Understanding NICU Medical Terms: A Plain-Language Guide
For many families, the NICU feels like learning a new language overnight. Doctors, nurses, and specialists use medical terms every day, but for parents sitting beside an incubator, those words can feel overwhelming. Understanding the terminology doesn’t take away the stress of the NICU, but it can help parents feel more informed and confident when asking questions and making decisions for their baby.
Below are some of the most common terms families hear in the NICU — explained in plain language.
Gestational Age
Gestational age refers to how far along a pregnancy was when the baby was born. A full-term pregnancy is about 40 weeks. Babies born before 37 weeks are considered premature. In the NICU, doctors often refer to both a baby’s gestational age at birth and their corrected age, which accounts for how early they were born.
Apnea
Apnea means a pause in breathing. Premature babies sometimes forget to breathe for short periods because their brains are still learning how to regulate breathing. NICU monitors alert the medical team when this happens so they can intervene if necessary.
Bradycardia (“Brady”)
Bradycardia means a baby’s heart rate drops lower than normal. It often happens along with apnea in premature babies. Most of the time, babies recover quickly on their own or with gentle stimulation from a nurse.
Desaturation (“Desat”)
Desaturation refers to a drop in the baby’s oxygen levels. NICU monitors continuously track oxygen saturation in the blood, and alarms alert staff if levels fall below a safe range.
CPAP
CPAP stands for Continuous Positive Airway Pressure. This breathing support gently pushes air into a baby’s lungs through small tubes in the nose, helping keep the airways open. It’s often used for babies who can breathe on their own but still need some assistance.
Ventilator
A ventilator is a machine that helps a baby breathe when they cannot breathe effectively on their own. A tube is placed into the baby’s airway, and the machine moves air in and out of the lungs.
Feeding Tube (NG or OG Tube)
Many NICU babies are not strong enough yet to feed by mouth. A feeding tube helps deliver breast milk or formula directly to the stomach.
NG Tube: goes through the nose into the stomach
OG Tube: goes through the mouth into the stomach
These tubes allow babies to receive nutrition while they grow stronger.
Kangaroo Care
Kangaroo care is skin-to-skin contact between a parent and baby. The baby is placed directly on the parent’s chest. This type of care can help regulate a baby’s heart rate, breathing, temperature, and bonding.
Rounds
NICU rounds are when the medical team gathers to discuss each baby’s condition and care plan for the day. Parents are often encouraged to listen and ask questions during rounds.
Discharge Goals
Before a baby can go home from the NICU, there are usually a few key milestones they need to meet. These often include:
Breathing without support
Maintaining body temperature outside an incubator
Feeding well by mouth
Consistently gaining weight
Every baby’s timeline is different.
You Don’t Have to Know Everything
It’s completely normal for NICU parents to feel overwhelmed by medical terminology. No one expects you to understand everything immediately. Asking questions is not only okay — it’s encouraged.
If you ever feel unsure about something you hear, ask the care team to explain it in plain language. Your baby’s doctors and nurses want you to feel informed and included.
And most importantly, remember: you are not alone. Many parents have walked this path before you, and communities like Saul’s Light exist to support families navigating the NICU journey.
Understanding the words is just one step. Having support while you hear them is what truly makes the difference.