OBJECTIVE: To investigate the risk factors causing tracheal stenosis after tracheotomy for mechanical ventilation. METHODS: A retrospective study was carried out to review the clinical data of 560 patients who had been tracheotomy for mechanical ventilation in the First Affiliated Hospital of Sun Yat-sen University from 1990 to 2006. The clinical relevant factors causing tracheal stenosis included age, sex, preoperative intubation, preoperative intubation time, postoperative mechanical ventilation duration, airway infection, multiple changes of intubation tube, cricothyroidotomy, previous tracheotomy, gastroesophageal reflux, diabetes, etc. Multivariate stepwise logistic regression model was used for the analysis. RESULTS: Fifty-four cases (9.6%) presented tracheal stenosis in 560 patients after tracheotomy. With multivariate analysis, it was confirmed that the following variable correlated to tracheal stenosis. i.e, preoperative intubation time (chi2 = 4.323, P = 0.038), postoperative mechanical ventilation duration (chi2 = 14.062, P = 0.000), airway infection (chi2 = 8.604, P = 0.004), diabetes (chi2 = 5.237, P = 0.014). The effect degree of these risk factors was as below, postoperative mechanical ventilation duration (OR = 10.818), airway infection (OR = 6.349), diabetes (OR = 3.019), intubation time preoperative (OR = 2.156). CONCLUSIONS: Among patients who received tracheotomy for mechanical ventilation, the clinical relevant factors causing tracheal stenosis were various. Statistical analysis showed that preoperative intubation time, postoperative mechanical ventilation duration, diabetes, airway infection were main risky factors which may cause tracheal stenosis.
OBJECTIVE: To investigate the risk factors causing tracheal stenosis after tracheotomy for mechanical ventilation. METHODS: A retrospective study was carried out to review the clinical data of 560 patients who had been tracheotomy for mechanical ventilation in the First Affiliated Hospital of Sun Yat-sen University from 1990 to 2006. The clinical relevant factors causing tracheal stenosis included age, sex, preoperative intubation, preoperative intubation time, postoperative mechanical ventilation duration, airway infection, multiple changes of intubation tube, cricothyroidotomy, previous tracheotomy, gastroesophageal reflux, diabetes, etc. Multivariate stepwise logistic regression model was used for the analysis. RESULTS: Fifty-four cases (9.6%) presented tracheal stenosis in 560 patients after tracheotomy. With multivariate analysis, it was confirmed that the following variable correlated to tracheal stenosis. i.e, preoperative intubation time (chi2 = 4.323, P = 0.038), postoperative mechanical ventilation duration (chi2 = 14.062, P = 0.000), airway infection (chi2 = 8.604, P = 0.004), diabetes (chi2 = 5.237, P = 0.014). The effect degree of these risk factors was as below, postoperative mechanical ventilation duration (OR = 10.818), airway infection (OR = 6.349), diabetes (OR = 3.019), intubation time preoperative (OR = 2.156). CONCLUSIONS: Among patients who received tracheotomy for mechanical ventilation, the clinical relevant factors causing tracheal stenosis were various. Statistical analysis showed that preoperative intubation time, postoperative mechanical ventilation duration, diabetes, airway infection were main risky factors which may cause tracheal stenosis.
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