Downstream Paclitaxel Released Following Drug-Coated Balloon Inflation and Distal Limb Wound Healing in Swine.

The authors evaluated the presence of paclitaxel and healing of distal hind limb wounds created in 27 swine using biopsy punches followed by paclitaxel-coated balloon (PCB) use in the iliofemoral arteries of healthy swine. After 14 and 28 days, no differences were seen in time course, appearance, and histopathology of wound healing between the single or triple PCB and uncoated balloon treatment despite clinically relevant paclitaxel concentrations in the skin adjacent to the healing wounds. Presence of paclitaxel downstream from the PCB treatment site does not impair the wound healing response of preexisting distal cutaneous lesions in healthy swine.

Long-term performance and biocompatibility of a novel bioresorbable scaffold for peripheral arteries: A three-year pilot study in Yucatan miniswine.

AIMS: Peripheral arteries are constantly exposed to deformation (elongation, twisting, shortening, compression) making bioresorbable scaffolds (BRS) a potentially attractive therapeutic alternative to metallic stents. We conducted a long-term pilot preclinical study of a novel sirolimus-eluting BRS in peripheral arteries. METHODS AND RESULTS: Fourteen BRS were deployed in iliofemoral arteries of seven healthy Yucatan miniswine and examined with imaging, pharmacokinetic, histopathologic, and polymer degradation techniques at 0, 30, 90, 180 days, 1, 2, and 3.3 years. Angiographic late luminal loss remained unchanged at 30 and 180 days but significantly decreased from 1 to 3.3 years. optical coherence tomography (OCT) showed late increase in lumen area (1 year: 14.70 ± 3.58 mm2 , 2 years 22.04 ± 3.81 mm2 , and 3.3 years 23.45 ± 7.07 mm2 ; p < .05) primarily due to scaffold area enlargement between 1 and 3.3 years, while there was no difference in the percent area stenosis at all time points. Histologic evidence of scaffold degradation was observed starting at 2 years, with minimal inflammatory reaction. At 3.3 years, BRS struts were rarely discernible by OCT, confirmed by a nearly complete polymer degradation by molecular weight analysis. CONCLUSIONS: In this pilot study, novel sirolimus-eluting BRS showed promising acute and chronic performance in the iliofemoral arteries of Yucatan miniswine.

Modular aortic valve prosthesis for transcatheter aortic valve implantation: a novel concept with a new implantation method.

Transcatheter aortic valve implantation (TAVI) is a relatively new medical intervention. Research on dedicated TAVI devices is an exciting and dynamic field to be explored by professionals involved in technological innovation. The authors describe in this article the first engineering concept and part of the US Patent of a new valve prosthesis. Divided into two pieces to be separately implanted using a single catheter by means of an innovative technique, this device aims at reducing prosthesis and delivery catheter profile. Miniaturization of the valve and delivery system is probably the best solution to reduce the morbidity and mortality that derive from vascular complications associated with TAVI.

Artéria coronária única / Single coronary artery

Artéria coronária única é uma anomalia coronária congênita extremamente rara. Embora não seja identificada com muita frequência, por apresentar, em geral, pouca repercussão clínica, a anomalia pode ser causa de isquemia miocárdica significativa e morte súbita. Relatamos o caso de uma paciente de 80 anos de idade, atendida em fase aguda de infarto agudo do miocárdio, que teve o diagnóstico de artéria coronária única durante o cateterismo que precedeu a angioplastia coronária primária. Segue-se uma revisão da literatura, abordando a classificação dessa anomalia, sua fisiopatologia, manifestações e significância clínica, e abordagens diagnósticas e terapêuticas.

Single coronary artery is an extremely rare congenital coronary anomaly. Although it is not frequently identified, due to the lack of clinical manifestations, it may cause significantmyocardial ischemia and sudden death. We report the case of an 80-year old woman who had an acute myocardialinfarction and was found to have a single coronary artery during primary coronary angioplasty. A literature review, detailing the classification, pathophysiology, clinical profileand significance, screening and therapeutic approaches of this anomaly is provided.

Anomalous origin of the right coronary artery: diagnosis and treatment.

We report the case of a rare anomaly of the right coronary artery (RCA) arising from the left aortic sinus, having a single ostium with the left coronary artery, associated with documented episodes of inferior ischemia, in which surgical treatment with a right internal thoracic artery to RCA bypass graft and the corresponding ligation provided greater stability to the coronary blood flow and good clinical progress.

Artéria coronária direita de origem anômala: diagnóstico e tratamento / Anomalous origin of the right coronary artery: diagnosis and treatment

Relatamos caso de rara anomalia de coronária direita (CD) originando em seio aórtico esquerdo, óstio único com coronária esquerda, associado a episódios de isquemia inferior documentados, no qual o tratamento cirúrgico com "by pass" de artéria torácica interna direita para CD com respectiva ligadura proporcionou maior estabilidade ao fluxo coronário, com boa evolução clínica.

We report the case of a rare anomaly of the right coronary artery (RCA) arising from the left aortic sinus, having a single ostium with the left coronary artery, associated with documented episodes of inferior ischemia, in which surgical treatment with a right internal thoracic artery to RCA bypass graft and the corresponding ligation provided greater stability to the coronary blood flow and good clinical progress.

Anomalous origin of the right coronary artery: diagnosis and treatment.

We report the case of a rare anomaly of the right coronary artery (RCA) arising from the left aortic sinus, having a single ostium with the left coronary artery, associated with documented episodes of inferior ischemia, in which surgical treatment with a right internal thoracic artery to RCA bypass graft and the corresponding ligation provided greater stability to the coronary blood flow and good clinical progress.

Artéria coronária direita de origem anômala: diagnóstico e tratamento / Anomalous origin of the right coronary artery: diagnosis and treatment

Relatamos caso de rara anomalia de coronária direita (CD) originando em seio aórtico esquerdo, óstio único com coronária esquerda, associado a episódios de isquemia inferior documentados, no qual o tratamento cirurgico com ´by pass´ de artéria torácica interna direita para CD com respectiva ligadura proporcionou maior estabilidade ao fluxo coronario com boa evolução clínica.

We report the case of a rare anomaly of the right coronary artery (RCA) arising from the left aortic sinus, having a single ostium with the left coronary artery, associated with documented episodes of inferior ischemia, in which surgical treatment with a right internal thoracic artery to RCA bypass graft and the corresponding ligation provided greater stability to the coronary blood flow and good clinical progress.

Ruptura traqueobrônquica por trauma torácico fechado: avaliaçäo e manuseio / Tracheobronchial rupture by blunt chest trauma: evaluation and management

O Serviço de Cirurgia Torácica e Endoscopia Respiratória do Hospital Cajuru tratou cirurgicamente dois casos de ruptura completa do brônquio principal esquerdo e um caso de ruptura traqueobrônquica por trauma torácico fechado, durante um período de dois anos. a técnica utilizada para reconstruçäo brônquica foi através de anastomose término-terminal com pontos separados utiizando-se fios absorvíveis, após ressecçäo das margens estenosadas ou desbridamento das margens afetadas. Todos os pacientes obtiveram boa evoluçäo; o tempo médio para retirada dos d renos torácicos foi de 3,6 dias e o tempo médio para alta do Serviço de Cirurgia Torácica foi de 5,6 dias. Os seguimento dos pacientes foi feito através de radiografia simples de tórax em duas incidências (PA e perfil), provas de funçäo pulmonar e broncofibroscopia