A 70-year-old woman with COPD exacerbation on NIV has improved (pH 7.34 from 7.25, PaCO2 9.0 from 7.5 kPa). She is now tolerating breaks from NIV. The team plans to wean her from NIV. What is the recommended approach to NIV weaning in COPD?AAbrupt cessation of NIVBGradual reduction of NIV usage - extend periods off NIV progressively (e.g. off during meals, then daytime off/nocturnal only, then discontinue), monitoring ABGs during breaksCSwitch to invasive ventilation first then weanDReduce IPAP by 1 cmH2O every hour until zeroEContinue NIV indefinitely at current settingsCheck my answer