Sex: M
Vaccine: HEP
Symptoms: Electrocardiogram normal, Hiccups, Oxygen saturation decreased, Poor feeding infant, Poor weight gain neonatal
Clinical narrative: I (mother of patient) had a perfectly healthy pregnancy and we left labor and delivery with a perfectly healthy baby (minus kidneys due to my high fluid). I even called medical records and got his records from L&D sent over to me to confirm this. Everything was pointing to a perfectly healthy baby,  I delivered patient. We gave him the eye ointment & vitamin K vaccine on May 6. I held off on the hep B vaccine because I wanted to read up on it before giving it to him blindly. We ended up agreeing and having them administer the hep B vaccination on May 7. We checked out May 8, where he weighed 6 lbs 15 oz. We stayed one night at home, but then rushed to the ER on May 9 at 9:15 pm because he had a violent episode of the hiccups and the area around his mouth turned blue. His oxygen saturation levels were 78/79 upon arrival, but then he was able to self resolve most of the time. We stayed for the week, where we kept hearing that what happened was a  BRUE , which meant it was an unexplained event. As the week went on, his oxygen saturation levels started to have events where he would sit around 80-85? they eventually diagnosed with sleep apnea on the very last day. We checked out of hospital around 6 pm on May 13. I took him immediately to my pediatrician on May 14. Patient was STILL 6 lbs 15 oz over a week after leaving labor and delivery.  The doctors at hospital were saying my milk supply was drowning him. They had me pump for 10 minutes, then attempt to breastfeed. He would go boob to boob for over an hour. I wasn t allowed to give him a bottle of breast milk - I was told breast is best and to keep going. Hospital chalked it up to him having a feeding issue. Upon leaving the hospital, my husband and I gave him a few bottles of breast milk at home because it just didn t feel right to me. May 16 (so two days after our appointment at the pediatrician), we went back to the pediatrician and he had already popped back up to 7 lbs 9 oz. I have come to the conclusion that he never had a feeding issue, he just wasn t eating enough and also dehydrated, causing his oxygen saturations levels to dip more as the week went on. An outpatient Occupational Therapist that we had to see for his  feeding issues  mentioned this being a possibility because he was immediately discharged from OT for not having a feeding issue at all.  This all made me dig even more because it just hasn t sat right with me.. I see the second round of hep B coming up - and see a rare side effect of the hep B vaccination is apnea and asphyxiation 48 to 72 hours post injection. This perfectly times up with when we checked into the emergency room, which now leads me to believe that (especially when this was initially a  BRUE ) patient had the rare reaction to that hep B vaccine, which initially got us admitted. I think the  feeding issue  causing his saturation to be so low is what kept us there for so long. I brought this up to his sleep doctor who said that the weight gain is most likely what caused the sleep apnea episodes and all of this to spiral. I just can t see how this wouldn t explain it when we left L&D with a perfectly healthy baby with normal respiration according to his records.  I know it s an absolutely crazy thought but also maybe so crazy that it was overlooked? No one asked me about his timeline of any vaccinations or anything when we were at hospital so I don t think this was ever explored as a possibility of what got us admitted, and being underfed just led to more problems.