High-Resolution Solid-State Manometry of the Effect of Succinylcholine on Barrier Pressure

Phase 4

Completed

• Conditions: the Effect of Succinylcholine on Barrier Pressure
• Interventions: Drug: Succinylcholine

• Registration Number: NCT05556408
• Lead Sponsor: China-Japan Friendship Hospital

Brief Summary

The lower esophageal sphincter（LES）plays a key role in preventing regurgitation and aspiration. The pressure of LES partly comes from striated muscles derived from the crural portion of the diaphragm. The effect of succinylcholine on esophagogastric junction during anesthesia induction is not clear. We conducted a prospective interventional study on the effect of succinylcholine on the barrier pressure (BrP) of the esophagogastric junction.

Detailed Description

14 patients participated in the study. Propofol and succinylcholine were used for anesthesia induction. High-resolution solid-state manometry (HRM) was used to monitor the changes of the LES pressure and the intragastric pressure (IGP).The administration of propofol could significantly increase the LES pressure during end expiration and during inspiration. The application of succinylcholine had no effect on the LES pressure during end expiration, but significantly reduced the LES pressure during inspiration. Propofol had no effect on BrP. After the application of succinylcholine, BrP decreased significantly during inspiration.

Propofol significantly increased the LES pressure. Succinylcholine significantly reduced the pressure of LES and BrP during inspiration.

Study Timeline

• Study Start: 2015-03-01
• Primary Completion: 2015-12-30
• Study Completion: 2015-12-30
• Status Verified: 2022-09
• Study First Submitted: 2022-09-23
• Study First Submitted QC: 2022-09-23
• Last Update Submitted: 2022-09-23
• Study First Posted: 2022-09-27
• Last Update Posted: 2022-09-27

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 14

Inclusion Criteria

Not provided

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Exclusion Criteria

Not provided

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
High-Resolution Solid-State Manometry	Succinylcholine	Before catheterization, the patients were monitored by pulse oximetry, electrocardiogram, automatic noninvasive arterial blood pressure and bispectral index (BIS). Before the insertion of the manometric catheter an intravenous cannula was inserted. The manometric catheter was placed through the nose until the pressure from the lower esophageal sphincter to the stomach could be recorded. After confirming the position of the catheter, the catheter was taped to the nose.

Primary Outcome Measures

Name	Time	Method
pressure of lower esophageal sphincter	15 minutes	On the isocontour plots, the esophageal sphincter can be located as abrupt transitions in the pressure pattern (Fig. 2). The proximal edge of the LES was defined by sudden transition to the intra-esophageal pressure, and the distal edge was defined by sudden transition to the IGP. The pressure of the LES measured during end expiration was defined as the pressure of intrinsic sphincter to avoid the influence from the rural component of the LES. The rural component of the LES was defined as the highest pressure point at the esophagogastric junction during inspiration.
pressure of intragastric	15 minutes	IGP was measured at 2 cm below the crural diaphragmatic component of the LES