Ashwin Lewis
Aspiration is when something you swallow enters your lungs or airway instead of your oesophagus. This can happen when something goes down the wrong pipe or wrong way, and can include food, liquid, saliva, stomach acid, vomit, or even a small foreign object. It is different from choking because the airway is not completely blocked. While aspiration can occur at any time, including during sleep, it is more common in older adults, infants, and people with swallowing difficulties. Silent aspiration, a type of aspiration where the person is unaware that it is happening, can lead to serious health complications such as aspiration pneumonia, a bacterial lung infection caused by the introduction of foreign bacteria into the lungs.
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What You'll Learn
- Aspiration is when something enters your airway or lungs
- Silent aspiration occurs when you inhale something without realising
- Aspiration can cause pneumonia and other serious complications
- Aspiration is more common in older adults, infants, and people with swallowing difficulties
- Diagnosis and treatment options for aspiration
Aspiration is when something enters your airway or lungs
Aspiration occurs when something enters your airway or lungs. This can happen when something is swallowed and "goes down the wrong way", or when something comes back up from your stomach into your throat. While choking completely blocks your airway, aspiration only partially blocks it. This means that people can sometimes aspirate a small amount of something without developing serious problems—their body will usually clear it out with a coughing reflex.
However, aspiration can increase your risk for health conditions such as pneumonia. If aspiration occurs frequently, it is known as chronic aspiration. Silent aspiration is a type of aspiration that occurs when someone inhales a substance without noticing. This can happen for several reasons, and it is important to find the cause as it can lead to serious conditions such as aspiration pneumonia, a lung infection. People with silent aspiration may not cough, and may not have any symptoms at all. However, some people wheeze, have trouble breathing, or have a hoarse voice after they eat, drink, vomit, or experience heartburn.
Aspiration is common, and certain groups are more likely to aspirate. Older adults, infants, people who have trouble swallowing or controlling their tongues, and people who are intubated are all more prone to aspiration. People who have had a stroke, or who have developmental disabilities, nervous system disorders, or sensory differences are also more likely to aspirate.
If you suspect aspiration in yourself or someone you care for, you should see a doctor. There are various tests for aspiration, including X-rays, bronchoscopy, and pharyngeal manometry. Treatment for aspiration begins with treating the condition that is causing it.
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Silent aspiration occurs when you inhale something without realising
Silent aspiration can occur in people of all ages, from babies to children and adults. It is more common in older adults due to age-related changes in swallowing and sensory functions. Conditions such as dementia and stroke can also increase the risk of silent aspiration in older individuals. Additionally, people with sensory differences or those under institutional care may experience silent aspiration due to their unique circumstances.
There are various reasons why silent aspiration occurs. It often affects individuals with conditions that interfere with their swallowing ability. For example, cleft lip or cleft palate, dysphagia (difficulty swallowing), vocal cord paralysis, and gastroesophageal reflux disease (GERD) can all contribute to silent aspiration. GERD, in particular, can cause stomach acid to flow upward into the throat, leading to silent aspiration of stomach acid.
The symptoms of silent aspiration vary depending on age. In babies, signs may include fast breathing or holding their breath during feedings, frequent low-grade fevers, refusing to feed, and a wet-sounding voice or cry after feeding. Older children and adults may experience faster breathing while eating, a feeling of something stuck in their throat, food refusal, nasal congestion that disappears after eating, noisy breathing or wheezing, and a wet-sounding voice due to phlegm after eating.
It is important to note that people with silent aspiration may not exhibit any symptoms at all. This is because the amount inhaled might be too small to cause noticeable issues, and the body usually clears it out through coughing. However, if silent aspiration occurs regularly, it can lead to more serious conditions like aspiration pneumonia, a lung infection caused by inhaling foreign substances. Therefore, if you suspect silent aspiration in yourself or someone under your care, it is crucial to seek medical advice.
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Aspiration can cause pneumonia and other serious complications
Aspiration occurs when something you swallow enters your lungs or airway instead of your oesophagus. It can also happen when stomach contents back up into your throat. While aspiration is common, it can increase your risk of developing pneumonia and other serious complications.
Aspiration pneumonia is a bacterial lung infection caused by foreign substances entering the lungs. These foreign substances can include saliva, food, liquids, or stomach contents. While the average person can usually cough out a foreign substance before it enters the lungs, this can be more difficult for people with swallowing difficulties. Conditions that can cause swallowing difficulties include old age, neurological conditions, and developmental disabilities. Babies can also experience swallowing difficulties due to their underdeveloped swallowing reflexes.
Aspiration pneumonia can lead to serious complications, especially in vulnerable individuals. Patients with aspiration pneumonia are often elderly, frail, malnourished, or bedridden, and may have multiple comorbidities. In fact, in people with aspiration pneumonia who are unwell enough to be treated in hospital, between one in six and one in ten will die during their admission.
Aspiration pneumonia can be treated with antibiotics. However, it is important to identify and treat the underlying cause of aspiration to prevent further occurrences. Treatment options for swallowing difficulties include learning exercises, swallowing techniques, dilation, medication, surgery, and special diets.
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Aspiration is more common in older adults, infants, and people with swallowing difficulties
Aspiration occurs when something you swallow enters your airway (trachea or windpipe) or lungs. It can also happen when something goes back into your throat from your stomach. While everyone experiences this occasionally, aspiration is more likely in people who have trouble swallowing, or dysphagia. This swallowing difficulty can be temporary or part of a more serious condition.
Older adults are more prone to aspiration because they may have more trouble chewing and swallowing as they age. Conditions that suppress the cough reflex, such as sedation, further increase the risk of aspiration in this age group. Older adults with dysphagia are at a higher risk of developing aspiration pneumonia, which is often underdiagnosed due to the subtle symptoms exhibited by older persons with pneumonia. Delirium may be the only sign of pneumonia in elderly individuals. Other symptoms to watch out for include an elevated respiratory rate, fever, chills, chest pain, and crackles.
Infants and young children with dysphagia may also experience aspiration. In babies, this can lead to respiratory issues such as bronchiolitis or pneumonia. Common symptoms of aspiration in infants include coughing, choking, or tearing up while feeding or drinking liquids. A change in diet, such as thickened feeds, may be recommended for infants who frequently aspirate their breast milk or formula. In severe cases, a temporary feeding tube may be necessary until the infant's swallowing function improves.
People with swallowing difficulties, such as those with underlying genetic syndromes or neurological conditions, are also at an increased risk of aspiration. Nervous system disorders, such as amyotrophic lateral sclerosis (ALS), Parkinson's disease, and multiple sclerosis, can contribute to dysphagia and, consequently, increase the likelihood of aspiration.
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Diagnosis and treatment options for aspiration
Diagnosis and Treatment Options for Sleep Aspiration
Aspiration occurs when something you swallow enters your lungs or airway instead of your oesophagus. It can also happen when something goes back into your throat from your stomach. People who have difficulty swallowing are more likely to aspirate. Older adults, people who have had a stroke, and those with developmental disabilities are at a higher risk of aspirating.
Diagnosis
If you suspect that you or your baby is aspirating during sleep, it is important to consult a doctor. The diagnosis of aspiration usually involves a physical examination of the nose, mouth, and lungs, along with a discussion about your medical history. Here are some specific tests that may be recommended:
- Chest X-ray: This painless test provides images of your lungs, chest, throat, and airways, helping to detect pneumonia and other abnormalities.
- Fiber-optic Endoscopic Evaluation of Swallowing (FEES): A thin tube with a camera is guided through your nose to evaluate your swallowing function and check for any issues in your throat and oesophagus.
- Modified Barium Swallow (MBS): This involves taking X-rays of your throat and oesophagus while you swallow foods and liquids mixed with barium, allowing for a detailed view of the swallowing process.
- Bronchoscopy: A thin tube called a bronchoscope is inserted into your throat to capture images of your lungs and identify any signs of aspiration.
- Blood tests and sputum tests: These tests can help identify signs of infection and determine the presence of bacteria.
Treatment Options
The treatment for aspiration focuses on addressing the underlying condition that is causing it. Here are some common treatment options:
- Learning exercises and swallowing methods: For those with oropharyngeal dysphagia, learning proper swallowing techniques and exercises can help improve muscle movement and the nerves controlling the swallowing reflex.
- Swallowing techniques for neurological conditions: Individuals with neurological conditions can benefit from learning proper head and body placement while swallowing to minimize the risk of aspiration.
- Esophageal dilation: This procedure involves inserting a tube from the throat to the stomach to stretch the oesophagus, making it easier for food and liquids to pass through.
- Medications for acid reduction: Conditions like GERD (gastroesophageal reflux disease) can be managed with medications that reduce stomach acid, decreasing the likelihood of aspiration.
- Surgery: In some cases, surgery may be necessary to clear blockages or narrowings in the throat or oesophagus, improving the passage of food and liquids.
- Special diets: A prescribed special diet can help manage conditions like GERD and reduce the risk of aspiration.
- Feeding tubes: For severe cases of dysphagia, a temporary feeding tube may be recommended to ensure adequate nutrient intake without the risk of aspiration.
- Antibiotics: If aspiration leads to pneumonia, antibiotics are the primary treatment to address the infection.
- Oxygen therapy: Due to breathing difficulties caused by aspiration, extra oxygen may be required to support respiration.
- Mechanical ventilation: In severe cases, a machine may be necessary to assist with breathing until the individual recovers respiratory function.
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Frequently asked questions
Aspiration is when something you swallow enters your lungs or airway instead of your oesophagus. This can be food, liquid, saliva, stomach acid, vomit, or a foreign object.
Silent aspiration occurs when you inhale something without realising it. This can happen when you have sensory differences or are under institutional care. It can also happen when you are asleep.
Some people may wheeze, have trouble breathing, or experience a hoarse voice after they eat, drink, vomit, or experience heartburn. Silent aspiration can also cause lung scarring or aspiration pneumonia, a bacterial lung infection.
Silent aspiration can be caused by reduced tongue control, poor swallowing reflexes, or medical devices that assist with breathing. It is more common in older adults, infants, people who have trouble swallowing, and people who are intubated.
Treatment for silent aspiration begins with treating the underlying condition. For example, if you have GERD, your doctor may prescribe medication to reduce stomach acid. If you have dysphagia, treatment options include learning exercises and swallowing techniques.
