Preoperative Sleep Disorders and Postoperative Delirium in Children Undergoing Congenital Heart Surgery

Exclusion Criteria

• •Emergency surgery;
• •Combined with severe hepatic and renal dysfunction (with a diagnosis of acute or chronic renal insufficiency or requiring renal replacement therapy; with a diagnosis of acute or chronic hepatic insufficiency or requiring artificial liver treatment);
• •Combined with non-cardiac malformations (adenoidal hypertrophy, tracheobronchial stenosis and ocular disorders);
• •History of preoperative cerebral ischemia or haemorrhage;
• •Refuse to sign the informed consent form or the child has poor compliance.