2003
DOI: 10.1046/j.1365-2044.2003.03082_5.x
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Comparison of closed circuit and Fick‐derived oxygen consumption in patients undergoing simultaneous aortocaval occlusion

Abstract: Agreement between continuously measured oxygen consumption during quantitative closed system anaesthesia and intermittently Fick-derived calculated oxygen consumption was assessed in 11 patients undergoing simultaneous occlusion of the aorta and inferior vena cava for hypoxic treatment of pancreatic cancer. All patients were mechanically ventilated using a quantitative closed system anaesthesia machine (PhysioFlex) and had pulmonary and radial artery catheters inserted. During the varying haemodynamic conditio… Show more

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Cited by 4 publications
(4 citation statements)
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“…In order to further study and distinguish the role of oxygen consumption in the perioperative period, feasible estimations are needed. Oxygen consumption calculated by the reverse Fick equation is consistently reported lower than simultaneous measurements by analysis of respiratory gas exchange [ 8 , 10 12 , 17 , 25 32 ]. This difference or bias has been attributed to the pulmonary oxygen consumption [ 30 , 33 , 34 ].…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…In order to further study and distinguish the role of oxygen consumption in the perioperative period, feasible estimations are needed. Oxygen consumption calculated by the reverse Fick equation is consistently reported lower than simultaneous measurements by analysis of respiratory gas exchange [ 8 , 10 12 , 17 , 25 32 ]. This difference or bias has been attributed to the pulmonary oxygen consumption [ 30 , 33 , 34 ].…”
Section: Discussionmentioning
confidence: 99%
“…Time effects and repeated measurements in the same subject under changing conditions constitute important statistical challenges in studies involving perioperative patients. Previous studies have often used simple linear regression or correlation [ 10 , 11 , 20 , 29 ] or Bland-Altman analysis [ 52 ] without correction for repeated measurements [ 12 , 20 , 26 , 37 ] except for some [ 19 , 32 ]. Only a few address the relationship between measurements over time [ 17 , 27 ].…”
Section: Discussionmentioning
confidence: 99%
“…Previous studies have often used simple linear regression or correlation(9, 10, 22, 24) or Bland-Altman analysis(25) without correction for repeated measurements(11, 22, 26, 27) except for some. (21, 28) Only a few addressed the relationship between measurements over time. (19, 29) In the present study, we developed a prediction model for EVO 2 and GVO 2 by using a random coefficient model based on individual slopes and intercepts.…”
Section: Discussionmentioning
confidence: 99%
“…Oxygen consumption calculated by the reverse Fick equation is consistently reported lower than simultaneous measurements by analysis of respiratory gas exchange. (7, 9-11, 19, 24, 26, 28, 29, 33-36) This difference or bias has been attributed to the pulmonary oxygen consumption. (35, 37, 38) However, variability of Fick-derived measurements(34, 36)and wide limits of agreement(21) has made it difficult to estimate a systematic methodological bias.…”
Section: Discussionmentioning
confidence: 99%