Effect of high-flow nasal oxygen therapy on cardiac cycle efficiency in coronary artery disease patients undergoing endoscopy: study protocol for randomised controlled trial.

BMJ Open · 2025 · PMC12374681 · PMID 40846332

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25 Therefore, CCE may have indicative significance for the occurrence of myocardial ischaemia in non-intubated sedated patients with CAD undergoing gastrointestinal endoscopy.

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