Where should you check for a pulse on an adult? The carotid artery in the neck is the standard site for laypeople and single-rescuer CPR, while the radial artery at the wrist works for a conscious adult or a routine heart-rate check. Trained clinicians may also use the femoral artery in the groin during cardiac arrest. If you are unsure, do not delay CPR to keep hunting for a pulse.
The reason you check a pulse at all is that compressions save lives and delays cost lives. Every pulse check is a pause. The right site is the one you can find fastest, with the least interruption, and the training to interpret correctly. That principle explains almost every guideline on this topic.
Why the carotid artery is the default site
A pulse is a pressure wave, and you feel it only where an artery runs close to the surface over something firm. The carotid artery climbs the neck just beside the trachea, resting against the cervical spine. That shallow depth and bony backing make the beat easy to feel even when blood pressure collapses and flow to the limbs shuts down. The body prioritizes the brain, so the neck keeps a detectable pulse longer than the wrist does.
The radial artery, by contrast, sits over the wrist bones but is smaller and much farther from the heart. In severe shock, the body clamps down peripheral vessels to preserve central pressure. The wrist can go silent while the neck still transmits a beat. This is why advanced life support guidance designates the carotid as the primary site for adults and the femoral as an acceptable alternative for trained rescuers.
It is also why the pulse check was never meant to stand alone. Breathing and signs of life matter more than the beat itself. A gasping adult with no detectable pulse still needs compressions. A still adult with a faint pulse still needs rescue breathing and monitoring. The pulse is one data point, not the whole assessment.
In plain terms: check the neck first because the body protects that artery longest, and treat what you find as confirmation, not permission to wait.
The clock that governs every pulse check
Numbers drive this skill more than anatomy does. Professional guidelines allow no more than 10 seconds to locate a pulse and decide what to do. Ten seconds is roughly the time it takes to say a 20-word sentence aloud. If you have not found it by then, you act as if there is no pulse.
That ceiling exists because chest compressions should start within seconds of collapse in a witnessed arrest. Each minute without compressions lowers survival from out-of-hospital cardiac arrest by roughly 7 to 10 percent when no bystander CPR occurs. A 30-second search for a pulse sounds harmless and is not. The math is unforgiving: fumbling costs more than a false negative.
The numeric backbone looks like this:
| Measure | Adult threshold or value |
|---|---|
| Maximum pulse check duration | 10 seconds |
| Standard compression rate | 100 to 120 per minute |
| Compression depth | About 2 inches (5 cm) |
| Compression-to-breathing ratio (single rescuer) | 30 to 2 |
| Normal resting heart rate | 60 to 100 beats per minute |
| Compressions per 10 seconds of pause | Roughly 17 to 20 |
| Bystander CPR survival benefit | Roughly doubles to triples survival |
The table also exposes a subtlety: a resting heart rate of 60 to 100 beats per minute means 1 to 1.7 beats per second. During a 10-second check you should feel somewhere between 10 and 17 beats if the heart is beating normally. Feeling two or three faint thumps in 10 seconds is a slow, weak rhythm, and it may not generate enough output to sustain the brain.
Sites compared, honestly
There is no single best spot for every adult. The site depends on who you are, what the situation is, and what you are trying to learn. Here is the comparison most reviews skip.
| Site | Location | Best for | Main limitation | Training needed |
|---|---|---|---|---|
| Carotid | Neck, beside the windpipe | Unresponsive adult, CPR decision | Slows rescuers; easy to mistake your own pulse | Basic lay training |
| Radial | Thumb side of the wrist | Conscious adult, routine check | Unreliable in shock; harder to find fast | Minimal |
| Femoral | Groin crease, midway to the hip | Cardiac arrest, in-hospital teams | Requires exposing the groin; not for laypeople | Clinical |
| Brachial | Inner upper arm | Infants and small children | Not used in adults | Clinical |
| Temporal | Temple in front of the ear | Rarely routine | Small vessel, hard to feel | Low but unreliable |
| Apical | Left chest, stethoscope | Clinical rhythm assessment | Needs a stethoscope | Clinical |
The counterintuitive entry is the carotid itself. Press too firmly and you can trigger a vagal reflex that slows the heart you are trying to assess. Press on your own neck and you may feel your own pulse in your fingertips and mistake it for the patient's. The fix is to press gently on one side only, and to keep your thumb off your own neck.
Another caveat professionals learn early: the radial pulse may be present in ventricular fibrillation, a rhythm that produces no useful cardiac output. A palpable wrist does not guarantee perfusion. Conversely, automatic blood pressure cuffs and monitors can confuse a weak pulse with artifact. Nothing replaces a trained hand on a trained site with a decision deadline.
Where the simple story breaks down
Real scenes are messier than diagrams. In a car crash, the neck may be injured, and moving it to palpate the carotid risks harm. In that case use the radial site on a conscious victim, and treat any unresponsive trauma patient as needing spinal precautions and emergency help. For a suspected neck injury with an unresponsive adult, prioritize summoning emergency services and starting CPR if trained; the compression benefit outweighs the theoretical risk.
Obesity, thick clothing, and cold hands complicate every site. The femoral pulse is often the last to disappear, which is why hospital teams reach for it during a code. Yet groin access is impractical in public, and it exposes the patient. That trade-off is why it stays a clinical skill.
A surprising edge case involves pulseless electrical activity, in which the heart's electrical activity continues but generates no detectable beat. Here even an experienced clinician may feel nothing, and the monitor shows a rhythm. The lesson is that the pulse check is a screening question, not the answer. For a layperson, the answer is always the same: unresponsive and not breathing normally means start compressions.
Pacemakers and left ventricular assist devices add another wrinkle. A patient with a continuous-flow assist device may have no palpable pulse at all yet still be perfused. Routine pulse checks do not apply to them, and their caregivers carry specific instructions. If you encounter one, call emergency services and describe the device.
What to do, step by step
The practical sequence matters more than the anatomy trivia. Work through it in order and do not improvise a prolonged search.
Check for responsiveness. Tap the shoulders and shout. An unresponsive adult triggers the emergency system. Call for help and a defibrillator. Speakerphone and hands-free calling keep your hands free. In the US, call 911. Assess breathing for no more than 10 seconds. Normal breathing means no compressions; gasping does not count as normal. Locate the carotid. Place two fingertips in the groove between the windpipe and the neck muscle, on the side nearest you. Do not use your thumb. Time the check. Give it no more than 10 seconds. If you cannot confirm a pulse, begin compressions and use an AED as soon as it arrives. Hand off cleanly. If someone else knows CPR, alternate compressors every 2 minutes to preserve depth and rate. Fatigue erodes both within about that window.
If you are checking a conscious adult's heart rate, the radial site is easier and safer. Place two fingers on the thumb side of the wrist below the crease. Count beats for 30 seconds and double the number, or count for a full 60 seconds for accuracy. A rate under 60 or over 100 at rest is worth a medical conversation, though athletic adults commonly sit in the 40s to 50s.
The limits of what a pulse check can tell you
No pulse check answers every question. It confirms whether a central beat is palpable right now. It cannot measure blood pressure, cardiac output, or brain perfusion. It cannot distinguish a weak heart from a strong one under stress. Lay rescuers misjudge pulses often, and studies of both laypeople and clinicians show meaningful error rates when a real arrest is in progress. That is precisely why guidelines bind the check to 10 seconds and make action the default.
One unit note for readers comparing sources: guidelines state compression depth as 5 to 6 centimeters, which converts to roughly 2 to 2.4 inches. US training materials usually say about 2 inches. Both describe the same target.
The deepest limit is physiological. A pulse tells you a pressure wave reached your fingers. It cannot tell you if that wave is enough for the brain. This is why the modern approach to cardiac arrest de-emphasizes the pulse check compared with earlier eras and emphasizes compressions, early defibrillation, and rapid handoff to emergency services. Use the carotid to make a fast decision. Do not use it to talk yourself out of acting.
This article is general educational information about pulse assessment, not a diagnosis or treatment plan. It does not replace hands-on CPR training or individualized medical advice from a qualified local professional. In an emergency, call your local emergency number immediately and follow dispatcher instructions.