B3 Comparison of diaphragmatic activity between propofol and dexmedetomidine sedation in spontaneously breathing patients under regional anaesthesia: a prospective randomized, comparative study. (11th August 2022)

• Record Type: Journal Article
• Authors: Ray, BR; Lankapalli, P; Sinha, R; Khanna, P; Anand, RK; Baidya, DK; Maitra, S; Singh, AK
• Is Part Of: Regional anesthesia and pain medicine. Volume 47(2022)Supplement 1
• Page Start: A84
• Page End: A84
• Publication Date: 2022-08-11
• Subjects: Conduction anesthesia -- Periodicals; Pain medicine -- Periodicals; 617.964
• DOI: 10.1136/rapm-2022-ESRA.79
• Languages: English
• ISSNs: 1098-7339

Abstract

Abstract : Background and Aims: Propofol and dexmedetomidineare commonly used forsedation during regional anaesthesia. Although there are many studies comparing these two agents, none of the studies have compare the effect of these agents on diaphragmatic activity. Hence this trial was done after institutional ethics committee approval to evaluate whether dexmedetomidine sedation during regional anaesthesia preserves diaphragmatic thickness fraction compared to propofol sedation. Methods: One hundred and twenty-six patients scheduled for elective surgery undergoing regional anesthesia were randomized into either dexmedetomidine (Group D) or propofol (Group P) sedation during surgery. For both the groups diaphragmatic ultrasound was done at baseline (T1), 20 minutes after the block (T2), after achieving a target bispectral index score (BIS) of 70–80 & Observer's assessment of alertness/sedation (OAA/S) score of 3 (T3) & at the end of surgery after sedation has been stopped (T4). The primary objective was to compare diaphragmatic thickness fraction (DTF) at (T3) during surgery. The diaphragmatic excursion (DE) and velocity were compared as secondary outcomes. Results: Significant difference was seen in percentage change in thickness fraction at T3 between group P and D (p value <.05). Mean of percentage increase in thickness fraction at T3 in group D was significantly higher as compared to group P. DE was also found to be significantly decreased in the Group P. Conclusions: Dexmedetomidine sedation preserves the baseline diaphragmatic thickness in comparison to propofol.