In 75 patients with acute pneumonia of moderate severity a comparative study between transtracheal aspiration (TTA), sputum culture and epipharynx culture was carried out. Organisms considered as the probable etiological agent were found in 53% with TTA. The same organisms were found in only 27% in sputum samples and in 21% in epipharynx samples. No serious complications with TTA was noted.
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Steinum et al. (1987) studied this question.
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