The Precision of Pulmonary Artery Cardiac Output-measurements in Spontaneously Breathing Patients

N/ACompletedNCT01944254

Norwegian University of Science and Technology18 enrolled

Overview

The intention of this study is to determine whether the precision of the measure of cardiac output can be optimized by conducting the measurement while the participant is instructed to exhale slowly. This will be compared to measurements done at random to respiration and timed with the participant's spontaneous expiration.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Masking

NONE

Enrollment

Conditions

Heart Diseases

Interventions

Cardiac output measurement at random to respirationPROCEDURE

Cardiac output measurement obtained by pulmonary artery catheter thermodilution technique (PAC TD)

Cardiac output measurement synchronised at start of expirationPROCEDURE

Cardiac output measurement obtained by PAC TD

Cardiac output measurement timed to instructed exhalationPROCEDURE

Cardiac output measurement obtained by PAC TD

Eligibility

Sex: ALLMin age: 18 YearsMax age: 90 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Every patient that receives a pulmonary artery catheter (PAC) related to elective cardiac surgeries, * informed and written consent to participation in the study in accordance with the Helsinki declaration * hemodynamic stability Exclusion Criteria: * Hemodynamical instability * atrial fibrillation * tricuspid insufficiency ≥ grade 2 * hemodialysis or other conditions where extra volume load can be negative, * lack of ability to give a written consent to participate in the study

Locations (1)

Department of circulation and medical imaging, NTNU

Trondheim, Norway

Outcomes

Primary Outcomes

The observed variance amongst the cardiac output measures

The measures will be obtained the first postoperative morning by pulmonary artery catheter thermodilution technique. In total 24 measurements will be done in each patient, i.e 8 measurements in each interventional series described later. The variance observed will create the foundation for calculating the precision of the measures.

Time frame: 1 hour

Data from ClinicalTrials.gov

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