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Ren Fail. 2018 Nov;40(1):201-208. doi: 10.1080/0886022X.2018.1455588.

Usefulness of pretransplant aortic arch calcification evaluation for kidney transplant outcome prediction in one year follow-up.

Author information

1
a Clinic of Gastroneterology, Nephrourology and Abdominal Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University , Vilnius , Lithuania.
2
b Faculty of Medicine , Vilnius University , Vilnius , Lithuania.
3
c Centre of Nephrology, Vilnius University Hospital Santaros Clinics , Vilnius , Lithuania.
4
d Centre of Radiology and Nuclear Medicine , Vilnius University Hospital Santaros Clinics , Vilnius , Lithuania.

Abstract

Vascular calcification (VC) is linked to post-transplant cardiovascular events and hypercalcemia which may influence kidney graft function in the long term. We aimed to evaluate whether pretransplant aortic arch calcification (AoAC) can predict post-transplant cardiovascular or cerebrovascular events (CVEs), and to assess its association with post-transplant plasma calcium levels and renal function in one-year follow-up. Our single-center observational prospective study enrolled 37 kidney transplant recipients (KTR) without previous history of vascular events. Two radiologists evaluated pretransplant AoAC on chest X-ray as suggested by Ogawa et al. in 2009. Cohen's kappa coefficient was 0.71. The mismatching results were repeatedly reviewed and resulted in consensus. Carotid-femoral (cfPWV) and carotid-radial pulse wave velocity (crPWV) was measured using applanation tonometry before and one year after transplantation. Patient clinical, biochemical data, and cardiovascular/CVE rate were monitored within 1 year. We found out that eGFR1year correlated with eGFRdischarge and calcium based on hospital discharge data (β = 0.563, p = .004 and β = 51.360, p = .026, respectively). Multivariate linear regression revealed that donor age, donor gender, and recipient eGFRdischarge (R-squared 0.65, p = .002) better predict eGFR1year than AoAC combined with recipient eGFRdischarge (R-squared 0.35, p = .006). During 1-year follow-up, four (10.81%) patients experienced cardiovascular events, which were predicted by PWV ratio (HR 7.549, p = .045), but not related to AoAC score (HR 1.044, p = .158). In conclusion, KTR without previous vascular events have quite low cardiovascular/CVE rate within 1-year follow-up. VC evaluated as AoAC on pretransplant chest X-ray together with recipient eGFRdischarge could be related to kidney function in one-year follow-up.

KEYWORDS:

Kidney transplantation; aortic arch calcification; aortic stiffness; cardiovascular events; kidney graft function

PMID:
29619867
PMCID:
PMC6014335
DOI:
10.1080/0886022X.2018.1455588
[Indexed for MEDLINE]
Free PMC Article

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