• Motoki Namekawa, Yasushi Tsujimoto, Masahiro Banno, Yuki Kataoka, Hiraku Tsujimoto, Yu Inaba, and Takashi Fujiwara.
• Department of Critical Care Medicine, Kurashiki Central Hospital, 1-1-1, Miwa, Kurashiki, Okayama, Japan. mn14383@kchnet.or.jp.
• J Anesth. 2020 Jun 1; 34 (3): 453-463.

AbstractTransesophageal echocardiography (TEE) is a well-established procedure, but serious complications may occur. This systematic review and meta-analysis assessed the utility of videolaryngoscopy-assisted technique in TEE probe insertion. We performed a systematic search in MEDLINE, EMBASE, CENTRAL, and ICTRP. We included RCTs comparing TEE probe insertion techniques assisted with videolaryngoscopy and with any other insertion technique in adult patients. Primary outcome measures were (1) the number of attempts before successful TEE probe insertion, and (2) the risk of any procedural injury to related structures. The secondary outcome measure was time to TEE probe insertion. In total, three studies (n = 266) were included in this systematic review. Overall, a significantly less number of attempts were required with videolaryngoscopy-assisted insertion (mean difference [MD] - 0.60; 95% confidence interval [CI] - 0.73, - 0.46; low quality of evidence). Videolaryngoscopy-assisted technique was also associated with smaller risk of complications (risk ratio [RR] 0.17; 95% CI 0.05, 0.62; low quality of evidence). There was no significant difference in time to probe insertion (MD - 8.57; 95% CI - 26.31, 9.16; very low quality of evidence). The use of videolaryngoscopy for TEE probe insertion is associated with a significant reduction in the number of attempts and complication rate.

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