Vitamin D Replacement in Bronchiectasis

This study seeks to address the limitations in previous related studies on vitamin D replacement and bronchiectasis exacerbation occurrence through a self-controlled pilot study. The investigators aim to investigate whether vitamin D replacement in bronchiectasis patients with vitamin D deficiency can reduce hospitalized bronchiectasis exacerbation occurrence. Patients who participated in the prior study entitled "Prospective clinical study on serum 25-hydroxyvitamin D (25-OH D) level and risk of bronchiectasis exacerbation" (UW 22-317) will be invited for participation during regular clinic follow-up and management in Queen Mary Hospital. If participants are willing to join the further research, participants will be recruited in this self-controlled study. There are some differences from usual management to non-CF bronchiectasis subjects. The study subjects would be checked for their blood 25-hydroxyvitamin-D level during the study period. The non-CF bronchiectasis subjects with Vitamin D deficiency would be given 1000 IU and 2000 IU (if needed). The investigators aim to correct their Vitamin D deficiency completely, aiming at blood 25-hydroxyvitamin-D level \>=50, i.e. treat to target. The dose depends on the level of Vitamin D after replacement. If blood 25-hydroxyvitamin-D level is 50 or above, then 1000 IU is suffice. If blood 25-hydroxyvitamin-D level is still below 50, the investigators will increase to 2000 IU.

This description comes directly from the study's public registry record.

Wang Chun Kwok, MBBS  ·  2255 3111  ·  kwokwch@hku.hk

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