Completed

NCT Number: NCT02476630

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

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.

Completed

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Key information

Conditions

Oxygen Concentration Levels

Age range

1 month–21 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Shands Childrens Hospital UF Health

Gainesville, Florida, 32610, United States

About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Age less than 1 month or more than 21 years
Burns of the hand
Infection of hand
Fracture of upper extremity
Hematoma of hand over thenar eminence

Treatment and study plan

StO2 measurement

Device

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.

Other names: InSpectraTM StO2 monitor

Blood Gases

Other

Other names: central venous oxygen saturation (ScvO2)

Primary outcomes

Measurement of tissue oxygen concentration (StO2) percentage

Time frame: Day 1

The use of the InSpectraTM StO2 monitor manufactured by Hutchinson Technology INC. will be used to measure the StO2 level after applying the noninvasive probe to the thenar eminence.

Secondary outcomes

Comparison of thenar StO2 oxygen saturation calculations between central venous oxygen saturation (ScvO2) calculations.

Time frame: Day 1

The correlation between StO2 and ScvO2 will be determined by using Pearson's correlation test.

Sponsors and collaborators

Lead sponsor

University of Florida