Evaluation of Peripheral Microcirculation Hemodynamics Following Various Changes Based on Noninvasive Thermography

NCT ID: NCT03357523

Last Updated: 2021-11-10

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

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-11-01

Study Completion Date

2019-12-31

Brief Summary

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The objective of the current study is to investigate the hemodynamic changes in the peripheral microcirculation system as a response to various changes, using noninvasive thermography and laser doppler

Detailed Description

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This study includes a single session per subject. Microvascular and systemic variables will be monitored in response to a number of non-invasive interventions/device that are approved for clinical use and known to elicit microvascular responses. These interventions are applied consecutively, include breathing at different rates, low power visible light in the red-to-near-infrared range, increase in local temperature, and changes in the arm position.

Conditions

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Microcirculation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Red LED

Light emitting diodes, 633 nm, 70 mW/cm2, Omnilux new-U (Red LED) (Photomedex, Horsham, PA, USA); RESPeRATE; Heating bag

Group Type EXPERIMENTAL

Omnilux new-U (Red LED)

Intervention Type DEVICE

The left wrist (including area of radial artery) will be illuminated with the Omnilux new-U (Red LED) light source, while the right wrist will not be illuminated

RESPeRATE

Intervention Type DEVICE

The subjects will be guided by a digital metronome to breath at 15, 10, and 6 breaths/min for 2 minutes each using the metronome function of the device RESPeRATE (InterCure, Israel) that guides breathing using musical tones played at selectable rhythm

Heating bag

Intervention Type DEVICE

Applying a standard 10X13 \[cm\] heating bag on the surface of the hand at 43-45 degree Celsius for 10 seconds

Near Infrared LED

Light emitting diodes, 830 nm, 55 mW/ cm2, Omnilux new-U (Near infrared LED) (Photomedex, Horsham, PA, USA); RESPeRATE metronome; Heating bag

Group Type ACTIVE_COMPARATOR

Omnilux new-U (Near infrared LED)

Intervention Type DEVICE

The left wrist (including area of radial artery) will be illuminated with the Omnilux new-U (Near infrared LED) light source, while the right wrist will not be illuminated

RESPeRATE

Intervention Type DEVICE

The subjects will be guided by a digital metronome to breath at 15, 10, and 6 breaths/min for 2 minutes each using the metronome function of the device RESPeRATE (InterCure, Israel) that guides breathing using musical tones played at selectable rhythm

Heating bag

Intervention Type DEVICE

Applying a standard 10X13 \[cm\] heating bag on the surface of the hand at 43-45 degree Celsius for 10 seconds

Interventions

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Omnilux new-U (Red LED)

The left wrist (including area of radial artery) will be illuminated with the Omnilux new-U (Red LED) light source, while the right wrist will not be illuminated

Intervention Type DEVICE

Omnilux new-U (Near infrared LED)

The left wrist (including area of radial artery) will be illuminated with the Omnilux new-U (Near infrared LED) light source, while the right wrist will not be illuminated

Intervention Type DEVICE

RESPeRATE

The subjects will be guided by a digital metronome to breath at 15, 10, and 6 breaths/min for 2 minutes each using the metronome function of the device RESPeRATE (InterCure, Israel) that guides breathing using musical tones played at selectable rhythm

Intervention Type DEVICE

Heating bag

Applying a standard 10X13 \[cm\] heating bag on the surface of the hand at 43-45 degree Celsius for 10 seconds

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. Healthy males and females, between 23 and 45 years of age.
2. Willing to sign informed consent

Exclusion Criteria

1. Currently smoking
2. Any abnormal skin condition in the area of light irradiation.
3. Pregnant having given birth less than 3 months ago, and/or breastfeeding.
4. Having a history of diseases stimulated by heat, such as recurrent Herpes Simplex in the treated area, unless treatment is conducted following a prophylactic regimen.
5. Having any illness that might affect the vasculature, such as diabetes (type I or II)
6. Suffering from significant concurrent illness, such as cardiac disorders or pertinent neurological disorders.
7. As per the Investigator's discretion, any physical or mental condition which might make it unsafe for the subject to participate in this study.
Minimum Eligible Age

23 Years

Maximum Eligible Age

45 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Hebrew University of Jerusalem

OTHER

Sponsor Role collaborator

Afeka, The Tel-Aviv Academic College of Engineering

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Zehava Blechman, PhD

Role: PRINCIPAL_INVESTIGATOR

Afeka Tel Aviv Academic College of Engineering

Locations

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Afeka, Tel-Aviv Academic College of Engineering

Tel Aviv, , Israel

Site Status

Countries

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Israel

References

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Gavish L, Hoffer O, Rabin N, Halak M, Shkilevich S, Shayovitz Y, Weizman G, Haim O, Gavish B, Gertz SD, Ovadia-Blechman Z. Microcirculatory Response to Photobiomodulation-Why Some Respond and Others Do Not: A Randomized Controlled Study. Lasers Surg Med. 2020 Nov;52(9):863-872. doi: 10.1002/lsm.23225. Epub 2020 Feb 17.

Reference Type DERIVED
PMID: 32064652 (View on PubMed)

Other Identifiers

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05.04.2017-1-AFK

Identifier Type: -

Identifier Source: org_study_id