RESUMEN
BACKGROUND: Previous studies suggested only the radial artery and the No-touch (NT) technique were effective in reducing graft occlusion after coronary artery bypass grafting (CABG) surgery. However, there is no randomized trial comparing these 2 graft conduits. The optimum second conduit for CABG remains undetermined. MATERIALS AND METHODS: This study is a prospective, single-center randomized clinical trial, aiming to compare the graft patency between the radial artery and the NT vein graft. All patients undergoing isolated CABG with left internal mammary artery (LIMA) plus at least 2 additional grafts will be considered eligible. About 774 cases (516 in the radial artery group and 258 in the NT vein group) will be enrolled in over 1 to 2 years. Participants will be randomized and allocated to two bypass strategies: the LIMA plus 1 radial artery and 1 conventional vein graft, or the LIMA plus 2 NT vein grafts. The primary outcome is graft occlusion at 1 year after CABG evaluated by CT angiography. The secondary outcomes include graft occlusion at 3 and 5 years and major adverse cardiac or cerebrovascular events at 1, 3, and 5 years follow-ups. DISCUSSION: This study will define whether or not the NT vein has a lower graft occlusion rate than the radial artery in short and mid-term follow-ups, and provide new evidence for the second conduit choice in CABG surgery. TRIAL REGISTRATION: ClinicalTrials.gov NCT06014047. Registered on October 15th, 2023.
Asunto(s)
Puente de Arteria Coronaria , Oclusión de Injerto Vascular , Arteria Radial , Vena Safena , Grado de Desobstrucción Vascular , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Angiografía por Tomografía Computarizada/métodos , Angiografía Coronaria/métodos , Puente de Arteria Coronaria/métodos , Puente de Arteria Coronaria/efectos adversos , Enfermedad de la Arteria Coronaria/cirugía , Oclusión de Injerto Vascular/prevención & control , Oclusión de Injerto Vascular/etiología , Arterias Mamarias/trasplante , Estudios Prospectivos , Arteria Radial/trasplante , Ensayos Clínicos Controlados Aleatorios como Asunto , Vena Safena/trasplanteRESUMEN
This study aims to determine the hemostatic effectivity and biocompatibility of a novel absorbable bone wax in comparison with a commercially available product. Eighteen small fat-tail sheep were used to simulate clinical surface bleeding of sternal injury. Hemostasis effectiveness, the degree of bone healing, micro-computed tomography, and histopathology were evaluated over a period after the application of the material to the surgically created wound. The absorbable bone wax used in the study stopped bleeding immediately and did not affect bone healing. The histopathological results also showed that there were no complications associated with the new material. The results showed that the new absorbable bone wax used in this study was effective and biocompatible.
Asunto(s)
Materiales Biocompatibles , Ensayo de Materiales , Palmitatos , Ceras , Animales , Ceras/farmacología , Ceras/química , Ovinos , Materiales Biocompatibles/farmacología , Materiales Biocompatibles/química , Palmitatos/farmacología , Huesos/efectos de los fármacos , Cicatrización de Heridas/efectos de los fármacos , Microtomografía por Rayos X , Hemostáticos/farmacología , Implantes AbsorbiblesRESUMEN
PURPOSE: This study aimed to develop a minimally invasive surgical procedure for laminar lift and posterior cervical laminoplasty via the intermuscular approach using a canine model. METHODS: Six Alaskan dogs were used for developing the surgical approach. The bilateral laminae of C3-7 were cut with an ultrasonic osteotome and fixed with bilateral plates to maintain the lamina lifting and reshape a wider spinal canal. The important structures, such as ligaments, supraspinous ligaments, interspinous ligaments, and ligamentum flavum were preserved. The therapeutic effect was evaluated by preoperative and postoperative imaging results and neck mobility. RESULTS: The surgical procedures were all successfully performed in the 6 animals. All the dogs survived well within 1 year of postoperative follow-up. The postoperative neck mobility was as good as the preoperative one. Computed tomography results showed that the anteroposterior diameter of the spinal canal was successfully enlarged and maintained well. CONCLUSIONS: The minimally invasive surgical procedure for laminar lift and posterior cervical laminoplasty via the intermuscular approach was feasible in a canine model, which might be applied in clinical practice.
Asunto(s)
Laminoplastia , Perros , Animales , Humanos , Ligamentos , Cuello , Periodo Posoperatorio , Tomografía Computarizada por Rayos XRESUMEN
Purpose: This study aimed to develop a minimally invasive surgical procedure for laminar lift and posterior cervical laminoplasty via the intermuscular approach using a canine model. Methods: Six Alaskan dogs were used for developing the surgical approach. The bilateral laminae of C3-7 were cut with an ultrasonic osteotome and fixed with bilateral plates to maintain the lamina lifting and reshape a wider spinal canal. The important structures, such as ligaments, supraspinous ligaments, interspinous ligaments, and ligamentum flavum were preserved. The therapeutic effect was evaluated by preoperative and postoperative imaging results and neck mobility. Results: The surgical procedures were all successfully performed in the 6 animals. All the dogs survived well within 1 year of postoperative follow-up. The postoperative neck mobility was as good as the preoperative one. Computed tomography results showed that the anteroposterior diameter of the spinal canal was successfully enlarged and maintained well. Conclusions: The minimally invasive surgical procedure for laminar lift and posterior cervical laminoplasty via the intermuscular approach was feasible in a canine model, which might be applied in clinical practice.