In the laboratory findings at CICU admission, ALC [1.13 (0.7–1.8) x103/μL vs. 1.62 (1.1–2.3) x103/μL; p < 0.001], albumin [3.2 (2.8–3.6) g/dL vs. 3.9 (3.4–4.2) g/dL; p < 0.001], and total cholesterol [119.5 (94.0–152.0) mg/dL vs. 150.0 (121.5–183.0) mg/dL; p < 0.001] were significantly lower in the delirium group. This evidence concerns the gene ALB and delirium.