| BRIEF REPORTS
|Year : 2003 | Volume
| Issue : 1 | Page : 17-20
Prevention of reperfusion lung injury by lidocaine in isolated rat lung ventilated with higher oxygen levels.
KC Das, HP Misra
University of Texas Health Center at Tyler, 11937 US Hwy 271, Tyler, TX 75708, USA. , USA
BACKGROUND: Lidocaine, an antiarrhythmic drug has been shown to be effective against post-ischaemic reperfusion injury in heart. However, its effect on pulmonary reperfusion injury has not been investigated. AIMS: We investigated the effects of lidocaine on a postischaemic reperfused rat lung model. MATERIALS AND METHODS: Lungs were isolated and perfused at constant flow with Krebs-Henseilet buffer containing 4% bovine serum albumin, and ventilated with 95% oxygen mixed with 5% CO2. Lungs were subjected to ischaemia by stopping perfusion for 60 minutes followed by reperfusion for 10 minutes. Ischaemia was induced in normothermic conditions. RESULTS: Postischaemic reperfusion caused significant (p < 0.0001) higher wet-to-dry lung weight ratio, pulmonary arterial pressure and peak airway pressure compared to control lungs. Lidocaine, at a dose of 5mg/Kg b.w. was found to significantly (p < 0.0001) attenuate the increase in the wet-to-dry lung weight ratio, pulmonary arterial pressure and peak airway pressure observed in post-ischaemic lungs. CONCLUSION: Lidocaine is effective in preventing post-ischaemic reperfusion injury in isolated, perfused rat lung.
K C Das
University of Texas Health Center at Tyler, 11937 US Hwy 271, Tyler, TX 75708, USA.
Source of Support: None, Conflict of Interest: None
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