To take respiration vitals, you count the number of breaths a person takes in one full minute while also observing the rhythm, depth, and effort of their breathing. The normal respiratory rate for an adult is 12 to 20 breaths per minute. It sounds simple, but there’s a specific technique that produces accurate results, and it involves a bit of stealth.
Why You Count Without the Patient Knowing
The single most important trick to an accurate respiratory rate is that the person shouldn’t realize you’re counting their breaths. When people become aware that their breathing is being watched, they unconsciously change it, breathing faster, slower, or more deliberately. This ruins the measurement.
The standard technique is to transition seamlessly from taking the pulse. After you’ve finished counting heartbeats at the wrist, keep your fingers in place on the radial pulse as though you’re still measuring it. Then shift your attention to the person’s chest or abdomen and begin counting breaths. To the patient, it looks like you’re still taking their pulse. This keeps their breathing natural and unguarded.
Step-by-Step Counting Technique
One breath equals one full cycle: a rise of the chest or abdomen (inhalation) followed by a fall (exhalation). Here’s how to get an accurate count:
- Keep your fingers on the wrist. After finishing the pulse count, don’t move your hand. Look at the chest, abdomen, or shoulders to detect breathing movement.
- Count for a full 60 seconds. Use a watch or clock with a second hand. Each rise-and-fall cycle counts as one breath.
- Note the rhythm. Is the breathing regular and even, or does it speed up, slow down, or pause?
- Observe the depth. Are breaths shallow, normal, or unusually deep?
- Watch for effort. Is breathing relaxed, or does the person appear to be working hard to breathe?
At rest, a normal breathing pattern has exhalation lasting about twice as long as inhalation. During activity, inhalation and exhalation become roughly equal in length.
Why 60 Seconds Matters
You might be tempted to count for 30 seconds and multiply by two. Research comparing the two approaches found that a full 60-second count is more reliable. In one study, breathing rate in the same person varied by up to 14 breaths per minute over the course of an hour in half of all measurements, which means a short counting window can easily catch an unrepresentative stretch. Counting for a full minute, either straight through or in two 30-second blocks, smooths out that natural variability and gives you a number you can trust.
Normal Respiratory Rates by Age
What counts as “normal” changes dramatically from birth through adulthood. Infants breathe much faster than adults, and the range narrows as children grow.
- Newborn to 1 month: 30 to 60 breaths per minute
- 1 month to 1 year: 26 to 60 breaths per minute
- 1 to 10 years: 14 to 50 breaths per minute
- 11 to 18 years: 12 to 22 breaths per minute
- Adults (18+): 10 to 20 breaths per minute
In adults, a rate above 20 breaths per minute is called tachypnea (abnormally fast breathing), while a rate below the normal range is called bradypnea (abnormally slow breathing). Both can signal problems that need attention, though temporary increases from exercise, anxiety, or pain are common and expected.
What to Observe Beyond the Number
The respiratory rate is just one piece of the picture. A complete respiration assessment includes four additional qualities: rhythm, depth, symmetry, and effort.
Rhythm refers to whether breaths come at regular intervals. Irregular patterns have clinical significance. Breathing that cycles between gradually deeper breaths and periods of no breathing at all is associated with heart failure. Clusters of deep breaths separated by pauses can result from brain injury. Deep, rapid, labored breathing that doesn’t let up is the body’s attempt to correct high acid levels in the blood, often seen with uncontrolled diabetes.
Depth tells you how much air is moving. Shallow breathing may mean pain (especially with rib or abdominal injuries), while unusually deep breathing can signal metabolic problems.
Symmetry means both sides of the chest rise and fall equally. If one side lags behind, that can point to a collapsed lung, fluid buildup, or airway obstruction on that side.
Effort is perhaps the most immediately useful observation. Relaxed breathing uses the diaphragm and barely any visible muscle work. When someone is in respiratory distress, you’ll notice visible signs that the body is recruiting extra muscles to force air in and out.
Signs of Respiratory Distress
While counting breaths, watch for these red flags that indicate someone is struggling to get enough oxygen:
- Accessory muscle use: The muscles of the neck tighten visibly with each breath, or you can see the spaces between the ribs pulling inward. This means the diaphragm alone can’t do the job.
- Nasal flaring: The nostrils widen with each inhalation. This is especially significant in infants, where it’s one of the earliest and most reliable signs of breathing difficulty.
- Cyanosis: A bluish tint to the skin, lips, or fingernail beds. This is a late sign of low oxygen, meaning the body’s compensating mechanisms have already been overwhelmed by the time you see color changes.
Other things to note include the position the person has adopted. Someone who leans forward with hands braced on their knees (the “tripod” position) is instinctively trying to open their airway and make breathing easier. Audible sounds like wheezing, gurgling, or stridor (a high-pitched sound on inhalation) also belong in your assessment.
What to Record
A complete respiration vital sign entry includes more than just a number. You should document the rate in breaths per minute, the rhythm (regular or irregular), the depth (shallow, normal, or deep), and any signs of increased effort or distress. Note the patient’s position during the measurement, whether they were at rest or active, and anything audible like wheezing or labored sounds.
Recording all of these elements creates a baseline that makes future changes easier to spot. A respiratory rate of 22 with relaxed, regular breathing tells a very different story than a rate of 22 with nasal flaring and accessory muscle use. The number alone doesn’t capture that difference, which is why the qualitative observations matter just as much as the count.