Asthmatic Crisis
An asthmatic crisis, also called status asthmaticus or acute severe asthma, is a life-threatening emergency where breathing difficulties continue to worsen despite treatment with standard rescue medications. This severe complication of asthma can develop rapidly and requires immediate medical attention to prevent respiratory failure.
Table of contents
- What Is an Asthmatic Crisis?
- Symptoms and Warning Signs
- Causes and Triggers
- How Is It Diagnosed?
- Emergency Treatment
- Complications and Risks
- Preventing an Asthmatic Crisis
What Is an Asthmatic Crisis?
An asthmatic crisis represents the most severe form of asthma attack. When you have this condition, your airways become severely narrowed, swollen, and filled with mucus, making it extremely difficult to breathe[1]. Unlike a typical asthma flare-up that responds to your regular rescue inhaler, an asthmatic crisis continues to worsen even after you take standard medications at home[3].
This medical emergency is also known as status asthmaticus or acute severe asthma. During an asthmatic crisis, the inflammation and mucus in your lungs cause such severe airflow obstruction that you might not be able to get enough oxygen to your organs and tissues[5]. The condition can develop over several hours or days, but sometimes it comes on very quickly within just minutes[3].
What makes an asthmatic crisis different from a regular asthma attack is that it does not respond to typical treatments with beta-2 agonists (quick-relief inhalers like albuterol) and corticosteroids (anti-inflammatory medications)[5]. Without proper emergency treatment, this condition can lead to respiratory failure and can be fatal[2].
Symptoms and Warning Signs
Recognizing the signs of an asthmatic crisis can save your life. The symptoms are more severe than those of a typical asthma attack and indicate that you need emergency medical help immediately[3].
The main symptoms of an asthmatic crisis include severe shortness of breath that makes it difficult to speak or eat. You may only be able to say a few words at a time before needing to catch your breath[3]. Along with this extreme difficulty breathing, you will likely experience loud wheezing (a whistling sound when you breathe), persistent coughing, and a very fast heart rate[9].
As the crisis worsens, you might feel dizzy or confused because your brain is not getting enough oxygen. Your fingers, lips, or skin may turn bluish in color, which is a serious warning sign[3]. You may also notice your chest tightening and your breathing becoming faster and more labored, with visible tugging of the skin between your ribs or at the base of your neck as you struggle to breathe[5].
Even before a full crisis develops, there are warning signs that your asthma is getting dangerously out of control. These include needing to use your rescue inhaler more and more often, experiencing coughing or shortness of breath that wakes you up at night, and finding it harder to do your usual activities[9].
Causes and Triggers
An asthmatic crisis occurs when the chronic inflammation in your airways becomes severely worse. Experts believe that the severe swelling and excessive mucus production in the airways cause the most hard-to-control attacks, rather than just the muscle tightening around the airways[3].
Many different triggers can lead to an asthmatic crisis. Common triggers include indoor and outdoor allergens such as pollen, dust mites, pet dander, and mold. Other irritants like smoke, strong fragrances, or cold air can also spark a severe attack[3][2].
Respiratory infections are particularly dangerous triggers. Having a cold, the flu, or COVID-19 can quickly worsen your asthma and lead to a crisis[3]. Physical exercise and emotional stress can also trigger severe symptoms in some people[2].
Certain factors put you at higher risk of developing an asthmatic crisis. You are more likely to have a severe attack if you do not know how to use your inhaler correctly, if you or your doctor underestimate how severe your asthma really is, or if you are unable or unwilling to take your prescribed medications as directed[3]. Not having a clear plan from your doctor about when to take your medicines can also increase your risk.
How Is It Diagnosed?
When you arrive at the emergency department with severe breathing problems, doctors will start treating you right away while also checking how serious your condition is. A healthcare provider will diagnose an asthmatic crisis based on your symptoms and by examining you[3].
The doctor will ask about your medical history and listen to your chest. They will also perform breathing tests to measure how well air moves in and out of your lungs[10]. One common test measures your peak expiratory flow (PEF), which shows how quickly you can force air out of your lungs. During a severe attack, this number will be much lower than your normal reading[10].
Another important test is called spirometry, which measures both how much air your lungs can hold and how fast you can breathe out. This measurement, called forced expiratory volume (FEV-1), is compared to what is normal for someone without asthma[10].
Doctors will also check your oxygen levels using a small device clipped to your finger called a pulse oximeter. This shows how well your lungs are delivering oxygen to your blood[10]. In severe cases, they may need to take a blood sample from an artery to measure oxygen and carbon dioxide levels more precisely through an arterial blood gas test[5].
Additional tests may include a chest X-ray or blood tests to rule out other conditions and check for complications[3][11].
Emergency Treatment
An asthmatic crisis is a medical emergency that requires immediate action. If you or someone near you is having an asthma attack that is not getting better with medication, call emergency services (911 in the United States or your local emergency number) right away[3][17].
While waiting for emergency help, follow these asthma first aid steps: Sit upright to help breathing. Try to stay calm and do not leave the person alone. Give four separate puffs of a blue or grey reliever inhaler (such as albuterol), taking four breaths from a spacer device for each puff. Wait four minutes, and if there is no improvement, give four more puffs the same way. Continue giving four puffs every four minutes until emergency help arrives[17].
Once you reach the hospital, the emergency team will work quickly to help you breathe better and prevent the crisis from worsening. The main goals are to correct severe oxygen shortage, rapidly reverse airflow obstruction, and reduce the risk of the attack coming back[5][14].
Emergency treatment typically includes high-dose inhaled short-acting beta-2 agonists (bronchodilators that open your airways), supplemental oxygen to increase oxygen levels in your blood, and systemic corticosteroids given by mouth or through a vein to reduce inflammation[3][5]. The corticosteroids are most effective when given within one hour of arriving at the emergency department[16].
For severe cases that do not respond to these initial treatments, doctors may add other medications. Multiple doses of inhaled anticholinergic medication (such as ipratropium) combined with beta-2 agonists can improve lung function and decrease the need for hospitalization, especially in school-age children[5][14]. Intravenous magnesium sulfate has been shown to significantly increase lung function and decrease hospitalizations in children with acute severe asthma[5].
In the most serious cases where other treatments are not working, you may need mechanical ventilation, where a machine helps you breathe[5]. Doctors will continue giving you medications and closely monitoring your breathing until your condition improves.
Complications and Risks
An asthmatic crisis can lead to serious and potentially life-threatening complications if not treated quickly and properly. The most dangerous complication is respiratory failure, which occurs when your lungs cannot get enough oxygen into your blood or remove enough carbon dioxide from it[3][5].
Other serious complications include hypoxia, a condition where your body tissues do not get enough oxygen, and acute respiratory distress, which can develop into complete respiratory failure[3]. The extreme effort of trying to breathe during a severe crisis can also cause a collapsed lung (pneumothorax) or irregular heart rhythms (cardiac arrhythmias)[5].
Without treatment, an asthmatic crisis can be fatal. Even with treatment, delayed intervention increases the risk of death[5]. This is why recognizing the warning signs and getting emergency help immediately is so critical.
After recovering from an asthmatic crisis, the inflammation in your airways can continue for days to weeks. This means you need to continue more intensive treatment even after you leave the hospital until your symptoms and lung function return to your normal baseline[16].
Preventing an Asthmatic Crisis
The best way to avoid an asthmatic crisis is to keep your asthma well controlled every day. This means working closely with your doctor to develop and follow an asthma action plan, which is a written guide that tells you which medicines to take daily and what to do if your symptoms get worse[6][12].
Taking your controller medications exactly as prescribed is essential, even when you feel well. These medicines, usually inhaled corticosteroids, help reduce inflammation in your airways and prevent symptoms from developing[6][12]. You should also always carry your quick-relief inhaler with you for emergencies[12].
Learning to use your inhaler correctly is crucial. Many people do not get the full benefit of their medication because they do not use their inhaler properly. Using a spacer device with your inhaler helps ensure the medicine reaches deep into your lungs where it is needed[6][17].
Monitoring your breathing at home can help you catch problems early. Your doctor may give you a peak flow meter to measure your lung function. Keeping a record of your readings and comparing them over time helps you and your doctor see if your asthma is getting worse before a crisis develops[20].
Avoiding your personal asthma triggers is another important prevention strategy. Common triggers include allergens like pollen, dust mites, and pet dander; smoke and strong smells; cold air; and respiratory infections[2][23]. Try to identify what makes your asthma worse and take steps to limit your exposure to these triggers[23].
Regular check-ups with your doctor are important to make sure your treatment plan is working. You should have an asthma review at least once a year, and more often if your asthma is not well controlled[6]. If you find yourself needing your rescue inhaler more than twice a week (not counting use before exercise), this is a sign that your asthma is not well controlled and you need to see your doctor[12].
After recovering from an asthmatic crisis, it is especially important to see your doctor within a few days for follow-up care, even if you feel better. This helps prevent another crisis from happening[17].
