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Title: Effects of inhalational bronchodilator treatment during noninvasive ventilation in severe chronic obstructive pulmonary disease exacerbations
Authors: Mukhopadhyay, A.
Dela Pena, E.
Wadden, B.
Procyshyn, M.
Keang Lim, T. 
Keywords: Bronchodilator
Chronic obstructive pulmonary disease
Inhalation therapy
Noninvasive ventilation
Issue Date: Sep-2009
Citation: Mukhopadhyay, A., Dela Pena, E., Wadden, B., Procyshyn, M., Keang Lim, T. (2009-09). Effects of inhalational bronchodilator treatment during noninvasive ventilation in severe chronic obstructive pulmonary disease exacerbations. Journal of Critical Care 24 (3) : 474.e1-474.e5. ScholarBank@NUS Repository.
Abstract: Purpose: To study the effects of withdrawing noninvasive ventilation (NIV) used during acute exacerbation of chronic obstructive pulmonary disease for the delivery of aerosolized medications on physiologic parameters and dyspnea sensation. Methods: We measured accessory muscle use, dyspnea sensation, heart rate (HR), respiratory rate (RR), blood pressure (BP), and arterial blood gases during NIV, 10 minutes after cessation of NIV (with oxygen), after nebulization with salbutamol (5 mg) and ipratropium (500 μg), and again, on restitution of NIV. Results: We studied 19 patients (3 women; mean [±SD] age, 72 [± 9] years) with a mean postbronchodilator forced expiratory volume in 1 second 40% (±12) of predicted. Baseline RR (23/min), HR (98/min), BP (121/62 mm Hg), Spo2 (95%), pH (7.31 [±0.06]), Paco2 (65 [±12] mm Hg), and Borg score (1.8 [±0.43]) were recorded. There were no significant changes in physiologic parameters and oxygenation between NIV and nebulization periods. The only physiologic changes observed were increase in systolic BP (SBP, P = .012) and HR (P = .003) after nebulization. However, significant decrease in oxygen saturation (P = .009) and increase in SBP (P = nonsignificant) were observed between NIV and oxygenation phases. Conclusion: Short-term cessation of NIV for nebulization treatment did not result in distress, discomfort, or physiologic instabilities. The only detectable changes were increase in SBP and HR, probably due to the systemic adrenergic effects of salbutamol. © 2009 Elsevier Inc. All rights reserved.
Source Title: Journal of Critical Care
ISSN: 08839441
DOI: 10.1016/j.jcrc.2008.12.009
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