Accidental guide wire migration and late percutaneous externalization after central venous catheterization.

A 70-year-old man was admitted to the emergency department with recent spontaneous externalization of a metallic device from his right inner thigh. He had been experiencing mild local pain for 2 weeks and had a recent hospitalization due to cardiogenic hemodynamic instability, requiring a central venous catheter placement in his right internal jugular vein 3 months earlier. Doppler ultrasound confirmed the intravascular foreign body hypothesis as a guidewire was identified inside the right femoral vein, associated with femoropopliteal venous thrombosis. The guidewire was successfully removed percutaneously through simple manual traction guided by radioscopy. The patient was discharged the following day on oral anticoagulation with rivaroxaban. On outpatient follow-up 4 weeks post discharge, he had no complaints in the right lower limb except for slight swelling. Central venous catheterization is a common invasive procedure that, although unquestionably safe and well stablished in medical practice, can lead to serious complications when performed without proper technique.

Evaluation of endolaser thermoablation of the small saphenous vein under local anesthesia.

BACKGROUND: The small saphenous vein (SSV) is affected in 15% of chronic venous insufficiency (CVI) cases. Conventional surgery is the standard technique for treatment of SSV insufficiency, but sural nerve injury is a complication of great concern. Endovenous laser ablation is a surgical technique for treatment of CVI that is considered likely to reduce morbidity and mortality. OBJECTIVES: To evaluate patients with CVI undergoing endovenous laser ablation of the SSV at least 30 days after the procedure. METHODS: We analyzed 54 lower extremities in 46 patients scheduled for 1470-nm endovenous laser ablation under local anesthesia to treat CVI in a tertiary hospital. Patients were evaluated preoperatively, intraoperatively, and postoperatively over 30 days with clinical examination, physical examination, and ultrasound. RESULTS: In the 54 lower extremities treated, there was a significant difference (p < 0.003) in terms of reduction in the diameter of treated veins (6.37 mm preoperatively and 5.15 mm on the 30th postoperative day) and improvement in the venous clinical severity score (VCSS) (means of 8.02 preoperative and 6.11 on the 30th postoperative day) (95%CI, 5.01-7.21) (p < 0.02). Postoperative complications such as paresthesia and phlebitis were present and diagnosed in 5 and 3 patients, respectively, but did not affect their quality of life or routine activities. CONCLUSIONS: Intravenous laser ablation of the SSV proved to be safe and effective for reducing clinical symptoms and improving quality of life.

Endovascular treatment of subclavian artery injury with a complex post-traumatic fistula: Case report.

BACKGROUND: Endovascular treatment in trauma is a promising strategy to reduce perioperative morbidity and mortality. We report the case of a gunshot wound causing an initially undiagnosed subclavian artery injury, with delayed progression to a complex, difficult-to-manage arteriovenous (AV) fistula. Placement of an encapsulated endovascular stent graft resolved the primary lesion, but persistent cervical arteriovenous communications were only repaired after multiple, sequential embolization procedures. REPORT: A 25-year-old male sustained a gunshot wound to the right neck. Initial treatment failed to identify any vascular injury, and the patient was discharged. Three weeks later, he presented to our facility with headache and a palpable right-sided cervical thrill. Arteriography showed contrast extravasation from the right subclavian artery and an AV fistula with the ipsilateral internal jugular vein. The arterial injury was repaired with an encapsulated stent graft, but residual contrast leak persisted on follow-up angiography. Three months after the first intervention, cervical thrill was still present; a right vertebral-right internal jugular AV fistula was identified and repaired by distal coil embolization. One month later, persistent symptoms prompted repeat arteriography, which again identified contrast extravasation, now involving the thyrocervical trunk. Selective thyrocervical embolization was ultimately successful, with resolution of symptoms and no further evidence of contrast leak. CONCLUSION: Delayed management of neck trauma can be challenging due to neovascularization, which hinders open repair in this delicate region. Post-traumatic arteriovenous fistulas are thus a particularly fearsome complication, and can be very difficult to approach; as in our patient, multiple interventions may be required. This case highlights the importance of detecting vascular trauma as early as possible, as a delay in diagnosis can hinder treatment and eventuate challenging late complications. Further studies are needed to demonstrate the long-term benefits of endovascular management of complex vascular injuries of the neck region.

Avaliação da termoablação com endolaser da veia safena parva com anestesia local / Evaluation of endolaser thermoablation of the small saphenous vein under local anesthesia

Resumo Contexto Na insuficiência venosa crônica (IVC), a veia safena parva (VSP) é afetada em 15% dos casos. A cirurgia convencional é a técnica padrão para o tratamento da insuficiência da VSP, sendo a lesão no nervo sural uma complicação bastante temida. O tratamento de termoablação com endolaser tende a ser um método cirúrgico que diminui complicações da terapia cirúrgica da IVC. Objetivos Avaliar os pacientes com IVC submetidos à terapia por endolaser da VSP ao menos 30 dias após o procedimento. Métodos Foram analisados 54 membros inferiores de 46 pacientes submetidos à terapia por endolaser 1470 nm, sob anestesia local, para o tratamento da IVC em um hospital terciário. Os pacientes foram avaliados no período pré-operatório, intraoperatório e pós-operatório de 30 dias, através da clínica, exame físico e achados ecográficos. Resultados Nos 54 membros inferiores submetidos ao tratamento, comparando-se o período pré-operatório e o 30º dia pós-operatório, houve diferença significativa (p < 0,003) na redução do diâmetro da VSP tratada (6,37 mm pré-operatório e 5,15 mm no 30º dia pós-operatório) (IC95% 4,58-5,72) e na melhora do escore de gravidade clínica venosa (VCSS) (média de 8,02 pré-operatório e 6,11 no 30º dia pós-operatório) (IC95% 5,01-7,21) (p < 0,02). Complicações pós-operatórias, como parestesia e flebite, estiveram presentes e foram diagnosticadas em cinco e três pacientes, respectivamente, sem significar alteração na qualidade de vida e nas atividades de rotina. Conclusões A técnica de termoablação com laser da VSP mostrou-se segura e eficaz na redução dos sintomas clínicos e na melhora da qualidade de vida.

Abstract Background The small saphenous vein (SSV) is affected in 15% of chronic venous insufficiency (CVI) cases. Conventional surgery is the standard technique for treatment of SSV insufficiency, but sural nerve injury is a complication of great concern. Endovenous laser ablation is a surgical technique for treatment of CVI that is considered likely to reduce morbidity and mortality. Objectives To evaluate patients with CVI undergoing endovenous laser ablation of the SSV at least 30 days after the procedure. Methods We analyzed 54 lower extremities in 46 patients scheduled for 1470-nm endovenous laser ablation under local anesthesia to treat CVI in a tertiary hospital. Patients were evaluated preoperatively, intraoperatively, and postoperatively over 30 days with clinical examination, physical examination, and ultrasound. Results In the 54 lower extremities treated, there was a significant difference (p < 0.003) in terms of reduction in the diameter of treated veins (6.37 mm preoperatively and 5.15 mm on the 30th postoperative day) and improvement in the venous clinical severity score (VCSS) (means of 8.02 preoperative and 6.11 on the 30th postoperative day) (95%CI, 5.01—7.21) (p < 0.02). Postoperative complications such as paresthesia and phlebitis were present and diagnosed in 5 and 3 patients, respectively, but did not affect their quality of life or routine activities. Conclusions Intravenous laser ablation of the SSV proved to be safe and effective for reducing clinical symptoms and improving quality of life.