Impact of left ventricular dysfunction on renal transplant survival: study of paired kidneys from the same donor.

INTRODUCTION

A significant number of patients with chronic kidney disease (CKD) have cardiac abnormalities, and left ventricular systolic dysfunction (LVSD) is a common manifestation. Our hypothesis is that a decrease in the left ventricular ejection fraction (LVEF) at the time of kidney transplantation is a factor of poor prognosis associated with poor graft evolution.

METHODS AND

RESULTS

A total of 954 kidney transplantations were performed in our center between 2005 and 2012. Nineteen (2%) of these patients had been diagnosed with left ventricular dysfunction that was defined by the presence of LVEF <50% on echocardiography. This group of patients was compared with a control group of recipients without LVSD who had received the contralateral kidney from the same donor. During a mean follow-up of 52 ± 14 months, it was observed that the patients with LVSD had a higher incidence of delayed graft function (DGF) as well as a significantly longer renal function recovery period than in the control group until they became dialysis free (19.8 [range, 0-90] vs 12 [range, 0-36] days; P = .01). Furthermore, graft function achieved by the LVSD group was worse during the evolution (serum creatinine 2.3 ± 1.9 vs 1.4 ± 0.5 mg/dL; P = .01). Patients with LVSD showed worse kidney graft survival at the end of the follow-up when compared with the control group (79% vs 100%; P = .03).

CONCLUSIONS

Systolic dysfunction of the renal transplant recipient is associated with greater delay in graft function and worse graft survival with poorer renal function.