Obstructive apnea can be detected when the level of oxygen has declined in the blood and/or results in slowing of the heart rate. Home apnea monitors (which must be distinguished from infant monitors that are designed only to allow parents to listen to the infant remotely) most frequently measure only respiratory movements and/or heart rate. They are generally used with premature infants who are otherwise ready for discharge, but who continue to require supplemental oxygen or medication for mild residual AOP. Home apnea monitoring is typically required for 6–12 weeks after discharge. Outcome
Since AOP is fundamentally a problem of the immaturity of the physiological systems of the premature infant, it is a self-limited condition that will resolve when these systems mature. It is unusual for an infant to continue to have significant problems with AOP beyond 43 weeks post-conceptual age. Infants who have had AOP are at increased risk of recurrence of apnea in response to exposure to anesthetic agents, at least until around 52 weeks post-conceptual age. There is no evidence that a history of AOP places an infant at increased risk for SIDS. However, any premature infant (regardless of whether they have had AOP) is at increased risk of SIDS. It is important that other factors related to SIDS risk be avoided (exposure to smoking, prone sleeping, excess bedding materials, etc.) Epidemiology
Apnea of prematurity occurs in at least 85 percent of infants who are born at less than 34 weeks of gestation.
Classification
Bicuspid aortic valves may assume three different types of configuration:
"Real" bicuspid valves with two symmetric leaflets
A tricuspid architecture with a fusion of two leaflets
A tricuspid architecture with a fusion of three leaflets

Treatment
Complications stemming from structural heart issues are most often treated through surgical intervention, which could include aortic valve replacement, or balloon valvuloplasty. Prognosis
BAV frequently leads to significant complications in over one-third of affected individuals which often lead to significant morbidity and mortality. Notable complications of BAV include narrowing of the aortic valve opening, backward blood flow at the aortic valve, dilation of the ascending aorta, and infection of the heart valve.If aortic regurgitation and dilation of the ascending aorta are noted in someone, they should undergo yearly surveillance with transthoracic echocardiograms if the aortic root measures 4.5 centimeters or greater in diameter. Epidemiology
Bicuspid aortic valves are the most common cardiac valvular anomaly, occurring in 1–2% of the general population. It is twice as common in males as in females.Bicuspid aortic valve is a heritable condition, with a demonstrated association with mutations in the NOTCH1 gene.