Abstract
The incidence of postoperative liver dysfunction is high in patients undergoing double-valve replacement - mitral and aortic valve replacement (DVR). This study aims to evaluate N-acetylcysteine's free radical scavenging property (NAC) to prevent postoperative liver dysfunction in these patients, thus affecting overall clinical outcomes. A single-center, prospective, randomized, double-blinded interventional study of 60 patients divided into two groups of 30 each. Group N received prophylactic intravenous NAC, and Group C received volume-matched 5% dextrose. Data comprised demographics, liver function tests (LFT), renal function tests (RFT), vasoactive-inotropic scores (VIS) score, and C-reactive protein (CRP) at various time intervals. Postoperative parameters such as ventilation duration, length of stay in ICU (LOS-ICU), length of hospital stay (LOHS), atrial fibrillation (AF), acute kidney injury (AKI) requiring hemodialysis, and mortality were noted. Statistical analysis was performed with the Student's t-test and Chi-square test (SPSS 22 software). All postoperative LFT parameters (total bilirubin, serum glutamic oxaloacetic transaminase (SGOT), serum glutamic pyruvate transaminase (SGPT), and alkaline phosphatase (ALP)) were significantly lower (P < 0.05) at 24, 48, and 72 hours in Group N compared to Group C. RFT and VIS scores were lower in Group N; however, were not statistically significant except for Serum Creatinine at 48 hours (P = 0.0478). Ventilation duration (P = 0.0465) and LOS-ICU (P = 0.0431) were significantly lower in Group N. Other outcomes like AF, LOHS, and mortality were lower in Group N but were not statistically significant. Our study showed that prophylactic administration of NAC in patients undergoing DVR is associated with a reduction in the incidence of postoperative liver dysfunction with a positive impact on postoperative outcomes.
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