# RETRACTION: Effect of Combined Etomidate‐Ketamine Anesthesia on Perioperative Electrocardiogram and Postoperative Cognitive Dysfunction of Elderly Patients with Rheumatic Heart Valve Disease Undergoing Heart Valve Replacement

**Authors:** Journal of Healthcare Engineering

PMC · DOI: 10.1155/johe/9802520 · Journal of Healthcare Engineering · 2026-02-11

## Full-text entities

- **Diseases:** Rheumatic Heart Valve Disease (MESH:D006349), Cognitive Dysfunction (MESH:D003072)
- **Chemicals:** Etomidate (MESH:D005045), Ketamine (MESH:D007649)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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Source: https://tomesphere.com/paper/PMC12904107