Texas Innovative Vascular Care

TcPO2 Study

A Transcutaneous Oxygen Tension (TcPO2 or TCOM) study is a non-invasive diagnostic test used to measure the oxygen level of tissues just below the skin. This test provides valuable information about the microcirculatory function and the oxygen supply to the tissues, which is crucial for assessing the healing potential of wounds and determining the severity of peripheral arterial disease (PAD) and results of revascularization.

How TcPO2 Study Works

Electrode Placement

Small electrodes, called transducers, are placed on the skin at various locations, typically near the area of concern, such as around a wound or on the lower extremities.

Heating of Electrodes

The electrodes gently heat the skin to a specific temperature (usually around 44°C or 111°F). This heat increases local blood flow and enhances oxygen diffusion from capillaries into the skin.

Measurement

The electrodes measure the partial pressure of oxygen (pO2) diffusing through the skin. The data is collected and analyzed to determine the tissue oxygen levels.

Applications of TcPO2 Study

Wound Healing Assessment

Determines the likelihood of wound healing, especially in patients with chronic wounds, diabetic ulcers, or other non-healing wounds.

Peripheral Arterial Disease (PAD) Diagnosis

Assesses the severity of PAD by measuring the oxygen levels in the tissues of the lower extremities.

Amputation Level Determination

Helps determine the optimal level for amputation by identifying areas with sufficient or insufficient oxygenation.

Evaluation of Revascularization Procedures

Monitors the success of procedures like angioplasty or bypass surgery aimed at improving blood flow.

Hyperbaric Oxygen Therapy (HBOT) Evaluation

Assesses the suitability of patients for HBOT and monitors the effectiveness of this therapy.

Benefits of PVR Study

Non-Invasive: The test is painless and does not involve needles or surgical procedures.
Accurate and Reliable: Provides precise measurements of tissue oxygenation, helping guide clinical decisions.
Predictive Value: Offers valuable prognostic information about wound healing and the need for surgical interventions.
Quick and Efficient: The test can be completed relatively quickly, typically within an hour.

Interpretation of TcPO2 Results

Normal Oxygen Levels

Generally, TcPO2 values above 40 mmHg are considered normal and indicate good tissue oxygenation.

Borderline Oxygen Levels

TcPO2 values between 30-40 mmHg suggest borderline tissue oxygenation and may indicate a risk of delayed wound healing.

Low Oxygen Levels

TcPO2 values below 30 mmHg indicate poor tissue oxygenation, often associated with severe PAD and a high risk of non-healing wounds or the need for amputation.

A TcPO2 study is typically performed by a vascular technician in a clinic or outpatient diagnostic facility. The results are interpreted by our doctor with specialized interpretation training, who can then recommend appropriate treatment options based on the findings.

TCPO2 Exam