The nurse gives the patient which instruction when auscultating breath sounds?
by | Updated: Oct 30, 2022 Are you ready to learn about breath sounds, lung sounds, and auscultation? I sure hope so because that is what this study guide is all about. As a Respiratory Therapist (or student), it goes without saying that you must fully know and understand auscultation and listening to lung sounds. This is also true for nursing and medical students as well. The good news is — we created this study guide to help make the learning process much easier for you. So if you’re ready, let’s go ahead and dive right in. Grab your FREE digital copy of this study guide now — no strings attached. What are Breath Sounds?These are the sounds that come from the lungs during inhalation and exhalation that can be heard during auscultation. When an abnormality is heard in a patient’s breath sounds, this indicates that other health issues may be present, such as:
By listening to the quality, duration, and intensity of breath sounds, healthcare professionals can learn a lot more about a patient’s condition in order to provide the most appropriate forms of treatment. What is Auscultation?Auscultation is a simple, non-invasive procedure that involves the use of a stethoscope to listen to the sounds produced by the body. For the sake of this guide, we’re focusing specifically on the lungs. A stethoscope amplifies the sounds within the lungs so that we can hear and have an idea of what’s going on with the patient’s condition. When performing lung auscultation, the bell or diaphragm of the stethoscope is placed on the patient’s chest and/or back. Both sides can be compared with one another and the sounds of each lung should be compared as well. Types of Breath Sounds:Whether you’re a Respiratory Therapist, student, or even if you’re a nurse or a part of a different medical profession, knowing the types of breath sounds is extremely important. Especially for Respiratory Therapists and physicians, but arguably just as important for nurses and other professions as well.
1. Vesicular (Normal)Vesicular is just another name for normal breath sounds. They are low-pitch sounds that you would expect to hear as air flows through an open airway. The sounds are usually soft and can be heard throughout both the inspiratory and expiratory phases of breathing. 2. Crackles (Rales)Crackles, also known as rales, are short, explosive, lung sounds that are commonly heard in the small or middle airways of the lungs. When crackles are heard during auscultation, it can be associated with fluid or secretions in the lungs. Crackles can occur on both inspiration and expiration but are more common during the inspiratory phase. There are Two Types of Crackles:
Fine crackles indicate that fluid is in the smaller airways. They have a higher frequency and a shorter duration. These are often heard in patients with CHF and pulmonary edema and can be treated with diuretic medications such as Lasix. Coarse crackles are lower in pitch and longer in duration. They are caused by secretions in the large airways. They’re often referred to as Rhonchi, which we’ll talk more about in just a bit. 3. WheezesWheezes are high-pitched abnormal breath sounds that are heard as air flows through a narrowed airway. They sound kind of like a whistle and are most audible during the expiratory phase of breathing. If bilateral wheezing is heard in both lungs, this is an indication of bronchoconstriction which can be treated with a short-acting bronchodilator like albuterol. When wheezes are heard in only one lung, this is referred to as unilateral wheezing which indicates that a foreign body obstruction is present. In this case, a bronchoscopy is indicated. Wheezes are also heard when patients are fluid overloaded, as with CHF and pulmonary edema. 4. RhonchiRhonchi is an abnormal breath sound that can be heard when air moves through larger airways that have excess amounts of mucus or secretions. These lung sounds are often low-pitched and are audible during the expiratory phase. The main difference between rhonchi and wheezes is that rhonchi sounds are low and dull while wheezes are high and squeaky. As a Respiratory Therapist, when you hear rhonchi, you should recommend suctioning or bronchial hygiene therapy. 5. StridorStridor is a high-pitched lung sound that is heard when an upper airway obstruction is present. It is most often heard during the inspiratory phase of breathing. Several medical conditions can cause stridor, including the following:
It can be treated with cool mist and racemic epinephrine. And in severe cases, which would be considered as a medical emergency, intubation and mechanical ventilation would be indicated. 6. Diminished Breath SoundsThese are lung sounds that are heard when there is decreased air movement in the lungs. It’s common for patients with COPD or an acute asthma attack to have diminished breath sounds because they aren’t moving much air in and out of the lungs. Then, after a bronchodilator is administered, if you listen to their breath sounds again, you’ll often hear wheezes. This is actually sign that the patient has improved because the bronchodilator is working and has opened up the airways some. 7. Pleural Friction RubA pleural friction rub is a loud grating sound that is heard over the lungs when inflamed pleura rub together. It is caused by decreased levels of fluid in the pleural space. This lung sound is often heard in patients with pleurisy. Our Breath Sounds study guide is now available on Amazon in paperback format as well. As an affiliate, we receive compensation if you purchase through this link. What are Vesicular Breath Sounds?As mentioned earlier, vesicular breath sounds are another name for normal breath sounds. They are low-pitched and basically sound as you would expect air to sound as it flows through an open airway. The sounds are usually soft and can be heard throughout both phases of the breathing cycle. What are Adventitious Breath Sounds?Adventitious breath sounds are the abnormal sounds that occur over the lungs and airways during auscultation. Adventitious breath sounds are commonly associated with a wide array of heart and lung conditions. The type, duration, location, and intensity of each adventitious breath sounds can help medical professionals diagnose and treat medical conditions. This is why knowing the differences between each type of abnormal breath sound is so important for healthcare practitioners. What are the Causes of Abnormal Breath Sounds?There are several causes of abnormal breath sounds. Each of which is specific to the type of breath sound the patient is experiencing. We covered a few already, but let’s go through a few more of the specific causes of abnormal lung sounds.
There are hundreds of causes of abnormal breath sounds — these are just a few of the common examples that you should be familiar with. What is the Treatment for Abnormal Breath Sounds?Abnormal breath sounds are often associated with common and treatable medical conditions. As a Respiratory Therapist or medical professional, you will be required to recommend the proper medication or treatment method for each of the different types of abnormal lung sounds. Here are the Common Treatment Strategies for Abnormal Breath Sounds:1. Metered-Dose Inhaler (MDI)This is a pressurized inhaler that delivers a bronchodilator (dilates the airways), corticosteroid (suppresses inflammation), or a combination of both. By opening the airways and suppressing the inflammatory process, it can help restore breath sounds to normal. 2. NebulizerThis is a device that delivers an aerosolized form of medication into the alveoli of the lungs via inhalation. They are commonly used to deliver bronchodilator medications, like albuterol, which can alleviate bronchoconstriction. Nebulizers can help deliver other medications as well which can treat other types of abnormal breath sounds. 3. Incentive SpirometryThis is a simple, inexpensive, and effective tool that is useful in helping a patient achieve normal lung function. This device mimics natural sighing or yawning, which in turn improves lung expansion and gas exchange. To use the device, the patient needs to place the mouthpiece spirometer in their mouth and perform deep breathing exercises. It is recommended to check with a physician before using one of these devices. As an affiliate, we receive compensation if you purchase through this link. 4. Chest physiotherapy (CPT)This is also considered a simple and effective method of normalizing abnormal breath sounds. CPT includes various techniques in order to naturally clear lung secretions through the use of vibration (or shaking), proper positioning, breathing exercises, and coughing techniques. 5. AntibioticsAntibiotic therapy is designed to fight infections and destroy microorganisms that affect lung functionality. By fighting the infection, antibiotics also help with airway inflammation and secretions which can improve abnormal breath sounds. Keep in mind that there are many different types of treatment for abnormal lung sounds. These are just a few common examples that you should be familiar with. What are Bronchial Breath Sounds?Bronchial breath sounds are hollow lung sounds that can be heard in both normal and abnormal conditions. These sounds are normal when heard over the trachea, however, they are abnormal when heard over the lung fields. For example, let’s say you’re auscultating a patient and hear bronchial breath sounds over the right lower lobe. This is a common finding in patients with pneumonia and it indicates that consolidation is present.
Example TMC Practice Question:A 63-year-old male patient was recently admitted to the ICU. While auscultating the lungs, you hear bronchial breath sounds over the right lower lobe. This would indicate which of the following? A. The patient has normal lungs Bronchial breath sounds are normal when heard over the trachea. However, if you hear bronchial breath sounds over the lung periphery, this is an abnormal finding. To get this one right, you had to know that bronchial breath sounds are sometimes heard in patients with pneumonia. And for the TMC Exam, you must remember that patient with pneumonia usually show signs of consolidation. A pneumothorax or pleural effusion are not identified by bronchial breath sounds which means that we can rule those out immediately. So by using what we know about breath sounds, as well as the process of elimination, you can easily determine that the correct answer has to be D. The correct answer is: D. Consolidation in the patient’s right lower lobe This practice question was taken straight from our TMC Test Bank. It’s one of our bestselling packages where we break down hundreds of these practice questions that cover every topic you need to know for the TMC Exam. Each question comes with a detailed rationale that explains exactly why the answer is correct.
If you thought the sample question above was helpful, definitely consider checking it out.
What are Bronchovesicular Breath Sounds?Bronchovesicular breath sounds are normal sounds that are heard in the mid-chest area or over the scapula. Unlike other normal breath sounds, bronchovesicular breath sounds have tubular quality. These sounds are the combination of bronchial breath sounds heard near the trachea and vesicular sounds in the alveoli. Bronchovesicular breath sounds have equal periods of inhalation and exhalation, so the I:E ratio is typically 1:1. However, the differences in pitch and intensity are often audible during the expiratory phase. What are Diminished Breath Sounds?As previously mentioned, diminished breath sounds are soft, distant lung sounds with a lower volume and intensity. These sounds are often present in patients with decreased lung volumes. They are also present in patients with severe obstructive conditions. That isn’t to say that this is always the case. There are several causes of diminished breath sounds. Here are Some Examples:
Each of these examples make it more difficult to hear lung sounds during auscultation which is the root cause of the diminished classification. Also note that during diminished breath sounds, the inspiratory phase is usually much longer than the expiratory phase. This means that a patient with diminished breath sounds will have an I:E ratio of 3:1. In other words, the inspiratory phase of breathing is three times longer than the expiratory phase. When are Coarse Breath Sounds Heard?Coarse breath sounds are actually a type of crackles (rales). They are clicking, bubbling, or rattling sounds that occur during the inspiratory phase of breathing when air moves through secretions that have accumulated in the larger airways. Coarse breath sounds are typically loud and low-pitched and are longer in duration. Most patients with copious amounts of secretions exhibit coarse breath sounds during auscultation of the affected lung area. When are Pneumonia Breath Sounds Heard?
Pneumonia is a respiratory infection caused by harmful microorganisms and is characterized by consolidation and a productive cough. Patients with pneumonia often have greenish or yellowish secretions which, again, are indicative of an infection. If a patient has pneumonia, you will likely hear crackling, bubbling, or rumbling sounds during auscultation. Wheezing is also a possibility is some areas of the lungs as well. Crackles in patients with pneumonia are often heard only on one side of the chest or when the patient is lying down. In addition to crackles and wheezes, low-pitch rhonchi sounds may also be audible during the expiratory phase of breathing. Additionally, as previously mentioned, bronchial breath sounds are also commonly heard in patients with pneumonia. What are Stridor Breath Sounds?Stridor is a high-pitched lung sound that is typically created by an upper airway obstruction. It is mostly audible during inhalation but can also be heard during exhalation in patients with a deteriorating condition. These sounds commonly occur in extubated patients as a complication of endotracheal intubation. In children, stridor is very audible when they are lying on their back in the supine position. Other causes of stridor include croup, pertussis, aspiration, epiglottis, choking, severe anaphylactic shock, tonsillitis, laryngitis, lung cancer, deviated septum, and blood transfusion reactions. How to Perform Auscultation?Auscultation is a technique that is used to listen to and examine the heart and lungs. It can also be used in the abdomen and other areas of the body with major blood vessels as well. But for the sake of this article, we’re focusing strictly on the lungs. In order to assess a patient’s lung sounds, auscultation must be performed using a stethoscope in order to hear the sounds as the patient breathes. Let’s go through the process of performing auscultation on a patient. Here are the Steps for Performing Auscultation:1.
Explain the procedure to the patient to establish trust and rapport. What is the Best Stethoscope for Auscultation?In order to perform auscultation and listen to breath sounds effectively, you need to get your hands on a high-quality stethoscope. The 3M Littmann Classic III is hands down our favorite and is also our top recommendation for medical professionals and students. This stethoscope is our top recommendation because it provides the best bang for your buck. As an affiliate, we receive compensation if you purchase through this link. While this one is hands-down our favorite, there are plenty of other high-quality stethoscopes on the market that deserve consideration as well. If you’re interested in learning more about the best of the best, check out our full list of the Best Stethoscopes for Medical Professionals. Now that you have a good understanding of breath sounds and auscultation, let’s take it a step further by going through some more practice questions on this topic. Practice Questions on the Topic of Lungs Sounds and Auscultation:1. What are fine crackles? 2. What are medium
crackles? 3. What is rhonchi? 4. What are coarse
crackles? 5. What are wheezes? 6. What is a pleural friction rub? 7. What is stridor? 8. What are vesicular breath sounds? 9. What are bronchovesicular breath sounds? 10. What are bronchial breath sounds? 11. What is auscultation? 12. Where are bronchovesicular breath sounds heard? 13. What breath sound is common with a pleural effusion? 14. What do fine crackles sound like? 15. What do coarse crackles
sound like? 16. What should be noted when listening to crackles? 17. What is the mechanical cause of crackles? Did someone say, "5 of PEEP?" I think so! Order your own PEEP t-shirt today. 18. What does a wheeze sound like? 19. What does rhonchi sound like? 20. What does rhonchi normally imply? 21. What makes stridor sound different than others sounds? 22. If stridor does exist, what does it mean? 23. What does a pleural rub sound like? 24. What is the mechanical main cause of a pleural rub? 25. How should a patient be positioned before auscultation? 26. What are the normal breath sounds? 27. Breath sounds can be classified into what three categories? 28. What are bronchovesicular breath sounds? 29. What are vesicular breath sounds? 30. What are the
abnormal breath sounds? 31. What are the adventitious breath sounds? 32. What is the sequence of steps in the examination of the chest and lungs? 33. What is the difference in medium crackles and coarse crackles? Final ThoughtsSo there you have it. That wraps up our massive study guide on breath sounds, abnormal lung sounds, and auscultation. I hope that this information was helpful, and I hope that it helps makes the learning process much easier for you. Again, knowing the ins and outs of breath sounds is (obviously) very important for, not only doctors, but for nurses and Respiratory Therapists as well. Not to mention, it’s never too early to learn and master this information as a student, either. So be sure to go through this information several times until it sticks. Thank you so much for reading all the way to the end and as always, breathe easy my friend.
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Medical Disclaimer: This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please consult with your physician with any questions that you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you read in this article. ReferencesThe following are the sources that were used while doing research for this article:
Recommended ReadingCompanyResourcesStudy GuidesFollowAN ELITE CAFEMEDIA LIFESTYLE PUBLISHER © 2022 Respiratory Therapy Zone Medical Disclaimer: The information provided by Respiratory Therapy Zone is for educational and informational purposes only. It should not be used as a substitute for professional medical advice, diagnosis, or treatment. Please consult with a physician with any questions that you may have regarding a medical condition. Which lung sounds are most likely Auscultated in the patient with COPD?Coarse crackles heard at the beginning of inspiration are commonly heard in patients with COPD, especially those with chronic bronchitis. These crackles have a “popping-like” character, vary in number and timing and may be heard over any lung region.
What is the best patient body position for peak flow measurement?The ideal patient posture for peak expiratory flow measurement is standing upright, but in hospitalized patients, it is often measured with the patient semi-recumbent.
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