Journal of Anaesthesiology, Clinical Pharmacology最新文献

Background and aims: Our study aimed to use submandibular ultrasound to measure upper airway parameters before and after induction dose of propofol in order to further understand upper airway changes that occur during induction of anesthesia. Measuring the changes that occur in airway anatomy due to the hypotonic effects of induction agents will allow for a deeper understanding of airway management.

Material and methods: We enrolled 39 patients between November 2021 and January 2022. Submandibular ultrasound was used to measure tongue thickness, geniohyoid muscle thickness, the distance between the lingual arteries (DLA), lateral pharyngeal wall thickness, and hyomental distance before and after administration of induction doses of the commonly used, sedative-hypnotic agent, propofol.

Results: The mean DLA increased significantly after propofol administration, from 3.62 ± 0.63 cm to 3.79 ± 0.56 cm (P < 0.001). The mean tongue thickness was 4.89 ± 0.51 cm and decreased significantly to a mean of 4.62 ± 0.50 cm after propofol administration (P < 0.001). The change in DLA measurements after propofol administration decreased significantly as STOP-BANG score increased (r = -0.344, P = 0.037). However, DLA measurements when patients were awake increased significantly with an increase in the STOP-BANG score (r = 0.351, P = 0.031).

Conclusion: These findings suggest that propofol widens and flattens the tongue, which are changes that may contribute to difficult airway management. Given the quick and non-invasive nature of ultrasound, further studies should evaluate the role of submandibular ultrasound for understanding the upper airway and airway management in various populations.

Background and aims: Social media provides a platform for physicians helping them change the practice in anaesthesiology as it promotes both personal and professional growth. In this cross-sectional study, we identify social media presence and engagement of Accreditation Council for Graduate Medical Education (ACGME)-accredited Regional Anesthesia and Acute Pain Medicine (RAAPM) fellowship programs, specifically on Twitter (Twitter Inc., San Francisco, CA) and Instagram (Meta Platforms Inc., Menlo Park, CA). This article presents current evidence about social media presence and engagement of ACGME-accredited RAAPM fellowship programs on Twitter and Instagram. These findings could potentially help cultivate greater social media engagement in the RAAPM community and improve recruitment of prospective applicants.

Material and methods: The list of ACGME-accredited RAAPM fellowship programs for the academic year 2020-2021 was obtained from the ACGME website. Accounts were searched by reviewing each program's website for profile links and by querying for the name of the program directly on Twitter and Instagram. Department of Anesthesiology, Perioperative and Pain Medicine accounts were analysed for posts pertaining to RAAPM elements, and RAAPM fellowship-specific accounts were investigated. Accounts that were solely focused on an anaesthesiology residency were excluded. All posts over the academic year period of 1 July 2020 to 30 June 2021 were analyzed.

Results: While many programs had active departmental social media accounts during our study, there was a dearth of RAAPM-related output (3.4% of tweets and 2.7% Instagram posts). Furthermore, only 10% of programs had RAAPM fellowship-specific Twitter accounts, of which only 5% of programs were active. Finally, there were no RAAPM fellowship-specific Instagram accounts.

Conclusions: While there is robust use of social media by departmental accounts, there is a paucity of RAAPM-related content and RAAPM fellowship-specific social media accounts. The current gap provides valuable opportunities for future investigations into the cyber footprint and innovative engagement strategies for the RAAPM community.

Background and aims: Auscultation to verify Ryle's tube position is difficult in obese patients. We compared the usefulness of ultrasonography (USG) versus auscultation in confirming the correct Ryle's tube placement in normal versus overweight or obese patients, time taken for confirmation, and incidence of reinsertion.

Material and methods: A prospective, observational study was carried out on 80 patients. Patients with a body mass index (BMI)>25 kg/m² formed group O and those with BMI <25 kg/m² constituted group N. After Ryle's tube insertion correct placement was first confirmed by auscultation. The presence of a gurgling sound over the epigastrium was graded (definite/doubtful/absent). During USG evaluation, if Ryle's tube was not visualized at the subxiphoid region, 20mL of air was injected, looking for dynamic fogging in the stomach. If auscultation yielded doubtful or absent results and USG also failed to confirm, Ryle's tube was repositioned and confirmed.

Results: Group O had a significantly higher BMI. Auscultation time and the time taken for USG confirmation were significantly longer in group O. The percentage of patients with definite auscultatory signs was significantly higher in group N. Significantly higher number of patients in group O had doubtful/absent auscultatory signs. Ryle's tube and fogging visualization with USG and the requirement of reinsertion were comparable in both groups. The percentage of patients with definite auscultatory confirmation and definite USG confirmation were comparable in group N. However, in group O, significantly lesser patients had definite auscultatory confirmation compared to definite USG signs.

Conclusion: Confirmation of the correct placement of Ryle's tube using ultrasound is easier than auscultation in overweight and obese patients. In normal patients, both techniques are equally useful.