Hi, Thank you for your query on Healthcare Magic. Due to cardiac arrest, blood and oxygen supply will be stopped to the brain causing brain injury due to ischemic changes know as hypoxic ischemic encephalopathy. Depending on the duration and severity of the insult, the damage to the brain will occur and as the brain cells has know regenerative capacity, the damage is almost permanent. The ischemic changes will lead to the the death of the neurons in that area Due to plasticity of nervous tissue in children, we may expect a little bit improvement, but expecting dramatic improvement in the child condition is a dream at this point. Physiotherapy is the mainstay of treatment to prevent the stiffness. Feeding is an important issue and can be done with care to prevent aspiration by using nasogastric tube. Frequent change of position to prevent the pressure sores is an important aspect. Bowel and bladder care is also important. But the exact treatment options, outcome, and the complications will be commented by the treating doctors as they will be having complete knowledge regarding the child. Hope I have answered your query.