Cardiac Output in the Neonatal Period Using Impedance Cardiography

Costhloe, Kate; Stocks, Janet; Godfrey, Simon; Mohapatra, S. N.; Hill, Dennis W.

doi:10.1203/00006450-197712000-00001

Cited by 18 publications

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“…Different mechanisms have been proposed to explain enhanced Pseudomonas pathogenicity, not only in the Cash rat model, but also in human disorders like cystic fibrosis. There has been some speculation, for example, that coating of Pseudomonas by mucoid substances may provide survival advantages in the respiratory tract by protecting the microorganisms from phagocytic cells, antibodies and even antibiotics (4,5,6). The importance of bacterial adherence to the epithelia, before replication and microcolony formation has also been recognized (7).…”

Section: Discussionmentioning

confidence: 99%

A Comparison between Electrical Impedance and Strain Gauge Plethysmography for the Study of Cerebral Blood Flow in the Newborn

et al. 1984

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Section: Discussionmentioning

confidence: 99%

A Comparison between Electrical Impedance and Strain Gauge Plethysmography for the Study of Cerebral Blood Flow in the Newborn

et al. 1984

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Measurement of blood resistivity

Zvyagintsev¹

1982

Biomed Eng

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Blood resistivity and its implications for the calculation of cardiac output by the thoracic electrical impedance technique

1977

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A relationship has been established between the haematocrit and the resistivity of whole blood at 37 degrees C for neonates and adults not suffering from renal failure. Values of resistivity obtained in this way were substituted into Kubicek's equation for stroke volume by the electrical impedance technique, the signal pick-up electrodes being placed in standard positions. The calculated cardiac outputs were then compared with those obtained simultaneously from other techniques such as the dye dilution method for adults and the measurement of pulmonary effective capillary blood flow by rebreathing nitrous oxide in neonates. It was found that the impedance method overrestimates under these circumstances, and other workers have shown that this is likely to be due to a contribution from the right heart. A haemotocrit-dependent correction factor has been employed in the case of neonates to align the impedance and nitrous oxide results.

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Cardiac Output in the Neonatal Period Using Impedance Cardiography

Cited by 18 publications

References 1 publication

A Comparison between Electrical Impedance and Strain Gauge Plethysmography for the Study of Cerebral Blood Flow in the Newborn

A Comparison between Electrical Impedance and Strain Gauge Plethysmography for the Study of Cerebral Blood Flow in the Newborn

Measurement of blood resistivity

Blood resistivity and its implications for the calculation of cardiac output by the thoracic electrical impedance technique

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