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. 2014:2014:248097.
doi: 10.1155/2014/248097. Epub 2014 Mar 3.

Evaluation of Pharyngeal Function between No Bolus and Bolus Propofol Induced Sedation for Advanced Upper Endoscopy

Shinsuke Kiriyama  1 , Hiroshi Naitoh  1 , Minoru Fukuchi  1 , Takaharu Fukasawa  1 , Kana Saito  1 , Yuichi Tabe  1 , Hayato Yamauchi  1 , Tomonori Yoshida  1 , Hiroyuki Kuwano  2
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Evaluation of Pharyngeal Function between No Bolus and Bolus Propofol Induced Sedation for Advanced Upper Endoscopy

Shinsuke Kiriyama et al. Diagn Ther Endosc. 2014.

Abstract

This study aimed to assess pharyngeal function between no bolus and bolus propofol induced sedation during gastric endoscopic submucosal dissection. A retrospective study was conducted involving consecutive gastric cancer patients. Patients in the no bolus group received a 3 mg/kg/h maintenance dose of propofol after the initiation of sedation without bolus injection. All patients in the bolus group received the same maintenance dose of propofol with bolus 0.5 mg/kg propofol injection. Pharyngeal functions were evaluated endoscopically for the first 5 min following the initial administration of propofol. Fourteen patients received no bolus propofol induction and 13 received bolus propofol induction. Motionless vocal cords were observed in 2 patients (14%) in the no bolus group and 3 (23%) in the bolus group. Trachea cartilage was not observed in the no bolus group but was apparent in 6 patients (46%) in the bolus group (P < 0.01). Scope stimulated pharyngeal reflex was observed in 11 patients (79%) in the no bolus group and in 3 (23%) in the bolus group (P < 0.01). Propofol induced sedation without bolus administration preserves pharyngeal function and may constitute a safer sedation method than with bolus.

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Figures

Figure 1
Figure 1
Endoscopic pharyngeal image: no bolus propofol induction patient. Vocal cords: motion; trachea cartilage: no observation.
Figure 2
Figure 2
Endoscopic pharyngeal image: bolus propofol induction patient. Vocal cords: motionless; trachea cartilage: observation.
See this image and copyright information in PMC

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