Peripheral Neural Mechanisms of Exercise Intolerance in Heart Failure

Overview

Información sobre este estudio

The goal of this project is to study mechano- and- metaboreceptor function (mechanoreflex and metaboreflex, respectively) associated with exercise in HF. We will measure blood pressure, systemic vascular resistance (SVR), and the slope of the ventilatory equivalent to carbon dioxide output ratio (VE/VCO2) slope responses to stimulation of these pathways. We also aim to determine the influence of changes in blood biochemistry and intra-venous pressure on mechano- and- metaboreflex activation.

Elegibilidad para la participación

Los requisitos de elegibilidad de los participantes incluyen la edad, el sexo, el tipo y el estadio de la enfermedad, y los problemas de salud o tratamientos previos. Las pautas difieren de un estudio a otro e identifican quiénes pueden o no pueden participar. No hay garantía de que cada persona elegible que desee participar en un ensayo se inscribirá. Comunícate con el equipo del estudio para analizar la elegibilidad del estudio y la posible participación.

Inclusion Criteria:

  • HF Patients:
    • >21 yrs
    • no history of dangerous arrhythmia’s
    • not be pacemaker dependent
    • have a body mass index ≤35kg/m2
    • currently be non-smokers with <15 pack year history
    • be able to exercise (i.e. without orthopedic limitations or musculoskeletal disorders)
  • Control participants:
    • Will be adults ≥21 years of age
    • Absence of a history of HF, pulmonary, neurologic, orthopaedic, or other diseases affecting the neuromuscular system
    • BMI ≤35kg/m2
    • current non-smokers with smoking history <15 pack years,
    • able to engage in exercise (i.e. without orthopedic limitations or musculoskeletal disorders)

Exclusion Criteria for All Participants:

  • History of dangerous arrhythmias
  • Bbody mass index >35 kg/m2
  • Current smokers and/or smoking history >15 pack years
  • Pregnant women
  • Individuals who are not able to engage in exercise (i.e., with orthopedic or musculoskeletal disorders/limitations
  • For individuals agreeing to undergo dual energy x-ray absorptiometry (DEXA) scanning for measurement of body composition as part of their study visit
    • Recently administered gastrointestinal contrast or radionuclides
    • Implants, hardware, devices, or other foreign material in the body
    • Severe degenerative changes or fracture deformity in measurement areas
    • Inability to attain correct position and/or remain motionless for the measurement period.

 

Sedes participantes de Mayo Clinic

Los estatus de los estudios cambian con frecuencia. Comunícate con el equipo del estudio para obtener la información más actualizada acerca de la posibilidad de participar.

Sede de Mayo Clinic Estatus

Rochester, Minn.

Investigador principal de Mayo Clinic

Thomas Olson, M.S., Ph.D.

Cerrado para la inscripción

More information

Publicaciones

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CLS-20306558

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