Thenar Tissue Oxygen Concentration (StO2): A Non-invasive Surrogate for Central Venous Oxygen Saturation (ScvO2)

Thenar Tissue Oxygen Concentration (StO2): A Non-invasive Surrogate for Central Venous Oxygen Saturation (ScvO2)

Sponsors

Lead Sponsor: University of Florida

Source University of Florida
Brief Summary

Oxygen concentration for patients undergoing cardiac catheterization and during admission to an intensive care unit is important outcome measure for clinical care. Currently, the tool used to monitor the oxygen concentration is a central venous access positioned in the superior vena cava or in the pulmonary artery to monitor the central venous oxygen saturation (ScvO2). However, it is invasive and not always possible due to a lack of a central line access. In this research study, the investigator would like use a noninvasive means for the ScvO2 by using the thenar tissue oxygen concentration (StO2). The primary aim for the study is to determine if the thenar StO2 correlates with ScvO2 and can serve as a noninvasive surrogate for ScvO2.

Detailed Description

Participants will be undergoing a cardiac catheterization at Shands Children's Hospital or will be admitted to the intensive care unit, and as part of the clinical care either a central venous access positioned in the superior vena cava or in the pulmonary artery. As a part of the routine clinical care blood gases are frequently taken for continuous evaluation of therapy to monitor the central venous oxygen saturation (ScvO2). A measurement of thenar tissue oxygen concentration will be timed with a central venous blood gas draw to monitor the tissue oxygen concentration (StO2).

The StO2 measurement will be taken by using the InSpectraTM StO2 monitor manufactured by Hutchinson Technology Inc. after applying the noninvasive clip on probe to the thenar eminence of the right hand to measure the StO2 level. After a stable reading is obtained for 60 seconds it will be recorded.

The two different measurements of oxygen concentration will be compared to determine if a correlation exists.

Overall Status Completed
Start Date July 2015
Completion Date August 2018
Primary Completion Date August 2018
Study Type Observational
Primary Outcome
Measure Time Frame
Measurement of tissue oxygen concentration (StO2) percentage Day 1
Secondary Outcome
Measure Time Frame
Comparison of thenar StO2 oxygen saturation calculations between central venous oxygen saturation (ScvO2) calculations. Day 1
Enrollment 69
Condition
Intervention

Intervention Type: Device

Intervention Name: StO2 measurement

Description: All participants will have a measurement of the tissue oxygen concentration (StO2) level after applying the noninvasive probe to the thenar eminence. This measurement is done at the same time as a blood gas from the central venous catheter is obtained. The StO2 measurement is documented once for the subject in the study.

Arm Group Label: Study subjects

Other Name: InSpectraTM StO2 monitor

Intervention Type: Other

Intervention Name: Blood Gases

Description: All participants will have a measurement of the tissue oxygen concentration (StO2) level after applying the noninvasive probe to the thenar eminence. This measurement is done at the same time as a blood gas from the central venous catheter is obtained. The StO2 measurement is documented once for the subject in the study.

Arm Group Label: Study subjects

Other Name: central venous oxygen saturation (ScvO2)

Eligibility

Sampling Method: Non-Probability Sample

Criteria:

Inclusion Criteria:

1. Age 1 month to 21 years of age admitted to the intensive care unit or undergo cardiac catheterization at Shands Children's Hospital and have a central venous access positioned in the superior vena cava or pulmonary artery.

Exclusion Criteria:

1. Age less than 1 month or more than 21 years

2. Burns of the hand

3. Infection of hand

4. Fracture of upper extremity

5. Hematoma of hand over thenar eminence

Gender: All

Minimum Age: 1 Month

Maximum Age: 21 Years

Healthy Volunteers: No

Overall Official
Last Name Role Affiliation
Ravi Samraj, MD Principal Investigator University of Florida , Gainesville, Florida, United States, 32610
Location
Facility: Shands Childrens Hospital UF Health
Location Countries

United States

Verification Date

August 2018

Responsible Party

Type: Sponsor

Has Expanded Access No
Arm Group

Label: Study subjects

Description: All participants will have a measurement of the tissue oxygen concentration (StO2) level after applying the noninvasive probe to the thenar eminence. This measurement is done at the same time as blood gases(ScvO2) from the central venous catheter is obtained. The StO2 measurement is documented once for the subject in the study.

Study Design Info

Observational Model: Case-Only

Time Perspective: Prospective

Source: ClinicalTrials.gov