Migración de fragmentos de catéteres percutáneos en paciente pediátrico / (Migration of fragmented percutaneous catheter in pediatric patient)

ResumenLos pacientes hemato-oncológicos pediátricos son una población usualmente expuesta a catéteres percutáneos, debido a los tratamientos quimioterapéuticos de larga duración. Entre las complicaciones raras se encuentra la migración de fragmentos del catéter. A pesar de que se reportan diferentes técnicas quirúrgicas para remover los fragmentos, en algunas ocasiones el riesgo de remoción supera el beneficio del paciente. En este artículo se reporta el caso de una niña de 6 años, con diagnóstico de leucemia linfocítica aguda, en quien se produjo migración de un fragmento del catéter percutáneo. La paciente cursó asintomática y se manejó conservadoramente. En la actualidad tiene 1 año y 5 meses desde el diagnóstico de la migración del catéter y se encuentra sin clínica alguna.

AbstractThe pediatric hemato-oncological patients are usually exposed to have intravenous percutaneous catheters because of their long-term chemotherapy treatment. One of the unusual complications of the percutaneous catheters is to fragment and one of the fragments to migrate. Although, there are different surgical techniques for the removal of the fragments, sometimes the risk is larger than the benefit for the patient. This article reports the case of a 6 year old pediatric patient with acute lymphoblastic leukemia who suffered the migration of a fragment of a percutaneous device, that was treated conservatively without any complication. At the moment, the patient has 1 year and 5 months from her diagnosis of catheter migration and is completely asymptomatic.

Percutaneous mechanical thrombectomy for the treatment of acute massive pulmonary embolism: its preliminary clinical application / 介入放射学杂志

Objective Acute massive pulmonary embolism(PE)is a clinical emergency requiring rapid and supportive measures.With the development of interventional technology and devices,percutaneous mechanical thrombectomy(PMT)is considered to be an alternative for the treatment of PE,though there is still relative lack of clinical experience.The purpose of this study is to evaluate the clinical efficacy and safety of PMT in the management of acute massive PE.Methods The clinical data of massive PE patients treated with interventional methods were collected and analyzed in a retrospective way.From Jan.2003 to Jan.2008,6 patients(5 males and one female,with a mean age of 62 years)with acute massive PE,which was initially diagnosed by computed tomography and finally confirmed by pulmonary angiography,were treated with percutaneous catheter fragmentation and/or Straub Rotarex thrombectomy device.Results The improvement of clinical status and restoration of blood flow in the main branches of pulmonary artery were obtained in all patients.Oxygen saturation(SaO2)increased from preoperative(79.5±5.3)%to postoporative (92.8±3.4)%,with P＜0.01.Partial arterial oxygen pressure(PaO2)increased from preoperative(58.0±9.8)mmHg to postoperative(88.7±4.1)mmHg(P＜0.01).After PMT treatment,the mean pulmonary artery pressure(PAP)decreased from preoperative(40.8±7.8)mmHg to postoperative(29.8±8.0)mmHg (P＜0.01).Miller index decreased from preoperative 0.54±0.03 to postoperative 0.18±0.07(P＜0.01).During a clinical follow-up period ranged from 1 to 5 years,four patients showed no recurrence of PE,the other two patients lost touch with the authors.Conclusion The preliminary experience in onr series suggests that PMT is an easy,effective and safe therapy in the clinical management of acute massive PE,especially when thrombolysis is contraindicated.