COPD Monitoring and Assessment

Primary Symptoms and Signs

The American Thoracic Society recommends monitoring for progressive dyspnea, as it typically develops gradually over years and eventually limits daily activities, serving as a key indicator of disease progression 1
Chronic cough, often productive and worse in the morning, is present in most patients and sometimes dominates the clinical picture 1
Regular sputum production for 3 months or more in 2 consecutive years defines chronic bronchitis, a common COPD feature 1
Wheezing may vary between days and throughout a single day, making serial assessment important 1
Increased breathlessness is a key indicator of exacerbation 1
Discolored sputum suggests infectious exacerbation requiring intervention 2
Breathlessness on moderate exertion (physical work, climbing hills) indicates moderate disease 2
Specific documentation of exercise tolerance should be recorded at each visit to monitor future changes in breathlessness 2

Wheezing during tidal breathing is a useful indicator of airflow limitation 1
Prolonged forced expiratory time (>5 seconds) indicates airflow limitation 1
Diminished breath sounds may be present but are poor guides to severity 1
Reduced ribcage expansion and diaphragmatic excursion indicates hyperinflation 1
Hyperresonance on percussion indicates air trapping 1
Use of accessory respiratory muscles (e.g., sternomastoid) implies severe airflow obstruction 1
Pursed-lip breathing usually indicates severe airflow obstruction 1
Central cyanosis is seen with significant hypoxemia, though sensitivity is low 1
Weight loss and anorexia are common in advanced COPD 1
Hoover sign (paradoxical inward movement of lower ribcage during inspiration) is associated with severe diaphragmatic flattening, respiratory muscle dysfunction, and predicts exacerbations 4

Post-bronchodilator FEV1/FVC ratio <0.70 confirms COPD diagnosis 1
FEV1 percent predicted stratifies severity: 60-79% (mild), 40-59% (moderate), <40% (severe) 2
Serial spirometry tracks disease progression 2
Oxygen saturation at rest and with exertion should be routinely measured 3
Oxygen saturation <94% warrants specialist referral 5
Arterial blood gas measurement is necessary when Hoover sign is present or signs of respiratory distress exist to identify hypoxemia and hypercapnia 4, 5

Complete smoking history in pack-years should be documented to assess COPD likelihood 5
Smoking history >40 pack-years has the highest likelihood ratio (LR 12) for identifying airflow obstruction 1
Frequency of respiratory infections, especially during winter months 5
History of acute worsening of symptoms associated with infective exacerbations 2
Past history of childhood wheeze, bronchitis, pertussis, atopy, pneumonia, or tuberculosis can suggest alternative diagnoses 2, 5

Altered mental status suggests severe hypercapnia 5
Severe breathlessness at rest indicates respiratory failure 5
Worsening hypercapnia symptoms such as flapping tremor, bounding pulse, or drowsiness 5
Uncoordinated ribcage motion or paradoxical abdominal wall movement during inspiration indicates respiratory muscle dysfunction or fatigue 1