You’re at the bedside, stethoscope in hand, and your preceptor is watching. Suddenly you can’t remember whether you start at the top or the bottom, front or back. Almost every nursing student has been there.
Where to listen to lung sounds: place the diaphragm of your stethoscope on bare skin over the anterior (front), posterior (back), and lateral (side) chest. Move systematically from the top of the lungs to the bases, and compare the left side with the right at each level. Most nurses cover about 10 paired levels this way, though the exact number varies with the patient and your facility’s teaching.
That’s the short answer. This guide gives you the rest: exact placement, landmarks, what you should hear, what you shouldn’t, the mistakes that trip up new nurses, and how to document it. Bookmark it for clinicals, or skim the cheat sheet near the end.
Free resource: Want a printable version to tuck in your pocket? Grab our Lung Sounds Assessment Cheat Sheet for Nurses & Nursing Students at the end of this guide. [LEAD MAGNET: email opt-in form]
Where Do You Listen to Lung Sounds?
You assess lung sounds over three areas of the chest:
- Anterior chest: the front, from just above the collarbones down to the lower ribs.
- Posterior chest: the back, from the upper back down to the lung bases.
- Lateral chest: the sides, under the armpits along the midaxillary line.
At each level you listen to one side, then the matching spot on the other. That left-to-right comparison is the whole point of the exam. A sound that seems fine on its own can look very different once you notice it’s absent or quieter on the opposite side.
How Many Places Should You Listen to Lung Sounds?
There’s no single universal number, and that confuses many students. Nursing textbooks, instructors, and hospital policies all differ. Some teach six anterior and six posterior points. Others teach fewer, then add lateral sites when something seems off.
What matters more than the number:
- Cover every lung field. Upper, middle, and lower, front and back.
- Compare side to side at every level.
- Listen to at least one full breath at each spot.
- Add more sites when the patient’s condition calls for it. A patient with new shortness of breath deserves a more thorough exam than a routine admission check.
Listening in one or two places isn’t enough. A problem sitting in a lower lobe can be completely silent from the front.
Always follow your facility’s policy and your instructor’s method. This guide teaches a widely used approach, but your clinical program has the final say.
Lung Auscultation Points: Where to Place Your Stethoscope
This is the core of the exam. Here are the 10 levels used in this guide. Remember each one is listened to on both the left and right sides.
| # | Area | Where to Place the Stethoscope | What You’re Assessing |
|---|---|---|---|
| 1 | Anterior apices | Just above the clavicles | Tops of the upper lobes |
| 2 | Anterior upper | Around the 2nd intercostal space, midclavicular line | Upper lung fields |
| 3 | Anterior middle | Around the 4th intercostal space, midclavicular line | Middle fields (right middle lobe on the right; upper lobe including the lingula on the left) |
| 4 | Anterior lower | Around the 6th intercostal space, midclavicular line | Lower anterior fields |
| 5 | Posterior upper | Upper back, above and between the scapulae | Upper lobes (posterior) |
| 6 | Posterior middle | Mid-back, between the scapulae | Mid lung fields, mostly lower lobes |
| 7 | Posterior lower | Lower back, around the level of T8 to T10 | Lower lobes and bases |
| 8 | Lateral upper | Axilla, around the 4th intercostal space, midaxillary line | Upper lateral fields |
| 9 | Lateral middle | Around the 6th intercostal space, midaxillary line | Mid lateral fields |
| 10 | Lateral lower | Around the 8th intercostal space, midaxillary line | Lower lateral fields |
Exact sites and the number of points vary by clinical situation, patient body size, and institutional teaching. Treat this as a reliable framework, not a rigid rule. Many facilities simplify it to three anterior, three posterior, and a few lateral points.
[VISUAL: labeled anterior / posterior / lateral lung auscultation diagram]
Here’s a practical tip. Don’t try to memorize the table in one sitting. Learn the pattern: top to bottom, side to side, front then back then sides. Once the pattern is in your hands, the intercostal numbers follow.
Where to Listen to Lung Sounds on the Anterior Chest
Anterior auscultation is where most nurses start, because it’s the easiest to reach. Sit the patient upright if they can tolerate it, or raise the head of the bed. Have them breathe a little deeper than usual through the mouth, and work from the top down.
Anterior Upper Lung Fields
Start just above the clavicles (the apices), then move to the area around the 2nd intercostal space at the midclavicular line. Place the diaphragm firmly against the skin and listen to a full inhale and exhale. Then move to the same spot on the other side.
You’re listening to the upper lobes. These are also the places where bronchial and bronchovesicular sounds are normally heard near the sternum, so know what’s normal before you start labeling things abnormal.
Anterior Middle Lung Fields
Move down to roughly the 4th intercostal space, midclavicular line. Slide between the ribs, not over them. Ribs muffle sound, and they’re one of the most common reasons students think they “can’t hear anything.”
Side-to-side comparison matters here more than anywhere. On the right, you’re near the middle lobe. On the left, the heart sits close by, so heart sounds can bleed into what you’re hearing. Don’t mistake that for a lung finding.
Anterior Lower Lung Fields
Finish at about the 6th intercostal space, midclavicular line. Don’t skip this one. The lower lung fields are where fluid and secretions tend to settle, so quieter or crackly sounds often show up here first.
For women, gently displace breast tissue and place the stethoscope on the chest wall, not on top of the breast. Explain what you’re doing and keep the patient covered as much as possible.
Tips for Listening to Lung Sounds Anteriorly
- Skin, not clothing. Fabric creates rustling sounds that can mimic crackles.
- Mouth breathing. Nose breathing can produce extra noise and shorter breaths.
- Full cycle. Listen through at least one complete inhale and exhale at each spot.
- Compare as you go. Right, then left, then down a level. Don’t finish one whole side first.
- Quiet room. Turn down the TV, close the door, and ask visitors to pause for a moment if you can.
Where to Listen to Lung Sounds on the Posterior Chest
If you only do the front, you’re leaving a lot of lung unchecked. The posterior chest covers a large share of the lower lobes. This is where many clinically important findings first appear, especially in patients who spend a lot of time in bed.
Upper Posterior Lung Fields
Have the patient sit forward slightly with arms crossed in front of them. This moves the scapulae out of the way and opens the intercostal spaces. Place the stethoscope above the scapulae and between them, over the upper back. Compare left and right.
Middle Posterior Lung Fields
Move down to the area between the scapulae, roughly the mid-back. Listen to one side, then the other, and keep the same stepwise pattern, going down and comparing.
Use the scapulae and spine as your landmarks. The scapular borders help you stay oriented, and the vertebral column tells you where the midline is. Keep the stethoscope in the spaces beside the spine, not on the bone.
Lower Posterior Lung Fields
The lung bases extend lower than most students expect. In quiet breathing, they reach roughly the level of T10 and drop lower with deep breaths. Listen below the scapulae, working down to the lower back.
This area is where the “dependent” lung lives. Fluid and secretions pool here in patients lying back or sitting in bed, which is why the lower posterior lung fields are often where crackles are first noticed. Positioning also matters: a patient slumped in bed can make the bases harder to reach and the breath sounds harder to hear.
Best Patient Position for Posterior Lung Auscultation
- Sitting upright is ideal, leaning slightly forward with arms folded across the chest.
- Side-lying works for patients who can’t sit. Listen to the upper side, then carefully roll the patient to assess the other side.
- Supported sitting with a pillow, an overbed table, or help from a colleague is often practical for fatigued or weak patients.
- Never push through discomfort. If the patient can’t tolerate position changes, document the limitation and do the best exam you can.
Where to Listen to Lung Sounds on the Lateral Chest
Many nurses forget the sides entirely. That’s a missed opportunity, because the lateral chest is where you can pick up findings the front and back might miss.
Right Lateral Lung
Place the stethoscope along the midaxillary line, starting high in the axilla and moving down to the lower ribs. On the right, you’re listening to the upper, middle, and lower lobes as they meet along the side of the chest.
Left Lateral Lung
Do the same on the left. You’re mainly listening to the upper (including the lingula) and lower lobes. Compare each level with the right side before moving down.
Why Listen to the Lateral Lung Fields?
- They help catch areas that anterior and posterior sites may not fully reach.
- They’re especially helpful when a patient has new respiratory symptoms, an abnormal finding elsewhere, or limited ability to sit forward.
- They’re a quick add-on during a routine exam and take only a few extra seconds.
Experienced nurses often say the sides are where they find the “extra” information. If something doesn’t add up from the front and back, listen along the sides.
Lung Auscultation Landmarks You Should Know
Landmarks keep you from guessing. When you know where the ribs, collarbones, and shoulder blades are, you can find the same spot on every patient.
Anterior Chest Landmarks
- Clavicles: your starting point for the apices.
- Midclavicular line: an imaginary vertical line from the middle of the clavicle straight down.
- Intercostal spaces: the gaps between ribs. Count down from the sternal angle (where the 2nd rib attaches). That’s your reliable anchor.
- Lower anterior chest: the lower ribs, around the 6th intercostal space.
Posterior Chest Landmarks
- Scapulae: the shoulder blades. Their borders guide you to the mid-back.
- Vertebral column: your midline. The spine also gives you T-level reference points.
- Scapular borders: the inferior angle of the scapula is typically around the 7th rib.
- Lower posterior fields: the bases, down to roughly T10 at rest.
Lateral Chest Landmarks
- Midaxillary line: a vertical line down the side from the middle of the armpit.
- Lateral lower chest: the side of the lower ribs, around the 8th intercostal space.
- Relationship to the lungs: these spots sit over the sides of the lobes, which is why they fill in gaps from the front and back.
[VISUAL: labeled lung auscultation diagram showing anterior, posterior, and lateral landmarks]
How to Listen to Lung Sounds Correctly
Where you place the stethoscope is half the skill. How you do it is the other half. Here’s a simple eight-step routine you can use at every bedside.
Step 1: Position the Patient
Sit them upright when you can. Make sure they’re comfortable and supported, because a patient who is tired or in pain won’t breathe well for you.
Step 2: Expose the Chest Appropriately
Ask the patient to lift or remove clothing from the area you’re listening to. Keep them covered and respect their privacy. Explain what you’re doing before you start.
Step 3: Place the Stethoscope Correctly
Use the diaphragm, the flat side, because it picks up higher-pitched breath sounds well. Press it firmly but not painfully against bare skin. Stay between the ribs and off the scapulae.
Step 4: Ask the Patient to Breathe Normally
Start with regular breathing. This gives you a baseline and keeps the patient from getting lightheaded.
Step 5: Ask for Deep Breaths When Appropriate
Ask the patient to breathe slowly and deeply through the mouth. Watch for dizziness, and give them breaks as needed. Skip this step or modify it for patients who are short of breath or fatigued.
Step 6: Listen to One Complete Respiratory Cycle
Listen through a full inhale and exhale at every site. You need to hear both phases to judge timing and quality.
Step 7: Compare Both Sides
Go right, then left, then down a level. Compare intensity, pitch, quality, and timing at each matching point.
Step 8: Document Your Findings
Document what you heard, where you heard it, and the patient’s response. Here are a few examples:
- Normal: “Lung sounds clear to auscultation bilaterally in all lobes. Respirations even and unlabored.”
- Abnormal: “Fine crackles noted in bilateral lower posterior lung fields. No cough. SpO₂ 94% on room air. RN notified.”
- Wheezing: “Expiratory wheezes heard in bilateral upper anterior fields. Patient reports mild chest tightness. Provider notified.”
Always follow your facility’s charting format. And note anything that changes between assessments, because that trend is often more useful than a single snapshot.
What Are Normal Lung Sounds?
Before you can spot abnormal lung sounds, you need to know what normal breath sounds sound like. There are three types you should expect to hear in healthy lungs, depending on where you’re listening.
Vesicular Breath Sounds
- What they sound like: soft, low-pitched, and rustling, like a gentle breeze.
- Where they’re heard: over most of the lung periphery, including the lower and lateral fields and most of the posterior chest.
- Timing: inspiration is longer and louder than expiration.
These are the sounds you want to hear across most of the chest. When a nurse charts “clear,” this is usually what they mean.
Bronchovesicular Breath Sounds
- What they sound like: medium-pitched and slightly louder, with inspiration and expiration about equal.
- Where they’re heard: near the main bronchi, typically around the sternum in the 1st and 2nd intercostal spaces anteriorly, and between the scapulae posteriorly.
Bronchial Breath Sounds
- What they sound like: loud, high-pitched, and hollow, with a noticeable pause between inhale and exhale. Expiration is longer than inspiration.
- Where they’re normally heard: over the trachea and the manubrium.
- When they’re concerning: if you hear bronchial sounds over the peripheral lung fields, where you’d expect vesicular sounds, that can suggest lung consolidation. It’s a finding worth reporting and reassessing.
This is the part many students miss. A sound isn’t abnormal because of what it is. It’s abnormal because of where you hear it. Bronchial breath sounds over the trachea are normal. Over the lower lobe, they’re not.
What Abnormal Lung Sounds Should Nurses Listen For?
Abnormal sounds, also called adventitious sounds, are added to or replace normal breath sounds. Here’s a quick reference.
| Abnormal Sound | General Description | Possible Clinical Associations |
|---|---|---|
| Crackles | Discontinuous popping or crackling sounds | Conditions affecting the small airways and alveoli, such as fluid or atelectasis |
| Wheezes | Continuous musical or whistling sounds | Narrowed airways |
| Rhonchi | Low-pitched, coarse, rumbling sounds | Secretions or obstruction in larger airways |
| Stridor | Loud, high-pitched sound, usually on inspiration | Upper airway obstruction (an emergency) |
| Pleural friction rub | Grating or leathery sound | Inflamed pleural surfaces |
A word of caution: a single sound doesn’t make a diagnosis. Crackles, wheezes, and rhonchi can appear in several conditions. You’re gathering one piece of the picture, along with respiratory rate, work of breathing, oxygen saturation, cough, and how the patient looks. Stridor is the exception in urgency. If you hear it, treat it as an emergency and call for help immediately.
Where Are Crackles Heard in the Lungs?
Crackles are one of the most commonly searched breath sounds, and for good reason. They’re common, and they’re easy to confuse with other noises.
Where to Listen for Fine Crackles
Fine crackles are soft, high-pitched, and sound like hair being rolled between your fingers or Velcro being slowly pulled apart. They’re often heard late in inspiration and are commonly found in the lower, dependent lung fields, especially the posterior bases.
Where to Listen for Coarse Crackles
Coarse crackles are louder, lower-pitched, and bubbly. They tend to show up earlier in inspiration and may be heard over larger airways or in multiple lung fields.
Why Crackles May Be More Noticeable in Certain Lung Fields
Gravity plays a role. Fluid and secretions settle in the dependent parts of the lung, which is why crackles often show up first at the bases. In a patient who’s been sitting upright, that’s the lower posterior fields. In a patient who’s been lying in bed, it may be the posterior and lateral regions.
What Should You Do If You Hear Crackles?
- Reassess. Ask the patient to cough or take a few deep breaths, then listen again. Some crackles clear with a cough and some don’t.
- Check the rest of the picture. Look at respiratory rate, oxygen saturation, work of breathing, and any new symptoms.
- Document. Note the location, timing, type, and whether anything changed.
- Escalate. Report according to your facility’s protocol, especially if it’s new, getting worse, or the patient is symptomatic.
Don’t try to diagnose from the sound. Your job is to recognize, document, and communicate.
Where Are Wheezes Heard in the Lungs?
What Do Wheezes Sound Like?
Wheezes are continuous, high-pitched, musical or whistling sounds. They happen when air moves through narrowed airways.
Where Should You Listen for Wheezing?
Wheezes can be heard anywhere over the chest. Listen across all lung fields, front, back, and sides, since they may be localized to one area or widespread. Many nurses can hear loud wheezes without a stethoscope, but quieter ones need careful listening.
Expiratory vs. Inspiratory Wheezing
- Expiratory wheezing is the most common and happens as the patient breathes out.
- Inspiratory wheezing can occur too and may suggest greater airway narrowing. Report it.
- Silent chest: if a patient who was wheezing suddenly goes quiet and is still struggling to breathe, that’s not improvement. It can mean very little air is moving. Act fast.
What Can Affect Wheezing?
Wheezing depends on how much airflow the patient is moving, their position, and their effort. A patient who’s too tired to breathe deeply may sound quieter than they actually are. Always compare what you hear with how the patient looks.
Common Lung Auscultation Mistakes
These are easy to fix once you know about them, and fixing them is what makes your assessment reliable.
Listening Through Clothing
Fabric rubs against the diaphragm and creates sounds that mimic crackles. Always place the stethoscope on bare skin when possible.
Using Only One Auscultation Point
One spot tells you about one spot. Cover upper, middle, and lower fields, front and back.
Not Comparing Both Sides
Side-to-side comparison is how you catch asymmetry. If you skip it, you can easily miss a subtle difference.
Placing the Stethoscope Over the Scapula
Bone blocks sound. Position the stethoscope between the ribs, not over the shoulder blade.
Pressing the Stethoscope Too Hard
Too much pressure can distort sounds and make the patient uncomfortable. Firm and flat is enough.
Forgetting the Lateral Lung Fields
The sides are quick to check and can reveal what the front and back don’t.
Not Giving the Patient Clear Breathing Instructions
“Breathe deeply” isn’t specific. Try: “Take a slow, deep breath in through your mouth, then let it out.” Patients breathe better when you’re clear and calm.
Failing to Document Abnormal Findings
If it isn’t charted, it didn’t happen. Document location, timing, type of sound, and your follow-up actions.
Does Your Stethoscope Make a Difference?
Here’s something many students find out too late. The best technique in the world won’t help if you can’t hear what’s in front of you.
A stethoscope with a clear diaphragm, snug ear tips, and good tubing can make soft breath sounds easier to pick out in a noisy unit. That matters most when you’re trying to tell fine crackles from clothing noise, or a faint wheeze from background chatter. Nurses who work in loud environments like the ER or ICU often say that sound clarity is the first thing they notice when they upgrade.
That doesn’t mean everyone needs a premium model. For nursing school and routine assessments, a reliable mid-range stethoscope does the job. If you’re building your kit for clinicals, see our guide to the [INTERNAL LINK: best stethoscopes for nursing students]. If you’re in a high-acuity area, our [INTERNAL LINK: best stethoscopes for ICU and ER nurses] breaks down what’s worth paying for.
Some nurses also like digital stethoscopes for loud settings, since they can amplify sound. If that’s on your radar, check our [INTERNAL LINK: Eko CORE 500 review].
[AFFILIATE CTA PLACEHOLDER: soft “Check current pricing” button linking to stethoscope roundup]
Anterior vs. Posterior vs. Lateral Lung Auscultation
| Assessment Area | Main Purpose | When It’s Especially Useful |
|---|---|---|
| Anterior | Assess the front lung fields, especially the upper lobes and right middle lobe | Routine respiratory assessment, quick checks |
| Posterior | Assess the back lung fields, especially the lower lobes | Comprehensive assessments, bedbound patients, suspected fluid or secretions |
| Lateral | Assess the side lung fields | Additional assessment when indicated, new symptoms, or limited positioning |
If you only have a minute, listen to the back. If you have a few minutes, do all three.
Lung Sounds Assessment Cheat Sheet
Here’s the quick version for clinicals.
Before listening
- Wash or sanitize your hands and clean your stethoscope.
- Position the patient, ideally upright.
- Expose the chest appropriately and protect privacy.
- Explain the procedure.
While listening
- Use the diaphragm on bare skin.
- Listen top to bottom and compare left to right.
- Cover the anterior, posterior, and lateral chest as appropriate.
- Note intensity, pitch, quality, and timing (inspiration vs. expiration).
After listening
- Document normal and abnormal findings, with locations.
- Reassess anything abnormal (cough, reposition, listen again).
- Escalate concerning findings according to your clinical protocols.
Download the Free Lung Sounds Cheat Sheet for Nurses
This is the version most students keep in their pocket, with auscultation points, normal vs. abnormal sounds, and sample charting language on a single page. Enter your email and we’ll send it straight to your inbox. [EMAIL OPT-IN FORM]
Frequently Asked Questions About Where to Listen to Lung Sounds
Where is the best place to listen to lung sounds?
There isn’t one best place. A thorough assessment includes the anterior, posterior, and lateral chest. If you have to prioritize, the posterior lower lung fields are especially valuable because they cover a large portion of the lower lobes and are where fluid and secretions often show up first.
How many places should you listen to lung sounds?
It depends on your program and the patient. Many nurses listen at about 10 paired levels across the front, back, and sides, while others use fewer. What matters is covering all lung fields and comparing both sides.
Where do you listen to lung sounds on the back?
Place the stethoscope between the ribs on both sides of the spine, from the upper back above and between the scapulae down to the lower back around T10. Have the patient sit forward with arms crossed if possible.
Where do you listen to lung sounds on the front?
Start above the clavicles, then move down along the midclavicular line, listening around the 2nd, 4th, and 6th intercostal spaces. Compare each level with the opposite side.
Do you listen to lung sounds on the sides?
Yes. Lateral auscultation along the midaxillary line adds coverage that the front and back can miss, and it’s especially helpful when symptoms or abnormal findings warrant a broader assessment.
Where do you listen for crackles?
Crackles are often heard in the lower, dependent lung fields, especially the posterior bases. But listen everywhere, since crackles can appear in other areas too.
Where do you listen for wheezing?
Wheezes can be heard in any lung field. Listen across the anterior, posterior, and lateral chest, and note whether the wheeze occurs on inspiration, expiration, or both.
Should you listen to lung sounds over clothing?
No. Clothing can create rustling noises that sound like crackles. Place the stethoscope on bare skin whenever possible, and keep the patient covered and comfortable.
What is the correct order for lung auscultation?
A common approach is anterior first, then posterior, then lateral, moving from top to bottom and comparing left to right at each level. Follow your facility’s or instructor’s preferred sequence.
What are normal lung sounds?
Vesicular breath sounds are heard over most of the lung fields, bronchovesicular sounds near the main bronchi (around the sternum and between the scapulae), and bronchial sounds over the trachea. Each is normal in its expected location.
What are abnormal lung sounds?
Abnormal, or adventitious, lung sounds include crackles, wheezes, rhonchi, stridor, and pleural friction rubs. Normal sounds heard in the wrong location, like bronchial sounds over the lower lobes, can also be abnormal.
Final Takeaway
If you remember nothing else from this guide, remember this:
- Listen systematically. Top to bottom, front, back, and sides.
- Compare both sides at every level.
- Know what normal sounds like before you interpret what’s abnormal.
- Location matters. The same sound can be normal in one place and concerning in another.
- Document and communicate abnormal findings promptly.
Strong respiratory assessment skills come with practice, and a clear, comfortable stethoscope helps you trust what you hear. If you’re still building your gear, our [INTERNAL LINK: stethoscope buying guide] is a good place to start.
Want a faster way to remember respiratory assessment findings? Download our free Lung Sounds Cheat Sheet for Nurses. [EMAIL OPT-IN FORM]
This guide is for educational purposes and isn’t a substitute for clinical training, facility policy, or provider direction. Always follow your program’s protocols and your clinical judgment.