RESUMEN
OBJECTIVE: To present results of a registry of a novel vascular access device. BACKGROUND: Arterial access has been largely unchanged for 60 years. The Arstasis device creates a novel shallow-angle arterial access designed to facilitate hemostasis without use of a vascular closure device (VCD) or implantation of a foreign body for closure. This is the first publication to report the outcomes of Arstasis access. METHODS: Patients (n = 346) underwent routine diagnostic cardiac catheterization (Dx) at 8 sites in the United States. Patients were assessed for device success, time to hemostasis (TTH), early sit up, time to ambulation (TTA), time-to-discharge-eligibility (TTDe) as well as safety; 249 patients had Dx only, 97 crossed over to PCI. RESULTS: Device deployment was successful in 97%; the other 3% converted to routine access. Mean TTH and TTA for Dx were 4.0 ± 2.5 minutes and 1.5 ± 1.2 hours, respectively; for PCI it was 6.9 ± 5.1 minutes and 3.2 ± 3.3 hours. A subset of 245 patients (72.9%) sat up within 30 minutes after hemostasis; early sit-up was successful in all but 1 (99.6%). TTDe for Dx was 2.7 ± 1.6 hours. There were no major access-site related complications; minor complications were primarily subclinical hematomas in 1.2%. CONCLUSIONS: Arstasis access is associated with short TTH and TTA, early sit up after sheath pull, and accelerated TTDe, achieved without use of VCDs or implantation of a foreign body, with high success and minimal complication rates.
Asunto(s)
Cateterismo Cardíaco/instrumentación , Arteria Femoral , Hematoma/prevención & control , Técnicas Hemostáticas/instrumentación , Dispositivos de Acceso Vascular , Anciano , Anciano de 80 o más Años , Cateterismo Cardíaco/efectos adversos , Cateterismo Cardíaco/métodos , Diseño de Equipo , Femenino , Hematoma/etiología , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Punciones/instrumentación , Sistema de Registros , Caminata , Adulto JovenRESUMEN
BACKGROUND: Peripheral artery disease (PAD) is a prevalent cardiovascular disorder that results in tissue ischemia which can progress to critical limb ischemia. Restoration of tissue perfusion in the setting of chronic ischemia through stimulation of arteriogenesis and angiogenesis remains a key therapeutic target for PAD. However, experimental therapeutics, including growth factor and gene therapy, have had little clinical success indicating the need for a better understanding of molecular pathways required for therapeutic angiogenesis. METHODS AND RESULTS: Here we report that phosphodiesterase-5 inhibition by sildenafil significantly increases vascular perfusion, tissue blood flow, and vascular density during chronic ischemia of the mouse hind limb. Importantly, sildenafil therapy did not alter any of these parameters in nonischemic limbs. Sildenafil increased tissue cGMP levels independently of increases in nitric oxide production, and sildenafil therapy stimulated angiogenesis in ischemic limbs of eNOS-/- and iNOS-/- mice. Lastly, sildenafil-mediated angiogenic activity was blocked by inhibition of protein kinase G using the PKG antagonist DT-3. CONCLUSIONS: These data demonstrate that sildenafil therapy results in increased angiogenic activity through a PKG-dependent pathway that is independent of nitric oxide production or NOS activity and identify the angiogenic therapeutic potential of sildenafil for critical limb ischemia.