Compare conditions

Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

COPD Exacerbation

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In one line

·The patient's airways are already narrow from long-term damage, and now something (usually an infection) has made them even tighter and filled with mucus.

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Normal physiology

·In healthy lungs, air flows easily in and out through open, stretchy airways. Tiny air sacs (alveoli) at the end of each airway grab oxygen from the air you breathe in and dump carbon dioxide (CO2) into the air you breathe out. The diaphragm (the big dome-shaped muscle under your lungs) pulls down to let air in, then relaxes so the lungs spring back and push air out. The airways have elastic walls that keep them open, and a thin layer of mucus traps any dust or germs so tiny hairs (cilia) can sweep them out. Your brain watches the CO2 level in your blood and tells you to breathe faster when CO2 goes up. In COPD, this system is already broken before any flare-up (exacerbation) happens.

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What goes wrong

·In a COPD flare-up (exacerbation), something irritates or infects the already-damaged airways, making them swell, fill with thick mucus, and squeeze tight. Now the patient cannot blow air out, so stale air with CO2 gets trapped inside and oxygen cannot get in. The most common triggers are respiratory infections (viruses like rhinovirus, influenza, or RSV; bacteria like Haemophilus influenzae, Streptococcus pneumoniae, or Moraxella catarrhalis). Other triggers include breathing in air pollution, cigarette smoke, cold air, or having a blood clot travel to the lung (pulmonary a traveling clot lodging in a vessel (embolism)). Sometimes no clear trigger is found. The key break is that the baseline narrow, floppy airways—already barely able to let air out—now become even more obstructed, and the patient's breathing muscles cannot keep up with the extra work.

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Hallmark signs

·Breathing gets harder or faster than usual
·More coughing than usual
·Coughed-up mucus (Sputum) (the mucus you cough up) changes color to yellow, green, or brown, or you cough up more of it
·Chest feels tight
·Wheezing (a whistling sound when you breathe)
·Using neck and shoulder muscles to breathe, or belly moving in and out a lot
·Breathing out takes much longer than usual, or you purse your lips (make them tight) when you breathe out
·Feeling more tired than usual, or confused

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Red flags · escalate now

·New confusion or can't stay awake
·Lips or fingernails turn blue or gray
·Chest pain
·Breathing is so hard you can't speak a full sentence
·Using neck and shoulder muscles to breathe, or sitting and leaning forward to breathe

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Workup

·Arterial blood gas (ABG)
·Chest X-ray
·Electrocardiogram (ECG or EKG)
·Complete blood count (CBC)
·Procalcitonin
·Basic metabolic panel (BMP or Chem-7)
·Brain natriuretic peptide (BNP) if heart failure is suspected

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Treatment

·Nebulized short-acting beta-agonist (albuterol) plus short-acting anticholinergic (ipratropium)
·Systemic corticosteroids (prednisone 40 mg by mouth daily for 5 days, or equivalent IV dose)
·Antibiotics (azithromycin, doxycycline, or amoxicillin-clavulanate) if at least 2 of these are present: worse trouble breathing (dyspnea), more coughed-up mucus (sputum), or pus-filled (purulent) (thick yellow or green) coughed-up mucus
·Controlled oxygen therapy to target SpO2 88 to 92 percent (NOT higher)
·Noninvasive positive-pressure ventilation (BiPAP or CPAP) if pH is below 7.35, PaCO2 is above 45 mmHg, and respiratory rate is above 25 despite initial treatment
·Smoking cessation counseling and nicotine replacement (patch, gum, or lozenge)
·Pulmonary rehabilitation referral before discharge

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NCLEX trap

·In COPD flare-up (exacerbation), many patients rely on low oxygen to trigger their next breath. High oxygen shuts off that signal, the patient breathes less, carbon dioxide (the waste gas) climbs dangerously high, and the patient can crash. The safe target is SpO2 88–92% using controlled oxygen (nasal cannula 1–2 L/min or Venturi mask 24–28%).
·The main problem is that airways are swollen and clogged with mucus, and air gets trapped in the lungs. Open the airways first with bronchodilators (albuterol and ipratropium) and steroids (prednisone or methylprednisolone). Then manage oxygen carefully. Treat the blocked-airway problem, not just the oxygen number.
·Drowsiness and confusion in COPD flare-up (exacerbation) mean carbon dioxide is too high (hypercapnia) and the blood is too acidic (respiratory too much acid in the blood (acidosis)). This is a crash warning. The patient may need bilevel positive airway pressure (BiPAP) or intubation (breathing tube) right now. Do not let them 'sleep it off.'
·Use the Anthonisen criteria: antibiotics are needed if at least two of these three are present—worsened shortness of breath, increased coughed-up mucus (sputum) volume, or increased coughed-up mucus purulence (thicker, yellow, green, or bloody). Color alone is one sign; you need at least two signs. Clear coughed-up mucus does not rule out infection if the other two signs are present.
·COPD flare-up (exacerbation) is different from asthma. In COPD, the airways are already permanently damaged from years of smoke or pollution, and air gets trapped because the airways collapse on exhale. Steroids help but take days to work. BiPAP is often essential to push trapped air out. In asthma, the airways can return to normal, steroids work faster, and BiPAP is rarely needed. Treating COPD like asthma will miss the CO2 trap and the need for ventilatory support.

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