ALB and acute kidney injury: Some of the comorbid conditions that have been analyzed previously include anemia, hypoxia, cardiac disease, chronic obstructive pulmonary disease, new-onset electrolyte imbalance, renal failure, vitamin D deficiency, history of atrial fibrillation, prior stroke/transient ischemic attack, history of neurologic comorbidity, peripheral artery disease, hypertension, prior cognitive impairment, history of carotid artery disease, development of acute kidney injury after surgical procedure, obstructive sleep apnea, sleep disorders, and lower serum level of albumin [5-10].