### Abstract

A technique has been developed to continuously measure cardiac output by means of the principles of thermodilution. Pulmonary artery catheters were modified by placing a 10 cm filament near the usual injectate port. Small amounts of heat were infused according to a randomly repeating binary on-off sequence. The distal blood temperature was recorded and cross-correlated with the heat waveform to produce a dilution curve and calculate cardiac output. The technique was compared with bolus thermodilution in seven sheep. Cardiac output ranged from 1.5 to 13.2 L/min, and heart rate varied from 59 to 180 beats/min. The linear regression between the data obtained by the two methods is represented by the equation y = 1.00x + 0.13; the correlation coefficient, R, is 0.97, and the p value is <0.0001.

Original language | English (US) |
---|---|

Pages (from-to) | 315-320 |

Number of pages | 6 |

Journal | Journal of Thoracic and Cardiovascular Surgery |

Volume | 104 |

Issue number | 2 |

State | Published - 1992 |

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### ASJC Scopus subject areas

- Cardiology and Cardiovascular Medicine
- Surgery

### Cite this

*Journal of Thoracic and Cardiovascular Surgery*,

*104*(2), 315-320.

**Continuous thermodilution cardiac output measurement in sheep.** / Yelderman, M.; Quinn, M. D.; McKown, R. C.; Eberhart, R. C.; Dollar, M. L.

Research output: Contribution to journal › Article

*Journal of Thoracic and Cardiovascular Surgery*, vol. 104, no. 2, pp. 315-320.

}

TY - JOUR

T1 - Continuous thermodilution cardiac output measurement in sheep

AU - Yelderman, M.

AU - Quinn, M. D.

AU - McKown, R. C.

AU - Eberhart, R. C.

AU - Dollar, M. L.

PY - 1992

Y1 - 1992

N2 - A technique has been developed to continuously measure cardiac output by means of the principles of thermodilution. Pulmonary artery catheters were modified by placing a 10 cm filament near the usual injectate port. Small amounts of heat were infused according to a randomly repeating binary on-off sequence. The distal blood temperature was recorded and cross-correlated with the heat waveform to produce a dilution curve and calculate cardiac output. The technique was compared with bolus thermodilution in seven sheep. Cardiac output ranged from 1.5 to 13.2 L/min, and heart rate varied from 59 to 180 beats/min. The linear regression between the data obtained by the two methods is represented by the equation y = 1.00x + 0.13; the correlation coefficient, R, is 0.97, and the p value is <0.0001.

AB - A technique has been developed to continuously measure cardiac output by means of the principles of thermodilution. Pulmonary artery catheters were modified by placing a 10 cm filament near the usual injectate port. Small amounts of heat were infused according to a randomly repeating binary on-off sequence. The distal blood temperature was recorded and cross-correlated with the heat waveform to produce a dilution curve and calculate cardiac output. The technique was compared with bolus thermodilution in seven sheep. Cardiac output ranged from 1.5 to 13.2 L/min, and heart rate varied from 59 to 180 beats/min. The linear regression between the data obtained by the two methods is represented by the equation y = 1.00x + 0.13; the correlation coefficient, R, is 0.97, and the p value is <0.0001.

UR - http://www.scopus.com/inward/record.url?scp=0026799450&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026799450&partnerID=8YFLogxK

M3 - Article

C2 - 1495292

AN - SCOPUS:0026799450

VL - 104

SP - 315

EP - 320

JO - Journal of Thoracic and Cardiovascular Surgery

JF - Journal of Thoracic and Cardiovascular Surgery

SN - 0022-5223

IS - 2

ER -