Intra-ocular Pressure and Ventilation (pressure)

April 6, 2016 updated by: Amitai Bickel MD, Western Galilee Hospital-Nahariya

The Effects of High Frequency Jet Ventilation on Intra-ocular Pressure During Laparoscopic Operations (Lap. Cholecystectomy) With Positive Pressure Pneumoperitoneum

Background: Positive pressure pneumoperitoneum (PP) may involve adverse pathophysiological changes, including increased intra-thoracic and ocular pressure, when combined with standard ventilation. High frequency jet ventilation (HFJV) was reported to reduce the adverse cardiovascular effects during laparoscopic cholecystectomy.

Aim: To study the effects of HFJV on intra-ocular pressure changes (reflecting intra-cranial pressure) during laparoscopic surgery under PP.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Patients and methods: The investigators studied 2 groups of patients electively scheduled for laparoscopic cholecystectomy. The study group included 10 patients that were ventilated by high frequency jet ventilation (HFJV). In the control group (16 patients) the investigators used the standard intermittent positive pressure ventilation (IPPV). Both groups were matched according to clinical and hemodynamic parameters. Intra-ocular pressure was measured by a senior ophthalmologist that was blinded to the ventilation technique. Laparoscopic surgery was done as usual, and the intra-peritoneal pressure was automatically set on 14 mmHg. Statistical significance was considered whenever P value was less than 0.05.

The investigators anticipate that the use of HFJV during laparoscopic operations under PP may prevent increased intra-ocular pressure that accompanies increased intra-abdominal pressure under conventional ventilation (IPPV).

Study Type

Interventional

Enrollment (Actual)

26

Phase

  • Not Applicable

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients undergoing elective laparoscopic cholecystectomy

Exclusion Criteria:

  • Ophthalmologic and severe Cardiopulmonary diseases

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

  • Primary Purpose: Diagnostic
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: IPPV ventilation
standard intermittent positive pressure ventilation in patients undergoing laparoscopic cholecystectomy
Procedure: IPPV ventilation
The investigators used the Perkins tonometer for monitoring intra-ocular pressure. Evaluation of intra-ocular pressure was done before induction of anesthesia, end of induction, during surgery and at the end of surgery.
Other: HFJV ventilation
high frequency jet ventilation in patients undergoing laparoscopic cholecystectomy
Procedure: HFJV ventilation
The investigators used the Perkins tonometer for monitoring intra-ocular pressure. Evaluation of intra-ocular pressure was done before induction of anesthesia, end of induction, during surgery and at the end of surgery.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Intra-ocular pressure
Time Frame: During procedure
During procedure

Collaborators and Investigators

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

Sponsor

Western Galilee Hospital-Nahariya

Investigators

  • Principal Investigator: Amitai Bickel, MD, Western Galilee Hospital, Bar Ilan Faculty of Medicine

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

January 1, 2015

Primary Completion (Actual)

January 1, 2016

Study Completion (Actual)

January 1, 2016

Study Registration Dates

First Submitted

March 22, 2016

First Submitted That Met QC Criteria

April 6, 2016

First Posted (Estimate)

April 7, 2016

Study Record Updates

Last Update Posted (Estimate)

April 7, 2016

Last Update Submitted That Met QC Criteria

April 6, 2016

Last Verified

April 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NHR-12-0094

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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