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- Title
Effects of Various Anesthetic Agents on Laryngeal Motion During Laryngoscopy in Normal Dogs.
- Authors
Jackson, Aaron M.; Tobias, Karen; Long, Cassie; Bartges, Joseph; Harvey, Ralph
- Abstract
Objective- To evaluate the effects of various drugs and drug combinations conventionally used for anesthesia on arytenoid cartilage motion during laryngoscopy in normal dogs. Study Design- Experimental study. Animals- Six large breed healthy dogs with no previous history of respiratory dysfunction. Methods- Each dog was randomly assigned to a different injectable anesthetic protocol once weekly for 6 weeks, then in the 7th week all dogs were anesthetized with isoflurane. Videolaryngoscopy was performed and recorded starting immediately after induction until dogs could no longer be safely restrained for endoscopy. Video was digitized and 3 still images ofmaximalinspiration and expiration from the first 15 seconds (induction) and the last 15 seconds (recovery) were captured and imported into an image analysis software program. The height andarea of the laryngeal ostium were measured in pixels. Normalization of the glottal gap areawasperformed using the formula (normalized glottal gap area (NGGA)=area in pixels/height
- Publication
Veterinary Surgery, 2004, Vol 33, Issue 2, p102
- ISSN
0161-3499
- Publication type
Article
- DOI
10.1111/j.1532-950x.2004.04016.x