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Clinical comparison of pressure-pulse and indicator-dilution cardiac output determination. 1980

R M Cundick, and R M Gardner

Two clinical studies of cardiac output determination using the pressure-pulse technique are presented. The Warner pressure-pulse method of estimating cardiac output was compared with the dye-dilution technique in 17 patients. Both the Warner and a variation of the Bourgeosis pressure-pulse methods were compared with thermodilution in 13 patients. The Warner vs dye-dilution comparison resulted in a poor correlation coefficient (r = 0.61). Values for the Warner equation calibration constant (K) were nonstationary, varying with time from --69 to 135% of the initial value in individual patients. When thermodilution was compared with the two methods, the correlation was poor (r = 0.58 for the Warner method; r = 0.50 for the modified Bourgeois method). The Warner and a variation of the Bourgeois pressure-pulse methods for monitoring the cardiac output of critically ill patients with widely varying mean arterial pressures are not sufficiently reliable for clinical decision-making.

UI MeSH Term Description Entries
D007201 Indicator Dilution Techniques Methods for assessing flow through a system by injection of a known quantity of an indicator, such as a dye, radionuclide, or chilled liquid, into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed) Dilution Techniques,Dilution Technics,Indicator Dilution Technics,Dilution Technic,Dilution Technic, Indicator,Dilution Technics, Indicator,Dilution Technique,Dilution Technique, Indicator,Dilution Techniques, Indicator,Indicator Dilution Technic,Indicator Dilution Technique,Technic, Dilution,Technic, Indicator Dilution,Technics, Dilution,Technics, Indicator Dilution,Technique, Dilution,Technique, Indicator Dilution,Techniques, Dilution,Techniques, Indicator Dilution
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011674 Pulse The rhythmical expansion and contraction of an ARTERY produced by waves of pressure caused by the ejection of BLOOD from the left ventricle of the HEART as it contracts. Pulses
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D002302 Cardiac Output The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat). Cardiac Outputs,Output, Cardiac,Outputs, Cardiac
D004395 Dye Dilution Technique Method for assessing flow through a system by injection of a known quantity of dye into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed) Dye Dilution Technic,Dilution Technic, Dye,Dilution Technics, Dye,Dilution Technique, Dye,Dilution Techniques, Dye,Dye Dilution Technics,Dye Dilution Techniques,Technic, Dye Dilution,Technics, Dye Dilution,Technique, Dye Dilution,Techniques, Dye Dilution
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013903 Thoracic Surgery A surgical specialty concerned with diagnosis and treatment of disorders of the heart, lungs, and esophagus. Two major types of thoracic surgery are classified as pulmonary and cardiovascular. Cardiac Surgery,Heart Surgery,Surgery, Cardiac,Surgery, Heart,Surgery, Thoracic

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