Abstract

Bronchopulmonary Dysplasia (BPD) is the most common chronic respiratory disease found in premature infants following prolonged supplemental oxygen and mechanical ventilation. Although salbutamol, a selective ß2 agonist, is known to relax the hypertrophied smooth muscles around the small airways in adults, earlier literature has suggested that neonates did not have enough peribronchial smooth muscle for constriction and thus lacked a bronchodilatory response to ß2 agonists. The present study was designed to determine whether infants of less than 32 weeks gestational age with elevated lung resistance were responsive to salbutamol. Nineteen premature infants (mean gestational age 26.0 +/- 2.1 weeks and mean birth weight 851.3 +/- 244.4 g) were recruited for the study. Immediately before and 30 minutes after the commencement of nebulized salbutamol administration, a minimum of 15 breaths were measured and analyzed for each patient. From this breath-by-breath analysis, the lung mechanics and Work of Breathing (WOB) were calculated. Results were then compared by paired t-tests. The use of salbutamol resulted in a significant improvement in airway resistance (p = 0.008) and tendency for impedance reduction. These results indicate that very premature infants (< 32 weeks) with BPD respond favorably to bronchodilators. Although the mechanism of action remains to be elucidated, salbutamol most probably achieves its effects through the relaxation of the hypertrophied peribronchial smooth muscle. Early intervention to relieve airway obstruction may promote early weaning from mechanical ventilation and diminish both duration and severity of BPD.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.