Question
After inhaling, the baby makes a humming sound while exhaling as if it’s having trouble breathing through the nose.
Answer
It is important to be aware of heart problems, which are often myocarditis. Heart enzymes and an ECG should be checked. If there are no issues, continue to observe. It could also be a psychological factor. Reducing attention to this symptom, which is essentially reducing stress, may help. If there is still concern, it is advisable to consult a psychologist or cardiologist.