Dr. Wieselthaler is one of the world´s leading experts in the use of all different forms of mechanical circulatory support in end stage heart failure patients. Dr. Wieselthaler, a graduated electrical engineer and a Professor of Surgery, was in his early career from 1998 -2011 the Director of the MCS program at the Medical University in Vienna implanting nearly all clinical available VADs. During the early period he gained extensive experience with pulsatile systems like the Novacor LVAS, as well as the Thoratecparacorporeal and implantable VADs and participated in the Arrow LionHeart CUPS Trial with a patient supported for more than 3 years on this world´s first full implantable VAD. In November1998 Dr Wieselthaler implanted the world’s first implantable, miniaturized axial flow pump, the MicroMed-DeBakey VAD into two patients, who were the first long-term patients ever without a detectable pulse.More than 80 patients followed with this device and in early 2000 he implanted the world´s first implantable, magnetically suspended centrifugal LVAD, the TERUMO DuraHeart LVAD. Already in the late 1980s, still a medical student, Dr. Wieselthaler became aware of the advantages of rotary blood pumps and organized the world´s first “International Workshops on Rotary Blood Pumps” in Austria in1988, followed by a secondin 1991. Out of these meetings the International Society for Rotary Blood Pumps, now International Society for Mechanical Circulatory Support (ISMCS) was founded in 1992 and Dr. Wieselthaler acted for many years as the Secretary General and later as President of this international society.Together with his colleague Dr. Heinrich Schima, a biomedical engineer, they have been developing and investigating miniaturized centrifugal pumps for more than 25 years in the Biomedical Laboratories of the Medical University of Vienna. With this extensive clinical expertise in rotary blood pumps he joined in late 2003 a start-up company in the USA and was deeply involved in the development of the HeartWare HVAD, a miniaturized,hydromagnatically levitated centrifugal pump, which he implanted in the worldwide first patient in March 2006 in Vienna.
In November 2011 he joined the University of California San Francisco as the Director and Surgical Chief for Cardiac Transplantation and Mechanical Circulatory Support. For the last 25 years Dr Wieselthaler performed personally more than 500 heart transplants and has extensive experience with numerous ventricular assist device (VAD) systems in over 600 clinical implants.Since years Dr. Wieselthaler is training colleagues from all parts of the world in the implantation technique and use of different, pulsatile and continuous flow ventricular assist devices and is proctoring implants all over the world. He is member of several national and international medical societies, served asmember of the Board and President of several scientific societies and was invited as speaker and chair to many national and international scientific conferences in the field of mechanical circulatory support and cardiac transplantation.