induced sputum


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sputum

 [spu´tum]
mucous secretion from the lungs, bronchi, and trachea that is ejected through the mouth, in contrast to saliva, which is the secretion of the salivary glands. Called also expectoration.
induced sputum a sputum specimen produced for diagnostic tests by aerosol administration of a hypertonic saline solution.
sputum specimen a sample of mucous secretion from the bronchi and lungs. The specimen may be examined microscopically for the presence of malignant cells (cytologic examination) or tested to identify pathogenic bacteria (bacteriologic examination). It is essential that the specimen obtained be mucus from the lungs and bronchi and not saliva. For those unable to produce sputum for examination, an aerosol may be used to increase the flow of secretions and stimulate coughing. The optimum time for collection of a sputum specimen is in the morning before eating or drinking anything. At this time secretions accumulated in the bronchi through the night are more readily available, and, should the coughing produce gagging, the patient is less likely to vomit if the stomach is empty. Specimens collected for bacteriologic culture must be placed in a sterile container and handled with care to avoid contamination from sources other than the sputum.

induced sputum

Infectious disease Sputum obtained by having the Pt inhale a saline–salt water mist, causing the Pt to cough deeply
References in periodicals archive ?
Use of induced sputum cell counts to investigate airway inflammation in asthma.
Increased expression of the chemoattractant cytokines eotaxin, monocyte chemotactic protein-4, and interleukin-16 in induced sputum in asthmatic patients.
In conclusion, the major finding of this study is the lack of attenuation of neutrophilic inflammation in induced sputum samples after a multiday exposure to [O.
Cellular and biochemical analysis of induced sputum from asthmatic and from healthy subjects.
Analysis of induced sputum after air and ozone exposures in healthy subjects.
Fractional analysis of sequential induced sputum samples during sputum induction: evidence that different lung compartments are sampled at different time points.
Cell and protein analyses of induced sputum 18 hr after 1D and 4D exposure to [O.
Assessment of hazardous dust exposure by BAL and induced sputum.
High metalloproteinase 9 levels in induced sputum unexpectedly associated with smoking among workers exposed to hazardous dust [Abstract].
Induced sputum compared to bronchoalveolar lavage for evaluating patients with sarcoidosis and non-granulomatous interstitial lung disease.
Case series: use of induced sputum in the evaluation of occupational lung diseases.
5] induced decreased HRV in healthy young adults; increased blood ICAM-1 (indicating increased inflammation and coagulability), which was similar in healthy and asthmatic adults; marginally significant increases in serum IL-6, an acute-phase reactant, in asthmatics; transient decreases in arterial oxygen saturation in elderly subjects; decreased HRV in elderly subjects; a greater number of supra-ventricular and ventricular ectopic heartbeats in elderly subjects; and increased IL-6 in induced sputum, suggesting increased airway inflammation.