Plethysmography as a Useful Intraoperative Monitor

University of Virginia15 enrolled

Overview

Data from both the traditional invasive cardiac monitors and the Nonin will be collected simultaneously. The investigators will analyze Nonin data for peak and trough variation with respiration, area under the curve, time from trough to peak, and slope, and compare these to data collected from the invasive monitors to look for correlations in clinically important parameters such as blood pressure, central venous pressure, cardiac output, etc.

After obtaining written consent to participate, the standard of care arterial line and PA catheter will be placed pre-operatively. The investigators will attach the Nonin pulse oximeter, as a second pulse oximeter probe, to patients undergoing surgical procedures which already require invasive cardiac monitors (arterial line, pulmonary artery catheter, etc). Data from both the traditional invasive cardiac monitors and the Nonin pulse oximeter will be collected as electronic files. Once both files are compiled they will be de-identified. The investigators will also record medications and IV fluids given during surgery. The Nonin Pulse Oximeter is clinically marketed for this indication The investigators will analyze Nonin data for peak and trough variation with respiration, area under the curve, time from trough to peak, and slope, and compare these to data collected from the invasive monitors to look for correlations in clinically important parameters such as blood pressure, central venous pressure, cardiac output, etc.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Cardiovascular Diseases

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * 18 years of age and older Patient scheduled for surgery that will have both an arterial catheter and a pulmonary artery catheter as standard of care Informed consent Exclusion Criteria: * Only the above inclusion criteria apply

Locations (1)

University of Virginia Health System

Charlottesville, Virginia, United States

Outcomes

Primary Outcomes

waveform variation of the Nonin pulse oximeter compared with that of the arterial catheter

The investigators will analyze Nonin data for peak and trough variation with respiration, area under the curve, time from trough to peak, and slope, and compare these to data collected from the invasive monitors to look for correlations in clinically important parameters such as blood pressure, central venous pressure, cardiac output, etc.

Time frame: during surgery

Data from ClinicalTrials.gov

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