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most nicus have advanced machines for testing body functions, such as the electrocardiograph (ecg). an ecg measures and records the electrical activity of the heart. the ecg machine has a screen that shows the heart’s electrical activity. it is normally used to detect certain heart problems in babies. the ecg machine will also be used to detect certain problems in the lungs. the chest ecg is a type of ecg that is most commonly used in the nicu and in the hospital. the chest ecg, also called a lead ecg, is an electrical record of the electrical activity of the heart. the lead ecg is generated by the connection of a small number of electrodes to the chest. the electrodes are placed to record electrical activity in the heart. sometimes, a neonatologist uses a test such as an echocardiogram to look at the heart. a baby whose lungs are tested by an ecg is called a "high risk" baby. 


in an older baby, the ecg can also be used to check what is called a "conduction study" of the heart. this study is made to look at how the heart wires communicate with the rest of the heart. a baby whose lungs are tested by an ecg is called a "low risk" baby. 


the doctor will typically check for prematurity, the smallness of the baby and whether the baby is taking vital signs, sucking or swallowing. if the baby looks very sick, the doctors may also check the lungs by blowing air into the baby’s lungs and seeing if the baby can breath in and out. premature babies are those whose lungs and other organs are not ready for birth. the doctor will evaluate the baby to find out the status of the baby’s lungs. the doctor will make a call to the nicu as to how soon the baby needs to be delivered. some babies will need oxygen on a permanent basis, and others will be able to breathe on their own. 84d34552a1