Sputum Purulence Spectrum A study by Soler (2007) compared bronchoscopic sputum culture results of those hospitalized with AECOPD to the colour of sputum at presentation, using this diagram. They found purulent sputum had a sensitivity of 89.5% and specificity of 76.2% for positive bacterial cultures. #Sputum #Purulence #Spectrum #Mucoid #Spectrum #COPD #Diagnosis #Appearance
