Comparison of Different Inspiratory to Expiratory Ratios on Respiratory Mechanics and Oxygenation in Robot-assisted Laparoscopic Radical Prostatectomy With Steep Trendelenburg Position and Pneumoperitoneum

May 22, 2014 updated by: Yonsei University
The steep trendelenburg position and pneumoperitoneum during laparoscopic surgery have the potential to cause an adverse effects on respiratory mechanics and gas exchange. Previous studies have proposed that a prolonged I:E ratio ventilation improved respiratory mechanics and gas exchange. Therefore, the aim of this study is to evaluate whether a prolonged I:E ratio ventilation improves gas exchange and respiratory mechanics in patients undergoing robot-assisted laparoscopic radical prostatectomy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

80

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Korea, Republic of
      • Seoul, Korea, Republic of, 120-752
        • Department of Anesthesiology and Pain Medicine Anesthesia and Pain Research Institute Yonsei University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Adult male patients (20-90 years of age) scheduled for elective robot-assisted laparoscopic radical prostatectomy undergoing general anesthesia

Exclusion Criteria:

  • Patients with an abnormal airway anatomy, reactive airway diseases, chronic respiratory diseases, a history of coronary artery diseases, or heart failure
  • BMI > 30 kg/m 2

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: prolonged I:E ratio (1:1) group
Other: prolonged inspiratory to expiratory (I:E) ratio (1:1)
80 patients are randomly allocated into two groups : prolonged I:E ratio (1:1) (n=40) and conventional I:E ratio (1:2) group (n=40). In the prolonged I:E ratio (1:1), mechanical ventilation is maintained with during I:E ratio 1:1 during steep trendelenburg with pneumoperitoneum.
Active Comparator: conventional I:E ratio (1:2) group
Other: conventional I:E ratio (1:2)
80 patients are randomly allocated into two groups : prolonged I:E ratio (1:1) (n=40) and conventional I:E ratio (1:2) group (n=40). In the conventional I:E ratio (1:2) group (n=40), mechanical ventilation is maintained with during I:E ratio 1:2 during steep trendelenburg with pneumoperitoneum.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
The peak inspiratory pressure
Time Frame: before 10 minutes after anesthesia induction, 30 and 60 minutes after steep trendelenburg position and pneumoperitoneum, and 10 minutes after supine position and CO2 desufflation
The peak inspiratory pressure during mechanical ventilation with endotracheal intubation under general anesthesia
before 10 minutes after anesthesia induction, 30 and 60 minutes after steep trendelenburg position and pneumoperitoneum, and 10 minutes after supine position and CO2 desufflation

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Yonsei University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2013

Primary Completion (Actual)

February 1, 2014

Study Completion (Actual)

February 1, 2014

Study Registration Dates

First Submitted

June 30, 2013

First Submitted That Met QC Criteria

June 30, 2013

First Posted (Estimate)

July 4, 2013

Study Record Updates

Last Update Posted (Estimate)

May 23, 2014

Last Update Submitted That Met QC Criteria

May 22, 2014

Last Verified

May 1, 2014

More Information

Terms related to this study

Other Study ID Numbers

  • 4-2013-0287

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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