Hemodynamic Effects of Ventilation Modes

September 24, 2018 updated by: Hakan Yılmaz, Ufuk University

Effects of Two Different Ventilation Modes Used in Gynecologic Laparoscopic Operations Performed in Steep Trendelenburg Position on Hemodynamic Parameters

Different ventilation modes can be used in laparoscopic surgeries. These surgeries are performed in steep Trendelenburg position with serious hemodynamic disturbances. This study aims to observe the hemodynamic effects of two different ventilation modes in laparoscopic gynecologic surgery performed in steep Trendelenburg position.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Turkey
    • Balgat
      • Ankara, Balgat, Turkey, 06520
        • Recruiting
        • UFUK UNIVERSITY FACULTY OF MEDICINE
        • Contact:
        • Principal Investigator:
          • Hakan Yılmaz, MD

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Sampling Method

Non-Probability Sample

Study Population

Women between 18 and 65 years of age scheduled to undergo elective gynecologic laparoscopic surgery

Description

Inclusion Criteria:

  • Women of ASA I and II classification between 18-65 years scheduled for elective gynecologic laparoscopic surgery

Exclusion Criteria:

  • Patient refusal to participate
  • Patients with severe cardiac (congestive heart failure etc) and pulmonary (COPD, pulmonary hypertension) disease (ASA > III)
  • Morbid obesity
  • Negative Allen test

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

  • Observational Models: Other
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Group V
The patients in this group are ventilated using VCV (Volume Control Ventilation) mode (FiO2 50%, Tidal volume: 6-8 ml/kg (ideal body weight), frequency: 12/minute, I/E ratio: 1/2, PEEP not applied)
Procedure: Mode of Mechanical Ventilation
Adjustment of mechanical ventilation mode
Group P
The patients in this group are ventilated using PCV-VG (Volume Guaranteed Pressure Control Ventilation) mode (FiO2 50%, Tidal volume: 6-8 ml/kg (ideal body weight), frequency: 12/minute (EtCO2 kept between 35-40 mmHg), Pressure limit: 30 cm H2O, I/E:1/2, PEEP not applied)
Procedure: Mode of Mechanical Ventilation
Adjustment of mechanical ventilation mode

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Measurement of changes in MAP
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Mean arterial pressure (MAP) (mmHg)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in heart rate
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Heart rate (bpm)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in systemic vascular resistance index
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Systemic vascular resistance index (dyne x sec/cm2)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in stroke volume index
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Stroke volume index (mL/m2)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in cardiac index
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Cardiac index L(min x m2)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in stroke volume variation
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Stroke volume variation (%)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in cardiac cycle efficiency
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Cardiac cycle efficiency (units)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in aortic dp/dt
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Aortic dP/dt (mmHg/msec)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Measurement of changes in peak airway pressure
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Ppeak (Peak airway pressure)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in mean airway pressure
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Pmean (Mean Airway Pressure),
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Measurement of changes in plateau airway pressure
Time Frame: T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation
Pplateau (Plateau Airway Pressure)
T0: Induction (Baseline) T1: Change after 30 minutes pneumoperitoneum T2: Change after desufflation

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Ufuk 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 (Anticipated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2018

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 1, 2018

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 15, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 15, 2018

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 24, 2018

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 25, 2018

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 25, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 24, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2018

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • HemodynamicsTrendelenburg

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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