Bridge to Decision Using the Levitronix CentriMag Short-term
Ventricular Assist Device
Fabio De Robertis, MD, Paula Rogers, RGN, Mohammed Amrani, FRCS, PhD, Mario Petrou, FRCS, PhD,
John R. Pepper, FRCS, Toufan Bahrami, FRCS, Gilles D. Dreyfus, FRCS, Asghar Khaghani, FRCS,
and Emma J. Birks, MRCP, PhD
Background: Ventricular assist devices are effective in severe end-stage cardiac failure but outcomes remain poor
in critically ill patients. Cheaper and less invasive short-term devices have been used in this setting.
We report our experience with the Levitronix CentriMag short-term ventricular assist device as a
potential bridge prior to deciding whether a more expensive device should be used or whether
transplantation should be undertaken.
Methods: Since August 2003, 16 moribund patients (14 males; age 32.7 14.9 [range 16 to 62] years) have
been supported with the CentriMag device as a “bridge to decision.” Twelve patients had an
intra-aortic balloon pump pre-operatively, 13 had multi-organ failure, 11 had septic shock, and in 5
patients the neurologic status was uncertain at the time of insertion of the device.
Results: Operative mortality was 18.7% (3 patients). Seven patients (43.7%) were reoperated for bleeding.
The mean support duration was 46.9 32.3 (range 6 to 111) days. There were 2 late deaths during
Levitronix utilization. Follow-up was 12.8 12.5 (range 0.6 to 43) months. Eleven patients (68.7%)
are currently alive and well: 2 patients recovered and had the Levitronix device explanted; 6 patients
were upgraded to a long-term device; and 3 patients were bridged directly to transplantation. The
actuarial survival at 1, 6 and 12 months was 85.7%, 64.9% and 64.9%, respectively. There were no
instances of device failure.
Conclusions: The Levitronix device is effective in rescuing critically ill “moribund” patients and can provide an
opportunity for low-cost support and optimization of their condition prior to deciding whether a
more expensive device should be placed or if transplantation should be undertaken. Better
candidate selection for further procedures can then be allowed. J Heart Lung Transplant 2008;27:
474 – 8. Copyright © 2008 by the International Society for Heart and Lung Transplantation.
Ventricular assist devices (VADs) are now very effective
in the treatment of severe end-stage cardiac failure.
1
However, despite improvements in the field of mechan-
ical circulatory support (MCS) in the last few years,
patients who present in a moribund state are difficult to
deal with because of the presence of end-stage organ
failure and the often uncertain neurologic status in
ventilated patients. In these very critically ill patients
the outcome remains poor.
2
Using short-term devices
such as the Levitronix CentriMag VAD in this setting
provides an opportunity for stabilizing the hemody-
namic state of the patients and offers a chance to
further assess their clinical condition.
3–10
We report our experience with the Levitronix
CentriMag VAD in a cohort of extremely sick patients
for whom mechanical support was used as a potential
“bridge to decision” before deciding whether a more
expensive device should be used or whether transplan-
tation should be undertaken.
METHODS
Details of the CentriMag device, its implantation tech-
nique and its clinical performance have been described
previously.
6,7
Essentially, it is a single-use extracorpo-
real centrifugal blood pump based on bearingless motor
technology. The motor generates the magnetic bearing
force that levitates the rotor in the pump housing and,
at the same time, generates the torque to produce the
unidirectional flow. After approval by the ethics com-
mittee, from August 2003 to May 2007 at our institution
we supported 55 patients with the CentriMag device.
Informed consent was obtained from all conscious
patients. In the unconscious cases, the medical team
From the Department of Transplantation and Mechanical Circulatory
Support, Royal Brompton and Harefield NHS Trust, Harefield, Mid-
dlesex, UK.
Submitted July 20, 2007; revised December 4, 2007; accepted
January 24, 2008.
Reprint requests: Emma Birks, MRCP, Royal Brompton and
Harefield NHS Trust, Harefield, Middlesex UB9 6JH, UK. Telephone:
00-44-1895-826511. Fax: 00-44-1895-826512. E-mail: e.birks@imperial.
ac.uk.
Copyright © 2008 by the International Society for Heart and Lung
Transplantation. 1053-2498/08/$–see front matter. doi:10.1016/
j.healun.2008.01.027
474