Evaluation of the Changes of Pleth Variability Index During Preoxygenation for Predicting Hypotension

NCT ID: NCT04991220

Last Updated: 2021-08-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

96 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-08-30

Study Completion Date

2022-12-31

Brief Summary

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The aim of this study is to investigate whether the change in pleth variation index (PVI) according to preoxygenation can predict hypotension during anesthesia induction.

Detailed Description

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In patients with hypovolemia or dehydration, pulse pressure variation can be increased by spontaneous forced inspiratory breathing. PVI is a noninvasive method of indicator of fluid responsiveness like purse pressure variation. We expected that the amount of change in PVI between at the time of entering operating room and after preoxygenation with forced inspiration method could be different depending on the patient's volume status.

After entering operating room, monitoring devices, anesthesia depth sensor, and Radical-7® Pulse CO-Oximeter® are attached. Patients rest for 5 minutes, and then baseline systolic blood pressure, diastolic blood pressure, mean blood pressure, and heart rate are collected every 1-minute. Pleth variability index (PVI), perfusion index (PI) are also measured continuously. For pre-oxygenation of anesthesia, take 8 deep breaths at flow 10 l/min of 100% oxygen for 1 minute with maximally forced inspiration. After that, for 2 minutes, patients breathe as usual while maintaining oxygen supply. until tracheal intubation or laryngeal mask insertion. Anesthesia is induced with target concentration infusion of 4.0 ng/ml of remifentanil and 4.0 ug/ml of propofol. When the patient loses consciousness, rocuronium 1.0 mg/kg is administrated and endotracheal tube or laryngeal mask is inserted 2 minutes after. PVI, PI, blood pressure, and heart rate are measured until tracheal intubation or laryngeal mask insertion. Anesthesia induction-related hypotension is defined as a decrease in mean arterial pressure below 60 mmHg at any timepoint from baseline parameter collection to until airway device insertion. The parameters are analyzed by comparing between groups with and without anesthesia induction-related hypotension.

Conditions

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Hypotension on Induction

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

SCREENING

Blinding Strategy

NONE

Study Groups

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preoxygenation

Taking 8 deep breaths at 10 l/min of 100% oxygen for 1 minute with forced inspiration for pre-oxygenation

Group Type EXPERIMENTAL

Preoxygenation

Intervention Type PROCEDURE

Taking 8 deep breaths at 10 l/min of 100% oxygen for 1 minute with forced inspiration for pre-oxygenation

Interventions

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Preoxygenation

Taking 8 deep breaths at 10 l/min of 100% oxygen for 1 minute with forced inspiration for pre-oxygenation

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Adult patients undergoing elective surgery under general anesthesia

Exclusion Criteria

* (1) American Society of Anesthesiologists (ASA) physical status classification III or higher (2) Patients with cognitive impairment who are unable to follow instructions (3) Patients with pulmonary dysfunction (4) Other patients who are judged inappropriate to the experiment by the researcher
Minimum Eligible Age

19 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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GEMSKOREA

UNKNOWN

Sponsor Role collaborator

Seoul National University Hospital

OTHER

Sponsor Role lead

Responsible Party

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Hee-Soo Kim

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Hee Soo Kim, M.D., PhD

Role: PRINCIPAL_INVESTIGATOR

Seoul National University Hospital

Locations

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SNUH

Seoul, Jongro Gu, South Korea

Site Status

Countries

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South Korea

Central Contacts

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Yoon Jung Kim

Role: CONTACT

+82-10-9088-6452

References

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Reference Type BACKGROUND
PMID: 7992907 (View on PubMed)

Tsuchiya M, Yamada T, Asada A. Pleth variability index predicts hypotension during anesthesia induction. Acta Anaesthesiol Scand. 2010 May;54(5):596-602. doi: 10.1111/j.1399-6576.2010.02225.x. Epub 2010 Mar 10.

Reference Type BACKGROUND
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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Kim YJ, Seo JH, Lee HC, Kim HS. Pleth variability index during preoxygenation could predict anesthesia-induced hypotension: A prospective, observational study. J Clin Anesth. 2023 Nov;90:111236. doi: 10.1016/j.jclinane.2023.111236. Epub 2023 Aug 26.

Reference Type DERIVED
PMID: 37639751 (View on PubMed)

Other Identifiers

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2106-029-1232

Identifier Type: -

Identifier Source: org_study_id

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