Subclavian Vein an Unusual Access for the Removal of Intravascular Foreign Bodies Joaquim Mauricio da Motta Leal Filho,1 Francisco Cesar Carnevale,1 and ao Paulo, Brazil Giovanni Guido Cerri,2 S~
Catheter migration or catheter fracture and consequent migration of a fragment is a rare complication that occurs in 1% of the patients. Despite the low incidence, embolization may cause severe and potentially fatal complications, with the mortality rates varying between 24 and 60%. The gold standard treatment for this condition is the extraction of the fragmented catheter by the intravascular percutaneous route, through the common femoral vein. If it is not available, the extraction procedure must be performed through an alternative access. This article describes a fully successful removal of a fragmented catheter by percutaneous intravascular access obtained through the right subclavian vein.
The use of totally implantable central venous catheters (Port-a-Cath; Bard, Salt Lake City, UT) for the administration of chemotherapies and parenteral nutrition is more and more common in the medical practice. These devices are composed of a reservoir (port) through which the substances are injected and a polyurethane or radiopaque silicone catheter. The main complications caused by the Port-a-Cath are catheter thrombosis or venous thrombosis and infection. Catheter migration or catheter fracture and consequent migration of a fragment is a rare complication that occurs in 1% of the patients.1-4 Despite the low incidence, embolization may cause severe and potentially fatal complications such as thromboembolia,5,6 bacterial endocarditis,7 sepsis, myocardial lesions, and cardiac arrhythmias,8 and the mortality rates may vary between 24 and 60%.9 Therefore, removal of these foreign bodies is always recommended. Percutaneous intravascular removal 1
Interventional Radiology Unit, Radiology Institute, Hospital das Clinicas, University of S~ ao Paulo Medical School, S~ ao Paulo, Brazil. 2 Radiology Department, Radiology Institute, Hospital das Clinicas, University of S~ ao Paulo Medical School, S~ ao Paulo, Brazil.
Correspondence to: Joaquim Maurıcio da Motta Leal Filho, Interventional Radiology Unit, Radiology Institute, Hospital das Clinicas, University of Sao Paulo Medical School, Rua Diogo Jacome, 1030/ Apto. 121 e S~ ao Paulo e SP, Brazil e 04512-001, E-mail:
[email protected] Ann Vasc Surg 2010; 24: 826.e1-826.e4 DOI: 10.1016/j.avsg.2010.02.031 Ó Annals of Vascular Surgery Inc. Published online: May 14, 2010
of foreign bodies through a common femoral access is the gold standard treatment for the referred condition. It is a minimally invasive, relatively simple, safe procedure, with low complication rates, compared with conventional surgical treatment.10-16 In the absence of this venous access, removal must be performed using an alternative route.17 The present article describes the removal of a fragmented catheter by percutaneous intravascular access obtained through the right subclavian vein.
CASE REPORT A 56-year-old woman diagnosed with Hodgkin’s lymphoma received chemotherapy through the implantable venous access port, the Port-A-Cath, inserted in the right subclavian vein. After a frustrated attempt to deliver drug solution through the catheter, chest x-ray revealed fracture and embolization of a catheter fragment (Fig. 1). The first choice of access route was the jugular veins, because the patient had a history of deep venous thrombosis of the lower limbs and an inferior vena cava filter, which made the access through the femoral veins impossible. Attempt to access the site through the right and left internal jugular veins was unsuccessful because these veins were also affected by thrombosis. For the patient to continue with her previous treatment, she should be referred to surgery for removal of the fragmented catheter and implantation of a new Port-a-Cath device, since peripheral venous access was not possible. We chose the same access route previously used, that is, the right subclavian vein, for the extraction of the foreign body and implantation of the new catheter. 826.e1
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Fig. 1. Simple chest x-ray showing fractured Port-a-Cath and catheter embolization. Technique Puncture of the right subclavian vein using Seldinger technique (Fig. 2), implantation of the 8-French sheath, passing of the guide wire into the distal end of the catheter located in the right ventricle, and placement of the loop-snare guiding catheter. Parallel to the guiding catheter, 260-cm hydrophilic guide wire was simultaneously introduced through the 8-French sheath, and this one was placed in the inferior vena cava, ensuring subclavian venous access (Fig. 3). The loop snare was introduced through the guiding catheter until the distal end, the catheter was grasped and the whole set was removed, including the 8-French sheath, but maintaining the access to the right subclavian vein through the guide wire located in the inferior vena cava (Fig. 4). Then, a new Port-a-Cath was implanted (Fig. 5).
DISCUSSION Embolization of intravascular catheters, by fracture or migration, is a rare condition that occurs in 1% of the cases,1-4 however, if left untreated, it may cause serious complications and even death, with a mortality rate between 24 and 60%.9 Because of these high mortality rates, extraction of foreign bodies is strongly recommended even in asymptomatic patients. The venous access recommended for the removal of intravascular foreign bodies is the common femoral vein,10 preferably the right one. The advantages of this approach include easier handling, the patient feels more comfortable, puncture is facilitated by the blood vessel diameter and because the vessel is situated close to the surface of the skin,
Fig. 2. Puncture of the right subclavian vein.
presence of posterior bone protection that allows its fixation during puncture and application of effective pressure after catheter removal, access to the main sites of migration of intravascular foreign bodies, and a vessel diameter that allows for the insertion of materials of various sizes. Depending on the degree of difficulty of the procedure, one femoral vein can be used, or both of them simultaneously, although it is always preferable to use only one. This venous access is always available except in the case of deep venous thrombosis of the lower limbs and/or the presence of a definitive inferior vena cava filter. The second choice of venous access route are the jugular veins, which present the following advantages: puncture facilitated by the blood vessel diameter, access to the main sites of migration of intravascular foreign bodies, vessel diameter that allows for the insertion of materials of various sizes, and application of effective pressure to the puncture site.18,19 In the absence of these four access routes, alternative routes such as dissection or puncture of basilic or cephalic veins, dissection of axillary veins, or else puncture of subclavian veins can be used. Despite the easy access to basilic and cephalic veins, these vessels cannot be used for the insertion of large devices. Besides, the patient has been fighting cancer for around 3 years, and, thus, there were clots in the veins of her arms and forearms (phlebitis). Some advantages of the subclavian veins
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Fig. 3. A Implantation of the 8-French sheath in the right subclavian vein. B Distal end of catheter was grasped with the loop snare. Hydrophilic guide wire parallel to the loop snare with its distal end located in the inferior vena cava.
Fig. 4. A Removal of the whole set, but maintaining the hydrophilic guide wire in the inferior vena cava (maintenance of subclavian venous access). B Fragment of catheter.
include easier handling, puncture facilitated by the blood vessel diameter, access to the main sites of migration of intravascular foreign bodies, and a vessel diameter that allows for the insertion of materials of various sizes. In the case described
earlier, we were aware of the permeability of the right subclavian vein, and of the need for implantation of a new Port-a-Cath, and, consequently, this access was chosen. However, it has some disadvantages such as difficulties in applying effective
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Fig. 5. Implantation of another Port-a-Cath through the right subclavian vein.
pressure after catheter removal, hematomas, pneumothorax, and hemothorax.17
CONCLUSION Percutaneous intravascular removal of foreign bodies is considered a gold standard treatment because it is a minimally invasive, relatively simple, safe procedure, with low complication rates compared with conventional surgical treatment. Vascular access should always be made through the femoral veins. If this is not possible, other alternative routes can be used. Subclavian veins are a possible alternative for foreign body retrieval, but should be used in selected or exceptional cases only. REFERENCES 1. Smouse HB, Fox PF, Brady TM, Swischuk JL, Castan˜eda F, Pham MT. Intravascular foreign body removal. Semin Intervent Radiol 2000;17:201-212.
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