Methemoglobinemia can occur when excessive amounts of nitrous oxide get into someone's hemoglobin and tissues don't receive enough oxygen The cause of death has been revealed for a 9-year-old girl who ...

The girl was found "unresponsive" hours after undergoing the surgery in Vista, California, it's been reported Becca Longmire is a digital news writer-reporter at PEOPLE. She has been working at PEOPLE ...

A 9-year-old girl died hours after she went under anesthesia for a dental procedure at a San Diego office where a dentist had been investigated after a patient nearly died. The procedure took place ...