Prematurity is a very important problem in this country. Prematurity can cause problems with organ (such as the brain, heart, kidneys) growth and development. A very important part of keeping premature babies healthy is ensuring good blood flow to all of these organs. Some premature babies have problems with their hearts and getting enough blood out to the rest of their bodies. This problem is referred to as hypotension (low blood pressure) and is found by looking at blood test values and while examining the baby. These babies will need medications to help their heart deliver blood to all of the important areas in their bodies. Babies who have hypotension requiring medications tend to have more problems than premature babies that don't need hypotension medication. Some of these problems include a higher risk of bleeding into their brain, kidney problems, liver problems, intestinal (gut) problems causing difficulty tolerating feeds, and a very dangerous infection of their intestines. Some long term effects include hearing loss, developmental delay, and learning problems in the future that are worse than other premature babies who did not have hypotension. Hypotensive premature babies also have a higher risk of death. The cause of hypotension in the first week of life is still not known. We know that babies have to get used to being in the outside world instead of in the womb. A lot of changes with the heart and lungs have to happen for them to not be affected by that transition. If we could gain a better understanding of those changes, we might be able to prevent some of these issues from happening. This study will look closely at premature babies with and without hypotension to assess the heart and lung changes in the first week of life. To do this, we will use monitoring machines and tests to get a better idea of all the changes that happen. This information will help all neonatologists who care for premature babies.
Age range
1 Week
Sex
ALL
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Quantify physiologic changes during transitional circulation
Timeframe: 7 days