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- Title
Respiratory rate is an inadequate parameter of ventilation in non-intubated sedation.
- Authors
Morimoto, Keiko; Ogura, Shin; Shinohara, Kenichiro; Sunada, Katsuhisa
- Abstract
We compared the respiratory rate (RR) and transcutaneous carbon dioxide pressure ( Pt c C O 2 ) during intravenous sedation (IVS), to determine whether RR is a useful parameter for monitoring ventilation. This was a prospective cohort study. The study sample comprised dental patients who received IVS via propofol or midazolam administration at Nippon Dental University Hospital. We simultaneously measured RR (through capnography), Pt c C O 2 (using the Pt c C O 2 monitor), and percutaneous oxygen saturation (SpO2). RR was the predictor and the outcome variable was Pt c C O 2 . Data were analyzed by Dunnett's test and Pearson's correlation coefficient. P < 0.05 was considered statistically significant. The study sample consisted of 15 patients. No significant changes were identified in the RR and SpO2 measurements over time. However, Pt c C O 2 values obtained from 20 to 40 min after induction of sedation were significantly higher than baseline values (P < 0.05). A correlation was found between RR and Pt c C O 2 (P < 0.05), but the correlation coefficient was low (r = 0.22), indicating a weak correlation between these two factors. The results of this study suggest that RR is an inadequate parameter for monitoring ventilation during IVS; however, Pt c C O 2 may be useful for monitoring.
- Subjects
VENTILATION monitoring; PEARSON correlation (Statistics); DISSOLVED oxygen in water; CARBON dioxide; LONGITUDINAL method
- Publication
Odontology, 2019, Vol 107, Issue 2, p219
- ISSN
1618-1247
- Publication type
Article
- DOI
10.1007/s10266-018-0404-z