Effects of Esketamine-Dexmedetomidine Combination on Immediate Postprocedural Oxygenation Index in Severe Pneumonia Patients Undergoing Bedside Fiberoptic Bronchoscopic Sputum Aspiration: A Prospective Randomised Controlled Trial

Compared with conventional sedation protocols, the ESK-DEX combined regimen demonstrated superior OI preservation immediately after procedure, enhanced OI within 24 hours postoperatively, improved hemodynamic stability, and enhanced safety profile in severe pneumonia patients undergoing bedside FOB-guided suction therapy. This pharmacodynamic synergy addresses critical gaps in FOB sedation-simultaneously preventing hypoxemia, maintaining respiratory drive, and minimizing adverse events.