patients underwent stenting for vascular access outflow stenosis. The commonest type of device reported was self expandible bare-metal stent. Intraoperative evidence of stent migration occurred in six cases at the final quality control, or for intraprocedure dyspnea onset. In two patients it was a incidental diagnosis. In the remaining cases, chest pain or dyspnea were the common delayed presentation symptoms. Even if stent migration is an uncommon event, it is burdened with low mortality and morbidity. Literature provide only few and frequently inadequate data. Stent removal is the treatment of choice when severe symptoms or cardiopulmonary complication are present. Endovascular procedures demonstrated to be an effective and safe alternative, while open surgical treatment is preferred whenever endovascular therapy failed or in selected cases.

Migrating Foreign Body in the Heart

Foreign bodies in the heart are a rare condition and an exact mechanism for this occurrence has not been well described. These objects can reach the heart by direct penetration due to local trauma or through intravenous migration or may remain in the heart after medical procedures. The most common foreign bodies that reach the heart are bullets and shrapnel. The purpose of this study is to review a case where a patient injected himself with recreational drugs. The needle subsequently dislodged from the syringe and migrated into the heart.

A review of the incidence, outcome and management of venous stent migration

INTRODUCTION

Percutaneous endovenous stenting has emerged during the last decade as the primary method of treating symptomatic venous outflow obstruction. A recognised complication of venous stenting is stent migration. The aim of this systematic review was to identify the number of cases reported in the published literature describing stent migration, to recognise risk factors that may be associated with this complication, and outcomes following migration.

METHODS

A review was conducted following MOOSE and PRIMSA guidelines and registered on PROSPERO. MEDLINE, EMBASE, and PubMed databases and key references were searched using specified keywords. All relevant data for primary procedure and subsequent presentation with stent migration was retrieved. Data was assessed as too low quality to allow for statistical analysis.

RESULTS

Between 1994 and 2020, 31 articles were identified comprised of 29 case reports and 2 case series providing data for 54 events of venous stent migration with 47/54 providing some data for stent used. Mean age of patients in who migration occurred was 50 years (range 19-88) and 57.6% (n=30) were male. Most reported cases were 60mm or less in length (38/46, 82.6%) and only 3 of the reports were stents greater than 14mm in diameter (3/47, 3.6%). None of the papers reported migration of stents of more than 100mm in length. In 85% of the migrated stent events, retrieval was attempted with 56% via an endovascular approach. The immediate outcome was satisfactory in 100% of the reported attempts whether by endovascular or open surgical approaches.

CONCLUSIONS

This literature review would suggest that the risk of migration is rare but may be underreported. The majority of reported cases are shorter and smaller diameter stents. The paucity of published data and the short term follow up provided suggest more formal data collection would provide a truer reflection of incidence however clear strategies to avoid migration need to be followed to prevent this complication from occurring.

Migration of covered stents in thoracic central vein obstruction procedures in patients with hemodialysis: Case report and literature review

OBJECTIVE

The objective of the study is to present a case of hemodialysis in which the covered stent that had migrated into the right ventricle was retrieved by exploratory thoracotomy, and to review the literature on the diagnosis and treatment of stent migration in thoracic central vein obstruction (TCVO) procedures for hemodialysis patients.

METHOD

A systematic search of the PubMed database was performed to identify clinical presentations, imaging strategies, stent types, and treatment modalities for stent migration in hemodialysis patients.

RESULTS

A total of 14 case reports on stent migration in TCVO procedures for hemodialysis patients were included and analyzed. Ten cases included migration to the cardiac chambers and the remainder migration to the pulmonary artery. The common symptoms of stent migration in TCVO procedures are reported to be chest pain and dyspnea, while three of the cases studied involved no symptoms. Echocardiography, chest X-ray, and computed tomography are the commonly used methods for the diagnosis of stent migration and identification of the precise positioning of the stent. Stent migration to the right subclavian or innominate veins was the most prevalent case (seven cases). All were bare stents. Seven cases involved retrieval by interventional surgery, while four cases involved retrieval by open heart surgery. However, there were three cases in which the "wait-and-see" approach was adopted since the patients were asymptomatic.

CONCLUSIONS

Stent migration in TCVO procedures is a rare but extremely serious complication. The causes are not fully understood. The current treatment strategies include interventional surgery, open heart surgery, and the "wait-and-see" approach.

I'll Stay a While: An Unusual Case of a Chronic Migrated Upper Extremity Endovascular Stent

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Migrated endovascular stent used for dialysis found in the right atrium.

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Chronic embedded stent in the right atrium.

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Echocardiographic evidence of embedded stent in the right atrium.

Stent Migration and Bail-out Strategies

Stent migration is an inherent complication of stent deployment. A number of factors are responsible for this dreaded complication. The stent may eventually migrate to the heart or lungs or in the process of migration damage structures en route to its final destination. A number of techniques are available to bail out interventionalists if such a situation should arise. Occasionally a wait and watch approach may be prudent.

Foreign bodies in the heart

BACKGROUND

Foreign bodies in the heart are rare, may reach the heart by different ways, and cause serious complications. X-ray, computerized tomography, and echocardiography are main diagnostic modalities. Foreign body can be removed surgically, percutaneously or can be managed conservatively. In this work, we analyzed 100 published cases of a foreign body in the heart and 4 cases that were identified in our hospital.

METHODS

We searched the literature for foreign body in the heart and found 100 published previously cases. Additional 4 cases were identified in our echo laboratory. A total series of 104 patients with a foreign body in the heart were analyzed for the etiology, clinical presentation, symptoms, complications and management.

RESULTS

Mean patients' age was 46, there were more men than woman 73 versus 31 [P < 0.00005]. The most common foreign bodies were parts of inferior vena cava filters and devices implanted for relieving hydrocephalus. Foreign bodies in the heart were symptomatic in 56% of patients. Right heart chambers were occupied more often. A total of 20% presented within the first 24 hours and 30% of patients presented years after the penetration of the foreign body. A majority of foreign bodies reached the heart by migration [88%]. Mortality was reported in 4 patients [3.8%]. Here 54% of the patients underwent surgical and 29% percutaneous removal of the foreign body, while 14% were followed conservatively.

CONCLUSION

Foreign bodies in the heart may present with a wide variety of symptoms. Physicians should be aware of this rare and peculiar complications which may be fatal. Larger devices may result in more severe complications.

Incidental Findings in Stress Echocardiography

Sonographic follow-up of surgical or other invasive procedures may lead to incidental findings, and knowledge of a patient’s treatment history is an important factor in properly interpreting these results. The treatment regimen for a patient with deep vein thrombosis and its sequelae can include a combination of anticoagulation, thrombolytic therapy, compression stocking, venous bypass, and stenting of the veins. This case presents an incidental finding during a stress echo examination of embolization into the right ventricle of a previously placed iliofemoral venous stent that required surgical removal. It provides an example of the reasons that sonographers need to understand patient history as well as examination protocols to properly evaluate the sonographic images and to anticipate that there may be unexpected findings with every case.

CT-assisted transfemoral intrahepatic portosystemic shunt in a long duration follow-up: A case report

BACKGROUND

Transjugular intrahepatic portosystemic shunt (TIPS) in patients with portal hypertension may be considered as a rescue therapy in case of recurrent variceal bleeding or failure of endoscopic management.

CASE REPORTS

We present a case of a patient with massive gastroesophageal variceal bleeding refractory to numerous endoscopic treatments in which TIPS was considered in an attempt to decrease the risk of potentially fatal rebleeding. Standard TIPS procedure was not feasible due to altered anatomy of the liver resulting from right hemidiaphragmatic paresis. Computed Tomography (CT) fluoroscopic guidance was utilized for direct percutaneous puncture of the left hepatic and left portal vein with subsequent guidewire snaring to perform portosystemic shunting via femoral access. Since the procedure, no recurrent variceal bleeding was reported and the shunt remained patent at a 3-year follow-up. Although stent fracture with fragment migration was observed.

CONCLUSIONS

Significant variation in liver anatomy does not preclude the creation of nonsurgical portosystemic shunt. In these cases, combined percutaneous and endovascular technique may be utilized.