ObjectiveTo compare del Nido cardioplegia (DNC) with blood cardioplegia (BC) in
coronary artery bypass grafting (CABG) combined with mitral valve
replacement.MethodsA 3-year single-center retrospective cohort study was carried out. Subjects
who underwent CABG (up to triple bypass) combined with mitral valve
replacement were divided into DNC and BC groups. Each group had thirty
subjects.ResultsBoth groups demonstrated similar baseline characteristics, including age,
gender, cardiac/non-cardiac comorbidity, and preoperative echocardiographic
parameters. Compared with the BC group, the DNC group demonstrated
significantly lower cardioplegia volume (BC = 1130.00±194.1 mL, DNC =
884.33±156.8 mL, P=0.001), cardiopulmonary bypass
time (DNC = 110.90±12.52 min, BC = 121.70±13.57 min,
P=0.002), aortic clamp time (DNC = 91.37±11.58
min, BC = 101.37±13.87 min, P=0.004), and need for
intraoperative defibrillation (DNC = 6 events, BC = 21 events,
P=0.001). Postoperative creatine kinase-MB levels and
troponin levels were significantly lower in the DNC group than in the BC
group. Postoperative haemoglobin and haematocrit levels were significantly
higher in the DNC group than in the BC group. The intubation period (hours)
in intensive care unit (ICU) was significantly small in the BC group (DNC =
8.13±12.21, BC = 6.82±1.57, P=0.037);
however, ICU stay, total hospital stay, and postoperative complication rates
were not significantly different between them. At pre-discharge
echocardiography, the DNC group demonstrated significantly higher ejection
fraction rates than the BC group (47.79±5.50 and 45.72±5.86,
respectively, P=0.005).ConclusionDNC presented better intraoperative and postoperative parameters and it is an
effective and safe alternative to BC for CABG combined with mitral valve
replacement.