Ventricular Assist Devices (VADs)
A ventricular assist device (VAD) is a mechanical device that is used to take over the pumping function for one or both of the
heart’s ventricles. A VAD may be necessary when heart failure progresses to the point that medications and other treatments are no longer effective.
For persons with severe or end-stage heart failure, ventricular assist devices (VADs) may be required to support the heart in order to ensure an adequate cardiac output (amount of blood pumped out by the heart per minute) to meet the body’s needs.
Heart transplantation is an option for some patients with severe heart failure (HF), but during this late stage of HF, over 50 percent of persons on a waiting list for heart transplantation will die before receiving a donor heart. Organ donors are in short supply and do not meet the demand for patients waiting for heart transplant. The wait time for heart transplantation may often exceed 200 days.
Long wait times and decreased availability of donors strengthens the need to seek other methods to support the failing heart. Patients may die waiting for a transplant or important organs such as the liver and kidney may become permanently damaged before a donor heart is available. VADs have shown great promise in maintaining adequate blood circulation in cases of severe HF.
VADs may be used for the following situations:
- bridge to transplant - implantation of a VAD to support the patient with end-stage HF who is waiting for heart transplantation.
- bridge to recovery - implantation of a VAD to support the patient with potentially reversible HF. Once the heart has recovered sufficiently, the VAD may be removed.
- destination therapy - implantation of a VAD to support the patient with end-stage HF who is not a candidate for heart transplantation. A portable VAD may be used in this situation so that the patient may be discharged from the hospital and return home.
Ventricular Assist Device (VAD) Program granted Disease Specific Certification
The Joint Commission has granted UTMB Health Disease Specific Certification of the Ventricular Assist Device (VAD) Program for destination therapy, approaching the use of VAD as permanent therapy for heart failure. This approach is used for end-stage heart failure patients who are not eligible for heart transplant due to their age, other health problems or complications.
UTMB has been implanting these devices as a bridge to heart transplant with excellent outcomes.This certification is important
because it provides UTMB a certification of distinction and allows us to bring new life to our patients who have few options and might not otherwise survive. VAD reduces risk of death by 48% vs. medical therapy alone
Some VADs are designed to support the right heart alone (right
ventricular assist device, or RVAD) or both ventricles (biventricular
assist device, or BiVAD), but commonly the left ventricle (left
ventricular support device, or LVAD) is the primary point of support.
VADs are most commonly implanted during an open heart surgical procedure.
All types of VADs have similar complications
postoperatively and during prolonged therapy, including infection,
bleeding, right ventricular failure and blood clots.