My BB also born in 瑪嘉烈 and weight 0.85KG. He has also tried 2 cycle of medicines for the PDA but only narrowed and not yet closed. (Praying he close and don't need surgery). His lung not as strong and is still using 30-35% oxygen as he has BPD (on oxygen for more than 28 days). Yesterday daddy said he is doing well and today his ox level up 35-40% :-( I don't know how long I need to wait until he can use "貓鬚" to 呼吸. He also has 1x腰椎穿刺 & 打抗生素 & 5x 輸血 la。He'll have eye test next week, nurse said I should be prepare he may need laser :-( :-(