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Related to sputum: green sputum


1. a mass of salivary matter ejected from the mouth
2. saliva ejected from the mouth mixed with mucus or pus exuded from the respiratory passages, as in bronchitis or bronchiectasis



pathological secretions from the respiratory tract that are discharged with a cough; they are the product of the overactivity of the mucous glands. Sputum often contains epithelial cells, bits of lung tissue, blood, and pus. The amount of sputum, as well as its appearance, is important in the diagnosis of disease.

Sputum may be mucous, purulent, serous, bloody, or mixed. Rusty sputum (sputum mixed with and colored by blood) is a sign of lobar pneumonia. Abundant purulent sputum is characteristic of a ruptured abscess in the lungs. Gray, dirty, malodorous sputum appears when there is putrefactive decomposition of lung tissue.

Sputum may be examined in a laboratory with the aid of a microscope and also by bacteriological and cytological analyses. Laboratory examination makes it possible to detect pathogenic microorganisms (including the causative agent of tuberculosis), cells of malignant tumors, and certain other elements that are characteristic of certain diseases, and to determine the sensitivity of bacterial flora to antibiotics.


Material discharged from the surface of the respiratory passages, mouth, or throat; may contain saliva, mucus, pus, microorganisms, blood, or inhaled particulate matter in any combination.
References in periodicals archive ?
In total, 1,920 new sputum smear-positive patients were identified during the study period; 45 were excluded from the analysis because they did not receive standard first-line treatment because of adverse drug effects or drug shortages.
In this phase, the rats were taught to pause for 5 s above holes containing sputum samples confirmed by microscopy to contain MTB, but not above samples that were not confirmed to contain MTB.
When diagnosis is based on smear microscopy, TB suspects provide a sputum sample and come back a few days later.
The test drug through its anti-inflammatory action resolved the bronchial inflammation and decreased the excessive secretion of mucopurulent sputum, by demulcent action it makes the sputum less viscous, by deobstruent action it dilates the bronchioles and by its expectorant action it removes the less viscid sputum easily thus improving the pulmonary function.
Hypertonic saline has been used for a number of years to induce sputum samples.
Sputum acid-fast bacilli (AFB) microscopy services are established for every 100,000 population by the Revised National Tuberculosis Control Programme (RNTCP) (1).
ClearSign(TM) Sputum Test - This test is used for early lung cancer detection.
Also, data from induced sputum may be more inherently variable than are data from BAL, making it more difficult to detect [O.
1], have a lower body mass index, and have S aureus on sputum culture and were less likely to have P aeruginosa in their sputum.
In phase 2 clinical trials, 80% (35/44) of tuberculosis patients undergoing standard anti-TB chemotherapy were no longer contagious (as measured by negative sputum cultures) 3 months after also receiving a five-day regimen of parenteral SCV-07 therapy compared to 37% (10/27) of patients whose anti-TB therapy did not include SCV-07.
Sputum is the thick fluid found in the respiratory tract of all people, and found to be a thick biofilm in cystic fibrosis patients.