Evaluation of Fluid Responsiveness With Pulse Variation Index and Systolic Blood Pressure Changes After Lung Recruitment Maneuver

July 31, 2021 updated by: Ankara City Hospital Bilkent

The Relationship Between The Change in Systolic Blood Pressure and The Pleth Variability Index (PVI) After The Lung Recruitment Maneuver (LRM) to Evaluate Fluid Responsiveness in Open Abdominal Surgeries

Evaluation of Fluid Responsiveness With Pulse Variation Index and Systolic Blood Pressure Changes After Lung Recruitment Maneuver

Study Overview

Detailed Description

After obtaining ethics committee approval, at least 84 patients who will undergo elective open abdominal surgery under general anesthesia in the operating room of the Ministry of Health Ankara City Hospital will be included in the study. The study is a single center, prospective, observational study.

Weight, height, age, gender, BMI (body mass index), ASA information of the patients will be recorded. Induction and anesthesia management will be applied in accordance with the standard working order of the anesthesia clinic. After the patient is taken to the operating table, non-invasive arterial blood pressure monitoring (noninvasive), 5-lead ECG and pulse oximetry, in addition to standard hemodynamic monitoring, Bispectral Index (BIS), temperature and Massimo ® pulse oximeter (Masimo Corp., Irvine, CA, USA). ) will be monitored. General anesthesia induction will be performed with 0.02 mg / kg midazolam, 1mg / kg lidocaine, 1mcg / kg fentanyl and 2mg / kg propofol after preoxygenation in accordance with the routine practice of the anesthesia clinic, and endotracheal intubation will be performed with a suitable tube for the patient to be provided with 0.6mg / kg rocuronium. BIS target value range will be determined as 40-60, and anesthesia maintenance will be provided by modifying the volatile anesthetic concentration and remifentanil infusion dose (0.1-1 mcg / kg / min) in accordance with hemodynamic values. Ventilation mode and ventilation parameters; tidal volume (6-8 ml / kg according to ideal body weight), respiratory rate (12-16) and end-tidal CO2 values in the range of 30-40 mmhg, inspiratory / expiratory ratio 1: 2, positive end expiratory pressure (PEEP) 5 cm H2O and FiO2: will be set as 50%. After the Allen test to be performed preoperatively, radial artery catheterization and invasive blood pressure monitoring of the non-dominant hand, a 7 fr three lumen central catheter will be placed into the right internal jugular vein with ultrasound (USG) and central venous pressure (CVP) monitoring will be performed. These applications are routinely performed in patients scheduled for open abdominal surgery in our clinic. Preferably 16G or 18G , 2 peripheral venous lines will be placed and fluid will not be given before fluid replacement. Measurements will begin after the patient preparation is complete, after a hemodynamically stable period (defined as the period in which the mean arterial blood pressure (MAP) change is <10% within 5 minutes), in the supine position, and when the patient is confirmed by a second observer that there is no spontaneous breathing effort. Hemodynamic parameters; heart rate (HR) (beats / minute), central venous pressure (CVP) (mmHg), systolic arterial blood pressure (SAP) (mmHg), diastolic arterial blood pressure (DAP) (mmHg), mean arterial blood pressure (MAP) ) (mmHg), peripheral oxygen saturation (SpO2), PVI and BIS baseline values (baseline 1) will be recorded. The LRM will be automatically adjusted in the mechanical ventilator to be at 30 cm H2O for 30 seconds, and the test will begin, all hemodynamic parameters, especially SAB and PVI, where the maximum change at the end of 30 seconds, will be recorded (after LRM), and the differences initial baseline values will be calculated and recorded as percentages. After the recording of the second values, the crystalloid infusion at 10 ml / kg will be made to the patient through the peripheral venous line within 15 minutes, 10 minutes after the end of the infusion, new baseline values will be taken before the test (baseline 2). After fluid replacement, LRM will be repeated in the same way. The values after LRM (Fluid Challenge-FC) will be recorded and differences between basal 2 values will be calculated and recorded as percentages. Primary measurement parameters are determined as PVI and SAB, and secondary measurement parameters are HR, DAB, OAB, SpO2, CVP and BIS. The research is terminated by calculating the percentage of PVI changes with SAB formed by LRM after fluid challenge.

Study Type

Observational

Enrollment (Anticipated)

84

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 Backup

Study Locations

      • Ankara, Turkey
        • Recruiting
        • Ankara City Hospital
        • Contact:

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 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

patient who will undergo elective open abdominal surgery under general anesthesia in our hospital

Description

Inclusion Criteria:

  • ASA physical status 1 to 3 patients, over 18 years of age who will undergo elective open abdominal surgery under general anesthesia

Exclusion Criteria:

  • being over 75 years old, pregnant, who are contraindicated to use anesthetic drugs, BMI <18 and BMI> 40, who used inotropes or vasopressor drugs before or during the operation, with preoperative lung disease, with left ventricular ejection fraction less than 30%, with suspected right ventricular dysfunction (due to chronic obstructive pulmonary disease (COPD) or obstructive sleep apnea syndrome (OSAS)), with moderate to severe valvular disease, with hemodynamic instability in the perioperative period, with severe peripheral vascular occlusion, with liver failure, with renal insufficiency, with intracranial hypertension and with pulmonary hypertension.

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
correlation between systolic blood pressure change after LRM and PVI in patients who will undergo elective open abdominal surgery under general anesthesia
Time Frame: first 30 minutes of general anesthesia
In this study, the presence of a correlation between systolic blood pressure change after LRM and PVI in patients who will undergo elective open abdominal surgery under general anesthesia, the systolic pressure change in LRM is a non-invasive test that can be used to predict fluid responsiveness. We aim to reduce the invasive procedures required for the measurement of cardiac output used in the evaluation and to develop an alternative method to the use of expensive and not always accessible devices required for measurements.
first 30 minutes of general anesthesia

Collaborators and Investigators

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

Investigators

  • Principal Investigator: Oya Kılcı, MD, Ankara City Hospital Bilkent

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.

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 (Actual)

June 15, 2021

Primary Completion (Actual)

July 1, 2021

Study Completion (Anticipated)

December 31, 2021

Study Registration Dates

First Submitted

June 17, 2021

First Submitted That Met QC Criteria

June 17, 2021

First Posted (Actual)

June 25, 2021

Study Record Updates

Last Update Posted (Actual)

August 3, 2021

Last Update Submitted That Met QC Criteria

July 31, 2021

Last Verified

June 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • E2-21-468

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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.

Clinical Trials on Fluid Responsiveness

Subscribe