Abstract
Objective
To compare the effects of intravenously injected with inhaled salbutamol in ventilator dependent infants with chronic lung disease (CLD).
Design
Prospective randomized study in which each patient served as his/her own control.
Setting
Multidisciplinary neonatal and pediatric ICU.
Patients
8 ventilator dependent premature infants with CLD.
Interventions
Salbutamol, 10 μg/kg was given intravenously, and 10–19 h later, twice 100 μg as pressurized aerosol, or vice versa, sequence randomized. The pressurized aerosol was delivered by a metered dose inhaler into a newly developed aerosol holding chamber, integrated into the inspiratory limb of the patient circuit. Respiratory system mechanics were assessed by the single breath occlusion method before and 10 and 60 min after drug administration.
Measurements and results
Compliance improved significantly after intravenous injection (0.48±0.18 to 0.67±0.16, p<0.01 and 0.59±0.23 ml/cmH2O/kg, NS, (mean±1 SD) and after inhalation (0.46±0.19 to 0.64±0.32,p<0.01 and 0.56±0.31 ml/cmH2O/kg, NS). Resistance decreased after i.v. use (0.38±0.17 to 0.25±0.11,p<0.001 and 0.25±0.10 cmH2O/ml/s, NS) and after inhalation (0.35±0.12 to 0.27±0.09,p<0.01 and 0.28±0.12 cmH2O/ml/s, NS). Heart rate increased significantly after both routes of application, whereas mean arterial pressure, respirator settings, FIO2, transcutaneous SO2 and capillary PCO2 did not change.
Conclusions
Inhaled and intravenous salbutamol improves pulmonary mechanics to the same extent with comparable side effects, and may therefore be used to facilitate weaning from respirators.
Key words: Neonate, Bronchopulmonary dysplasia, Salbutamol, Lung mechanics, Single breath occlusion method
References
- 1.O'Brodovich HM, Mellins RB. Bronchopulmonary dysplasia. Am Rev Respir Dis. 1985;132:694–709. doi: 10.1164/arrd.1985.132.3.694. [DOI] [PubMed] [Google Scholar]
- 2.Motoyama EK, Fort MD, Klesh KW, Mutich RL, Guthrie RD. Early onset of airway reactivity in premature infants with brochopulmonary dysplasia. Am Rev Respir Dis. 1987;136:50–57. doi: 10.1164/ajrccm/136.1.50. [DOI] [PubMed] [Google Scholar]
- 3.Kao LC, Warburton D, Platzker ACG, Keens TG. Effect of isoproterenol inhalation on airway resistance in chronic bronchopulmonary dysplasia. Pediatrics. 1984;73:509–514. [PubMed] [Google Scholar]
- 4.Cabal LA, Larrazabal C, Ramanathan R, Durand M, Lewis D, Siassi B, Hodgman J. Effects of metaproterenol on pulmonary mechanics, oxygenation, and ventilation in infants with chronic lung disease. J Pediatr. 1987;110:116–119. doi: 10.1016/S0022-3476(87)80302-5. [DOI] [PubMed] [Google Scholar]
- 5.Wilkie RA, Bryan MH. Effect of bronchodilators on airway resistance in ventilator-dependent neonates with chronic lung disease. J Pediatr. 1987;111:278–282. doi: 10.1016/S0022-3476(87)80087-2. [DOI] [PubMed] [Google Scholar]
- 6.Rotschild A, Solimano A, Puterman M, Smyth J, Sharma A, Albersheim S. Increased compliance in response to salbutamol in premature infants with developing bronchopulmonary dysplasia. J Pediatr. 1989;115:984–991. doi: 10.1016/S0022-3476(89)80755-3. [DOI] [PubMed] [Google Scholar]
- 7.Nakayama DK, Mutich R, Motoyama EK. Pulmonary dysfunction in surgical conditions of the newborn infant. Crit Care Med. 1991;19:926–933. doi: 10.1097/00003246-199107000-00017. [DOI] [PubMed] [Google Scholar]
- 8.Denjean A, Guimaraes H, Migdal M, Miramand JL, Dehan M, Gaultier C. Dose-related bronchodilator response to aerosolized salbutamol (albuterol) in ventilator-dependent premature infants. J Pediatr. 1992;120:974–979. doi: 10.1016/S0022-3476(05)81973-0. [DOI] [PubMed] [Google Scholar]
- 9.Sosulski R, Abbasi S, Bhutani VK, Fox WW. Physiologic effects of terbutaline on pulmonary function of infants with bronchopulmonary dysplasia. Pediatr Pulmonol. 1986;2:269–273. doi: 10.1002/ppul.1950020504. [DOI] [PubMed] [Google Scholar]
- 10.Kirpalani H, Koren G, Schmidt B, Tan Y, Santos R, Soldin S. Respiratory response and pharmakokinetics of intravenous salbutamol in infants with bronchopulmonary dysplasia. Crit Care Med. 1990;18:1374–1377. doi: 10.1097/00003246-199012000-00013. [DOI] [PubMed] [Google Scholar]
- 11.Stefano JL, Bhutani VK, Fox WW. A randomized placebocontrolled study to evaluate the effects of oral albuterol on pulmonary mechanics in ventilator-dependent infants at risk of developing BPD. Pediatr Pulmonol. 1991;10:183–190. doi: 10.1002/ppul.1950100309. [DOI] [PubMed] [Google Scholar]
- 12.MacIntyre NR, Silver RM, Miller CW, Schuler F, Coleman RE. Aerosol delivery in intubated, mechanically ventilated patients. Crit Care Med. 1985;13:81–84. doi: 10.1097/00003246-198502000-00005. [DOI] [PubMed] [Google Scholar]
- 13.Fuller HD, Dolovich MB, Posmituck G, Pack WW, Newhouse MT. Pressurized aerosol versus jet aerosol delivery to mechanically ventilated patients. Am Rev Respir Dis. 1990;141:440–444. doi: 10.1164/ajrccm/141.2.440. [DOI] [PubMed] [Google Scholar]
- 14.Grigg J, Arnon S, Jones T, Clarke A, Silverman M. Delivery of therapeutic aerosols to intubated babies. Arch Dis Child. 1992;67:25–30. doi: 10.1136/adc.67.1_Spec_No.25. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 15.Kraemer R, Frey U, Wirz Sommer C, Russi E. Short-term effect of albuterol, delivered via a new auxiliary device, in wheezy infants. Am Rev Respir Dis. 1991;144:347–351. doi: 10.1164/ajrccm/144.2.347. [DOI] [PubMed] [Google Scholar]
- 16.Lesouef PN, England SJ, Bryan AC. Passive respiratory mechanics in newborns and children. Am Rev Respir Dis. 1984;129:552–556. [PubMed] [Google Scholar]
- 17.Pfenninger J, Aebi C, Bachmann D, Wagner BP. Lung mechanics and gas exchange during treatment with multiple doses of artificial surfactant in ventilated preterm infants with hyaline membrane disease. Pediatr Pulmonol. 1992;14:10–15. doi: 10.1002/ppul.1950140104. [DOI] [PubMed] [Google Scholar]
- 18.Bohn D, Kalloghlian A, Jenkins J, Edmonds J, Barker G. Intravenous salbutamol in the treatment of status asthmaticus in children. Crit Care Med. 1984;12:892–896. doi: 10.1097/00003246-198410000-00012. [DOI] [PubMed] [Google Scholar]
- 19.Newth JL, Amsler B, Anderson GP, Morley J. The ventilatory and oxygen costs in the anesthetized rhesus monkey of inhaling drugs used in the therapy and diagnosis of asthma. Am Rev Respir Dis. 1991;143:766–771. doi: 10.1164/ajrccm/143.4_Pt_1.766. [DOI] [PubMed] [Google Scholar]
- 20.Tal A, Pasterkamp H, Leahy F. Arterial desaturation following salbutamol inhalation in acute asthma. Chest. 1984;86:868–869. doi: 10.1378/chest.86.6.868. [DOI] [PubMed] [Google Scholar]
- 21.O'Callaghan C, Hardy J, Stammers J, Stephenson TJ, Hull D. Evaluation of techniques for delivery of steroids to lungs of neonates using a rabbit model. Arch Dis Child. 1992;67:20–24. doi: 10.1136/adc.67.1_Spec_No.20. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 22.Arnon S, Grigg J, Nikander K, Silverman M. Delivery of micronized budenoside suspension by metered dose inhaler and jet nebulizer into a neonatal ventilator circuit. Pediatr Pulmonol. 1992;13:172–175. doi: 10.1002/ppul.1950130309. [DOI] [PubMed] [Google Scholar]