Systemic Arterial Blood Pressure Influences the Cross Sectional Area of the Descending Thoracic Aorta

Hillel, Zaharia; Zane, Edward A.; Thys, Daniel M.

doi:10.1097/00000542-198809010-00011

Cited by 6 publications

(2 citation statements)

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“…Theoretically, this may be caused by aortic dilatation induced by the clamp and also redistribution of blood flow. The diameter of the aorta may possibly be influenced by mean arterial pressure although this is more likely to affect the elastic aorta of the young compared with the elderly patient whose aorta is far more rigid [20,21]. We observed a slight decrease in mean arterial pressure from 85.4 to 79.0 mm Hg, thus pressurerelated changes in aortic diameter would be small and tend to allow dilatation rather than constriction if they occurred at all.…”

Section: Discussionmentioning

confidence: 60%

Continuous measurement of cardiac output during aortic cross-clamping by the oesophageal Doppler monitor ODM 1

Klotz

Klingsiek

Singer

et al. 1995

British Journal of Anaesthesia

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We have compared the Doppler against the thermodilution technique for measurement of cardiac output in six patients during aortic surgery. The correlation coefficient between the two methods was between 0.76 and 0.84 during the different periods of the operation. Using the integral nomogram instead of direct calibration, the Doppler system underestimated cardiac output in atherosclerotic patients. However, the Doppler method did register accurately significant changes in cardiac output.

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Section: Discussionmentioning

confidence: 60%

Continuous measurement of cardiac output during aortic cross-clamping by the oesophageal Doppler monitor ODM 1

Klotz

Klingsiek

Singer

et al. 1995

British Journal of Anaesthesia

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“…CSA may decrease up to 31% of normotensive values during extreme hypotension in patients with known atherosclerotic disease (those undergoing coronary artery bypass grafting). 10 In healthy sheep this relationship continues with hypertension causing an increase in CSA.…”

Section: Oesophageal Doppler Monitoringmentioning

confidence: 99%

Critical assessment of haemodynamic data

Wigfull

Cohen

2005

Continuing Education in Anaesthesia Critical Care & Pain

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Descending aortic blood flow velocity as a noninvasive measure of cardiac output in children

1994

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In previous work, we postulated that mean aortic flow velocity (MAFV) might be a direct measure of cardiac index. To investigate the assumptions inherent in this relation, we measured body surface area, aortic cross-sectional area (two-dimensional ultrasonography) and MAFV (Doppler ultrasonography) in 70 normal children. For a direct check of the relation, we simultaneously measured cardiac index (Fick technique) and MAFV (Doppler ultrasonography) in 25 children after cardiac surgery. In the normal group, we found that body surface area was directly proportional to aortic cross-sectional area (R 0.94), and MAFV at rest was the same in the ascending and descending aorta (t test, p < 0.05). In the intensive care patients, MAFV in the descending aorta was directly proportional to cardiac index over a wide clinical range [MAFV (cm/s) = CI (L/min/m2).7.7-1.2]. The assumptions made when deriving the relation between MAFV and cardiac index appear to be valid whether measured in the ascending or descending aorta. However, the scatter of results limits its clinical value. Mean aortic flow velocity is probably of greater use as a trend indicator and has the potential for continuous display using an esophageal Doppler probe when measured in the descending aorta.

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Systemic Arterial Blood Pressure Influences the Cross Sectional Area of the Descending Thoracic Aorta

Cited by 6 publications

References 0 publications

Continuous measurement of cardiac output during aortic cross-clamping by the oesophageal Doppler monitor ODM 1

Continuous measurement of cardiac output during aortic cross-clamping by the oesophageal Doppler monitor ODM 1

Critical assessment of haemodynamic data

Descending aortic blood flow velocity as a noninvasive measure of cardiac output in children

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