Biomedical papers, 2016 (vol. 160), issue 1

Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub. 2016, 160(1):130-135 | 10.5507/bp.2015.034

Monitoring of allograft vasculopathy by intravascular ultrasound one month and one year after heart transplantation: A single center study

Helena Bedanovaa,b, Marek Orbana,b, Martin Tretinaa, Petr Filaa,b, Vladimir Horvatha,b, Jan Krejcib, Petr Nemeca,b
a Center of Cardiovascular and Transplant Surgery, Brno, Czech Republic
b International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic

Aims: The aim of this trial was to use intravascular ultrasound (IVUS) to determine whether cardiac allograft vasculopathy (CAV) starts progressing during the first year after heart transplantation (HTx).

Methods: We retrospectively analyzed 51 patients (11 women) who received heart transplants in our center between January 2010 and September 2013 and underwent coronary angiography as well as IVUS examination one month and one year after HTx. Patients with proven calcification and fibrotic plates in the IVUS examination one month after HTx constituted a group with defined donor-transmitted atherosclerosis (DTA). In patients without DTA, measurements of maximal intimal thickening (MIT) were made in two predetermined locations.

Results: Eight of the 51 patients had DTA, while 43 did not. These were divided based on maximal intimal thickness (MIT) into a group with MIT < 0.5 mm (27) and MIT ≥ 0.5 mm (16). No patient with MIT < 0.5 mm developed allograft vasculopathy within one year after HTx. CAV developed in three patients (P = 0.045) out of the 16 patients with MIT ≥ 0.5. In patients with DTA, a statistically significant deterioration in percent area stenosis (PAS) occurred in both artery sections (P = 0.01).

Conclusion: Our trial showed that CAV progresses during the first year after HTx significantly more frequently in patients with DTA and MIT ≥ 0.5 mm. It is essential in these patients to implement an IVUS control examination one year after transplantation. The results can lead to a change in treatment strategy to prevent further progress of the disease.

Keywords: heart transplantation, allograft vasculopathy, IVUS examination

Received: February 8, 2015; Accepted: July 3, 2015; Prepublished online: July 15, 2015; Published: March 30, 2016


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