Predictability of the Pulse Pressure Variation (PPV) During Spontaneous Ventilation on the Incidence of Hypotension During Induction of Anesthesia

April 19, 2016 updated by: Jae-Hyon Bahk, MD, PhD, Seoul National University Hospital

Predictability of the Pulse Pressure Variation During Spontaneous Ventilation on the Incidence of Hypotension During Induction of Anesthesia

The purpose of this study is to find out the predictability of the pulse pressure variation during spontaneous ventilation on the incidence of hypotension during induction of anesthesia.

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.
Interventional

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.
172

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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 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

  • Korea, Republic of
      • Seoul, Korea, Republic of
        • Recruiting
        • Seoul National University Hospital
        • Contact:
        • Principal Investigator:
          • Jae-Hyon Bahk

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

20 years to 80 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients undergoing general anesthesia induction with intravenous anesthesia using propofol and remifentanil
  • Patients requiring invasive arterial blood pressure monitoring for the surgery

Exclusion Criteria:

  • Refusal of consent
  • Patients with heart disease (symptomatic valvular heart disease, intracardiac shunt, pulmonary hypertension with pulmonary systolic arterial pressure exceeding 40mmHg)
  • FEV1 ≤ 50% predicted FEV1
  • Patients with chronic renal failure
  • ASA class IV, V, VI
  • Systolic arterial blood pressure below 90mmHg before induction of anesthesia

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: PREVENTION
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: TRIPLE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
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.
EXPERIMENTAL: P(+)V(+)
PPV>14% before anesthesia induction, HES 6ml/kg infused
Other: PPV>14%
Patients whose preoperative pulse pressure variation during spontaneous ventilation exceed 14
Drug: Volume loading
Hydroxyethyl starch solution 6ml/kg iv injection
EXPERIMENTAL: P(+)V(-)
PPV>14% before anesthesia induction, no additional volume infused
Other: PPV>14%
Patients whose preoperative pulse pressure variation during spontaneous ventilation exceed 14
EXPERIMENTAL: P(-)V(+)
PPV<14% before anesthesia induction, HES 6ml/kg infused
Drug: Volume loading
Hydroxyethyl starch solution 6ml/kg iv injection
Other: PPV<14%
Patients whose preoperative pulse pressure variation during spontaneous ventilation does not exceed 14
EXPERIMENTAL: P(-)V(-)
PPV<14% before anesthesia induction, no additional volume infused
Other: PPV<14%
Patients whose preoperative pulse pressure variation during spontaneous ventilation does not exceed 14

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
Changes of heart rate and systolic arterial blood pressure from baseline values immediately before tracheal intubation
Time Frame: Three minutes after anesthesia agent injection

First, we measure the baseline heart rate and systolic arterial blood pressure and calculate the baseline heart rate and blood pressure.

At 3 minutes after anesthesia agent injection we record the heart rate and blood pressure, and perform endotracheal intubation. Then we calculate the percentile change of blood pressure and heart rate from the baseline values.
Three minutes after anesthesia agent injection

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
Changes of heart rate and systolic arterial blood pressure from baseline values, three minutes before intubation
Time Frame: Three minutes before endotracheal intubation
We collect the patient's vital signs for 1 second interval during anesthesia induction. We collect the patient's heart rate and blood pressure values for three minutes before endotracheal intubation, and average the numbers. Then we compare the numbers from the baseline value and calculate the changes.
Three minutes before endotracheal intubation
Changes of heart rate and systolic arterial blood pressure from baseline values, three minutes after intubation
Time Frame: Three minutes after endotracheal intubation
We collect the patient's vital signs for 1 second interval during anesthesia induction. We collect the patient's heart rate and blood pressure values for three minutes after endotracheal intubation, and average the numbers. Then we compare the numbers from the baseline value and calculate the changes.
Three minutes after endotracheal intubation

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.
Seoul National University Hospital

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

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.
July 1, 2014

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.
December 1, 2016

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).
July 14, 2014

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.
August 4, 2014

First Posted (ESTIMATE)

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.
August 5, 2014

Study Record Updates

Last Update Posted (ESTIMATE)

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.
April 20, 2016

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.
April 19, 2016

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.
April 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

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.
  • JHBahk_PPV_predictability

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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