Pulse Pressure Variation in Spontaneously Breathing Patients

April 20, 2016 updated by: Seoul National University Hospital

The Ability of Pulse Pressure Variation to Predict Fluid Responsiveness in Spontaneously Breathing Patients Undergoing Thoracic Surgery

The investigators hypothesized that pulse pressure variation (PPV) could predict fluid responsiveness in spontaneously breathing patients undergoing anesthesia induction.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Pulse pressure variation (PPV) is known to be a dynamic indicator to predict fluid responsiveness in mechanically ventilating patients. PPV is generated by cardiopulmonary interaction with respiratory cycles. In spontaneous breathing, the cardiopulmonary interaction may lead to PPV by inverted manner. In this study, the investigators will evaluate the ability of PPV to predict fluid responsiveness in spontaneously breathing patients. Before induction of anesthesia, radial artery cannulation is performed, and FloTrac/Vigileo (Edwards Lifesciences Corp., Irvine, USA) system is connected. And then, the investigators will measure baseline data including invasive blood pressure, pulse pressure, cardiac index, stroke volume variation in two different conditions: during tidal spontaneous breathing and during forced spontaneous breathing. All hemodynamic measurement will be repeated after infusion of fluid using 6mL/kg of hydroxyethyl starch solution (Voluven), and will be averaged over 3 minutes. Patients whose cardiac index increased by >15% to fluid infusion is defined as responders. The investigators will compare the hemodynamic parameters between responders and non-responders. To evaluate the ability to predict volume responsiveness, receiver operating characteristics curves of the PPV will be calculated.

Study Type

Interventional

Enrollment (Actual)

70

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, 110-744
        • Seoul National University Hospital

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 to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • patients undergoing thoracic surgery

Exclusion Criteria:

  • preoperative arrhythmia
  • left ventricular ejection fraction <40%
  • intra-cardiac valve disease
  • intra-cardiac shunt
  • pulmonary artery hypertension
  • severe peripheral vascular obstructive disease
  • decreased pulmonary function

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: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: fluid infusion
Procedure: Hydroxyethyl starch solution (Voluven) infusion
fluid loading will be performed by hydroxyethyl starch solution (Voluven), at 6 mL/kg

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
pulse pressure variation
Time Frame: three respiratory cycles, an expected average of 30 seconds
three respiratory cycles, an expected average of 30 seconds

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
hemodynamic parameters
Time Frame: before and after fluid loading, 1 mimute
systolic blood pressure (SBP), dyastolic BP, mean BP, heart rate, cardiac index, stroke volume varation
before and after fluid loading, 1 mimute

Collaborators and Investigators

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

Sponsor

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

May 1, 2011

Primary Completion (Actual)

September 1, 2011

Study Completion (Actual)

October 1, 2011

Study Registration Dates

First Submitted

May 29, 2011

First Submitted That Met QC Criteria

July 25, 2011

First Posted (Estimate)

July 26, 2011

Study Record Updates

Last Update Posted (Estimate)

April 21, 2016

Last Update Submitted That Met QC Criteria

April 20, 2016

Last Verified

July 1, 2011

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • JHBahk_PPV

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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