Peripheral Artery Disease and Continuous Flow Left Ventricle Assist Device: An Engaging Complement Analysis May Help to Guide Treatment

Area of Science:

• Cardiology
• Biomedical Engineering
• Medical Imaging

Background:

• Advanced heart failure (HF) patients often benefit from continuous flow left ventricle assist devices (CF-LVAD), improving survival and quality of life.
• Peripheral artery disease (PAD) is a common comorbidity in HF patients due to shared risk factors like atherosclerosis.
• Diagnosing PAD in CF-LVAD patients presents challenges due to altered hemodynamics caused by the device.

Observation:

• A 53-year-old male with ischemic cardiomyopathy, supported by a HeartWare HVAD as a bridge to transplant, developed symptoms suggestive of PAD post-implantation.
• The artificial physiology of the LVAD significantly alters waveform morphology and velocity, complicating standard PAD diagnostic methods.

Findings:

• Computational flow analysis was employed to study PAD-related hemodynamic disturbances in a CF-LVAD patient.
• Flow simulations provided enhanced information beyond clinical imaging data, aiding in the assessment of hemodynamic alterations.

Implications:

• Computational flow analysis may offer a valuable tool for investigating hemodynamic disturbances in patients with CF-LVAD.
• This approach could improve the diagnostic accuracy of PAD in this complex patient population.
• Further research into flow simulations can refine risk assessment for hemodynamic complications after LVAD implantation.