<s>[INST] I ve a one month old son, he was suffering from a respiratory distress with stridor when born and had been NICU for almost 5 days. Even though his respirtory rate has been normal, he has a rattle sound when he takes his breath. would like to know how long will he have this sound? [/INST] Hi, Your child appears to be having laryngomalacia. In laryngomalacia, the muscles of vocal cord are weak and so the child makes stridor like sound, although respiratory rate and heart rate is normal. Laryngomalacia usually gets corrected at 7 to 8 months of age. I hope this has helped you. Regards Dr Deepak Patel, MD Pediatrics </s>