经皮主动脉瓣植入术——使用LotusTM可复位装置的经验

Vinicius Esteves , Julio F. Marchini , Guilherme Bernardi , Marden A. Tebet , Fernando Bernardi , Sérgio Kreimer , Paulo Prates , José Mariani Jr. , Rogério Sarmento-Leite , Luiz Alberto Mattos , Eberhard Grube , Pedro A. Lemos
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引用次数: 0

摘要

背景第二代LotusTM经导管主动脉瓣旨在为介入心脏病专家在手术过程中完全控制其释放。这项研究介绍了在巴西接受这种假体治疗的患者的初步经验和住院结果。方法这项观察性和回顾性研究包括在七个中心接受治疗的有症状的严重主动脉瓣狭窄患者,这些患者被认为是外科手术的高危人群。结果31例患者使用该装置,女性61.3%,年龄82.9±6.9岁,STS评分6.5±4.1%。主动脉瓣面积0.73±0.18cm2,平均梯度51.7±13.9mmHg。所有手术均采用经股通路,65%的病例需要预扩张。手术成功率为96.7%,无需手术干预的血管并发症,也无脑卒中病例。术后平均梯度为10.5±5.8毫米汞柱;没有观察到中度至重度主动脉瓣反流的病例。永久性起搏器植入率为38.7%,平均住院时间为8.5±4.8天。结论在初次使用LotusTM主动脉瓣的经验中,住院结果证明了该装置的安全性和有效性;未观察到明显主动脉瓣反流的病例。引言LotusTM第二代经导管主动脉瓣的设计目的是在手术过程中为干预者提供对其释放的完全控制。这项研究介绍了在巴西接受这种假体治疗的患者的初步经验和住院结果。方法回顾性观察登记,包括在七个中心接受治疗的有症状的严重主动脉瓣狭窄患者,这些患者被认为是高手术风险患者。结果31例患者接受了该装置,61.3%为女性,年龄82.9±6.9岁,STS评分为6.5±4.1%。主动脉瓣面积为0.73±0.18cm2,平均梯度为51.7±13.9mmHg。所有手术均通过经股途径进行,65%的病例需要预扩张。手术成功率为96.7%。没有需要手术干预的血管并发症,也没有中风病例。术后平均梯度为10.5±5.8毫米汞柱,未观察到中度/重要主动脉瓣反流。最终起搏器植入率为38.7%,住院时间为8.5±4.8天。结论在Lotus主动脉瓣植入术的最初经验中,医院的结果证明了该装置的安全性和有效性,此外没有相关的主动脉瓣反流。
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Percutaneous aortic valve implantation – an experience with the LotusTM repositionable device

Background

The second-generation LotusTM transcatheter aortic valve was designed to provide the interventional cardiologist with complete control of its release during the procedure. This study presents the initial experience and in-hospital outcomes of patients treated with this prosthesis in Brazil.

Methods

This observational and retrospective study included patients with symptomatic severe aortic stenosis considered at high surgical risk, treated in seven centers.

Results

The device was used in 31 patients, 61.3% female, aged 82.9 ± 6.9 years, and with STS score of 6.5 ± 4.1%. The aortic valve area was 0.73 ± 0.18 cm2 and the mean gradient was 51.7 ± 13.9 mmHg. All procedures were performed by the transfemoral access route, and pre-dilation was necessary in 65% of cases. The success rate of the procedure was 96.7%. There were no vascular complications requiring surgical intervention nor cases of stroke. The mean gradient after the procedure was 10.5 ± 5.8 mmHg; no cases of moderate to severe aortic regurgitation were observed. The rate of permanent pacemaker implantation was 38.7%, and mean in-hospital length of stay was 8.5 ± 4.8 days.

Conclusions

In the initial experience with the use of the LotusTM aortic valve, in-hospital results demonstrated the safety and efficacy of the device; no cases of significant aortic regurgitation were observed.

Introdução

A válvula aórtica transcateter de segunda geração LotusTM foi desenhada para proporcionar ao intervencionista o controle completo de sua liberação durante o procedimento. O presente estudo apresenta a experiência inicial e os desfechos hospitalares de pacientes tratados com essa prótese no Brasil.

Métodos

Registro observacional, retrospectivo, que incluiu pacientes com estenose aórtica grave sintomáticos, considerados de alto risco cirúrgico, tratados em sete centros.

Resultados

Receberam o dispositivo 31 pacientes, sendo 61,3% do sexo feminino, com idade de 82,9 ± 6,9 anos e escore STS de 6,5 ± 4,1%. A área valvar aórtica foi de 0,73 ± 0,18 cm2 e o gradiente médio de 51,7 ± 13,9 mmHg. Todos os procedimentos foram realizados pela via transfemoral, e a pré-dilatação foi necessária em 65% dos casos. A taxa de sucesso do procedimento foi de 96,7%. Não houve complicação vascular com necessidade de intervenção cirúrgica e nem casos de acidente vascular cerebral. O gradiente médio após o procedimento foi de 10,5 ± 5,8 mmHg e não foram observadas regurgitações aórticas de graus moderado/importante. A taxa de implante de marca-passo definitivo foi de 38,7%, e a permanência hospitalar de 8,5 ± 4,8 dias.

Conclusões

Na experiência inicial com o implante da válvula aórtica LotusTM, os resultados hospitalares demostraram a segurança e a eficácia do dispositivo, além de ausência de regurgitação aórtica relevante.

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