Another risk factor is premature birth in which medical intervention, such as premature birth prevention or C-section delivery, can be used as prevention for intrauterine hypoxia.Studies have shown a connection between tetrahydrobiopterin (BH4) deficiency and hypoxia-ischemia brain injury, though further studies need to be done. Measuring fetal BH4 levels can be another way to look out for intrauterine hypoxia.During birth, birth asphyxia can occur in which cardiotocograph can be used to monitor the babys health during labor. Epidemiology
In the United States, intrauterine hypoxia and birth asphyxia were listed together as the tenth leading cause of neonatal death. Society
IH/BA is also a causative factor in cardiac and circulatory birth defects the sixth most expensive condition, as well as premature birth and low birth weight the second most expensive and it is one of the contributing factors to infant respiratory distress syndrome (RDS) also known as hyaline membrane disease, the most expensive medical condition to treat and the number one cause of infant mortality. Medicolegal
In the United States the National Practitioner Data Bank 2006 Annual Report obstetrics-related cases accounted for 8.7 percent of all 2006 physician Malpractice Payment Reports and had the highest median payment amounts ($333,334). References


== External links ==
Tubulocystic renal cell carcinoma is rare subtype of renal cell carcinoma. == References ==