Ultrasound Detection of Position of Diaphragm During Laparoscopic Surgery

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-12-01

Study Completion Date

2021-02-24

Brief Summary

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Position of diaphragm in the region of electrical impedance tomography measurement is to be determined by ultrasound in approx. 20 patients undergoing laparoscopic surgery. Data are to be obtained at three phases at supine horizontal position (during spontaneous breathing, at mechanically ventilated patient under general anesthesia with muscle relaxation and at mechanically ventilated patient under general anesthesia with muscle relaxation during insufflation of carbon dioxide into the peritoneal cavity to achieve exposure during laparoscopic surgery).

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Detailed Description

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During laparoscopic surgery, insufflation of carbon dioxide into the peritoneal cavity is conducted in order to optimize working space for surgeons. As a side effect, the abdominal pressure alters physiological thoraco-abdominal configuration and pushes the diaphragm and lungs cranially. Since lung image acquired by electrical impedance tomography (EIT) depends on the conditions within the thorax and abdomen, it is crucial to know the diaphragm position to analyze the effect of cranial shift of diaphragm on EIT images of the thorax. Presence of diaphragm in the region of EIT measurement is to be determined by ultrasound in approx. 20 patients undergoing laparoscopic surgery. Data are to be obtained at three phases at supine horizontal position (during spontaneous breathing, at mechanically ventilated patient under general anesthesia with muscle relaxation and at mechanically ventilated patient under general anesthesia with muscle relaxation during insufflation of carbon dioxide into the peritoneal cavity to achieve exposure during laparoscopic surgery). The results of this study will serve during design of a subsequent study dealing with optimization of EIT electrode belt position during laparoscopic surgery.

Conditions

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Laparoscopy

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Single group assignment. Approx. 20 patients during laparoscopic surgery with capnoperitoneum.

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

NONE

Study Groups

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Experimental group

Patients undergoing Laparoscopic Surgery

Group Type EXPERIMENTAL

Patients undergoing Laparoscopic Surgery

Intervention Type OTHER

Data are to be obtained at three phases at supine horizontal position (during spontaneous breathing, at mechanically ventilated patient under general anesthesia with muscle relaxation and at mechanically ventilated patient under general anesthesia with muscle relaxation during insufflation of carbon dioxide into the peritoneal cavity to achieve exposure during laparoscopic surgery).

Interventions

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Patients undergoing Laparoscopic Surgery

Data are to be obtained at three phases at supine horizontal position (during spontaneous breathing, at mechanically ventilated patient under general anesthesia with muscle relaxation and at mechanically ventilated patient under general anesthesia with muscle relaxation during insufflation of carbon dioxide into the peritoneal cavity to achieve exposure during laparoscopic surgery).

Intervention Type OTHER